Consulta: subjectFacets:"Zooplankton"
Registros recuperados: 242
Data/hora: 09/06/2024 05:39:07

Structure and dynamic of food webs in Andean North Patagonian freshwater systems: organic matter, light and nutrient relationships
Provedor de dados: 67
Autores: Modenutti,Beatriz; Albariño,Ricardo; Bastidas Navarro,Marcela; Díaz Villanueva,Verónica; Souza,María Sol; Trochine,Carolina; Laspoumaderes,Cecilia; Cuassolo,Florencia; Mariluán,Gustavo; Buria,Leonardo; Balseiro,Esteban.
North Andean Patagonian aquatic systems include a number of deep and shallow oligotrophic lakes with a profuse hydrographic net. In this contribution we present a review of the researches carried out during the last decade in the food webs of North Patagonian water bodies. Food webs in these systems were studied based on field surveys, combining with field and laboratory experiments. Deep and shallow lakes were analyzed in relation to light, organic matter, and nutrient constraints as limiting interacting factors. In addition, we have also extended our knowledge on the structure and dynamics of stream food webs by analyzing different aspects of biotic interactions occurring both through the autotrophic and heterotrophic pathways. Since Andean lakes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterioplankton; Phytoplankton; Zooplankton; Fish; Insects; Lakes and rivers.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2010000200003

Responses of plankton and fish from temperate zones to UVR and temperature in a context of global change
Provedor de dados: 67
Autores: Gonçalves,Rodrigo J; Souza,María Sol; Aigo,Juana; Modenutti,Beatriz; Balseiro,Esteban; Villafañe,Virginia E; Cussac,Víctor; Helbling,E Walter.
In the last decades, both temperature and UVB (280-315 nm) radiation on the surface of the Earth increased at growing rates as a result of human activities. Many studies had evaluated the effects of temperature on aquatic ecosystems, but now the field broadens as the combination and variations of temperature and radiation gains especial importance. In this work we attempt to revisit some of our knowledge about the effects of UVR and temperature on marine and freshwater plankton and fish from temperate regions (defined here as latitudes between 30-60º), especially from the Patagonia area, due to the special characteristics found in these sites. UVR affects (often negatively) almost all processes, from carbon fixation to behavior; and certainly all trophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Bacterioplankton; Phytoplankton; Zooplankton; Fish; Oxidative stress; Upper mixed layer.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2010000200005

Zooplankton interactions with the oxygen minimum zone in the eastern south pacific
Provedor de dados: 72
Autores: Escribano,Rubén.
Zooplankton in the coastal upwelling zone off the eastern South Pacific must cope with a shallow oxygen minimum zone. In this work, I summarize available information on the zooplankton species that interact with the OMZ in the upwelling region off northern Chile. Data are available from the MinOx cruise carried out in March 2000 and the ZOMEI cruise perfomed in October 2005, both onboard the R/V Vidal Gormaz of the Chilean navy. Nineteen species of copepods and 10 of euphausiids were analyzed in their vertical distribution and migrating behavior. Several abundante species appeared constrained by the OMZ and restricted to the upper 50m layer. However, other abundant species inhabit temporarily or permanently the OMZ contributing substantially to the...
Tipo: Journal article
Palavras-chave: Carbon flux; Copepods; Euphausiids; Vertical migration; Zooplankton.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000300005

Primeras observaciones en características reproductivas en poblaciones chilenas de Copépodos Calanoideos de aguas continentales
Provedor de dados: 72
Autores: De los Rios-Escalante,Patricio; Carreño,Eriko.
Los copépodos calanoideos son abundantes en los ensambles zooplanctónicos de aguas continentales de la Patagonia, y en este contexto, se analizaron parámetros de fertilidad en cuatro especies de calanoideos representativos de aguas continentales de la Patagonia (37°-52° S) con el objetivo de determinar los parámetros de fertilidad en poblaciones de copépodos representativas de la Patagonia chilena. Para este propósito se consideraron dos a cuatro poblaciones de las siguientes especies: Boeckella gracilipes, B. michaelseni, B. poppei, y Tumeodiaptomus diabolicus, se consideraron individuos hembras con huevos a las que se midió el largo total, número de huevos y la razón entre número de huevos con el largo total. Los resultados mostraron que a nivel de...
Tipo: Journal article
Palavras-chave: Copépodos; Zooplankton; Lagos Patagónicos.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382012000200005

Многолетние трансформации планктона в гиперсолёном Бакальском озере (Крым) при колебаниях солёности.
Provedor de dados: 13
Autores: Загородняя, Ю. А.; Батогова, Е. А.; Шадрин, Н. В.
Изложены результаты исследования планктона в гиперсолёном Бакальском озере в период с 2000 по 2007 гг. Его солёность в эти годы резко менялась, из гиперсолёного оно превращалось в морское и затем возвращалось к гипергалинному состоянию. Такие изменения солёности приводили к полной смене фауны (галофильные виды замещались морскими и наоборот), при этом менялась структура продукционного процесса. В 2000 – 2002 гг., несмотря на высокую численность, фитопланктон играл незначительную роль в общей первичной продукции, в то время как продукция кладофоровых матов была на 1 – 2 порядка выше. В 2004 – 2005 гг. кладофоровые маты отсутствовали в озере и первичная продукция, в основном, создавалась фитопланктоном. В 2006 - 2007 гг. вода в озере была прозрачной,...
Tipo: Journal Contribution
Palavras-chave: Гиперсолёные озера; Зоопланктон; Биоразнообразие; Жаброногие раки; Zooplankton; Salt lakes; Biodiversity; Гіперсолоні озера; Біорізноманітність; Жаброногі раки.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/830

Многолетние трансформации планктона в гиперсолёном Бакальском озере (Крым) при колебаниях солёности.
Provedor de dados: 13
Autores: Загородняя, Ю. А.; Батогова, Е. А.; Шадрин, Н. В.
Изложены результаты исследования планктона в гиперсолёном Бакальском озере в период с 2000 по 2007 гг. Его солёность в эти годы резко менялась, из гиперсолёного оно превращалось в морское и затем возвращалось к гипергалинному состоянию. Такие изменения солёности приводили к полной смене фауны (галофильные виды замещались морскими и наоборот), при этом менялась структура продукционного процесса. В 2000 – 2002 гг., несмотря на высокую численность, фитопланктон играл незначительную роль в общей первичной продукции, в то время как продукция кладофоровых матов была на 1 – 2 порядка выше. В 2004 – 2005 гг. кладофоровые маты отсутствовали в озере и первичная продукция, в основном, создавалась фитопланктоном. В 2006 - 2007 гг. вода в озере была прозрачной,...
Tipo: Journal Contribution
Palavras-chave: Гиперсолёные озера; Зоопланктон; Биоразнообразие; Жаброногие раки; Zooplankton; Salt lakes; Biodiversity; Гіперсолоні озера; Біорізноманітність; Жаброногі раки.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/830

Сезонная вариабельность биолюминесценции черноморского гребневика-вселенца Beroe ovata Mayer 1912 (Ctenophora: Beroida)
Provedor de dados: 13
Autores: Машукова, О. В.
Seasonal dynamics of light-emission characteristics of ctenophore Beroe ovata Mayer 1912 has been revealed. The highest amplitude parameters of the bioluminescence are observed in ctenophores during the summer and autumn periods. The winter and spring periods are characterised by low indicators of intensity of light-emission beroe. Seasonal distinctions in the bioluminescence of ctenophore are caused as the seasonal dynamics of their biochemical structure in dependence on food supplies, and seasonal fluctuations of temperature, and also seasonal dynamics of consumption by them of oxygen.
Tipo: Book Section
Palavras-chave: Amplitude and duration of light-emission; Seasonal dynamics; Zooplankton; Black Se.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1857

Состояние зоопланктонного сообщества Севастопольской бухты после вселения гребневика Beroe ovata в Черное море (1999 – 2003 гг.)
Provedor de dados: 13
Autores: Губарева, Е. С.; Светличный, Л. С.; Романова, З. А.; Аболмасова, Г. И.; Аннинский, Б. Е.; Финенко, Г. А.; Бат, Л.; Кидейс, А.
С сентября 1999 г. по сентябрь 2003 г. на постоянной станции у выхода из Севастопольской бухты выполнены исследования сезонной динамики видового состава, численности и биомассы кормового и желетелого зоопланктона (Beroe ovata и Mnemiopsis leidyi). Сезонная динамика биомассы кормового зоопланктона Севастопольской бухты характеризовалась летне-осенним и зимним максимумами, достигающими 2.4 г/м2. Основной вклад в биомассу кормового зоопланктона вносил меропланктон и копеподы (42.84.0 и 32.03.4% среднегодовой биомассы, соответственно). После появления в Черном море хищного гребневика B. ovata среднегодовая биомасса M. leidyi в Севастопольской бухте снизилась в среднем в 3.5 раза по сравнению с 1995 г., сократилась продолжительность его воздействия на...
Tipo: Journal Contribution
Palavras-chave: Черное море; Севастопольская бухта; Зоопланктон; Численность; Биомасса; Многолетние изменения; The Black Sea; Sevastopol Bay; Zooplankton; Mnemiopsis leidyi; Beroe ovata; Abundance; Biomass; Long-term fluctuation Biomass Zooplankton Abundance Zooplankton Biomass http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2004
URL: http://repository.ibss.org.ua/dspace/handle/99011/66

Neritization of the plankton fauna in the Mediterranean basin
Provedor de dados: 13
Autores: Kovalev, A. V.; Mazzocchi, M. G.; Kideys, A. E.; Skryabin, V. A.
The plankton fauna neritization in the Mediterranean Seas basin is discussed. Neritization is an increase of the neritic species percentage in zooplankton composition from the Mediterranean to the Black and Sea of Azov; It has been shown that the percentage of oceanic species decreases considerably in the Mediterranean Sea, adjacent to Gibraltar strait if compared with the Atlantic region, and the share of neritic – oceanic and neritic species increases correspondingly. Some of these species were observed in the open sea. In the Black Sea, oceanic species are absent. Neritic – oceanic and neritic species, which came there from the Mediterranean Sea, are distributed through out the area. The shallow-water straits between the seas and considerable changes in...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Oceanic; Neritic-oceanic; Neritic and narrow-neritic species; Neritization; Зоопланктон; Океанические; Неритическо-океанические; Неритические; Узко-неритические виды; Неритизация Zooplankton Neritic province Zooplankton http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2006
URL: http://repository.ibss.org.ua/dspace/handle/99011/263

Науплиусы массовых видов пелагических копепод мирового океана. Определитель
Provedor de dados: 13
Autores: Сажина, Л. И.
В книге обобщены современные сведения о морфологии науплиальных стадий ракообразных отряда Copepoda - наиболее трудно определяемой группы морского зоопланктона. Описание сопровождается рисунками и оригинальными определительными таблицами, позволяющими идентифицировать науплиусов на таксономических рангах от подотряда до вида.
Tipo: Book
Palavras-chave: Taxonomy; Animal morphology; Zooplankton; Zooplankton; Taxonomy; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_421.
Ano: 1985
URL: http://repository.ibss.org.ua/dspace/handle/99011/1622

Акватория и берега Севастополя: экосистемные процессы и услуги обществу
Provedor de dados: 13
Autores: Шадрин, Н. В.; Павлова, Е. В.
В монографии представлены результаты изучения современной экологической ситуации в акватории Севастополя. Рассмотрены также вопросы взаимосвязей функционирования экосистем и социально-экономического развития. Для экологов, экономистов, менеджеров, студентов и жителей Севастополя.
Tipo: Book
Palavras-chave: Ecosystems; Scales; Models; Anthropogenic factors; Eutrophication; Ichthyoplankton; Phytoplankton; Zooplankton; Oil pollution; Litter; Mortality; Coastal zone; Biodiversity; Rivers; Zooplankton; Ecosystems; Scales; Models; Eutrophication; Rivers; Biodiversity; Phytoplankton; Anthropogenic factors; Mortality; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_6838; Http://aims.fao.org/aos/agrovoc/c_4881; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_33949; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_34996; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1999
URL: http://repository.ibss.org.ua/dspace/handle/99011/381

Influence of gelatinous zooplankton on fish stocks in the Black Sea: analysis of biological time-series
Provedor de dados: 13
Autores: Grishin, A.; Daskalov, G.; Shlyakhov, V.; Mihneva, V.
Scientific information about the Black Sea ecosystem with respect to jelly plankton – fisheries interactions is reviewed. Long time-series of the main components of pelagic community: fishes, invertebrates, discussed trends, and relationships between them are analysed. The amount of information and results from the analyses will be used to formulate hypotheses about the linkages between gelatinous plankton and the other pelagic populations and the effects on fish stocks. These data will be used as a background study for the following stages in the Eurogel project: experimental work, data analyses and modelling.
Tipo: Journal Contribution
Palavras-chave: Jellyfish; Mnemiopsis leidyi; Zooplankton; Anchovy; Sprat; Horse mackerel; Beroe ovata; Introduction; Time-series; Black Sea; Желетелые; Гребневик мнемиопсис; Зоопланктон; Хамса; Шпрот; Ставрида; Гребневик берое; Интродукция; Временные ряды; Черное море Zooplankton Zooplankton http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/296

Численные оценки регенерационного потока азота в открытой части Чёрного моря
Provedor de dados: 13
Autores: Пархоменко, А. В.
Рассмотрены результаты расчётов экскреции азота зоопланктоном в глубоководной области Чёрного моря. Скорость экскреции азота зоопланктоном в слое 0 – 150 м зимой варьировала от 20 до 23, весной – 34 - 59, летом – 66 – 86, осенью – 89 - 28 мгN·м–2·сут-1. Средняя величина регенерационной первичной продукции, рассчитанная относительно первичной продукции, измеренной радиоуглеродным методом, зимой составляла  24 %, весной – 49 %, летом – 91 %, осенью – 76 %, в среднем за год – 60 %. Обсуждается вопрос о роли регенерационного потока азота в формировании первичной продукции в эвфотическом слое открытой части Чёрного моря.
Tipo: Journal Contribution
Palavras-chave: Азот; Экскреция; Зоопланктон; Чёрное море; Nitrogen; Excretion; Zooplankton; Black Sea Nitrogen Excretion Zooplankton Nitrogen Zooplankton Excretion http://aims.fao.org/aos/agrovoc/c_5192 http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_2750.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/302

Биотический баланс сообщества пелагиали прибрежной зоны Черного моря
Provedor de dados: 13
Autores: Александров, Б. Г.; Курилов, А. В.
Дана количественная оценка вклада пелагических организмов в трансформацию органического вещества в прибрежной зоне Чёрного моря. На основании рассчитанных элементов биотического баланса – рационов, продукции и деструкции определены количественные взаимоотношения между бактерио-, фито- и зоопланктоном. Полученные результаты свидетельствуют о высоких продукционных характеристиках организмов микробиальной петли и низкой эффективности трансформации энергии на более высокие трофические уровни в пелагиали. Приведено сопоставление функциональной роли инфузорий и мезозоопланктона, дается оценка полученным результатам в сравнении с другими районами Мирового океана. Выявлена зависимость потребления первичной продукции микрозоопланктоном от географической широты...
Tipo: Journal Contribution
Palavras-chave: Микробиальная петля; Биотический баланс; Зоопланктон; Первичная продукция; Прибрежная зона; Biotic balance; Primary production; Zooplankton; Coastal zone; Primary production Primary production http://aims.fao.org/aos/agrovoc/c_34329.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/399

Экскреция фосфора зоопланктоном в Черном море
Provedor de dados: 13
Autores: Пархоменко, А. В.
Рассмотрены результаты модельных расчётов экскреции неорганического фосфора зоопланктоном в глубоководной области Чёрного моря. Величины скорости экскреции фосфатов зоопланктоном в слое 0 - 150 м зимой варьировали от 2.45 до 3.29, весной - 4.25 - 8.81, летом - 7.72 - 12.39, осенью - 13.36 - 3.77 мгР·мˉ2·сутˉ¹. Количественная оценка вклада простейших, мезопланктона и желетелого макропланктона в суммарную экскрецию фосфатов указывает на ключевую роль простейших. Вклад простейших в среднем составлял - 51 %, мезопланктона - 32 %, макропланктона - 17 %. Регенерационная первичная продукция зимой изменялась от 17 до 30 %, весной - 30 - 97 %, летом - 93 - 100 %, осенью - 44 - 100 %, в среднем за год 64 %. Обсуждается вопрос о роли "микробиальной петли" в...
Tipo: Journal Contribution
Palavras-chave: Фосфор; Экскреция; Скорость; Зоопланктон; Черное море; Phosphorus; Rate; Excretion; Zooplankton; Black sea Zooplankton Excretion Phosphorus Zooplankton Phosphorus Excretion http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_2750.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/242

Zooplankton-climate linkages in different geographical regions
Provedor de dados: 13
Autores: Piontkovski, S. A.; Hameed, S.
The inter-annual variations of total zooplankton abundance in the Gulf of Maine (1961 ‑ 1991), the North‑East Atlantic (1961 ‑ 1994) and the North Sea (1961 ‑ 1994) were analyzed and related to the Icelandic Low and the Azores High atmospheric pressure systems.  In a similar way the variations of zooplankton biomass in the Gulf of Alaska (1956 ‑ 1980) were related to the Aleutian Low pressure system. Cross‑correlation and spectral density functions were calculated for the zooplankton and the pressure indices.  Regional and global aspects of the relationship between the intensity of the zooplankton fluctuations and the atmospheric centers of action were analyzed.  A discussion on possible mechanisms that may contribute to the dynamic links transferring...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Climate change; Inter-annual variability; Sea level pressure; Зоопланктон; Изменение климата; Межгодовая изменчивость; Давление над уровнем моря Zooplankton Sea level pressure Zooplankton http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2004
URL: http://repository.ibss.org.ua/dspace/handle/99011/131

Diversity and structure of microcrustacean assemblages (Cladocera and Copepoda) and limnological variability in perennial and intermittent pools in a semi-arid region, Bahia, Brazil
Provedor de dados: 76
Autores: Simões,Nadson R.; Ribeiro,Sylvia M. M. S.; Sonoda,Sérgio L.
Temporary wetlands undergo recurrent drought due to the scarcity of water, which disrupts the hydrological connectivity with adjacent aquatic systems. However, some environments retain water for longer periods, allowing greater persistence of the community. The current study evaluated differences in the microcrustacean assemblages and limnological variability between perennial and intermittent pools in a semi-arid region of Brazil. The abiotic features (water temperature, pH, total alkalinity, electrical conductivity and depth) of intermittent pools were affected more than perennial pools due to loss of water volume. This may have contributed to a higher average richness and diversity index in some intermittent pools and differences in the structure of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Temporary wetlands; Invertebrates; "caatinga".
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300006

Chaetognatha of the Brazil-Malvinas (Falkland) confluence: distribution and associations
Provedor de dados: 76
Autores: Crelier,Alina M.; Daponte,María C.
The planktonic chaetognaths from the Brazil-Malvinas (Falkland) confluence, extending between 36º 30' - 50º 5' S and 60º 33' - 41º 7' W, were studied. Ten species were found: Eukrohnia hamata (Möbius, 1875) (Eukrohniidae), Pterosagitta draco (Krohn, 1853) (Pterosagittidae), Sagitta enflata Grassi, 1881, Sagitta gazellae Ritter-Zahony, 1909, Sagitta hexaptera d´Orbigny, 1834, Sagitta lyra Krohn, 1853, Sagitta minima Grassi, 1881, Sagitta planctonis Steinhaus, 1896, Sagitta serratodentata Krohn, 1853, and Sagitta tasmanica Thomson, 1947 (Sagittidae). Sagitta gazellae was the most abundant species followed by E. hamata, S. tasmanica and S. serratodentata. The association analysis among the different species, salinity and temperature revealed two groups of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eukrohniidae; Pterosagittidae; Sagittidae; Southwestern Atlantic; Zooplankton.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000400008

Synchaeta jollyae (Shiel &amp;amp; Koste) (Rotifera, Synchaetidae): an overlooked species or a newcomer in Neotropical freshwaters?
Provedor de dados: 76
Autores: Negreiros,Natalia F.; Santos,Renata M. dos; Oliveira,Laira Lúcia Damasceno de; Santos-Wisniewski,Maria J. dos; Rocha,Odete.
Populations of Synchaeta jollyae (Shiel &amp;amp; Koste, 1993) (Rotifera), a species recently recorded for the first time in Brazil and South America, were analyzed in reservoirs in Southeast Brazil. Sampling was carried out monthly from August 2006 to July 2007 at Furnas Reservoir in the Rio Grande basin, state of Minas Gerais, and in four cascade reservoirs in the Tietê River basin (Barra Bonita, Bariri, Ibitinga and Nova Avanhandava) state of São Paulo, in June and September 2008 and in January and May 2009. Synchaeta jollyae occurred in most samples and periods. From the results obtained it is evident that S. jollyae occurs in water bodies of varied trophic status but reaches larger populations in eutrophic water bodies and during lower temperature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Rotifers; Furnas Reservoir; Tietê River.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000200007

Efectos del herbicida Paraquat sobre el zooplancton
Provedor de dados: 76
Autores: Gagneten,Ana María.
The effects of 0.1; 0.2; 0.4 and 0.8 mlPQ/L were analized on a zooplankton community, to determine the most sensitive species and to analize the occurence of physical abnormalities. A total of 40 taxa were determined. Paraquat affected significantly the zooplankton density but not the species richness. A progressive state of deformation of these organisms was also observed. Paraquat showed to be highly toxic for the zooplankton, so this herbicide should be strictly regulated in aquatic and terrestrial ecosystems.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paraquat; Zooplankton; Mesocosms; Physical abnormalities.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000300005

Distribution of planktonic microcrustaceans (Cladocera and Copepoda) in lentic and lotic environments from the semiarid region in northeastern Brazil
Provedor de dados: 76
Autores: Diniz,Leidiane P.; Morais Júnior,Cláudio S. de; Medeiros,Ittalo L.S.; Silva,Alef J. da; Araújo,Alan P.; Silva,Tâmara A.; Melo Júnior,Mauro de.
Abstract The present study aimed to inventory the biodiversity of planktonic microcrustaceans (Cladocera and Copepoda) in 44 environments from the semiarid region of Brazil, increasing the knowledge about zooplankton community, including phytophilous species. Between 2011 and 2017, organisms were collected in a non - systematic way in the states of Rio Grande do Norte, Pernambuco, Ceará and Paraíba. A total of 60 species of planktonic microcrustaceans were identified, of which 52 were cladocerans and eight were copepods. The basin that presented the highest richness was Pajeú River with 41 species. Nevertheless, the extrapolated number of species shows an increasing tendency for this basin. The genus composition was different between the basins, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Neotropical; Shallow lakes; Caatinga.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100202

Zooplankton metabolism in South African estuaries: does habitat type influence ecological strategies?
Provedor de dados: 5
Autores: Tagliarolo, Morgana; Porri, F; Garvie, C D; Lechman, K; Scharler, U M.
Zooplankton community composition, biomass and metabolism can vary drastically over space and time in subtropical estuaries. Changing environmental conditions can affect communities differently, depending on the characteristics of the species involved. In the present study, we compared the rates of oxygen consumption of the dominant zooplankton taxa living in permanently open and in temporally open/closed estuaries. The metabolic response was tested at four temperatures experienced by the animals in their natural environment. Zooplankton from the temporally open/closed estuary showed low activation energies and low rate of metabolism at the highest temperature tested. Animals from the permanently open estuary had higher respiration rates at increased...
Tipo: Text
Palavras-chave: Metabolism; Zooplankton; Respiration; Estuary; Thermal sensitivity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00513/62425/66904.pdf

Detection and analysis of unusual events in long-term zooplankton and nekton data sets from North Inlet Estuary, South Carolina, USA
Provedor de dados: 5
Autores: Allen, Dm; Edwards, D; Feller, Rj; Hutchinson, Se; Ogburnmatthews, V.
Unusual events and disturbances are important sources of variability in ecological data sets, but methods for their detection and analysis are not readily available. We have adapted widely-used quality control methods to identify and quantify unusual events in ten-year-long data sets from the relatively pristine North Inlet Estuary, South Carolina, USA.-Seasonal patterns and long-term trends were first removed from biweekly zooplankton and nekton abundance and corresponding water temperature and salinity data using nonparametic smoothing algorithms. The Shewhart Control Chart Method, a quantitative technique used for quality control in industrial manufacturing processes, was used to define four types of events according to intensity and duration....
Tipo: Text
Palavras-chave: Zooplankton; Nekton; Estuary; Long-term; Disturbance.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20389/18056.pdf

Trophic relationships in a deep Mediterranean cold-water coral bank (Santa Maria di Leuca, Ionian Sea)
Provedor de dados: 5
Autores: Carlier, A.; Le Guilloux, E.; Olu, Karine; Sarrazin, Jozee; Mastrototaro, F.; Taviani, M.; Clavier, J.
Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta C-13 and delta N-15) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral...
Tipo: Text
Palavras-chave: Particulate organic matter; Zooplankton; Stable isotopes; Food web; Mediterranean Sea; Benthic community; Cold water corals.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7450.pdf

Copepods Boost the Production but Reduce the Carbon Export Efficiency by Diatoms
Provedor de dados: 5
Autores: Moriceau, Brivaela; Iversen, Morten H.; Gallinar, Morgane; Evertsen, Antti-jussi O.; Le Goff, Manon; Beker, Beatriz; Boutorh, Julia; Corvaisier, Rudolph; Coffineau, Nathalie; Donval, Anne; Giering, Sarah L. C.; Koski, Marja; Lambert, Christophe; Lampit, Richard S.; Le Mercier, Alain; Masson, Annick; Stibor, Herwig; Stockenreiter, Maria; De La Rocha, Christina L.
The fraction of net primary production that is exported from the euphotic zone as sinking particulate organic carbon (POC) varies notably through time and from region to region. Phytoplankton containing biominerals, such as silicified diatoms have long been associated with high export fluxes. However, recent reviews point out that the magnitude of export is not controlled by diatoms alone, but determined by the whole plankton community structure. The combined effect of phytoplankton community composition and zooplankton abundance on export flux dynamics, were explored using a set of 12 large outdoor mesocosms. All mesocosms received a daily addition of minor amounts of nitrate and phosphate, while only 6 mesocosms received silicic acid (dSi). This resulted...
Tipo: Text
Palavras-chave: Biogenic silica; POC; Marine snow; Zooplankton; Mesocosm; Bay of Hopavagen; Plankton community; Biological pump.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00469/58029/60433.pdf

Surveillance Ecologique du site du Blayais - Année 2015
Provedor de dados: 5
Autores: Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Herve; Doremus, Sandrine; Agion, Tony; Peset, Sébastien; Hervio Heath, Dominique; Sautour, Benoit; Parra, René; Nowaczyck, Antoine; Bachelet, Guy; Leconte, Michel.
Monitoring n° 38 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2015. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique.; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Benthic macrofauna.; Microbiology.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00327/43800/43361.pdf

Environmental fate of chlordecone in coastal habitats: recent studies conducted in Guadeloupe and Martinique (Lesser Antilles)
Provedor de dados: 5
Autores: Dromard, Charlotte R.; Devault, Damien; Bouchon-navaro, Yolande; Allénou, Jean-pierre; Budzinski, Hélène; Cordonnier, Sébastien; Tapie, Nathalie; Reynal, Lionel; Lemoine, Soazig; Thomé, Jean-pierre; Thouard, Emmanuel; Monti, Dominique; Bouchon, Claude.
The organochlorine pollution by chlordecone, an insecticide spread in the past in banana plantations, is now recognized as a major ecological, economic, and social crisis in Guadeloupe and Martinique Islands. Due to its physical and chemical properties, this molecule is particularly persistent in the natural environment. Volcanic soil of Guadeloupe and Martinique contain allophanes (amorphous clays), which favor chlordecone trapping due to their structure and physical properties. Thus, with this trapping ability, allophanes serve as a vector allowing chlordecone to contaminate runoff waters and, finally, the sea. In the present publication, several studies recently conducted in the Lesser Antilles have been compiled in order to evaluate the desorption of...
Tipo: Text
Palavras-chave: Organochlorine pollution; Desorption; Allophane; Zooplankton; Trophic food webs; Bioamplification.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59551/62539.pdf

Similar patterns of patterns of community organization characterize distinct groups of different trophic levels in the plankton of the NW Mediterranean Sea
Provedor de dados: 5
Autores: Raybaud, V.; Tunin-ley, A.; Ritchie, M. E.; Dolan, J. R.
Planktonic populations were sampled over a 4 week period in the NW Mediterranean, at a site subject to little vertical advection during the Dynaproc 2 cruise in 2004. The characteristics of the phytoplankton, the tintinnid community and the zooplankton have recently been described in detail. Based on these studies, we compared the characteristics of 3 well-circumscribed assemblages of different trophic levels: Ceratium of the phytoplankton, herbivorous tintinnids of the microzooplankton, and large (&gt; 500 mu m) omnivorous and carnivorous copepods of the metazoan zooplankton. In all three groups, diversity as H' or species richness, was less variable than concentration of organisms. Plotting time against species accumulation, the curves approached plateau...
Tipo: Text
Palavras-chave: Species abundance distributions; Diversity; Zooplankton; Microzooplankton; Phytoplankton; Biodiversity.
Ano: 2009
URL: https://archimer.ifremer.fr/doc/00208/31970/30411.pdf

Production de juvéniles de bar (Dicentrarchus labrax) en marais. Etude de trois séquences alimentaires de sevrage
Provedor de dados: 5
Autores: Buchet, Vincent; Palvadeau, Hubert; Boussard, O.
Trials on the seabass weaning in atlantic marshes (Roux, 1993), have shown that the use of frozen prey improved this step and reduced his resulting stress. During the present study, which must confirmed these preliminary results, three alimentary sequences were tested. 1) natural zooplankton, weaning pellets, as control, 2) natural zooplankton, inert artemia (intensively produced), weaning pellets, 3) natural zooplankton, natural frozen zooplankton (harvested), weaning pellets. The achieved results show that weaning with intermediary phases (sequences 2 or 3) yield best results. Furthermore the phase with artemia yields, systematically, better results than with harvested zooplankton ; then artemia seems a excellent substitute food representing a...
Tipo: Text
Palavras-chave: Bar; Dicentrarchus labrax; Juvéniles; Elevage extérieur; Sevrage; Artémias; Zooplancton; Seabass; Dicentrarchus labrax; Juvenile; Outdoor rearing; Weaning; Artemia; Zooplankton.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00425/53683/54527.pdf

Cross talk: Two way allelopathic interactions between toxic Microcystis and Daphnia
Provedor de dados: 5
Autores: Bojadzija Savic, Gorenka; Bormans, Myriam; Edwards, Christine; Lawton, Linda; Briand, Enora; Wiegand, Claudia.
Due to eutrophication, freshwater ecosystems frequently experience cyanobacterial blooms, many of which produce bioactive metabolites that can affect vertebrates and invertebrates life traits. Zooplankton are able to develop tolerance as a physiological response to cyanobacteria and their bioactive compounds, however, this comes with energetic cost that in turn influence Daphnia life traits and may impair populations. Vice versa, it has been suggested that Daphnia are able to reduce cyanobacterial dominance until a certain cyanobacterial density; it remains unclear whether Daphnia metabolites alone influence the physiological state and bioactive metabolites production of cyanobacteria. Hence, this study investigates mutual physiological reactions of toxic...
Tipo: Text
Palavras-chave: Zooplankton; Cyanobacteria; Secondary metabolites; PCC7806; Toxic; Oxidative stress.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00624/73653/76105.pdf

Etude preliminaire du zooplancton du Detroit de Davis. Relations trophiques entre zooplancton et poissons
Provedor de dados: 5
Autores: Beaudouin, Jacqueline.
Sampling was carried out during 1970 at 22 stations from 72 degree -62 degree N; the sampling period varied from 21 minutes - 42minutes. 12 species of zooplankton were recovered consisting of specimens of copepods, euphausiids, chaetognathes, medusae, amphipods, pteropods and decapods. They were most abundant in the central zone, especially in 2 areas of maximum concentration (where the catch exceeded 100 cm super(3)) located 72 degree N and 67 degree N. Fish captured included young cod, rockfish and halibut; they were found mostly around these areas of maximum zooplankton concentrations. Only immature fish were recovered in this region; the adults had deserted these waters due to unusual and permanent low temperature water in the superficial layers.
Tipo: Text
Palavras-chave: Greenland; Davies strait; Hydrology; Trophic interaction; Fishes; Zooplankton.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2225.pdf

Nutrition chez des copepodes en milieu lagunaire mediterraneen en fonction de la concentration en particules et de la temperature
Provedor de dados: 5
Autores: Gaudy, R; Pagano, M.
The zooplankton of an eutrophic brackish lagoon (Etang de Berre), near Marseille (France) was studied during an annual cycle. It was characterized by large populations of a pelagic copepod (Acartia tonsa ). Grazing on natural particles by this species was investigated. Adults were able to use an extended range of particle sizes, but showed selectivity for particles concentration was observed (14 mu m). Temperature and particles concentration appear to modify the selectivity behavior. Juvenile stages could also catch particles of various size but did not show the same selectivity for the peak particles as adults. Daily food ration was high comparatively to open-sea copepods. Taking into account several results obtained on food ration, egg production and...
Tipo: Text
Palavras-chave: Copepoda; Lagoons; Energy budget; Seasonal variations; Particle concentration; Zooplankton; Food availability; Temperature effects; Nutrition.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1526.pdf

Hydroclimatic relationships with planktonic time series from 1975 to 1992 in the North Sea off Gravelines, France
Provedor de dados: 5
Autores: Le Fevre-lehoerff, Geneviève; Ibanez, Frédéric; Poniz, Paola; Fromentin, Jean-marc.
Planktonic time series collected since 1975 off Gravelines, France, were analysed in the context of climatic changes. Principal component analysis and the cumulative sums method wereapplied to 30 data sets which included meteorological and hydrological parameters and planktonic descriptors. Eight groups of biological descriptors were linked to external parameters. The study of winds highlighted the importance of cyclonic and anticyclonic influences. Seven year cycles appeared clearly in air temperature and in species abundance with different trophic levels for species such as Ternora longicornis, Oikopleura dioica and Sagitta setosa, whereas an 11 yr cycle appeared for Pseudocalanus minutus. A 3 to 4 yr cycle was detected for atmospheric pressure,...
Tipo: Text
Palavras-chave: Time series; Zooplankton; Meteorology; Hydrology; Southern North Sea.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00033/14455/11757.pdf

Biochemical substrates expenses and respiration at short-term starvation of marine planktonic animals
Provedor de dados: 5
Autores: Pavlova, Z; Morozova, A; Gaudy, R; Shchepkin, V.
One of the most important indices at estimation of productivity characteristics of hydrobionts is oxygen consumed in the process of respiration. Usually respiration (standard metabolism) is measured in small-volume respirometres (30-50 ml) where animals' activity is considerably restricted. It may underestimate respiration in comparison to natural one. Therefore respirometres of larger volume were used. Simultaneously under same conditions we tried to estimate energy requirements by expense of main biochemical components of organic matter (lipids, protein, glycogen). Results were used to calculate energy budget and to compare energy expenditures, measured according to consumed oxygen and tissue substrates expense.
Tipo: Text
Palavras-chave: Euchirella curticauda; Pleuromamma abdominalis; Scolecithrix danae; Ostracoda; Copepoda; Starvation; Oxygen consumption; Biochemical composition; Zooplankton; Energy budget; Respiration; Biological production.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1520.pdf

Pyruvate kinase activity as index of carbohydrate assimilation by mesozooplankton: an early field implementation in the Bay of Biscay, NE Atlantic
Provedor de dados: 5
Autores: Bergeron, Jean-pierre; Herbland, Alain.
Estimates of carbohydrate assimilation within the mesozooplankton compartment are a fundamental concern in oceanography because they give a general expression of the biologically-regulated incorporation of metabolic fuel produced from inorganic nutrients by phytoplankton in the sea. A new tool is proposed for the assessment of such processes. It is based on the measurement of the activity of an enzyme, pyruvate kinase (PK), on samples of the whole mesozooplankton community. Here, the results are presented of an early attempt at such an implementation in the Bay of Biscay (north-east Atlantic) in springtime. A main area situated in front of an estuary (Gironde) has been extensively studied-the same sampling grid was covered on three occasions (two 20 day...
Tipo: Text
Palavras-chave: Bay of Biscay; Zooplankton; Phytoplankton; Pyruvate kinase; Carbohydrate.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-452.pdf

Structure and functioning of Epipelagic Mesozooplankton in the Mediterranean Sea during spring Peacetime cruise 2017
Provedor de dados: 5
Autores: Feliu, Guillermo; Carlotti, François; Pagano, Marc.
Tipo: Text
Palavras-chave: Zooplankton; Mediterranean Sea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00599/71126/69441.pdf

Pheopigment dynamics, zooplankton grazing rates and the autumnal ammonium peak in a Mediterranean lagoon
Provedor de dados: 5
Autores: Collos, Yves; Husseini Ratrema, Julie; Bec, Béatrice; Vaquer, André; Hoai, Thong Lam; Rougier, Claude; Pons, Virginie; Souchu, Philippe.
The dilution technique was used to estimate chlorophyll and pheopigment, net and gross production as well as zooplankton grazing over a 12-month period in a coastal lagoon in Southern France. Chlorophyll a (Cha) based gross growth rates of phytoplankton ranged from undetectable in February to 2.6 day(-1) in June, corresponding to 3.8 divisions per day. Cha-based grazing rates ranged from undetectable in February to 1.1 d(-1) in June. The seasonal growth pattern of picoplankton was similar to that of the whole community, with a peak in July, corresponding to four divisions per day. Grazing processes represented from 20 to 150% of the phytoplankton daily growth, and the grazing pressure was stronger on small phytoplankton cells than on larger cells. Gross...
Tipo: Text
Palavras-chave: Zooplankton; Ammonium; Pheopigments; Degradation; Growth; Phytoplankton.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-727.pdf

Surveillance écologique du centre nucléaire de production d'électricité du Blayais. Année 2018
Provedor de dados: 5
Autores: Rumebe, Myriam; Auby, Isabelle; Blanchet, Hugues; Fouet, Marie; Gouriou, Laure; Hervio Heath, Dominique; Sautour, Benoit; Savoye, Nicolas; Sottolichio, Aldo.
Monitoring n° 41 of the Blayais nuclear power plant takes into account studies conducted between April and November 2018. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Microbiology; Benthic macrofauna.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61660/65576.pdf

Biomass, metabolism and nutrition of zooplankton in the Gulf of Lions (NW Mediterranean)
Provedor de dados: 5
Autores: Gaudy, R; Youssara, F; Diaz, F; Raimbault, P.
Zooplankton biomass was measured at 20 stations located along five coastal-offshore transects in the Gulf of Lions (NW Mediterranean) during spring 1998 and winter 1999, using two nets equipped with 200 and 80 Pm mesh. Biomass was twice as abundant in spring. It increased toward the coast and the west of the gulf and was positively correlated to chlorophyll, primary production and organic particulate matter and negatively to temperature and salinity. The enrichment effect of Rhone river input and the oligotrophic influence of the north Mediterranean current (NMC) were the main distribution factors of zooplankton biomass. Higher biomass was obtained in coastal stations with the 80 mum net, which sampled more efficiently young larval stages and nauplii....
Tipo: Text
Palavras-chave: Zooplankton; Métabolisme; Cycle saisonnal; Golfe du Lion; Zooplankton; Metabolism; Seasonal cycle; Gulf of Lions.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00321/43262/42993.pdf

Surveillance Ecologique du site du "Blayais" - année 2004
Provedor de dados: 5
Autores: Quintin, Jean-yves; Castaing, Patrick; Jouanneau, Jean-marie; Oggian, Georges; Leconte, Michel; Parra, René; Sautour, Benoît; Bachelet, Guy; Chaurial, Bernard; Gournier, Nathalie.
Monotoring n° 27 of the BLAYAIS nuclear power plant takes into account studies conducted between March and November 2004. Physicochemistry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, Bathymetry, are reported.
Tipo: Text
Palavras-chave: Bathymetry; Benthic macrofauna; Zooplankton; Bacteriology; Hydrobiology; Physicochemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Bathymétrie; Macrofaune benthique; Zooplancton; Microbiologie; Hydrologie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-1024.pdf

Zooplankton nutrition study under conditions close to natural with the use of radioactive phosphorus
Provedor de dados: 5
Autores: Pavlovskaya, T; Zesenko, A.
Lack of a sensitive method for in situ study of the nutrition quantitative characteristics (and food balance in particular) for zooplankton populations in low-productivity regions was the reason for developing one. For the basis of such a method the authors selected the property of radioactive phosphorus isotopes of fast and effective embedding into all plankton components. The method described above allowed not only to quantitatively determine the consumption and transportation of a substance by individual species and populations of zooplankton; it opens new horizons for investigation of the zooplanktonic association role in regeneration of mineral phosphorus.
Tipo: Text
Palavras-chave: Phosphorus cycle; Phosphorus isotopes; Radioactive tracers; Analytical techniques; Food consumption; Zooplankton; Nutrition.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1524.pdf

Surveillance Ecologique du site du "Blayais" - année 2017
Provedor de dados: 5
Autores: Rumebe, Myriam; Auby, Isabelle; Hervio Heath, Dominique; Sottolichio, Aldo; Sautour, Benoit; Savoye, Nicolas; Derriennic, Hervé; Blanchet, Hugues; Leconte, Michel; Gouilleux, Benoit; Fouet, Marie; Agion, Tony.
Monitoring n° 40 of the Blayais nuclear power plant takes into account studies conducted between April and November 2017. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Benthic macrofauna; Gironde estuary; Monitoring; Bathymetry; Microbiology.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00477/58876/61407.pdf

Surveillance Ecologique du site du Blayais - Année 2014
Provedor de dados: 5
Autores: Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Herve; Schmidt, Sabine; Doremus, Sandrine; Agion, Tony; Hervio Heath, Dominique; Sautour, Benoît; Parra, René; Dindinaud, François; Bachelet, Guy; Leconte, Michel.
Monitoring n° 37 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2014. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Zooplancton; Macrofaune benthique.; Bathymétrie; Estuaire de la Gironde; Surveillance; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Benthic macrofauna.; Bathymetry; Microbiology; Gironde estuary; Monitoring.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00333/44424/44088.pdf

Les activités de production - conchyliculture
Provedor de dados: 5
Autores: Deschamps, Gerard; Miossec, Dominique; Pannier, Thierry; Huet, Jerome; Lorance, Pascal.
These studies of halieutic ecology produced at the request of Electricité de France by the French Institute of Research for Exploitation of the Sea in the Normand Breton Gulf must constitute one of the elements making it possible to come to a conclusion or not on the feasibility of the tidal power plant construction project; these studies have three parts: The first part discusses halieutic zooplankton. In the first place, the main species that constitute the exploitable living resources are considered, observed from the first stages of their life, in the egg or at different larval stages preceding the juvenile state. Also of interest are certain holoplanktonic groups. The whole of these observations establishes the status of zooplanktonic populations...
Tipo: Text
Palavras-chave: Whelk; Mussels; Oysters; Shellfish farming; Professional fishing; Holoplankton; Zooplankton; France; Conchyliculture; Buccin; Pêche professionnelle; Usine marémotrice; Zooplancton; Holoplancton; Ecologie Halieutique.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/rapport-2333.pdf

Les chaines alimentaires naturelles et l'aquaculture
Provedor de dados: 5
Autores: Barnabe, G.
Aquaculture sets up manipulation of natural food chains. This paper describes some utilizations of photosynthetic bacteria, phytoplankton and zooplankton taken out sewage ponds, wetlands or neritic waters.
Tipo: Text
Palavras-chave: Bacteria; Photosynthesis; Aquaculture; Ecosystems; Zooplankton; Phytoplankton; Food chains.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1254.pdf

Space and time variations in zooplankton distribution south of Marseilles
Provedor de dados: 5
Autores: Gaudy, R; Champalbert, G.
The mesozooplankton distribution in the upper water layer (up to 200 m) off Marseilles (NW Mediterranean Sea) was studied during 22 cruises performed between March 1992 and February 1995. Four stations (M1, M3, M5 and M7) were investigated along a coast-open sea transect. Spatial and seasonal variations of zooplankton were described using different quantitative parameters: biomass (dry weight, carbon, nitrogen), displacement volume (biovolume) and abundance of total organisms. C/N ratio, dry weight per individual and volume per individual were also calculated. The seasonal quantitative variations occurring at the four stations were not well synchronized. Annual maximum biomass was observed during spring and summer at M1 but only in early spring at the...
Tipo: Text
Palavras-chave: Zooplancton; Distribution spatio-temporelle; Gradient côte-large; Méditerannée nord-occidentale; Zooplankton; Space-time distribution; Open-coast sea gradient; Northwestern Mediterranean.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00325/43641/43225.pdf

Time series analysis of interrupted long-term data set (1961-1991) of zooplankton abundance in Gulf of Maine (northern Atlantic, USA)
Provedor de dados: 5
Autores: Licandro, P; Conversi, A; Ibanez, F; Jossi, J.
The main interannual and seasonal signals have been extracted from a multi-decadal data set of zooplankton collected with the Continuous Plankton Recorder in the Gulf of Maine, from January 1961 to December 1991. The monthly abundances of seven species or genera of copepods representing the dominant biomass in the area were considered. The presence of a large consecutive gap (35 months) prevented the use of statistical methods for the prediction of missing data. The eigen-vector filtering (EVF) method was then used on the original time series, while retaining the missing values. For each zooplankton taxon, two principal modes of variability (F-1 and F-2) were extracted, representing the interannual and seasonal variations, respectively. Results of EVF...
Tipo: Text
Palavras-chave: Calanus finmarchicus; Golfe du Maine; Données manquantes; Séries temporelles; Zooplancton; Calanus finmarchicus; Gulf of Maine; Missing data; Time series analysis; Zooplankton.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00322/43342/42885.pdf

Matching zooplankton abundance and environment in the South Indian Ocean and Southern Ocean
Provedor de dados: 5
Autores: Godet, Claire; Robuchon, Marine; Leroy, Boris; Cotté, Cedric; Baudena, Alberto; Da Silva, Ophélie; Fabri-ruiz, Salomé; Lo Monaco, Claire; Sergi, Sara; Koubbi, Philippe.
Distinguishing regions based on the geographic distribution of both abiotic factors and living organisms is an old but still actual central issue for biogeographers. In the Southern Ocean, the few existing regionalization studies have been carried out either at very large scales or on the relatively small region around the Sub-Antarctic islands of Kerguelen and the Crozet archipelagos. However, regionalization studies at meso-scales (100–300 km) covering the Indian part of the Southern Ocean and adjacent South Indian Ocean are scarce. These waters, ranging from the Subtropical to the polar region, are home to large populations of well-studied top predators that depend on the biomass of less known mid-trophic level species such as zooplankton. To fill those...
Tipo: Text
Palavras-chave: Bioregionalization; Southern Ocean; Indian Ocean; Pelagic ecosystem; Zooplankton; Continuous plankton recorder.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00643/75474/76309.pdf

Utilisation du submersible Cyana pour l'etude du macroplancton fragile
Provedor de dados: 5
Autores: Laval, P.
The gelatinous macroplanktonic organisms living in the deep sea can only be studied with manned submersibles. There is presently in increasing interest in the study of the role of this part of the pelagic ecosystem, because they are strongly involved in the transformation of the particulate organic matter. Their transparency, small size and mobility present technical challenges, unanticipated by the designers of the first submersibles, aimed at the sea bottom observation. Despite these limitations, the use of conventional submersibles has brought very interesting results. It is hoped that engineers will take into account the requirements of pelagic observations in the design of future submersibles.
Tipo: Text
Palavras-chave: Pelagic environment; Zooplankton; Ecosystems; Deep water; Manned vehicles.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1152.pdf

Oyster Farming, Temperature, and Plankton Influence the Dynamics of Pathogenic Vibrios in the Thau Lagoon
Provedor de dados: 5
Autores: Lopez-joven, Maria-carmen; Rolland, Jean-luc; Haffner, Philippe; Caro, Audrey; Roques, Cecile; Carre, Claire; Travers, Marie-agnes; Abadie, Eric; Laabir, Mohamed; Bonnet, Delphine; Destoumieux-garzon, Delphine.
Vibrio species have been associated with recurrent mass mortalities of juvenile oysters Crassostrea gigas threatening oyster farming worldwide. However, knowledge of the ecology of pathogens in affected oyster farming areas remains scarce. Specifically, there are no data regarding (i) the environmental reservoirs of Vibrio populations pathogenic to oysters, (ii) the environmental factors favoring their transmission, and (iii) the influence of oyster farming on the persistence of those pathogens. This knowledge gap limits our capacity to predict and mitigate disease occurrence. To address these issues, we monitored Vibrio species potentially pathogenic to C. gigas in 2013 and 2014 in the Thau Lagoon, a major oyster farming region in the coastal French...
Tipo: Text
Palavras-chave: Vibrio; Shellfish farming; Bivalve mollusks; Mortality outbreak; Phytoplankton; Zooplankton.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00463/57479/59598.pdf

The nutritive value of the detritus for the marine plankton animals
Provedor de dados: 5
Autores: Pechen-finenko, G.
The author reviews the scientific works dealing with the role and the nutritive value of detritus particles for zooplankton.
Tipo: Text
Palavras-chave: Bacteria; Nutrition; Zooplankton; Detritus; Nutritive value.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1529.pdf

Contribution à l'étude de faisabilité d'une usine marémotrice dans le Golfe normano-breton - Zooplanctonologie halieutique
Provedor de dados: 5
Autores: Martin, Jocelyne; Halgand, Daniel.
Zooplankton study presented in this paper, is one of the three parts of fish ecology study undertaken by IFREMER in 1983 on Electricité de France request. The present work draws up an inventory of young stages from meroplanktonic species (fish eggs and larvae, crustacean larvae and postlarvae) in the area studied (a part of gulf of St Malo) together with rather large holoplanktonic organisms. Sampling period (from March to September) and periodicity were choosen according to study of hatching area and period of economical crustaceans. An hydrological study was carried out in the same time.
Tipo: Text
Palavras-chave: Zooplancton; Ichtyoplancton; Larves; Crustaces; Hydrologie; Manche; Zooplankton; Ichtyoplankton; Crustacean; Larvae; Hydrology; Channel.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00004/11539/8125.pdf

Climate change may have minor impact on zooplankton functional diversity in the Mediterranean Sea
Provedor de dados: 5
Autores: Benedetti, Fabio; Ayata, Sakina-dorothee; Irisson, Jean-olivier; Adloff, Fanny; Guilhaumon, Francois.
Aim To assess the impact of climate change on the functional diversity of marine zooplankton communities. Location The Mediterranean Sea. Methods We used the functional traits and geographic distributions of 106 copepod species to estimate the zooplankton functional diversity of Mediterranean surface assemblages for the 1965-1994 and 2069-2098 periods. Multiple environmental niche models were trained at the global scale to project the species habitat suitability in the Mediterranean Sea and assess their sensitivity to climate change predicted by several scenarios. Simultaneously, the species traits were used to compute a functional dendrogram from which we identified seven functional groups and estimated functional diversity through Faith's index. We...
Tipo: Text
Palavras-chave: Climate change; Functional diversity; Mediterranean Sea; Niche modelling; Null model; Zooplankton.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60118/63460.pdf

Ecotron - Embiez 8 - Modélisation de la production d'organismes planctoniques dans les bassins
Provedor de dados: 5
Autores: Nival, Paul; Malara, G.
Choosing the best conditions for the cultivation of plankton in tanks is a difficult deal, which is generally solved by means of subjective estimations. A better way of looking for these conditions is the use of a mathematical model. _ We have tried to built a model that accounts for the physical and bio­logical characteristics of the tanks. The data concerning the physiological characteristics of the different group of organisms encountered are too scarce to allow all of them to be taken into account. The system studied here is composed of nutrients, phytoplankton, herbivorous copepods and rotifers to which benthic algae have been added. With the hypothesis of 3 elements (phyto - zooplankton - nutrients) it can be showed that when an equilibrium is...
Tipo: Text
Palavras-chave: Phytoplancton; Zooplancton; Culture; Modèle mathématique; Phytoplankton; Zooplankton; Culture; Mathematical model.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41673/40882.pdf

Role de Sprattus sprattus (Linne, 1758) dans l'utilisation du zooplancton des eaux Roumaines de la Mer Noire
Provedor de dados: 5
Autores: Porumb, Loan I.
Feeding of the S. sprattus was studied comparatively with the dynamics of the zooplanktonic trophic base. In April, the sprat consumed 1,459 t of zooplankton, especially Acartia clausi (84 per cent). Zooplanktonic productivity was 30 per cent due to Acartia clausi, and the sprat consumed 56 per cent of this copepod production. In April, the wt growth of the sprat was 115 t. In May, the sprat consumed 6.201 t of zooplankton, that resulted in a fish production of 492 t. A clausi contributed 36.41 per cent to the zooplankton production and the sprat fed on copepods at a level of 93 per cent. In June, only 1,094 t of zooplankton resulted in a fish production of 87 t. Zooplanktonic production was 60 per cent due to A. clausi, and only 12 per cent of this was...
Tipo: Text
Palavras-chave: Romania; Black Sea; Meroplankton; Copepoda; Zooplankton; Feeding; Sprattus sprattus.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2164.pdf

Spatial and temporal variability of zooplankton off New Caledonia (Southwestern Pacific) from acoustics and net measurements
Provedor de dados: 5
Autores: Smeti, Houssem; Pagano, Marc; Menkes, Christophe; Lebourges-dhaussy, Anne; Hunt, Brian P. V.; Allain, Valerie; Rodier, Martine; De Boissieu, Florian; Kestenare, Elodie; Sammari, Cherif.
Spatial and temporal distribution of zooplankton off New Caledonia in the eastern Coral Sea was studied during two multidisciplinary cruises in 2011, during the cool and the hot seasons. Acoustic measurements of zooplankton were made using a shipborne acoustic Doppler current profiler (S-ADCP), a scientific echosounder and a Tracor acoustic profiling system (TAPS). Relative backscatter from ADCP was converted to biomass estimates using zooplankton weights from net-samples collected during the cruises. Zooplankton biomass was estimated using four methods: weighing, digital imaging (ZooScan), ADCP and TAPS. Significant correlations were found between the different biomass estimators and between the backscatters of the ADCP and the echosounder. There was a...
Tipo: Text
Palavras-chave: South Pacific; Acoustics; Zooplankton; Vertical migration; Water masses; Mesoscale dynamics.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00297/40809/39836.pdf

Production de chitine par les crustaces du zooplancton de la baie de Calvi (Corse)
Provedor de dados: 5
Autores: Gervasi, E; Jeuniaux, C; Dauby, P.
Chitin was estimated in samples of planktonic crustaceans living in Calvi Bay (Corsica). The percentages of chitin, with respect to dry weight, are comprised between 3.10% in Clausocalanus spp. and 12.22% in Cladocera (mainly Evadne ). The percentage of chitin remained approximatively constant during larval development in Calanus helgolandicus (3.26%). Using these results and the values of total biomass and production estimated by Dauby (1985) at the same place during a complete annual cycle (1983-1984), chitin biomass and production were calculated for every planktonic crustacean species (or group of species) and for the whole crustacean plankton. Daily chitin production was maximum during May (20.06 mg.m super(-2)/d). As far as the whole year is...
Tipo: Text
Palavras-chave: Copepoda; Biological production; Zooplankton.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-1373.pdf

Metabarcoding on planktonic larval stages: an efficient approach for detecting and investigating life cycle dynamics of benthic aliens
Provedor de dados: 5
Autores: Couton, Marjorie; Comtet, Thierry; Le Cam, Sabrina; Corre, Erwan; Viard, Frédérique.
High-throughput sequencing (HTS) technologies offer new promise to support surveillance programs targeting marine non-indigenous species (NIS). Metabarcoding might surpass traditional monitoring methods, for example through its ability to detect rare species, a key feature in early detection of NIS. Another interest of this approach is the identification of organisms difficult to identify based on morphology only (e.g., early developmental stages), making it relevant in the context of management programs. Because many marine benthic NIS have a biphasic benthopelagic life cycle, targeting their pelagic larval stages in zooplankton may allow early detection and assessment of their establishment and potential spread. We illustrate this approach with an...
Tipo: Text
Palavras-chave: Zooplankton; Time-series; Non-indigenous species; Estuary; High-throughput sequencing; Surveillance; Monitoring.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00599/71127/69442.pdf

Approche systémique des potentialités de production secondaire pélagique: inférences de fluctuations interannuelles
Provedor de dados: 5
Autores: Bergeron, Jean-pierre.
Une méthode d'estimation des potentialités de production secondaire pélagique est proposée, tirant profit de l'homologie interspécifique de certains processus métaboliques élémentaires. Elle consiste à mesurer l'activité de l'aspartate transcarbamylase (A TC), enzyme contribuant à la biosynthèse de composants de base des acides nucléiques, sur des échantillons du peuplement mésozooplanctonique total. L'exécution de onze campagnes au cours des périodes printanières de trois. années consécutives, de 1978 à 1980, a permis d'appliquer cette approche à un écosystème néritique de région tempérée, situé au large de la côte nord de la Bretagne (Manche occidentale). Les onze séries de données ainsi acquises prêtent à caractériser les traits essentiels de...
Tipo: Text
Palavras-chave: Aspartate transcarbamylase; Écosystème pélagique; Manche; Production; Zooplancton; Aspartate transcarbamylase; Pelagic ecosystem; English Channel; Production; Zooplankton.
Ano: 1986
URL: https://archimer.ifremer.fr/doc/00072/18315/15884.pdf

Zooplankton production in the Mediterranean Sea
Provedor de dados: 5
Autores: Greze, V.
An attempt is made to calculate the specific production of major zooplankton groups using a physiological method proposed by Winberg. The present report is based on material obtained from 50 stations in the Aegean and Adriatic Seas; Tunisian Strait and Algerian-Provencal basin. The algorithm of Zharov, used by the author, includes the data biomass, abundance, relation between metabolism at given temperature and organism, dependence of production upon metabolism, and the food utilization coefficient for growth.
Tipo: Text
Palavras-chave: MED; Body weight; Biomass; Growth; Food conversion; Temperature effects; Animal metabolism; Secondary production; Zooplankton.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1513.pdf

Modelling secondary production in the Norwegian Sea with a fully coupled physical/primary production/individual-based Calanus finmarchicus model system
Provedor de dados: 5
Autores: Hjøllo, Solfrid Sætre; Huse, Geir; Skogen, Morten D.; Melle, Webjørn.
The copepod Calanus finmarchicus is the dominant species of the meso-zooplankton in the Norwegian Sea, and constitutes an important link between the phytoplankton and the higher trophic levels in the Norwegian Sea food chain. An individual-based model for C. finmarchicus, based on super-individuals and evolving traits for behaviour, stages, etc., is two-way coupled to the NORWegian ECOlogical Model system (NORWECOM). One year of modelled C. finmarchicus spatial distribution, production and biomass are found to represent observations reasonably well. High C. finmarchicus abundance is found along the Norwegian shelf-break in the early summer, while the overwintering population is found along the slope and in the deeper Norwegian Sea basins. The timing of the...
Tipo: Text
Palavras-chave: Calanus finmarchicus; Zooplankton; IBM; NORWECOM; End-to-end modelling; North-East Atlantic.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00076/18690/16242.pdf

Surveillance Ecologique du site du Blayais - Année 2011
Provedor de dados: 5
Autores: Quintin, Jean-yves; Etcheber, Henri; Sottolichio, Aldo; Oggian, Georges; Derriennic, Herve; Mallet, Céline; Roux Ducept, Alexandra; Sautour, Benoît; Parra, René; Bachelet, Guy; Leconte, Michel.
Monitoring n° 34 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2011. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique.; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Benthic macrofauna.; Microbiology.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00333/44415/44090.pdf

Contribution to the understanding of the cycle of the protozoan parasite Marteilia refringens
Provedor de dados: 5
Autores: Arzul, Isabelle; Chollet, Bruno; Boyer, S.; Bonnet, D.; Gaillard, Juliette; Baldi, Yoann; Robert, Maeva; Joly, Jean-pierre; Garcia, Celine; Bouchoucha, Marc.
The paramyxean parasite Marteilia refringens infects several bivalve species including European flat oysters Ostrea edulis and Mediterranean mussels Mytilus galloprovincialis. Sequence polymorphism allowed definition of three parasite types ‘M’, ‘O’ and ‘C’ preferably detected in oysters, mussels and cockles respectively.Transmission of the infection from infected bivalves to copepods Paracartia grani could be experimentally achieved but assays fromcopepods to bivalves failed. In order to contribute to the elucidation of the M. refringens life cycle, the dynamics of the infection was investigated in O. edulis, M. galloprovincialis and zooplankton over one year in Diana lagoon, Corsica (France). Flat oysters appeared non-infected while mussels were infected...
Tipo: Text
Palavras-chave: Bivalves; Marteilia refringens; Copepods; Paracartia latisetosa; Zooplankton; Parasite life cycle.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00165/27635/25768.pdf

Particle flux in the Rainbow hydrothermal vent field (Mid-Atlantic Ridge): Dynamics, mineral and biological composition
Provedor de dados: 5
Autores: Khripounoff, Alexis; Vangriesheim, Annick; Crassous, Philippe; Segonzac, Michel; Colaco, Ana; Desbruyeres, Daniel; Barthelemy, Roxane.
In order to provide information about the export and the distribution of hydrothermal particulate material to the surrounding deep ocean, four moorings were deployed in the vicinity of the hydrothermal Rainbow vent field (Mid-Atlantic Ridge, 36 degrees 14'N, 2250 m depth). The first mooring was a sediment trap with a current meter deployed at 2 m from a chimney of the Rainbow vent field and 1.5 m above the bottom (a.b.) for 16 days. It represented the reference for the initial composition of particles produced by the vent. The total mean mass particle flux (6.9 g m(-2) d(-1)) was distinctly higher than the flux measured at the shallower hydrothermal vents on the MAR segment. This particulate flux showed a high temporal variation at the scale of a few days...
Tipo: Text
Palavras-chave: Zooplankton; Biochemistry; Geochemistry; Particle flux; Hydrothermal vent.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/publication-801.pdf

Proposal of a trophic relationship between Chaetognatha and Cnidaria based on Mitochondrial COI sequences
Provedor de dados: 5
Autores: Da Mota Melo, Danielle Caroline; Costa Brandao, Manoela; De Albuquerque, Simone Maria; Neumann-leitão, Sigrid.
This is the first study in Brazil to propose a trophic relationship between Chaetognatha and Cnidaria based on molecular data (COI gene - DNA barcode). Cnidaria COI sequences were detected in tissue samples from two specimens of Flaccisagitta enflata collected in the surroundings of Fernando de Noronha archipelago, Tropical Western Atlantic. The methodology used followed all the requirements for a safe molecular manipulation, making the possibility of contamination unlikely. A search carried in BLAST showed that both sequences provided here presented a combination of highest query coverage and match identity with Nemopilema nomurai (Cnidaria: Scyphozoa), supporting the hypothesis that they belong to a species of jellyfish. Since gelatinous taxa are known...
Tipo: Text
Palavras-chave: DNA barcode; Food item; Oceanic island; Tropical Atlantic; Zooplankton; Cytochrome oxidase subunit I gene.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00628/74057/73490.pdf

Composition en cires, triglycérides, protéines et sucres du mésozooplancton
Provedor de dados: 5
Autores: Alayse-danet, Anne-marie; Daniel, Jean-yves; Le Coz, Jean-rene.
Analyses effectuées sur le zooplancton total des pêches verticales au WP2 et sur des animaux triés à partir des pêches horizontales (Campagne RCA sur les côtes Atlantiques du Portugal). On ne signale pas de différence significative entre la composition biochimique des populations du large et de la côte
Tipo: Text
Palavras-chave: Zooplancton; Milieu marin; Composition chimique; Glucide; Cire animale; Triglycéride; Protéine; Océan Atlantique Nord; Upwelling; Méiofaune; Portugal; France; Zone côtière; Zooplankton; Marine environment; Chemical composition; Carbohydrate; Animal wax; Triglyceride; Proteins; North Atlantic; Upwelling; Meiofauna; Portugal; France; Coastal zone.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/00189/29976/28429.pdf

Surveillance Ecologique du site du "Blayais" - année 2007
Provedor de dados: 5
Autores: Quintin, Jean-yves; Castaing, P; Jouanneau, J. M.; Oggian, G; Chaurial, B; Gournier, N; Sautour, B; Parra, R; Bachelet, G; Leconte, M.
Monitoring n° 30 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2007. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Benthic macrofauna; Zooplankton; Microbiology; Hydrology; Bathymetry; Physico chemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Macrofaune benthique; Zooplancton; Microbiologie; Hydrologie; Bathymétrie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/rapport-5373.pdf

A Global Plankton Diversity Monitoring Program
Provedor de dados: 5
Autores: Batten, Sonia D.; Abu-alhaija, Rana; Chiba, Sanae; Edwards, Martin; Grahams, George; Jyothibabu, R.; Kitchener, John A.; Koubbis, Philippe; Mcquatters-gollop, Abigail; Muxagata, Erik; Ostle, Clare; Richardson, Anthony J.; Robinson, Karen, V; Takahashi, Kunio T.; Verheye, Hans M.; Wilson, Willie.
Plankton are the base of marine food webs, essential to sustaining fisheries and other marine life. Continuous Plankton Recorders (CPRs) have sampled plankton for decades in both hemispheres and several regional seas. CPR research has been integral to advancing understanding of plankton dynamics and informing policy and management decisions. We describe how the CPR can contribute to global plankton diversity monitoring, being cost-effective over large scales and providing taxonomically resolved data. At OceanObs09 an integrated network of regional CPR surveys was envisaged and in 2011 the existing surveys formed the Global Alliance of CPR Surveys (GACS). GAGS first focused on strengthening the dataset by identifying and documenting CPR best practices,...
Tipo: Text
Palavras-chave: Continuous Plankton Recorder; Zooplankton; Phytoplankton; Global monitoring; Biodiversity; Ocean observing; Essential ocean variables.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00689/80060/83064.pdf

Variations of zooplankton in the frontal area of the Alboran sea (Mediterranean sea) in winter 1997
Provedor de dados: 5
Autores: Youssara, F; Gaudy, R.
Zooplankton from the upper 200 m of the Almeria-Oran frontal region, (east of the Alboran sea, western Mediterranean) was sampled during winter 1997, using two nets equipped with 200 and 80 mum mesh. Eight sites representative of the different hydrodynamic structures (Mediterranean water, geostrophic Atlantic jet, associated anticyclonic gyre) were investigated over 2 d, using two day- and two night-samples per site. Zooplankton biomass was correlated to chlorophyll abundance, with lowest values in the oligotrophic Mediterranean water and highest in Atlantic water. The high biomass resulted from the enhancement of the secondary production, as indicated by the greater proportion of nauplii and the increase of zooplankton metabolism and feeding. Total...
Tipo: Text
Palavras-chave: Mer d’Alboran; Distribution; Front; Zooplancton; Alboran sea; Distribution; Front; Zooplankton.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00322/43348/42878.pdf

Surveillance écologique du site du Blayais - année 2012
Provedor de dados: 5
Autores: Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Hervé; Schmidt, Sabine; Mallet, Céline; Roux Ducept, Alexandra; Sautour, Benoît; Parra, René; Dindinaud, François; Bachelet, Guy; Leconte, Michel.
Monitoring n° 35 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2012. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text
Palavras-chave: Centrale nucléaire; Estuaire de la Gironde; Surveillance; Pelagos; Physico chimie; Bathymétrie; Hydrologie; Microbiologie; Zooplancton; Macrofaune benthique; Nuclear power plant; Gironde estuary; Monitoring; Pelagos; Physico chemistry; Bathymetry; Hydrology; Microbiology; Zooplankton; Benthic macrofauna.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00141/25181/23287.pdf

Small-scale variability of zooplankton pyruvate kinase activity in the Gironde Estuary plume (Atlantic French Coast): A case study under unusually low freshwater discharge
Provedor de dados: 5
Autores: Bergeron, Jean-pierre.
Pyruvate kinase (PK) activity measurements are used to assess the role of carbohydrates in global feeding of mesozooplankton communities inhabiting an estuary plume. As a consequence of a remarkably low freshwater discharge rate, the sea surface layers of the area under estuarine influence showed a very moderate salinity fall and a nearly total depletion in nitrates, whereas higher levels of these nutrients were found in deeper, more saline, layers. Small-scale PK activity variations in mesozooplankton appear to be closely correlated to nitrate integration values within the water column. The results were analysed in comparison with literature reports. The study produced a coherent overall interpretation, which strongly supports the reliability of this new...
Tipo: Text
Palavras-chave: Gironde Estuary; Bay of Biscay; Pyruvate kinase; Pyruvate kinase; Carbohydrates; Zooplankton; Phytoplankton; Chlorophyll; Inorganic nutrients.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1745.pdf

Ecotron - Embiez 7 - Evolution qualitative et quantitative du zooplancton dans les bassins de culture
Provedor de dados: 5
Autores: Gaudy, R.
The qualitative and quantitative evolution of a zooplanktonic population growing in a concrete tank after enrichment and production of a phytoplanktonic bloom has been followed during a time exceeding six weeks. After an initial unsteady period and a temporary peak of rotiferas, a progressive increase of organism abundance was observed, with a corresponding re­duction of their specific diversity. During the last phase of the experiment, the zooplankton community was qualitatively similar with the populations described in harbour waters or other semi-closed or closed marine spaces characterized by eutrophy and pollution. It was chiefly composed of copepods from Acartia, Tisbe and Oithona generas. The numerical density of organisms was,to a great...
Tipo: Text
Palavras-chave: Zooplancton; Culture; Physionomie des populations; Zooplankton; Culture; Population physiognomy.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00305/41671/40880.pdf

Evolution de la biomasse et de la physiologie du zooplancton sur la côte nord de Bretagne en relation avec l'échouage de l'Amoco Cadiz : résultats préliminaires pour la période du 16 mars au 20 mai 1978
Provedor de dados: 5
Autores: Samain, Jean-francois; Le Fevre, J.; Moal, J.; Daniel, J.y.; Boucher, Jean.
First results about distribution and changes of biomass (dry weight and total soluble proteins), physiology (amylase, trypsin) and faunistic composition of zooplankton are reported for the two months period following the spill of AMOCO CADIZ on the Britany Northern coast. A shortage of biomass in the aber area is attributed to hydrocarbons. The low level of the mean value of biomasse on the North coasts, and the pecularities of estuarine station of the Lannion bay and of Trieux area are reported and discussed.
Tipo: Text
Palavras-chave: Amoco Cadiz; Zooplancton; Biomasse; Physiologie; Marée noire; Amoco Cadiz; Zooplankton; Biomass; Physiology; Spill.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41728/40939.pdf

210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea)
Provedor de dados: 5
Autores: Strady, Emilie; Harmelin-vivien, Mireille; Chiffoleau, Jean-francois; Veron, Alain; Tronczynski, Jacek; Radakovitch, Olivier.
The transfer of 210Po and 210Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210Po and 210Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210Po, 210Pb activity concentrations and 210Po/210Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is...
Tipo: Text
Palavras-chave: Po-210; Pb-210; Phytoplankton; Zooplankton; Pelagic fishes; Mediterranean Sea.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00255/36609/35264.pdf

Environmental control of mesozooplankton community structure in the Seine estuary (English Channel)
Provedor de dados: 5
Autores: Mouny, P; Dauvin, Jc.
This paper is the first to describe the spatio-temporal changes of mesozooplankton in the Seine estuary. Monthly samples were collected along the estuary in 1996 in order to analyse the seasonal changes of the mesozooplankton community and to identify the major environmental parameters that may influence the spatial distribution of zooplankton in this megatidal estuary. Statistical analysis (canonical correspondence analysis) showed that salinity was the main factor correlated with the longitudinal distribution of zooplankton. Marine species (Temora longicornis, barnacle larvae...) were located in the outer part of the estuary, while more oligohaline species (Eurytemora affinis) were recorded in the inner part of the estuary. A mixed zone was characterised...
Tipo: Text
Palavras-chave: Zooplancton; Eurytemora affinis; Cycle annuel; Facteurs environnementaux; Estuaire de la Seine; Zooplankton; Eurytemora affinis; Annual cycle; Environmental parameters; Seine estuary.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43325/42929.pdf

First record of a Marteilia parasite (Paramyxea) in zooplankton populations from a natural estuarine environment
Provedor de dados: 5
Autores: Carrasco, Noelia; Lopez, Immaculada; Alcaraz, M; Furones, M. Dolores; Berthe, Franck; Arzul, Isabelle.
The life cycle of the species forming the genus Marteilia (Phylum Paramyxea), which are marine protozoan parasites of molluscs, is still poorly known, although there is evidence of the need for intermediate hosts. To date, only the calanoid copepod Acartia (Paracartia) grani has been demonstrated to be involved in the life cycle of the parasite infecting flat oysters growing in ponds with a low biodiversity. However, no complex natural environments, such as bays or estuaries, have been studied for a similar purpose. Therefore, a survey for the presence of the protozoan Marteilia was conducted by PCR on the zooplankton community of a natural ecosystem, the Alfacs and Fangar bays in the Delta de l'Ebre (NW Mediterranean). Identification of zooplankton...
Tipo: Text
Palavras-chave: Zooplankton; Harpaticoida sp.; Oithona sp.; Mollusc parasite; Life cycle; Marteilia.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3050.pdf

The ZooCAM, a new in-flow imaging system for fast onboard counting, sizing and classification of fish eggs and metazooplankton
Provedor de dados: 5
Autores: Colas, Florent; Tardivel, Morgan; Perchoc, Jonathan; Lunven, Michel; Forest, Bertrand; Guyader, Gerard; Danielou, Marie-madeleine; Le Mestre, Sophie; Bourriau, Paul; Antajan, Elvire; Sourisseau, Marc; Huret, Martin; Petitgas, Pierre; Romagnan, Jean-baptiste.
In this paper we present the ZooCAM, a system designed to digitize and analyse on board large volume samples of preserved and living metazooplankton (i.e. multicellular zooplankton) and fish eggs &gt; 300 µm ESD. The ZooCAM has been specifically designed to overcome the difficulties to analyse zooplankton and fish eggs in the framework of the PELGAS survey, and provide high frequency data. The ZooCAM fish eggs counts were comparable to those done with a dissecting microscope. The ZooCAM enabled the accurate prediction and fast on board validation of staged anchovy and sardine eggs in almost real time after collection. A comparison with the ZooScan, on a more complex zooplanktonic community, provided encouraging results on the agreement between the 2...
Tipo: Text
Palavras-chave: ZooCAM; In-flow imaging; Fish eggs; Zooplankton; Ecosystemic survey.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00407/51833/52432.pdf

Connectivity patterns of anchovy larvae in the Bay of Biscay from a coupled transport-bioenergetic model forced by size-structured zooplankton
Provedor de dados: 5
Autores: Huret, Martin; Vandromme, Pieter; Petitgas, Pierre; Pecquerie, Laure.
Connectivity during early life stages of pelagic fish, defined here by survival probability between spawning and early juvenile habitats, depends on a combination of sufficient food availability and low predator encounter along drift trajectories. For anchovy in the Bay of Biscay, larval transport experiments throughout the spawning season suggest accumulation of early juveniles in the offshore area of the southern Bay, as well as retention over the mid-shelf at mid-latitude. However, late summer-early autumn surveys suggest presence of juveniles only in the former region. From this observation, we set up a bioenergetic individual based model to test for the effect of food availability on survival patterns. The model couples a Lagrangian transport module...
Tipo: Text
Palavras-chave: Connectivity; Larval IBM; Bioenergetics; Zooplankton; Bay of Biscay; European anchovy.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00105/21655/19237.pdf

Variations of zooplankton metabolism and feeding in the frontal area of the Alboran Sea (western Mediterranean) in winter
Provedor de dados: 5
Autores: Gaudy, R; Youssara, F.
Respiration, excretion (NH4 and PO4) and feeding of zooplankton from the upper 200 m of the Almeria-Oran frontal region (western Mediterranean), were studied during winter 1997. Eight sites belonging to the three main hydrodynamic structures of the area (Mediterranean water, geostrophic Atlantic jet and associated anticyclonic gyre) were considered. Lowest values of respiration, PO4 excretion, O/P atomic ratio and particle ingestion were found in Mediterranean waters. At the frontal limit, respiration and ammonium excretion were enhanced compared to the adjacent structures (Mediterranean water and Atlantic jet). In the gyre water, lowest O/N and highest N/P values were observed and maximum faecal pellet production and reproduction activity (inferred from...
Tipo: Text
Palavras-chave: Mer d'Alboran; Front; Zooplancton; Métabolisme; Nutrition; Alboran sea; Front; Zooplankton; Metabolism; Feeding.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00322/43275/43006.pdf

PCB concentrations in plankton size classes, a temporal study in Marseille Bay, Western Mediterranean Sea
Provedor de dados: 5
Autores: Tiano, Marion; Tronczynski, Jacek; Harmelin-vivien, Mireille; Tixier, Celine; Carlotti, Francois.
PCB levels in plankton were investigated in the Bay of Marseille, Western Mediterranean Sea, between September 2010 and October 2011. Concentrations of PCB congeners (CB 18, CB 52, CB 101, CB 118, CB 138, CB 153, CB 180) were determined in three plankton size-classes (60–200, 200–500 and 500–1000 μm) together with different parameters: chlorophyll content, plankton dry-weight biomass, carbon and nitrogen stable isotope ratios and plankton-community structure. The ∑PCB7 concentrations ranged between 14.2 and 88.1 ng g−1 d.w., for all size classes and all sampling periods. The results do not show the biomass dilution effect and indicate moderate but significant biomagnification with plankton trophic position estimated by δ15N signatures. Equilibrium with...
Tipo: Text
Palavras-chave: PCBs; Phytoplankton; Zooplankton; Bioaccumulation; Coastal; Bay of Marseille.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00218/32881/31371.pdf

Modelling ecological change over half a century in a subtropical estuary: impacts of climate change, land-use, urbanization and freshwater extraction
Provedor de dados: 5
Autores: Condie, Scott A.; Hayes, Donna; Fulton, Elizabeth A.; Savina, Marie.
The Clarence River Estuary is the largest estuary in southeast Australia, with an extensive floodplain encompassing multiple river channels and a large coastal lagoon. It is the focus of major commercial and recreational fisheries and there is pressure to divert its freshwater inputs for agricultural and domestic uses. We used a spatial biogeochemical model to simulate the variability and evolution of this system on timescales from days to decades over the past half century. Like most tropical and subtropical estuaries, the Clarence River Estuary is strongly influenced by river discharge, sediment and nutrient loads. Given the high nutrient loads arriving from the upper catchment, plankton biomasses in the model were typically limited by flushing through...
Tipo: Text
Palavras-chave: Coastal lagoon; Flushing; Land-use; Climate impacts; Nutrients; Phytoplankton; Zooplankton.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00175/28673/27113.pdf

Seasonal and interannual variability of zooplankton community in waters off Mallorca island (Balearic Sea, Western Mediterranean): 1994-1999
Provedor de dados: 5
Autores: Fernandez De Puelles, Ml; Pinot, Jm; Valencia, J.
During 1994-1999, the mesozooplankton community was sampled monthly in the upper sea layer (up to 100 m) along a cross-shelf transect of three stations in waters off Mallorca island. Copepods formed the most abundant group (54%) followed by appendicularians (17%), cladocerans and meroplankton larvae (13%). The abundance of all these groups decreased in the offshore direction but it was not the case for other zooplankton groups. A clear seasonal cycle was evident consisting of a general decrease of the abundance from the beginning to the end of the year. In addition to the general increase during late winter and spring, an absolute maximum was detected in May, particularly important at the neritic station and a relative maximum in March and October. During...
Tipo: Text
Palavras-chave: Mer des Baléares; Copépodes; Hydrolique; Zooplancton; Méditerranée occidentale; Balearic Sea; Copepods; Hydrography; Zooplankton; Western Mediterranean.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00321/43257/42988.pdf

Small pelagic fish dynamics: a review of mechanisms in the Gulf of Lions
Provedor de dados: 5
Autores: Saraux, Claire; Van Beveren, Elisabeth; Brosset, Pablo; Queiros, Quentin; Bourdeix, Jean-herve; Dutto, Gilbert; Gasset, Eric; Jac, Cyrielle; Bonhommeau, Sylvain; Fromentin, Jean-marc.
Around 2008, an ecosystem shift occurred in the Gulf of Lions, highlighted by considerable changes in biomass and fish mean weight of its two main small pelagic fish stocks (European anchovy, Engraulis encrasicolus; European sardine, Sardina pilchardus). Surprisingly these changes did not appear to be mediated by a decrease in fish recruitment rates (which remained high) or by a high fishing pressure (exploitation rates being extremely low). Here, we review the current knowledge on the population's dynamics and its potential causes. We used an integrative ecosystem approach exploring alternative hypotheses, ranging from bottom-up to top-down control, not forgetting epizootic diseases. First, the study of multiple population characteristics highlighted a...
Tipo: Text
Palavras-chave: Population dynamics; Top-down; Disease; Zooplankton; Exploited species; Bottom-up.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00427/53861/54903.pdf

Plankton communities of the South Atlantic anticyclonic gyre
Provedor de dados: 5
Autores: Piontkovski, Sa; Landry, Mr; Finenko, Zz; Kovalev, Av; Williams, R; Gallienne, Cp; Mishonov, Av; Skryabin, Va; Tokarev, Yn; Nikolsy, Vn.
Data collected during cruises of the Former Soviet Union (in 1963-1989) and the British Atlantic meridional transect program (in 1995-1999) were used to analyse macroscale patterns in phyto- and zooplankton biomass, size structure, species diversity, chlorophyll a, and plankton bioluminescence in the macroscale anticyclonic gyre of the South Atlantic Ocean. The spatial pattern of bioluminescence intensity was in good agreement with that of remotely sensed (CZCS) chlorophyll a, phosphate, salinity, and copepod species diversity index distributions especially in terms of geographic inclinations of the isolines, both associated with the north-westward pattern off the South equatorial current. Among the 416 copepod species recorded in samples, 51 species were...
Tipo: Text
Palavras-chave: Zooplancton; Chlorophylle; Bioluminescence; Altantique Sud; Zooplankton; Chlorophyll; Bioluminescence; South Atlantic Ocean.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00322/43271/43002.pdf

La conchyliculture française - 1° Partie : Le milieu naturel et ses variations
Provedor de dados: 5
Autores: Marteil, Louis.
Table of Contents  The Natural Environment      Production centres           Oyster farming centres           Mussel farming centres  Chapter I. - The Physicochemical Environment      I. Sea Water           a) Transparency, turbidity            b) Temperature           c) Salinity           d) Dissolved gases           e) Substances dissolved in the water           f) Water movements           g) Hydrology of the main shellfish farming centres      II. Soils           a) Soil properties           b) Mechanical amendment of soils, its effects           c) Fertilisation of soils in shellfish farming           d) Changes in soils due to farming      Bibliography  Chapter II. - The Natural Environment      Phytoplankton      Zooplankton           Basic biology...
Tipo: Text
Palavras-chave: Zooplankton; Phytoplankton; Water pollution; Sea water; Natural environment; Shellfish culture.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/1974/publication-1776.pdf

Surveillance Ecologique du site du "Blayais" - année 2006
Provedor de dados: 5
Autores: Quintin, Jean-yves; Castaing, Patrice; Jouanneau, Jean-marie; Oggian, Georges; Chaurial, Bernard; Gournier, Nathalie; Sautour, Benoît; Parra, René; Bachelet, Guy; Leconte, Michel.
Monitoring n° 29 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2006. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported. [see summary p. 7 - 10 (in French)]
Tipo: Text
Palavras-chave: Benthic macrofauna; Zooplankton; Microbiology; Hydrology; Bathymetry; Physico chemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Macrofaune benthique; Zooplancton; Microbiologie; Hydrologie; Bathymétrie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/rapport-2572.pdf

Structure et importance des peuplements zooplanctoniques dans la baie d'Arcachon : milieux ouverts et lagunes aménagées de Certes
Provedor de dados: 5
Autores: Castel, J.; Courties, C.
Specific composition and distribution of the zooplankton in Arcachon Bay varie along a salinity gradient from oceanic to neritic and lagoonal condi­tions. A peak of density and biomass is recorded in spring due to an increase of holoplanktonic species as well as larvae of benthic Invertebrates. A second maxi­mum of abundance is observed in autumn. The community structure of copepods and polychaets larvae is considered in detail. The diversity (Shannon index, Sanders's rarefaction) decreases from the mouth of the Bay to the inner neritic water mass. Demographic parameters indi­cate that the populations structure is affected by the salinity gradient. Biomass increases significantly from the oceanic water to the inner neritic water mass while the species...
Tipo: Text
Palavras-chave: Zooplancton; Copépodes; Polychètes; Diversité; Distribution différentielle; Bassin d'Arcachon; Zooplankton; Copepods; Polychaets; Diversity; Differential distribution; Arcachon Bay.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41680/40889.pdf

Diet, feeding behaviour and trophic activity of the anchovy (Engraulis encrasicolus L.) in the Gulf of Lions (Mediterranean Sea)
Provedor de dados: 5
Autores: Plounevez, Serge; Champalbert, Gisèle.
Feeding behaviour of adult European anchovy (Engraulis encrasicolus) was studied in the Gulf of Lions (northwestern Mediterranean Sea) in relation to major abiotic and biotic factors. Observations were made during the main spawning period (summer) for two years, data were collected through hydrological pro-tiling, zooplankton hauls and fish trawling performed in areas of high anchovy density. Temperature, salinity and zooplankton biomass were stratified in the study areas, with cladocerans numerous above the thermocline whereas copepods were dominant below. Engraulis encrasicolus was strictly zooplanctivorous during the main spawning season with copepod and crustacean larvae dominating in stomach contents. Anchovy exhibited high trophic activity during the...
Tipo: Text
Palavras-chave: Anchois; Alimentation; Zooplancton; Reproduction; Méditerranée; Anchovy; Feeding; Zooplankton; Spawning; Mediterranean Sea.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00301/41263/40455.pdf

High evolutionary potential of marine zooplankton
Provedor de dados: 16
Autores: Peijnenburg, K.T.C.A.; Goetze, E.
Open ocean zooplankton often have been viewed as slowly evolving species that have limited capacity to respond adaptively to changing ocean conditions. Hence, attention has focused on the ecological responses of zooplankton to current global change, including range shifts and changing phenology. Here, we argue that zooplankton also are well poised for evolutionary responses to global change. We present theoretical arguments that suggest plankton species may respond rapidly to selection on mildly beneficial mutations due to exceptionally large population size, and consider the circumstantial evidence that supports our inference that selection may be particularly important for these species. We also review all primary population genetic studies of open ocean...
Tipo: Article / Letter to the editor
Palavras-chave: Adaptation; Climate change; Marine; Oceanic; Selection; Zooplankton; 42.72; 42.94.
Ano: 2013
URL: http://www.repository.naturalis.nl/record/470572

Larvas de peces clupeiformes y microzooplankton en la estación fija "La Libertad" desde noviembre de 1999 a julio del 2000
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
Uno de los principales objetivos es la evaluación de los impactos que los eventos de El Niño tienen en las poblaciones del ictioplancton, con especial referencia a huevos y larvas de especies de interés comercial. Para el efecto se utilizan también, a más de los datos oceanográficos, especies de foraminíferos planctónicos como indicadores del estado del ecosistema. En el presente documento se detalla la distribución de larvas de Sardinops sagax (sardina), Ophistonema sp., Cetengraulis mysticetus (chuhueco), Anchoa y Engraulis ringens (anchoveta) durante el primer semestre del año 2000.
Tipo: Journal Contribution
Palavras-chave: Ichthyoplankton; Biological production; Biomass; Zooplankton; Distribution; Fish eggs; Fish larvae; El Nino phenomena; Environmental impact; Fixed stations; Biological production; Biomass; Zooplankton; Distribution; Environmental impact; Fish larvae.
Ano: 2004
URL: http://hdl.handle.net/1834/2284

Distribución, abundancia y estructura poblacional de los eufáusidos en el Estrecho Bransfield (Antártida), durante el verano austral 1998
Provedor de dados: 20
Autores: Castañeda, P.
Durante la VII Expedición Ecuatoriana a la Antártida, en el verano austral 1998, los días comprendidos entre el 24 al 27 de enero de 1998, se realizaron 14 arrastres planctónicos oblicuos en el Estrecho Bransfield. Las colectas fueron realizadas con una red bongo de 0.6 m de diámetro y 600μ de abertura de malla, efectuados a partir de los 600 metros de profundidad. De 1228 especímenes estimados, a 198 de estos se determinó la especie, sexo y longitud estándar. Se identificaron 2 géneros y 3 especies: Thysanoessa sp., (665 ind/1000 m3), T. macrura (296 ind/1000 m3) y Euphausia superba (267 ind/1000 m3). Se destaca la predominancia numérica de Thysanoessa sp., sobre E. superba. En el ámbito general los individuos adultos dominaron la mayoría de las capturas,...
Tipo: Journal Contribution
Palavras-chave: Distribution records; Abundance; Population structure; Zooplankton; Polar waters; Population structure; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1998
URL: http://hdl.handle.net/1834/3843

Condiciones del plancton en una estación fija: Puerto El Morro-Playas, Golfo de Guayaquil, 2000-2002
Provedor de dados: 20
Autores: Bonilla Coello, M.A.; Plúas, F.; Camposano, J.
En este estudio se examina la abundancia estructura poblacional y variación temporal del plancton, especialmente de copépodos en el Golfo de Guayaquil, a través de tres años de estudio, en condición no El Niño.
Tipo: Journal Contribution
Palavras-chave: Plankton; Phytoplankton; Abundance; Distribution; Zooplankton; Marine crustaceans; Fixed stations; Population structure; Diatoms; Fish eggs; Fish larvae; Population structure; Plankton; Phytoplankton; Distribution; Zooplankton; Diatoms; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 2002
URL: http://hdl.handle.net/1834/2315

Biophysical isopycnic-coordinate modelling of plankton dynamics in the Arabian Sea
Provedor de dados: 20
Autores: Idrisi, N.; Romanou, A.; Olascoaga, M.J.
A Nutrients-Phytoplankton-Zooplankton-Detritus (NPZD) ecosystem model is coupled to the Miami Isopycnic-Coordinate Ocean Model (MICOM) to study planktondynamics in the Arabian Sea. Experiments oriented to testing the NPZD-MICOM coupled model sensitivity to variations in several parameters are performed. Particular attention is paid to the rates of detritus sinking and maximum phytoplankton growth rate. The coarse features of the blooms are captured by all the experiments considered, and agree with earlier models for the biological activity of the region. Intensity, duration, and peaks of the blooms are found to be quite sensitive to the parameter choices. The existence of an offshore deep chlorophyll maximum in the model is found to be closely related to...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Detritus; Biophysics; Modelling; Arabian Sea; Http://aims.fao.org/aos/agrovoc/c_565.
Ano: 2005
URL: http://hdl.handle.net/1834/271

Composición y distribución de la biomasa del plancton en el frente ecuatorial
Provedor de dados: 20
Autores: Jiménez, R.; Bonilla, D.
Este trabajo presenta los resultados de la distribución de la biomasa y composición del fitoplancton y zooplancton en el frente ecuatorial, cuya presencia caracteriza las condiciones consideradas como "normal" para el sistema de circulación oceánica del Pacífico Tropical.
Tipo: Journal Contribution
Palavras-chave: Composition; Distribution; Biomass; Cruises; Phytoplankton; Zooplankton; Distribution; Biomass; Phytoplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1980
URL: http://hdl.handle.net/1834/2090

Diversidad del plancton en el estuario interior de Puerto Bolívar, Ecuador durante julio de 2002
Provedor de dados: 20
Autores: Tapia, M.E.; Naranjo, Ch.
Los objetivos del presente estudio son:- Establecer el estado actual del plancton en el estero Santa Rosa, estero Jambelí y río Jubones durante las fases de flujo y reflujo. - Determinar la productividad, dominación y diversidad del plancton presentes en el área de estudio.
Tipo: Journal Contribution
Palavras-chave: Species diversity; Biological production; Plankton; Phytoplankton; Zooplankton; Biomass; Biological production; Plankton; Phytoplankton; Zooplankton; Biomass; Species diversity; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2004
URL: http://hdl.handle.net/1834/2293

Variabilidad del plancton en estaciones fijas frente a la costa ecuatoriana durante el 2008
Provedor de dados: 20
Autores: Prado, M.; Cajas, J.
Se realizó el análisis de plancton  en tres estaciones fijas ubicadas en el perfil de la costa ecuatoriana: Esmeraldas, Punta Galera y Puerto López entre abril y diciembre de 2008. Las muestras fueron obtenidas mensualmente, identificándose un total de 99 especies fitoplanctónicas y 122 zooplanctónicas. El análisis cualitativo y cuantitativo de la variación mensual del plancton fue comparado entre los años 2006, 2007 y 2008, determinándose que el año 2008 fue el de mayor productividad y que Esmeraldas registró la mayor productividad fitoplanctónica y la menor densidad zooplanctónica; tendencia contraria a Punta Galera y Puerto López, estaciones donde se registraron densidades fitoplanctónicas menores y altas concentraciones de zooplancton debido a la...
Tipo: Journal Contribution
Palavras-chave: Fixed stations; Oceanographic data; Phytoplankton; Zooplankton; Plankton surveys.
Ano: 2009
URL: http://hdl.handle.net/1834/4787

Listado taxonómico de copépodos (Arthropoda: Crustacea) del Mar Caribe colombiano
Provedor de dados: 20
Autores: Medellín-Mora, J.; Navas-S., G.R.
En  el  Caribe  colombiano  existen  pocos  trabajos  sobre  zooplancton  que  han  estudiado  su composición  específica  y  la  información  existente  está  en  gran  parte  consignada  en  literatura  gris  y muy  dispersa.  Estudios  realizados  en  otras  áreas  del  Caribe  muestran  una  alta  riqueza  de  copépodos registrando  aproximadamente  500  especies.  En  este  trabajo  se  presenta  el  listado  taxonómico  de  217 especies de copépodos planctónicos pertenecientes a los órdenes Calanoida, Cyclopoida, Harpacticoida, Poecillostomatoida,  Mormonilloida  y  Siphonostomatoida,  registradas  para  el  mar  Caribe  colombiano desde 1970.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2010
URL: http://hdl.handle.net/1834/4019

Ecología trófica de peces demersales en el Golfo San Jorge
Provedor de dados: 20
Autores: Sánchez, M.F.; Prenski, L.B.
This work is a first approach in the study of the trophic ecology from a multispecific fishery in San Jorge Gulf (45°-47°S), Argentina. Stomach contents from 28 demersal fish species were analyzed. Taxonomic and trophic spectrum were obtained. Using weight percentage of each prey, trophic spectrum variations for size classes were analized for each of the 12 considered "dominant" species. Overlaping in the diet among these predators was estimate using cluster analysis. There was an interespecific diet overlap between juveniles belonging to demersal-benthic fish species, because all of them prey upon Stomatopoda and Munida. Adults from those species and hake prefered young and adult hake as preys, while Macruronus magellanicus and juvelines Merluccius hubbsi...
Tipo: Journal Contribution
Palavras-chave: Marine fish; Trophic relationships; Feeding; Zooplankton; Feeding; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1996
URL: http://hdl.handle.net/1834/1963

El ecosistema de la plataforma patagónica austral, marzo-abril 2000. Composición, abundancia y distribución del zooplancton.
Provedor de dados: 20
Autores: Sabatini, M.
The abundance, distribution and structure of the zooplankton community in southern Patagonia (SW Atlantic Ocean) were studied during late summer (March-April 2000) from samples obtained with Nackthai (390 ~km) and Multinet (150 ~km) samplers. Total concentrations of zooplankton biomass, integrated in the water column, ranged between 1.0 and 14.5 g m-2 (dry weight) and reached the highest values in the mid and outer shelf off Bahía Grande (Santa Cruz Prov., Argentina) (51~'S). The &lt; 5 mm size fraction, composed mainly of copepods represented, on average, 45% of the total; amphipods and euphausiids accounted for 20% and 31%, respectively. Amphipods were, almost exclusively, Themisto gaudichaudii and euphausiids most abundant species Euphausia lucens and...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Biomass; Population structure; Geographical distribution; Continental shelves; Zooplankton; Biomass; Population structure; Geographical distribution; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2008
URL: http://hdl.handle.net/1834/3142

Plancton alrededor de las Islas Galápagos durante el crucero oceanográfico efectuado en mayo de 2004
Provedor de dados: 20
Autores: Tapia, M.E.; Naranjo, Ch.
El presente trabajo comprende la composición y distribución del plancton en las Islas Galápagos. Para el efecto se establecieron 13 estaciones ubicadas en las secciones 92° - 90° y 89° W, realizadas en mayo del 2004.
Tipo: Journal Contribution
Palavras-chave: Plankton; Community composition; Distribution; Phytoplankton; Zooplankton; Diatoms; Biomass; Cruises; Biomass; Plankton; Distribution; Phytoplankton; Zooplankton; Diatoms; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2006
URL: http://hdl.handle.net/1834/2331

Distribución y abundancia del plancton estuarino en el Canal El Morro, Posorja (junio 2006)
Provedor de dados: 20
Autores: Torres, G.; Andrade, C.
El proyecto de "Gestión Ambiental de la Armada" en el área estuarina adyacente al reten Naval de Posorja, tuvo como objetivo realizar un muestreo de plancton y sus condiciones ambientales actuales, a fin de conservar los ecosistemas marino-costeros y su diversidad biológica para el beneficio de la población local, la ciencia y educación establecido en la estrategia de desarrollo sustentable adaptadas al Cambio Climático (Gaibor, et al., 2000).
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Abundance; Estuaries; Geographical distribution; Phytoplankton; Zooplankton; Estuaries; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2007
URL: http://hdl.handle.net/1834/2361

Variación mensual y mareal del zooplancton en una estación fija del estero del Muerto, Golfo de Guayaquil
Provedor de dados: 20
Autores: Arcos, F.; Martínez, L.
Durante los meses de Marzo de 1983 a Febrero de 1984, se llevaron a cabo muestreos de 24 horas consecutivas en las fases llenas lunares en una estación fija en la región interior del Golfo de Guayaquil. Con esta información se han determinado variaciones mensuales y mareales del zooplancton, así como de otros parámetros ambientales, encontrándose una estrecha relación entre la abundancia de organismos y los valores de salinidad. La mayor biomasa planctónica estuvo asociada con los meses secos de alta salinidad. Analizando la variación mareal, se ha determinado que durante las mareas, existe aporte de material nutritivo desde el interior del estuario hacia la región exterior.
Tipo: Journal Contribution
Palavras-chave: Seasonal variations; Zooplankton; Biomass; Zooplankton; Biomass; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 1986
URL: http://hdl.handle.net/1834/2142

Variación mensual del plancton en una estación fija La Libertad (Salinas), Ecuador.  Período: 1988 - 1989
Provedor de dados: 20
Autores: Bonilla, M.A.
El presente trabajo es el resultado del estudio cuali-cuantitativo de análisis de plancton colectado mediante muestreos mensuales en aguas superficiales costeras en una estación fija en La Libertad (Salinas) entre diciembre 1988 y diciembre 1989. Se dan a conocer 29 grupos de organismos del zooplancton, determinándose que los dominantes en orden decreciente fueron: larvas de eufáusidos, quetognatos, apendicularios, larvas de decápodos, huevos de peces, foraminíferos, cladóceros, huevos de decápodos y los más frecuentes: copépodos, apendicularios, quetognatos, larvas de decápodos y huevos de peces. Se presentan las especies más abundantes y dominantes de copépodos en orden decreciente: Acartia levequei, Centropages furcatus y Temora discaudata. Se determina...
Tipo: Journal Contribution
Palavras-chave: Plankton; Zooplankton; Seasonal distribution; Geological distribution; Salinity; Temperature; Plankton; Zooplankton; Salinity; Temperature; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_7657.
Ano: 1990
URL: http://hdl.handle.net/1834/2165

Sifonóforos (Cnidaria,Hydrozoa) de aguas superficiales alrededor de las Isla Santa Clara, durante septiembre  y noviembre del 2007
Provedor de dados: 20
Autores: Andrade Ruíz, C.E.
Se analizaron los sifonóforos colectados en las muestras superficiales de zooplancton alrededor de la Isla Santa Clara duarnte septiembre y noviembre del 2007, identificándose 15 especies de sifonóforos del suborden Calycophorae y una especie del suborden Cystonectae, todos ellos registrados por primera vez para aguas tropicales alrededor de la Isla Santa Clara. Las especies más abundantes en la fase de flujo fueron Muggiacea atlantica (15.3%), Chelophyes appendiculata (13.3%) y en reflujo fueron Chelophyes appendiculata con 22.6%, Lensia hotspur con 15.5%, Diphyes dispar (11%) y Lensia multicristata con 10.9%. Las especies restantes fueron escasas y su abundancia relativa fue inferior al 8%.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Abundance.
Ano: 2012
URL: http://hdl.handle.net/1834/4709

Prevalence of Marine Zooplankton around Port Sudan
Provedor de dados: 20
Autores: Ginawi, Amjed Ginawi Ahmed.
Marine zooplankton and some physical parameters (water temperature and transparency) and chemical parameters (salinity, pH and phosphate, nitrate, nitrite and oxygen) were studied from November 2009 to October 2010, at six stations around Port Sudan. The stations were: Tires Factory (station 1), Fish market (Station 2), Open Sea (Station 3), the harbour entrance (Station 4), the Faculty of Marine Sciences and Fisheries (Station 5) and Sea Land (Station 6). Marine zooplankton was sampled, preserved, stained and identified according to the standard methods. The physical and chemical parameters were determined following standard methods. Fifteen groups of zooplankton (calanoida copepods, cyclopoida copepods, branchyuran zoea, fish eggs, cladocerans,...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton.
Ano: 2010
URL: http://hdl.handle.net/1834/5082

Distribución del ictioplancton y zooplancton en el Golfo de Guayaquil y costa central de Manabí durante noviembre de 1995
Provedor de dados: 20
Autores: Ortega, D.; Elías, E.
Are presented the distribution of ichthyoplankton and zooplankton between the 2th and 6th of november 1995 were observed from the central coast of Manabí province and the Gulf of Guayaquil waters, 27 stations were surveyed being carried out oblique haulages with nets type bongo of 500~km, 300~km y 150~km, hasta una profundidad de 200 m; superficial haulage were carried out by using a net of 200~km as well twenty families and eleven gennus of ichthyoplankton were identified. The Engraulidae family was the most representative with 3671 larvas (10 m2)-1 while the Scombridae and Clupeidae families registered 46 and 121 larvas (10 m2)-1 respectively. There were identified larvas of demersal fish with: Sciaenidae, Carangidae, Serranidae and Gerridae. In the...
Tipo: Journal Contribution
Palavras-chave: Ichthyoplankton; Geographical distribution; Zooplankton; Larval development; Geographical distribution; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1996
URL: http://hdl.handle.net/1834/2969

Estudios limnológicos en lagos y lagunas del Parque Nacional Torres del Paine (51°S, Chile)
Provedor de dados: 20
Autores: Soto, Doris; De los Ríos, Patricio.
La Patagonia de Chile posee muchos ecosistemas acuáticos sin contaminación, dentro de estos ecosistemas hay muchos lagos y lagunas prístinos. En este estudio, se analizó información colectada entre los años 1989 y 1990 (sin publicar y sin publicar) sobre lagos y lagunas del Parque Nacional Torres del Paine, un área sin contaminar en el sur de Chile (51° S). Se aplicó un análisis de componentes principales considerando parámetros químicos, riqueza de especies zooplanctónicas y biomasa. Los resultados denotaron que las concentraciones de cationes (Ca, Na y Mg), cloruros, seston y clorofila, junto con biomasa de zooplancton y riqueza de especies zooplanctónicas fueron las principales variables que contribuyeron al modelo obtenido. Según este modelo, se...
Tipo: Journal Contribution
Palavras-chave: Lakes; Ponds; Chlorophylls; Zooplankton; Nutrients; Http://aims.fao.org/aos/agrovoc/c_5274.
Ano: 2009
URL: http://hdl.handle.net/1834/4167

Composition, Abundance and Seasonality of Zooplankton in Mida Creek, Kenya
Provedor de dados: 20
Autores: Osore, M.; Mwaluma, J.; Kamau, J.; Wawiye, P.
Samples were collected monthly at four fixed stations in Mida creek from May 1996 to April 1997, in order to determine the species composition, abundance and diversity of phytoplankton and zooplankton collected with 20- and 332-mm mesh size plankton nets respectively. Sampling also included measurement of salinity and temperature. Peaks in phytoplankton abundance occurred in May and January, following the long rains in April–May and the short rains in November–December. Zooplankton densities followed the phytoplankton peaks with the main peak occurring in February after the major phytoplankton bloom. Similarly, smaller peaks occurred in May and March. Copepods dominated the zooplankton forming up to 60% of total species composition. High zooplankton...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Midacreek; Phytoplankton; Abundance; Kenya; Zooplankton.
Ano: 2003
URL: http://hdl.handle.net/1834/949

Producción estacional de Oithona nana (Copepoda: Cyclopoida) en aguas costeras de Argentina
Provedor de dados: 20
Autores: Temperoni, B.
Oithona nana (Copepoda: Cyclopoida)is a widely-distributed neritic species, which often comprises up to 90 percentage of the zooplankton in many coastal areas. This small copepod plays an important role as a dominant prey in the diet of Engraulis anchoita larvae, which is a main component of major ecological relevance in the pelagic food webs of the Argentine Sea (SW Atlantic Ocean). The objective of this study was to estimate, for the first time, the seasonal variation of O. nana secondary production in a temperate region: coastal waters off Buenos Aires province, Argentina, at the EPEA Station (Estación Permanente de Estudios Ambientales, (38°28' S-57°41' W). Zooplankton samples (N=14)were taken by oblique tows of a Minibongo net (mouth diameter: 0.18 m;...
Tipo: Theses and Dissertations
Palavras-chave: Secondary production; Coastal waters; Zooplankton; Seasonal variations; Abundance; Environmental conditions; Zooplankton; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2008
URL: http://hdl.handle.net/1834/3131

Copepod composition, abundance and diversity in Makupa Creek, Mombasa, Kenya
Provedor de dados: 20
Autores: Osore, M.; Fiers, F.; Daro, M.H.
The taxonomic composition, abundance and spatio-temporal distribution of copepods were analysed from monthly zooplankton samples collected in Makupa creek and Mombasa Harbour (Makupa creek was until recently subjected to considerable dumping of domestic and industrial waste). At least 51 copepod species belonging to 38 genera in the families Calanoida (25), Harpacticoida (5), Poecilostomatoida (7) and Cyclopoida (1) were identified. The most common genera were Acartia, Acrocalanus, Corycaeus, Oncaea and Oithona. Copepods bloomed in the wet months of November and April (75 to 158/m3). Abundance was consistently high near the creek mouth and low within the creek enclosure. Copepod diversity (H’) was slightly higher (2.00 to 2.57) during September, November,...
Tipo: Journal Contribution
Palavras-chave: Mombasa; Marine pollution; Zooplankton; Copepod culture; Monsoons.
Ano: 2003
URL: http://hdl.handle.net/1834/1081

Survey of the Demersal Fish Resources of the outer shelf and slope off Ghana
Provedor de dados: 20
This survey focused on the outer shelf and deep water slope off Ghana and the catch-distribution analyses were therefore performed for four depth strata, outer shelf (&lt; 100 m), upper slope (100-300 m) mid slope (300-600 m) and lower slope (&gt;600 m). In the analyses the “Demersal” group includes commercially important families as Sciaenidae, Haemulidae (=Pomadasyidae), Serranidae, Sparidae and Lutjanidae, and especially in deeper waters the Merluccidae, Macrouridae and Moridae. The Pelagic group includes Engraulidae, Clupeidae, Carangidae, Scombridae, Sphyraenidae, Gempylidae and Trichiuridae (the latter family is actually mainly benthopelagic). For the analysis the “other” group includes all species not accounted for in the groups listed.
Tipo: Report
Palavras-chave: Demersal fish; Zooplankton; Distribution; Pelagic fish; Lutjanidae; Macrouridae.
Ano: 2010
URL: http://hdl.handle.net/1834/4996

Análisis de la distribución y abundancia del ictioplancton y zooplancton acompañante en el Golfo San Matías en noviembre de 1992
Provedor de dados: 20
Autores: Mercado, L.; Pose, M.; Tesolin, G.; Villar, C.
Realizado en el INIDEP (Instituto Nacional de Investigación y Desarrrollo Pesquero- Mar del Plata, Argentina)
Tipo: Theses and Dissertations
Palavras-chave: Ichthyoplankton; Zooplankton; Fish larvae; Abundance; Environmental conditions; Zooplankton; Fish larvae; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1993
URL: http://hdl.handle.net/1834/3550

Distribución y composición del macrozooplancton en Bahía Chile y Ensenada Guayaquil, Isla Greenwich-verano austral 1998
Provedor de dados: 20
Autores: Ortega, D.
Durante el verano austral, se efectuó la VII Expedición Antártica Ecuatoriana, a bordo del B/I Orión, perteneciente a la Armada del Ecuador. Entre los meses de enero y febrero de 1998, en la Ensenada Guayaquil y Bahía Chile (Isla Greenwich), se colectaron y analizaron muestras de macrozooplancton obtenidas de arrastres superficales con redes tipo cónica simple de 500μ m, con la finalidad de conocer la distribución y composición del zooplancton. Las salpas fueron los organismos más representativos con el 46%, en segundo lugar estuvieron los copépodos 17% y quetognatos 15%, en la Ensenada Guayaquil donde también se presentó la mayor heterogeneidad zooplanctónica, registrándose la mayor distribución al oeste, próximo a la Isla Dee. En Bahía Chile, la...
Tipo: Journal Contribution
Palavras-chave: Distribution; Composition; Temperature; Salinity; Zooplankton; Distribution; Zooplankton; Temperature; Salinity; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_7657; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 1998
URL: http://hdl.handle.net/1834/3851

Bio-oceanografía en el entorno de la isla de La Plata, durante agosto/2001
Provedor de dados: 20
Autores: Torres, G.; Calderón, T.; Calderón, G.; Franco, V.; Correa, C.
El objetivo de la presente investigación, fue dar un comprensivo entendimiento de las condiciones bio-oceanográficas del fitoplancton-zooplancton-ictioplancton, y las interacciones con el medio circundante (físico, químico), procesos que son complicados cuando involucran aspectos hidrográficos costeros como áreas de afloramiento, áreas de pesca y áreas de soporte alimentario para los diferentes recursos marinos costeros planctónicos-bentónicos y aves-mamíferos marinos.
Tipo: Journal Contribution
Palavras-chave: Marine ecology; Phytoplankton; Zooplankton; Ichthyoplankton; Upwelling; Biological production; Marine resources; Cruises; Oceanic islands; Coastal zone; Marine resources; Phytoplankton; Zooplankton; Biological production; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_28012; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2004
URL: http://hdl.handle.net/1834/2318

Politique de gestion durable des ressources halieutique au Cap-Vert
Provedor de dados: 20
Autores: Ramos, V.
L'archipel du Cap-Vert est localisé entre 14 50° et 17 20° de lattitude nord et entre 22 40° 25 30° de longitude Ouest environ 333 ,3 miles maritimes de la côte ouest Africaine environ 600 km du Sénégal  et 1350 miles maritime de l'Etat du Brésil et 2750 miles sw de l'Angleterre.
Tipo: Journal Contribution
Palavras-chave: Climatic zones; Abundance; Marine crustaceans; Marine ecology; Zooplankton; Climatic zones; Zooplankton; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_1669; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2003
URL: http://hdl.handle.net/1834/2616

La caballa (Scomber japonicus) y las condiciones ambientales en el area bonaerense de El Rincón (39°- 40°30' S), agosto 1996.
Provedor de dados: 20
Autores: Perrotta, R.G.; Madirolas, A.; Viñas, M.D.; Akselman, R.; Guerrero, R.A.; Sánchez, M.F.; López, F.; Castro Machado, F.; Macchi, G.J.
In August 1996 acoustic methods were employed to estimate mackerel (Scomber japonicus) abundance in the Buenos Aires, Argentina shelf area of "El Rincón" (4,287 mn2), located between 39°- 40° 30' S. Results showed a biomass estimate of 77,260 t. ASIMRAD EK-500 equipment operated with a 38 KHz split-beam transducer was used. Midwater fishing trawls were employed to identify echotraces and to collect mackerel samples.Trawls 4 and 5 were the most successful. Samples included only adult fish  (310-470 mm Lt and ages ranging 2-11). Length and weight growth parameters and mortality rates were estimated. Analysis of the stomach contents revealed that mackerel was feeding exclusively on zooplankters over 2 mmlength. The analysis of the characteristics (dimensions...
Tipo: Journal Contribution
Palavras-chave: Abundance; Biomass; Population structure; Zooplankton; Environmental conditions; Echo surveys; Biomass; Population structure; Zooplankton; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1999
URL: http://hdl.handle.net/1834/2529

Distribución del ictioplancton y zooplancton en la costa ecuatoriana septiembre 1995
Provedor de dados: 20
Autores: Ortega, D.; Elías, E.; Zurita, C.
Between the 6 and 13 of september of 1995, a study about the abundance, distribution of fish eggs and larvae in relation of the abundance and presence of the zooplankton in the Gulf of Guayaquil was carried out. The biggest fish larvae quantity was registered at station 16, 37 and 60 with values 500 and 1000 larvae.(10 m2)-1 which position at was long. 81~'00' - 82~'00'W; lat. 01~'00'S - 3~'04'S while the fish eggs concentration was 500 eggs.(10 m2)-1 at station 21. The smalles fish larvae quantity was registered between 6 and 73 larvae.(10 m2)-1, situated long. 81~'30' - 82~'00'W - lat. 02~'40' - 00~'59'S and 01~'00' south. At north of Gulf near of Puntilla of Santa Elena, Lat. 02~'00'S - Long. 81~'00'W, in the Center of the Ecuadorian coast, near of San...
Tipo: Journal Contribution
Palavras-chave: Ichthyoplankton; Zooplankton; Abundance; Geographical distribution; Zooplankton; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 1996
URL: http://hdl.handle.net/1834/2966

Aspectos ecológicos del plancton en las riberas del humedal Isla Santay, Río Guayas durante los años 2000 y 2002
Provedor de dados: 20
Autores: Tapia, M.E.; Naranjo, Ch.
El objetivo del presente estudio es conocer la distribución cualitativa y cuantitativa de las especies del fitoplancton, zooplancton e ictioplancton y su relación con las condiciones ambientales durante el período en estudio.
Tipo: Journal Contribution
Palavras-chave: Species diversity; Plankton; Phytoplankton; Zooplankton; Ichthyoplankton; Biomass; Abundance; Biological production; Marine ecology; Temporal variations; Plankton; Phytoplankton; Zooplankton; Biomass; Biological production; Species diversity; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2007
URL: http://hdl.handle.net/1834/2371

El zooplancton del hábitat reproductivo de la población bonaerense de anchoíta (Engraulis anchoita), con especial énfasis en crustáceos
Provedor de dados: 20
Autores: Viñas, M.D.; Marrari, M.; Di Mauro, R.; Cepeda, G.D.; Padovani, L.N.
The information gathered in Argentine anchovy (Engraulis anchoita) Northern population assessment cruises allowed to perform studies on the zooplankton community of the Buenos Aires shelf since 1995. In this work the most relevant results as regards the taxonomy and size structure of the community, faunistic areas, and 'key' species in relation to the hydrographic conditions and frontal systems of the region are presented. Besides, the consequences those results might have on Argentine anchovy trophic ecology are analyzed. The taxonomic groups studied included copepods, cladocerans, appendicularians, chaetognaths, amphipods, and euphausiids. The multivariate analysis applied to quantitative data allowed to clearly distinguish three faunistic areas with...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Biogeography; Fauna; Fronts; Trophic relationships; Abundance; Pelagic fisheries.
Ano: 2013
URL: http://hdl.handle.net/1834/5497

Modèle couple dynamique-écologie pour la lagune de Bizerte
Provedor de dados: 20
Autores: Béjaoui, B.; Harzallah, A.; Moussa, M.; Chapelle, A.
Ce travail porte sur le développement d’un modèle hydroécologique tridimensionnel basé sur deux éléments nutritifs l’azote et le phosphore. Le modèle hydrodynamique est forcé par des données climatiques mensuelles NOAA. Le modèle écologique a été développé en se basant sur deux éléments nutritifs l’azote et le phosphore en interaction avec le phytoplancton et le zooplancton. Le modèle écologique est constitué de deux compartiments, la colonne d’eau et la couche supérieure de sédiment. Huit variables d’états caractérisent la colonne d’eau et six le compartiment sédiment. Comme première application, le modèle a été testé sur la lagune de Bizerte. Une comparaison entre les résultats des simulations et les observations a montré que le modèle a pu reproduire...
Tipo: Journal Contribution
Palavras-chave: .; Dissolved oxygen; Hydrodynamics; Models; Nutrient cycles; Phytoplankton; Zooplankton; Dissolved oxygen; Models; Phytoplankton; Zooplankton; Hydrodynamics; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_4881; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_3723.
Ano: 2008
URL: http://hdl.handle.net/1834/3694

A null model for explain crustacean zooplankton species associations in central and southern patagonian in land waters
Provedor de dados: 20
Autores: De los Rios, Patricio.
Los ensambles zooplanctónicos en cuerpos de agua de la zona centro y sur de la Patagonia chilena se caracterizan por su alto endemismo y un relativo bajo número de especies lo cual se debería principalmente a la oligotrofía y niveles de conductividad de estos ambientes. El objetivo del presente trabajo consistió en analizar información publicada y sin publicar sobre crustáceos zooplanctónicos en lagos y lagunas de la zona central y sur de la Patagonia (44 - 53g S). A estos datos se les estimó la razón especies / género, y se aplicó un modelo nulo basado en co-ocurrencia de especies mediante una matriz de presencia y ausencia de especies, con la intención de determinar ausencia de factores reguladores de las asociaciones de especies. Dentro de este mismo...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Assemblages; Lakes; Ponds; Crustaceans.
Ano: 2008
URL: http://hdl.handle.net/1834/4161

Vertical migration of zooplankton groups in an Eutrophic bay, Dekhaila harbor, Alexandria, Egypt
Provedor de dados: 20
Autores: Abdel-Aziz, N.E.
Diel vertical migration of different zooplankton groups in Dekhaila Harbor was studied monthly from May 2003 to April 2004. Generally, more groups were found in the surface layer (0-10 m.) than the deeper one (10-20 m.). Some zooplankton groups undergo significant vertical migration at certain time of the year, others showed no clear differences in distribution patterns and exhibited no directed movement patterns. Some species stayed a part of the day within certain layer of the water column, others were randomly dispersed in the whole water column during different hours. Responses appear to depend also on the life stages of each zooplankton group, as well as other ecological conditions such as temperature, light and amount of food. Population budget...
Tipo: Journal Contribution
Palavras-chave: Hydrobiology Studies; Zooplankton; Vertical migrations; Ecology; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2006
URL: http://hdl.handle.net/1834/1455

Cambios de la densidad de los cladóceros P. avirrostris y E. tergentina durante las épocas cálidas y frías (Dic. 2004 y nov. 2005) en la Bahía de Santa Elena (La Libertad - Ecuador)
Provedor de dados: 20
Autores: Andrade, C.
El objetivo del presente estudio es determinar los cambios poblacionales durante las estaciones cálida y fría de este grupo taxonómico y del zooplancton acompañante más abundante en aguas de la Bahía de Santa Elena vs. las variables ambientales temperatura y salinidad.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Seasonal variations; Coastal waters; Community composition; Population number; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2007
URL: http://hdl.handle.net/1834/2345

Comunidades del zooplankton en los ríos Teaone, Esmeraldas, Terminal Petrolero y el balneario Las Palmas de Esmeraldas, durante el 2004
Provedor de dados: 20
Autores: Naranjo, Ch.
Los estudios del zooplancton en diferentes áreas principalmente en el río Teaone, Esmeraldas y la zona marino costera frente a la ciudad que incluye, el área del balneario Las Palmas, en el último año se ha intensificado con el objetivo de obtener un conocimiento detallado de la presencia de estos organismos y las características físico-químicas que condicionan su abundancia y distribución.
Tipo: Journal Contribution
Palavras-chave: Community composition; Zooplankton; Biological production; Salinity; Hydrogen; Water quality; Temporal variations; Species diversity; Zooplankton; Biological production; Water quality; Salinity; Hydrogen; Species diversity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_3724; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2005
URL: http://hdl.handle.net/1834/2372

Distribución de la biomasa de las fracciones planctónicas &lt; 200 μM y su contribución relativa a la biomasa total en las aguas oceánicas de la región noroccidental de Cuba.
Provedor de dados: 20
Autores: Orozco, M.V.; Loza, S.; Lugioyo, M.
Se evaluó el patrón de distribución espacial así como la contribución de las fracciones del plancton a la biomasa planctónica menor de 200 μm en la región NW de las aguas oceánicas adyacentes a Cuba en muestreos realizados en época de invierno (febrero de 1997 y marzo 1999). Los valores de la biomasa bacteriana variaron entre 1.6 y 11.4 mgC m-3, del nanoplancton entre 5.2 y 20.8 mgC m-3 (Xmedia = 11.4 ± 5.4 mgC m-3) y la del microzooplancton entre 4.2 y 15.5 mgC m-3 (Xmedia = 7.9 ± 3.2 mgC m-3). El microfitoplancton presentó valores de biomasa que variaron entre 1.95 y 15.7 mgC m-3 (Xmedia = 8.8 ± 3.7 mgC m-3). Los mayores valores de biomasa de todas las fracciones estudiadas se encontraron en las aguas oceánicas adyacentes a la zona entre las bahías de...
Tipo: Journal Contribution
Palavras-chave: 1461; Biomass; Bacteria; Nanoplankton; Oceanic waters; Zooplankton; Phytoplankton; Biomass; Bacteria.
Ano: 2009
URL: http://hdl.handle.net/1834/4119

Abundancia y distribución del ictioplancton, fito y zooplancton en el mar ecuatoriano en abril de 1995
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.; Elías, E.; Flores, M.E.
El presente trabajo trata de la distribución de la abundancia de huevos y larvas de peces en relación con la abundancia del zooplancton y fitoplancton colectado en 13 estaciones muestreadas a bordo del B/I TOHALLI durante el crucero pelágico-oceanográfico realizado en abril de 1995. Se analizó un total de 12820 huevos de peces. (10m²)¹ y 5145 larvas de peces (10m²)¹. La mayor abundancia de huevos y larvas de peces se localizó al este de las Islas Galápagos, en las estaciones 1P y 10, situadas en los extremos norte y sur del área de muestreo a la altura de la Isla San Cristóbal, con 5226 huevos (10m²)¹ y 1042 larvas (10m²)¹, respectivamente, mientras que la menor abundancia se localizó también al este de la Islas Galápagos, en las estaciones 7 y 5 con 109...
Tipo: Journal Contribution
Palavras-chave: Abundance; Ichthyoplankton; Phytoplankton; Zooplankton; Cruises; Fish eggs; Fish larvae; Phytoplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1998
URL: http://hdl.handle.net/1834/2278

Distribución estacional y ecología de las medusas (Cnidarias: Hydrozoa) en la zona costera sur de la Bahía de Santa Elena durante el período (Octubre 2004-octubre 2005)
Provedor de dados: 20
Autores: Andrade Ruíz, C.E.
La presente investigación se desarrolló en el sector sur de la Bahía de Santa Elena durante octubre 2004 a octubre 2005, analizándose un total de 144 muestras zooplanctónicas e identificándose 24 especies, clasificados en 6 órdenes: 5 de la clase Hydrozoa, con 16 familias; 22 géneros y 22 especies, y 2 clases: La clase Scyphozoa y Cubozoa con 1 especie respectivamente. Se consideró las dos épocas estacionales (lluviosa y seca) registrándose para la época lluviosa el 41% de biomasa total con 6477 ind. (100m3-1), mientras que en la época seca se registró el 59% de biomasa total con 9159 ind. ((100m3-1). El análisis estadístico determinó cambios entre la estación lluviosa con una correlación positiva promedio vs la temperatura con valores de 0.75. Mientras en...
Tipo: Journal Contribution
Palavras-chave: Seasonal distribution; Biomass; Dry season; Rainy season; Species diversity; Zooplankton; Hydrobiology.
Ano: 2012
URL: http://hdl.handle.net/1834/4710

Diagnóstico del plancton en el estuario de San Lorenzo en agosto 2006 (Esmeraldas-Ecuador)
Provedor de dados: 20
Autores: Torres, G.; Andrade, C.
Se realizó un monitoreo del plancton en el estuario de San Lorenzo en junio 2006. En los resultados se registró 128 especies del fitoplancton (método cuantitativo) y 50 especies (cualitativo). Las diatomeas más representativas fueron S. costatum, T. nitzschioides, P. longissima, L. danicus, Navicula sp., P. sulcata: T. nitzschioides. Thalassiosira sp. y flagelados (cuantitativo); S. costatum, Coscinodiscus sp., N. sigma y P.  Sulcata (cualitativo). La presencia de Gymnodinium sp. P. maximun y M. rubrum podría asociarse con la formación de mareas rojas al interior del estuario. En los resultados del zooplancton registrarón 16 taxas constituidos mayoritariamente por Zoeas de Brachiura y Copépodos, distribudidos en toda el área de estudio principalmente en...
Tipo: Journal Contribution
Palavras-chave: Plankton; Diatoms; Phytoplankton; Zooplankton; Biomass; Fish larvae; Eggs; Abundance; Estuaries; Species diversity; Zooplankton; Biomass; Eggs; Estuaries; Plankton; Phytoplankton; Fish larvae; Species diversity; Diatoms; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2007
URL: http://hdl.handle.net/1834/2378

Contribución al conocimiento del género Bolivina D'Orbigny 1839, (Foraminífero) en el Golfo de Guayquil
Provedor de dados: 20
Autores: Gualancañay, E.
Se analizaron 29 muestras de fondo en el presente estudio, entre las profundidades de 13 y 1958 m, colectadas durante el crucero R/V "Eastward", en octubre de 1976, (Tabla 1). Se identificaron un total de 11 especies del género Bolivina: B. acutula Bandy; B. alata (Seguenza); B. globulosa Cushman; B. interjuncta, f. typica Cushman; B. pacifica Cushman &amp; McCulloch; B. plicata D'Orbigny; B. pseudoplicata Heron-Allen &amp; Earland; B. pseudobeyrichi Cushman, f. bradyi Asano; B. subadvena serrata Natland; B. cf. spissa Cushman y B. tongi Cushman.
Tipo: Journal Contribution
Palavras-chave: Foraminifera; Geographical distribution; Zooplankton; Geographical distribution; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1983
URL: http://hdl.handle.net/1834/2341

Protocols for the Joint Global Ocean Flux Study (JGOFS) Core Measurements
Provedor de dados: 20
This manual describes the protocol approved by the international Scientific Steering Committee for the Joint Global Ocean Flux Study (JGOFS) for the most of the 20 JGOFS Core Measurements. However, the methods for the analysis of various parameters of the seawater CO2 system are described in a separate handbook. In order to have a complete set of the JGOFS measurements protocols, you should request a copy of the "Handbook of Methods for the Analysis of the Various Parameters of the Carbon Dioxide System in Seawater"version 2, A.G. Dickson and C. Goyet, eds. ORNL/CDIAC-74.
Tipo: Book
Palavras-chave: Oceanography; Ocean circulation; Oceanographic stations; Oceanographic data; Oceanographic surveys; Samples; Sampling; Data processing; Data; Data collections; Quality control; Salinity measurement; Oxygen; Inorganic carbon; Nitrites; Nitrates; Phosphorus compounds; Phosphorus cycle; Silicate minerals; Marine organisms; Microorganisms; Bacteriology; Bacteria; Zooplankton; Sampling; Nitrites; Nitrates; Zooplankton; Data processing; Data; Oxygen; Microorganisms; Bacteriology; Bacteria; Http://aims.fao.org/aos/agrovoc/c_6774; Http://aims.fao.org/aos/agrovoc/c_5190; Http://aims.fao.org/aos/agrovoc/c_5187; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_10289; Http://aims.fao.org/aos/agrovoc/c_49816; Http://aims.fao.org/aos/agrovoc/c_5477; Http://aims.fao.org/aos/agrovoc/c_4807; Http://aims.fao.org/aos/agrovoc/c_768; Http://aims.fao.org/aos/agrovoc/c_765.
Ano: 1994
URL: http://hdl.handle.net/1834/2795

Quetognatos de las Islas Galápagos durante el crucero oceanográfico del 17 al 26 de noviembre de 1978
Provedor de dados: 20
Autores: Bonilla, D.
Este estudio se refiere a los quetognatos obtenidos en las muestras colectadas en las Islas Galápagos entre el 17 y 26 de noviembre de 1978 a bordo del "BAE ORION". Está basado en arrastres planctónicos realizados verticalmente desde varias profundidades, la máxima de las cuales fue 150 m, a la superficie, usando redes de 600 micras de malla. Dieciocho especies estuvieron presentes en las muestras, todas epiplantónicas, excepto S. decipiens, especie mesoplanctónica. Se discute su distribución geográfica y su relativa abundancia. Las especies más abundantes, en orden decreciente de abundancia son: Sagitta enflata, Pterosagitta draco, S. pacifica, S. hexaptera, Krohnitta subtilis, S. bedoti, K. pacifica. La presencia en las muestras (especialmente al Sur,...
Tipo: Journal Contribution
Palavras-chave: Cruises; Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1983
URL: http://hdl.handle.net/1834/2093

Acumulación de metales pesados en microcrustáceos planctónicos provenientes de un embalse contaminado por relaves mineros, embalse Rapel (34° 10' S - 71° 29' W), Chile
Provedor de dados: 20
Autores: Mercado Leal, S.I.
El embalse Rapel, es un cuerpo de agua que está siendo sometido a un fuerte impacto antropogénico, por lo que evidencia severos signos de eutrofización. Esto último debido a que el embalse se ha transformado en el cuerpo receptor de una gran diversidad de efluentes (industriales, agrícolas y domésticos), que evacuan sus descargas sin ningún tipo de tratamiento. A lo cual se le debe agregar la recepción de aguas provenientes de los relaves de la mina de cobre “El Teniente”. Con el objetivo de determinar la presencia y acumulación de metales pesados en el agua y en los organismos zooplanctónicos, durante el mes de Octubre del 2003 se tomaron muestras de agua y de ejemplares de Ceriodaphnia dubia, Bosmina chilensis y Diaptomus diabolicus. Como especies...
Tipo: Theses and Dissertations
Palavras-chave: Heavy metals; Freshwater pollution; Water reservoirs; Water analysis; X-ray spectroscopy; Zooplankton; Man-induced effects.
Ano: 2004
URL: http://hdl.handle.net/1834/4899

Especies planctónicas marinas como bioindicadoras de masas de agua frente a la costa ecuatoriana durante el evento El Niño 2009-2010
Provedor de dados: 20
Autores: Cruz, M.; Tapia, M.E.; Naranjo, Ch.
Con la finalidad de determinar la influencia del evento El Niño 2009-2010 que se dsarrolló en elas regiones Niño 1+2 y 3.4, en base a los organismos indicadores de masas de aguas para determinar la intensidad y efectos en la costa ecuatoriana, se utilizaron cinco grupos de organismos planctónicos: Diatomeas, Dinoflagelados, Quetognatos, Pterópodos, Heterópodos y las concentraciones de clorofila a antes, durante y después del evento El Niño 2009-2010. En el primer trimestre del 2009 se registró una alta producción primaria, mientras que desde septiembre a noviembre se observó la más baja productividad del mar, en las estaciones fijas La Libertad como en Manta.En la estación fija de La Libertad, durante todo el 2009 predominaron especies de fitoplancton que...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Indicator species; Diatoms; Primary production; El Nino phenomena; Water masses.
Ano: 2010
URL: http://hdl.handle.net/1834/4213

Biodiversidad y distribución temporal de zooplancton gelatinoso en bahía Fildes
Provedor de dados: 20
Autores: Mora, G.
El proyecto “Biodiversidad y distribución temporal de zooplancton gelatinoso en bahía Fildes”, perteneciente al Programa de Apoyo a Tesis en Temas Antárticos, organizado por el INACH, aportará información sobre la fluctuación temporal, de corto plazo, de los principales grupos de zooplancton gelatinoso (medusas, sifonóforos, quetognatos, ctenóforos y salpas) y su asociación con las variables ambientales de temperatura y salinidad.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Biodiversity; Antarctica.
Ano: 2011
URL: http://hdl.handle.net/1834/4502

Distribución espacio-temporal del ictioplancton y zooplancton marino en las Islas Galápagos, Ecuador (1988-2001)
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
La distribución del ictioplancton y zooplancton alrededor de las Islas Galápagos, 89°W, 92°30'W y 01°N, 02°S, fue realizada con datos e información proveniente de cruceros de investigación entre los años 1988 hasta 2001. Áreas de mayor abundancia de zooplancton  e ictioplancton han sido identificadas hacia el norte y sur de Isla Isabela y alrededor de la Isla Fernandina, asociados a la Corriente de Cromwell y afloramiento foraminíferos planctónicos, larvas de eufásidos y copépodos fueron predominantes en las áreas mencionadas. Activa productividad secundaria relacionada con el frente ecuatorial se observó también hacia el sureste de Isabela, este de San Cristóbal y norte de Isla Santiago, con elevados porcentajes (&gt;50%) de Globigerina bulloides...
Tipo: Journal Contribution
Palavras-chave: Ichthyoplankton; Zooplankton; Upwelling; Foraminifera; Abundance; Cruises; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2009
URL: http://hdl.handle.net/1834/3358

Importancia de diferentes taxa de copepodos en la dieta de los adultos de anchoita (Engraulis anchoita) bonaerense durante la época reproductiva
Provedor de dados: 20
Autores: Padovani, L.
Engraulis anchoita is the most abundant and widespread ichthic species in the SW Atlantic. Two populations of the species occur in the Argentine Sea, a northern one or Bonaerense (34 degree -41 degree S)and a southern one or Patagonian (41 degree -47 degree S). The former performs an annual migratory cycle which includes the concentration in the northern area in winter, the distribution in coastal waters off Buenos Aires prov. during spring spawning period and the concentration in the shelf feeding ground in summer. In this work the feeding habits of the northern population were studied in its spring habitat. Fish samples were obtained in 16 stations from the Buenos Aires prov. shelf, during a research cruise of the INIDEP (National Institute for Fisheries...
Tipo: Theses and Dissertations
Palavras-chave: Abundance; Environmental conditions; Feeding behaviour; Food preferences; Stomach content; Zooplankton; Ichthyoplankton surveys; Feeding behaviour; Food preferences; Zooplankton; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2006
URL: http://hdl.handle.net/1834/2600

Planktonic copepods from coastal and inshore waters of Tudor Creek, Mombasa
Provedor de dados: 20
Autores: Revis, N.; Okemwa, E.
Fifty two free swimming planktonic copepod species were identified from the samples collected from three stations in Tudor Creek, Kenya. This appears to be the first systematic account of copepods reported from the coastal and inshore waters of Kenya.
Tipo: Journal Contribution
Palavras-chave: Copeda; Biological sampling; Taxonomy; Zooplankton; Taxonomy; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1986
URL: http://hdl.handle.net/1834/1290

Variación espacial de la biodiversidad mesozooplantónica en un sector de la plataforma costera bonaerense (34°-41° S)
Provedor de dados: 20
Autores: Cepeda, G.
En las últimas décadas ha crecido la conciencia a nivel mundial de que la biodiversidad en el océano está sufriendo importantes alteraciones debido a la actividad humana y al cambio climático global, y de que estas alteraciones en muchos casos son irreversibles. Por tal motivo diversos autores señalan la necesidad de enfatizar los estudios de biodiversidad en todos los ambientes marinos (Angel, 1991; Lasserre, 1991; Gray, 2001). Actualmente se están realizando grandes esfuerzos a nivel internacional para incrementar el conocimiento de la diversidad, distribución y abundancia de la vida marina en general (Proyecto Census of Marine Life; www.coml.org) y del zooplancton en particular (Proyecto Census of Marine Zooplankton; www.cmarz.org). La biodiversidad de...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Environmental conditions; Hydrography; Abundance; Assemblages; Identification keys; Geographical distribution; Geographical distribution; Zooplankton; Environmental conditions; Hydrography; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_3727.
Ano: 2006
URL: http://hdl.handle.net/1834/2951

Estudio taxonómico de los quetognatos del Golfo de Guayaquil
Provedor de dados: 20
Autores: Bonilla, D.
El presente estudio se basa en el análisis de 42 muestras de plancton obtenidas en dos cruceros realizados en las estaciones lluviosa y seca (Enero 31 a Febrero 3; Junio 28 a Julio 3, 1978), en el Golfo de Guayaquil. Se realiza una revisión de las características morfológicas de valor sistemático para la identificación de 18 especies de quetognatos y que corresponden a tres géneros: Sagitta, pterosagitta y krohnitta. De las especies encontradas, Sagitta bedfordii es reportada por primera vez para aguas del Pacífico Oriental, en particular para el Golfo de Guayaquil. Finalmente se hace comentarios generales sobre la ocurrencia de las especies en el área de estudio así como de su distribución general en los océanos.
Tipo: Journal Contribution
Palavras-chave: Taxonomy; New records; Zooplankton; Organism morphology; Taxonomy; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1983
URL: http://hdl.handle.net/1834/2152

Variación temporal del zooplancton  de una estación fija en Bahía Academia (Galápagos) período 1986-1988: Su relación con la temperatura superficial
Provedor de dados: 20
Autores: Arcos, F.; Bonilla, M.A.
El presente trabajo se basa en el estudio cuali-cuantitativo y de diversidad de 95 muestras de plancton colectadas semanalmente en aguas superficiales costeras en una estación fija localizada en Bahía Academia, Isla Santa Cruz (Galápagos) durante septiembre 1986-septiembre 1988. Se exponen 27 grupos de organismos de zooplancton, siendo los dominantes, los copépodos, larvas de decápodos, huevos de peces, lamelibranquios, ostrácodos, pterópodos y apendicularios; y los más frecuentes, copépodos, larvas de decápodos, huevos de peces, pterópodos, apendicularios, quetognatos, lamelibranquios y larvas de peces. Se determinan los diversos géneros de copépodos, siendo las especies más abundantes en orden decreciente: Acartia levenquei, Pseudodiaptomus galapaguensis...
Tipo: Journal Contribution
Palavras-chave: Temporal variations; Zooplankton; Coastal waters; Surface temperature; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1989
URL: http://hdl.handle.net/1834/2149

Spatio-temporal variations of zooplankton community in the hypersaline lagoon of Bardawil, North Sinai, Egypt
Provedor de dados: 20
Autores: Mageed, A.A.A.
Bardawil Lagoon is a shallow oligotrophic hypersaline lake, located at the northern periphery of Sinai peninsula-Egypt, connected to SE Mediterranean Sea through two main openings known as Boughazes. Distribution of zooplankton in Bardawil Lagoon during 2004 was studied, not only in space and time but also with reference to species assemblages and environmental factors. Copepoda, Protozoa, and Mollusca were dominating the lagoon zooplankton community during the period of study with 58 identified forma. Zooplankton stock peaked during August and October with severe depletion in spring. Spatially, the maximum density occurred near the sea opening I.  The lowest density and species richness were noticed at stations with high salinity. The community...
Tipo: Journal Contribution
Palavras-chave: Hydrobiology Studies; Zooplankton; Salinity; Lagoons; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2006
URL: http://hdl.handle.net/1834/1456

Variación estacional del zooplancton en el sector estuarial de la laguna Mar Chiquita. Su relación con algunas variables ambientales.
Provedor de dados: 20
Autores: Firpo, C.
El zooplancton de lagunas costeras se caracteriza por su baja diversidad y la dominancia de algunas especies que toleran sus condiciones ambientales cambiantes. La laguna costera Mar Chiquita está ubicada a los 37º32'S - 37º45’S y 57º19’-57º26’ W, posee un cuerpo lagunar de escasa profundidad y un canal por el cual se conecta con el mar, que posee características estuariales. Dada la escasa información referida al zooplancton de esta laguna el presente trabajo tiene como objetivo describir la taxocenosis del zooplancton, las variaciones estacionales de la abundancia y diversidad y la relación de dichas variaciones con la salinidad y temperatura, para dos estaciones ubicadas en el sector estuarial. Los muestreos mensuales se realizaron en dos estaciones...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Seasonal variations; Environmental conditions; Abundance; Community composition; Brackishwater environment; Coastal lagoons; Zooplankton; Environmental conditions; Coastal lagoons.
Ano: 2002
URL: http://hdl.handle.net/1834/3911

Estructura de la comunidad de zooplancton en condiciones de descarga continental y afloramiento costero en Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Bernal, A.; Zea, S.
Se estudiaron las variaciones en la estructura taxonómica y trófica de la comunidad de zooplancton en la provincia nerítica del área de Santa Marta, Mar Caribe Colombiano, asociadas a fertilizaciones alternantes entre descarga continental y afloramiento costero. Los muestreos se efectuaron en noviembre de 1991 durante la temporada mayor de lluvias, y en marzo de 1992 durante la temporada seca. Los organismos fueron identificados y contabilizados, determinándose la biomasa por nivel trófico. Se discriminaron 82 especies-taxa, la mayoría de ellas oceánico costeras y con predominancia de omnívoros. La composición de la comunidad varió temporal y espacialmente con las condiciones oceanográficas predominantes, evidenciando procesos sucesionales relacionados con...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Trophic structure; Coastal upwelling; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2000
URL: http://hdl.handle.net/1834/3303

Evaluation de la contamination chimique par les metaux traces (cd, pb, hg et zn) du zooplancton et de la sardinelle (Sardinella aurita) dans le golfe de tunis
Provedor de dados: 20
Autores: Chouba, L.; Ennouri, R.; Kraiem, M.M.
La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis.  Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine.  Pour le Pb, le Hg et le Zn,  les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que  le Cd est concentré davantage au niveau du foie. Les concentrations...
Tipo: Journal Contribution
Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Marine environment; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_4610.
Ano: 2008
URL: http://hdl.handle.net/1834/4155

Contribución al estudio de los quetognatos alrededor de las Islas Galápagos
Provedor de dados: 20
Autores: Naranjo, Ch.
El presente estudio tiene como labor fundamental conocer la distribución cuantitativa de las especies de quetognatos y su relación con factores como la temperatura, salinidad y establecer áreas de alta productividad en las Islas Galápagos con la presencia de especies bio-indicadoras de afloramiento.
Tipo: Journal Contribution
Palavras-chave: Indicator species; Upwelling; Zooplankton; Marine invertebrates; Population density; Environmental factors; Zooplankton; Environmental factors; Indicator species; Population density; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2594; Http://aims.fao.org/aos/agrovoc/c_35790; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 2000
URL: http://hdl.handle.net/1834/2223

Aporte al conocimiento del zooplancton de agua dulce y estuarina del río Guayas. Guayaquil - Ecuador
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
El presente trabajo corresponde al análisis de zooplancton colectado en cinco estaciones localizadas en el río Guayas. La primera estación estuvo situada 10 km. río arriba de la confluencia del río Babahoyo con el río Daule, en un pozo acuífero. Las otras estaciones se situaron en cuatro sitios consecutivos a lo largo del río Guayas. En este trabajo se han identificado 10 especies: Brachionus plicatilis (O. F. Muller) (Rotifera), Alona cambouei Guerne and Richard, 1893; Moina micrura Kurz, 1874 (Cladocera); Acartia tonsa Dana, 1848; Oithona dissimilis Linberg, 1940; Oithona neotropica Herbs, 1967; Oithona oligohalina Fonseca o Bjornberg, 1976; Mesocyclops longisetus (Thiebaud, 1914) y Pseudodiaptomus longispinosus Chad, 1989 (Copepoda). Las especies...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Fresh water; Geographical distribution; Rivers; Estuaries; Brackish water; Zooplankton; Geographical distribution; Rivers; Estuaries; Brackish water; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1049.
Ano: 1998
URL: http://hdl.handle.net/1834/2295

Productividad planctónica y condiciones oceanográficas locales en Isla Gorgona durante julio 2006
Provedor de dados: 20
Autores: Valencia, B.; Giraldo, A.; Ramírez, D. G.
La isla Grogona es la mayor área insular en el Pacífico colombiano. Esta isla, localizada a 30 Km del continente, alberga una alta diversidad biológica y ecosistémica entre la que se incluye el arrecife coralino más desarrollado del Pacífico Oriental Tropical. A pesar de la alta relevancia de esta localidad en la política nacional ambiental, un escaso esfuerzo de investigación ha sido focalizado hacia la descripción del ambiente pelágico, el cual sustenta las particularidades ecosistémicas de isla Gorgona. En este trabajo se describen las condiciones de temperatura, transparencia, trubidez, salinidad, oxígeno disuelto, nutrientes nitrogenados (nitratos) y productividad plantónica (clorofila-a y biomasa zooplanctónica) local en el ambiente pelágico del...
Tipo: Journal Contribution
Palavras-chave: Oceanography; Phytoplankton; Zooplankton.
Ano: 2011
URL: http://hdl.handle.net/1834/4414

Composición, distribución y abundancia relativa de copépodos pelágicos calanoideos y no calanoideos en aguas ecuatorianas durante el evento La Niña en septiembre de 2001
Provedor de dados: 20
Autores: Tutasi, P.
El presente trabajo es una contribución para el conocimiento de la oceanografía biológica de la región ecuatorial tropical donde se manifiestan estas importantes perturbaciones climáticas.
Tipo: Journal Contribution
Palavras-chave: Community composition; Marine crustaceans; Abundance; Plankton; Zooplankton; Marine ecology; Indicator species; El Nino phenomena; Geographical distribution; Plankton; Zooplankton; Geographical distribution; Marine ecology; Indicator species.
Ano: 2006
URL: http://hdl.handle.net/1834/2329

Short term variations of zoo plankton community in the West Naubaria Canal, Alexandria, Egypt
Provedor de dados: 20
Autores: Abdel-Aziz, N.E.
The variations of zooplankton structure and abundance were studied at short time intervals in the northern part of the West Naubaria Canal, near the sea side, based on weekly sampling from May 2002 to May 2003 .The community represented high species richness (120 species), and relatively low population density ( annual average 31340 organisms/m.3). Freshwater forms were the major representatives (68 species) of the community, including the sea side station. However, several marine species were reported inside the canal at a long distance from the sea. The community structure showed wide weekly variations (4-29 species), while between stations the differences were small.  Relative to salinity in the canal, diversity index sustained the highest value (annual...
Tipo: Journal Contribution
Palavras-chave: Naubaria Canal; Salinity; Zooplankton; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2005
URL: http://hdl.handle.net/1834/1300

Relación fitoplancton-zooplancton en el Pacífico Ecuatorial (Ecuador), durante septiembre 2001
Provedor de dados: 20
Autores: Salazar, E.; Mero, M.; Torres, G.; Calderón, T.; Franco, V.
El presente trabajo es una contribución al conocimiento de la bio-oceanografía del mar ecuatoriano, forma parte del Proyecto de Monitoreo de las condiciones oceanográficas en el mar ecuatoriano y su relación con eventos de El Niño, realizadas en el B/I ORION del Instituto Oceanográfico de la Armada (INOCAR) en septiembre-octubre 2001, como un aporte a la comunidad.
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Biogeography; Abundance; Equatorial upwelling; El Nino phenomena; Distribution; Chlorophylls; Phytoplankton; Zooplankton; Distribution; Biogeography; Chlorophylls.
Ano: 2003
URL: http://hdl.handle.net/1834/2340

Variaciones de la abundancia numérica y biomasa del zooplancton de red en el Golfo San Jorge (año 1985)
Provedor de dados: 20
Autores: Pérez Seijas, G.M.; Ramirez, F.C.; Viñas, M.D.
A study was made on numercial and biomass variations of the zooplankton of the San Jorge Gulf (Argentina), based on samples from five cruises performed during 1985. The sampling was included within a proagramme for the biology and fishery evaluation of the shrimp Pleoticus muelleri. San Jorge, a large gulf of the northern patagonian shelf, comprises major fishery activities. Some fish species of economical importance depend on copepods for their feeding, like anchovy (Engraulis anchoita)or partially on middle-size plankters, like mackerel (Scomber japonicus). As a way for determining the trophic disponibility at the gulf, a study was made in order to express the numerical abundance of copepods, euphausiids and amphipods and other items of lesser...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Biomass; Size distribution; Population density; Zooplankton; Biomass; Population density; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 1987
URL: http://hdl.handle.net/1834/2006

Zooplancton en el estuario interior del Golfo de Guayaquil, durante mayo del 2001
Provedor de dados: 20
Autores: Naranjo, Ch.
Los objetivos del estudio son conocer la situación actual del zooplancton con la finalidad de conocer la composición, distribución y abundancia de las comunidades del zooplancton, resaltando las áreas de mayor productividad en el segundo eslabón de la cadena alimentaria. Establecer especies dominantes en la comunidad de quetognatos y su relación con los parámetros físicos en el estuario interior del Golfo de Guayaquil.
Tipo: Journal Contribution
Palavras-chave: Composition; Distribution; Biomass; Zooplankton; Salinity; Abundance; Biological production; Estuaries; Estuarine organisms; Biological production; Estuaries; Distribution; Biomass; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2002
URL: http://hdl.handle.net/1834/2271

Taxonomía de larvas Zoea de crustáceos decápodos del área Nororiental del mar Caribe colombiano
Provedor de dados: 20
Autores: Medellín-Mora, J.; Campos, N.H.; Franco-Herrera, A.; Jaimes, J.C.
Se estudió la composición de las larvas zoea de crustáceos decápodos de la región nororiental del Caribe colombiano mediante arrastres oblicuos de zooplancton realizados con un sistema de red bongo durantre julio-agosto, noviembre-diciembre de 1997 y marzo-abril de 1998. De las muestras colectadas, se separaron las zoeas y con base en bibliografía especializada se identificaron hasta el nivel taxonómico de familia. Se describieron 30 familias de decápodos con base en caracteres externos como la forma del cuerpo, ojos, antenas, anténulas, caparazón, abdomen, telson, número de apéndices toráxicos y segmentos del abdomen, así como la presencia, ausencia y conteo de espinas en cada uno de éstos. De esta forma, se elaboraron claves taxonómicas, con el fin de...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Composition; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2009
URL: http://hdl.handle.net/1834/3580

Bioecología de huevos y larvas de peces Cetengraulis mysticetus (Chuhueco), Opisthonema sp. (Pinchagua) y Anchoas en la reserva ecológica manglares Cayapas-Mataje -  Ecuador
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.; Solano Ch., F.; Cevallos, D.
La presente investigación es parte del Convenio de Cooperación Técnica entre el Fondo Ecuatoriano Populorum Pregressio (FEPP) y el Instituto Nacional de Pesca (INP) y tiene como fin principal el estudio de huevos y larvas de chuhueco (Cetengraulis mysticetus), anchoas (Anchoa sp., Anchovia sp. y Engraulis) y pinchagua (Opisthonema sp.) en relación con abundancia y distribución de la microfauna zooplanctónica presente en los esteros durante el período comprendido entre abril del 2000 y diciembre del 2001.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Ichthyoplankton; Eggs; Larvae; Mangroves; Zooplankton; Eggs; Larvae; Mangroves; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_4204; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 2007
URL: http://hdl.handle.net/1834/2404

Variación y frecuencia de algunas especies de Rotíferos provenientes de la Ciénaga Grande de Santa Marta (Colombia)
Provedor de dados: 20
Autores: Avila Parga, Guerly.
Se describen las variaciones de seis especies de Rotíferos, en un lapso determinado, con respecto a los fuertes cambios de salinidad que presenta la Ciénaga Grande. Cuatro de las especies pertenecen a la familia Brachionidae siendo tres especies del género Brachionus y una del género Platyias; una especie pertenece al género Lecane (familia Lecanidae) y una al género Filinia de la familia Testudinelidae. También se comunica la existencia, para esa región colombiana, de otros géneros de Rotíferos.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Plankton; Microorganisms; Seasonal variations; Coastal lagoons; Estuaries; Zooplankton; Plankton; Estuaries; Microorganisms; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_4807; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1973
URL: http://hdl.handle.net/1834/3316

An introduction to the Zooplankton of the Benguella current Region
Provedor de dados: 20
Autores: Gibbons, M.J.
The Benguella Current Large Marine Ecosystem (BCLME) is situated off the west coast of southern Africa and is one of the four eastern boundry upwelling systems in the world. It's high level of primary productivity supports an important global resevoir of biodiversity and biomass of zooplankton, fish, seabirds,....
Tipo: Other
Palavras-chave: Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1997
URL: http://hdl.handle.net/1834/1252

Los eufáusidos en el Pacífico sudeste (03°16'S-31°23'S) durante el evento "El Niño", diciembre de 1997
Provedor de dados: 20
Autores: Castañeda, P.
El objetivo de este trabajo es establecer las especies de eufáusidos que caracterizan a las masas de agua en el Pacífico sudeste durante "El Niño 1997".
Tipo: Journal Contribution
Palavras-chave: Distribution; Abundance; Marine crustaceans; El Nino phenomena; Species diversity; Zooplankton; Distribution; Zooplankton; Species diversity.
Ano: 1998
URL: http://hdl.handle.net/1834/2270

Composición, distribución y abundancia del plancton en el estuario de San Lorenzo, Esmeraldas - Ecuador
Provedor de dados: 20
Autores: Naranjo, Ch.; Tapia, M.E.
El presente trabajo es una contribución al estudio del plancton estuarino presente en el área comprendida del Canal de San Lorenzo, provincia de Esmeraldas, para lo cual existe poca información sobre este tema.
Tipo: Journal Contribution
Palavras-chave: Distribution; Composition; Abundance; Plankton; Phytoplankton; Zooplankton; Ichthyoplankton; Diatoms; Biomass; Distribution; Plankton; Phytoplankton; Zooplankton; Biomass; Diatoms; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2002
URL: http://hdl.handle.net/1834/2277

Estrategias de vida de los copépodos Drepanopus forcipatus y Calanus australis en relación con los recursos tróficos en la plataforma patagónica austral (Argentina, 47°- 55°S)
Provedor de dados: 20
Autores: Antacli, J.C.
This Thesis contributes to elucidate the life cycle strategies of two copepod species, the medium-size clausocalanid Drepanopus forcipatus Giesbrecht, 1888 and the large calanid Calanus australis Brodsky, 1959, in relation to the environmental conditions in the southern Patagonian shelf (47°-55°S). This research was mainly carried out with samples collected in late summer/early autumn (March/April, 2004) onboard RV "Dr. E. L. Holmberg" (INIDEP, Mar del Plata). An additional sampling performed during early spring (October, 2005) with RV "Puerto Deseado" (CONICET) was also utilized. The present study was based on the following research questions: 1) Which is the available food for copepod populations by late summer? 2) Which is the relative contribution of...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Trophic levels; Population structure; Hydrography; Community composition.
Ano: 2011
URL: http://hdl.handle.net/1834/4205

Zooplankton biomass in the reproductive area of the southern blue whiting (Micromesistius australis).
Provedor de dados: 20
Autores: Sabatini, M.; Alvarez Colombo, G.L.; Ramirez, F.C.
Total and size-fractioned zooplankton biomass (larger and smaller than 5 mm) were analyzed over two cruises conducted in the late austral winter (September 1994 and 1995) in the area surrounding Malvinas Islands at the time that massive spawning of southern blue whiting was expected to take place. Biomass was rather uniformly distributed in the area and dominated by the fraction larger than 5 mm in which euphausiids and secondarily chaetognaths were dominating in terms of both weight and number. The smaller fraction was mostly made up of copepods. From the high occurrence of euphausiids and seasonal abundance of the several species of copepods normally present within the area it was hypothesised that the feeding requirements of juvenile and adult blue...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Abundance; Size distribution; Biomass; Spawning seasons; Zooplankton; Biomass; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 1999
URL: http://hdl.handle.net/1834/2568

Influence of salinity variations on zooplankton community in el-mex bay, alexandria, egypt
Provedor de dados: 20
Autores: Zakaria, H.Y.; Radwan, A.A.; Said, M.A.
El-Mex Bay receives a heavy load of waste waters (7×109 m3/year) both directly from industrial outfalls and indirectly from Lake Maryuit via El-Mex Pumping Station. Zooplankton samples were collected bimonthly from seven stations during the period March 2005 to January 2006 to illustrate the influence of salinity variations on the abundance and community structure of zooplankton in El-Mex Bay waters. Based on the salinity values, four water types are identified: the mixed land drainage (L) of salinity &lt; 10ppt, mixed water (M) of salinity range 10 to 30ppt, diluted sea water (D) of salinity range 30 to 38.5 ppt and Mediterranean Sea water (S) of salinity &gt; 38.5. The highest zooplankton standing crop (106.6×103 ind/m3) was recorded in the mixed land...
Tipo: Journal Contribution
Palavras-chave: Field Study; Zooplankton; Salinity; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2007
URL: http://hdl.handle.net/1834/2211

Composición y variación estacional del fitoplancton, zooplancton y microbentos en el estuario interior del Golfo de Guayaquil, durante el año 2003
Provedor de dados: 20
Autores: Gualancañay, E.; Tapia, M.E.; Naranjo, Ch.
El presente trabajo comprende el estudio de la distribution cualitativa y cuantitativa del fitoplancton en el Golfo de Guayaquil, durante dos épocas: Húmeda y seca. El propósito del presente trabajo con respecto al zooplankton está orientado a conocer los cambios en la composición, abundancia y diversidad del zooplancton y en particular el Phyllum Chaetognatha con el objetivo de relacionar la distribución de las especies de Quetognatos con los parámetros físicos. En lo relacionado al estudio del microbentos, se pretende estudiar la composición específica y la abundancia relativa de las especies de la microflora béntica y de la microfauna bentónica y su relación con factores ambientales.
Tipo: Journal Contribution
Palavras-chave: Community composition; Seasonal variations; Phytoplankton; Diatoms; Biomass; Zooplankton; Microorganisms; Benthos; Geographical distribution; Estuaries; Phytoplankton; Biomass; Zooplankton; Benthos; Geographical distribution; Estuaries; Diatoms; Microorganisms; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_4807.
Ano: 2004
URL: http://hdl.handle.net/1834/2283

Distribution and long-term historical changes of zooplankton assemblages in lake manzala (south mediterranean sea, egypt)
Provedor de dados: 20
Autores: Mageed, A.A.A.
The northern lakes of Egypt have always acted as a buffer zone between the drainage system in the Nile Delta and the Mediterranean Sea. Most of these lakes are exposed to high inputs of industrial and domestic wastewater as well as agricultural drainage water, like Lake Manzala, which influence the living organisms on the long run. Samples of zooplankton were collected monthly from ten stations among Lake Manzala showing the different microhabitat of the lake. A one year monitoring has been carried out. Lake Manzala has been changed from marine ecosystem to eutrophic, nearly, freshwater system with the dominance of rotifers (cal ~ 97%). Twenty newly recorded zooplankton taxa were found for the first time in the lake during the study, while thirteen taxa...
Tipo: Journal Contribution
Palavras-chave: Field Study; Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2007
URL: http://hdl.handle.net/1834/1901

Variabilite mensuelle du zooplancton et de l'ichtyoplancton dans le golfe de Tunis
Provedor de dados: 20
Autores: Missaoui, H.; El Abed, A.; M'rabet, R.; Romdhane, M.S.; Zarrad, R.; Jarboui, O.
Monthly variability of zooplankton and ichthyoplankton abundance and composition were studied in 6 stations in the Gulf of Tunis between February 2003 and January 2004. Plankton trawls were horizontal, in surface and at night. Study area seems to be influenced by climatic conditions and the outflow of Majreda River that affect the surface temperature and salinity. Copepods, with many abundance peaks in the year, formed the most abundant group (84%) followed by cladocerans (8%) and chaetognaths (3%). The appendicularians, cladocerans and medusae had swarms in the summer, the creseis and the chaetognths in the autun and the zoae larvae in the spring. The highest fish spawning periods was in summer then the highest larva abundance was in winter and...
Tipo: Journal Contribution
Palavras-chave: Community composition; Fish larvae; Ichthyoplankton; Temporal variations; Zooplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 2004
URL: http://hdl.handle.net/1834/4242

Procesos planctónicos en el Golfo de Guayaquil (Campo Amistad) julio-agosto/2001
Provedor de dados: 20
Autores: Torres Ch., G.; Calderón, T.; Mero, M.; Franco, V.
El presente trabajo es una contribución al estudio del fitoplancton y zooplancton marino-estuarino y su relación con las condiciones ambientales físico-químicas presentes en el entorno de la plataforma Amistad de producción de gas (Campo Amistad - Golfo de Guayaquil Externo), realizada por el Instituto Oceanográfico de la Armada en el B/I ORION durante julio-agosto del 2001.
Tipo: Journal Contribution
Palavras-chave: Biomass; Chlorophylls; Nutrients (mineral); Zooplankton; Phytoplankton; Environmental assessment; Production platforms; Biomass; Zooplankton; Phytoplankton; Chlorophylls; Environmental assessment; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_37751.
Ano: 2004
URL: http://hdl.handle.net/1834/2285

Distribución de quistes de Alexandrium catenella y otros dinoflagelados en sedimentos de la zona sur-austral de Chile
Provedor de dados: 20
Autores: Lembeye, Georgina.
During the expeditions Cimar - Fiordos 2, 3 and 4 (1996, 1997 and 1999), samples of marine sediments were collected in Southern Chile, between Melinka (Lat. 43° 45' S) and Beagle Channel (Lat. 54° 56' S) to study the distribution and abundance of dinoflagellate cysts, particularly the toxic dinoflagellate Alexandriurn catenella. Samples were collected from 33 stations at depths of 1 to 15 meters. The study included photographic record and taxonomic identification of cysts to genus and, whenever possible, to species, with emphasis on the identification of cysts of A. catenella. Cysts from samples collected in cruises 3 and 4, were incubated in f/2-Se culture medium at 13 °C with controlled photoperiod (14:10, L:D), to induce germination and confirm species...
Tipo: Journal Contribution
Palavras-chave: Sediments; Quantitative distribution; Cysts; Zooplankton; Cysts; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2004
URL: http://hdl.handle.net/1834/4126

Caracterización biológica de la bahía de Jaramijó en la costa Ecuatoriana
Provedor de dados: 20
Autores: Gualancañay, E.; Tapia, M.E.; Naranjo, Ch.; Cruz, M.; Villamar, F.
Para el estudio biológico y ambiental de la bahía de Jaramijó en los componentes fitoplancton, zooplancton, microbentos y macrobentos, se analizaron 15 estaciones provenientes de tres niveles entre 10 y 20 metros de profundidad y dividido en tres perfiles paralelos a la costa, durante las estaciones seca y lluviosa del año 2008. El fitoplancton y zooplancton resultaron muy abundantes durante la estaciòn lluviosa y menos abundante en la estación seca del año 2008. Predominaron las especies de diatomeas: Bacteriastrum hyalinum, Leptocylindrus danicus, Rhizósolenia stolterfothii, Chaetoceros affinis y Ch. curvisetus y la presencia de dinoflagelados y cianobacterias fue escasa dinoflagelados. En general las especies halladas son típicas de una mezcla de masas...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Biogeography; Biomass; Marine molluscs.
Ano: 2010
URL: http://hdl.handle.net/1834/4212

Variación interanual del mesozooplancton en la plataforma bonaerense en primavera: introducción de nuevas metodologías para su análisis
Provedor de dados: 20
Autores: Di Mauro, R.
The distribution and abundance of mesozooplankton (specially copepod, cladoceran and appendicularian species) of the Buenos Aires shelf obtained in spring, during the years 2002, 2003 and 2004, were analysed. A small bongo net provided with 67 and 220 µm meshes, was employed in order to obtain a complete representation of the size spectrum of the mesozooplankton. The analysis included both the traditional optical method and the a new automatic image analysis (ZooImage). The results were related with the oceanographic conditions, which were, in general similar to the mean conditions for the study area. The finer mesh (67 µm) allowed a more accurate estimation of the abundance and biomass of small copepod species ( 1mm total length), producing the tick mesh...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Abundance; Biomass; Annual variations; Fish larvae; Imaging techniques; Oceanographic data; Environmental conditions; Salinity; Temperature; Water masses.
Ano: 2011
URL: http://hdl.handle.net/1834/4204

Variaciones temporales del phylum quetognatos en las estaciones fijas La Libertad y Manta, Ecuador durante el evento El Niño 1997-1998 y años 2002-2003
Provedor de dados: 20
Autores: Naranjo, Ch.
El presente estudio se desarrolló mediante muestreos mensuales de zooplankton en las estaciones fijas La Libertad y Manta localizadas a 10 y 8 millas costa afuera respectivamente. Se analizaron un total de 150 muestras de zooplankton en La Libertad y Manta durante 1997-1998 considerado un evento El Niño extraordinario y en los años 2002-2003, período que presentaron condiciones oceanográficas de inestabilidad. La prueba estadística determinó que existen cambios temporales en los patrones de distribución y abundancia en las especies de Quetognatos, aceptándose la hipótesis nula, el cual estuvo influenciado por las condiciones oceanográficas y época estacional, siendo más notorio en la estación fija La Libertad durante el período en estudio. El índice de...
Tipo: Journal Contribution
Palavras-chave: Temporal variations; Zooplankton; Abundance; Species diversity; Zooplankton; Species diversity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2009
URL: http://hdl.handle.net/1834/3357

Composición y abundancia del macrozooplancton e ictioplancton en el Estrecho Bransfield, durante el verano austral 1998
Provedor de dados: 20
Autores: Ortega, D.
Durante la realización de la VII Expedición Antártica Ecuatoriana, efectuada entre diciembre de 1997 y marzo de 1998. Se realizó un crucero oceanográfico en el Estrecho Bransfield a bordo del Bae/Orión, colectándose muestras de macrozooplancton obtenidas por arrastres oblicuos con redes tipo bongo de 500μ hasta una profundidad de 300 m. Este estudio se efectuó con el fin de conocer la distribución y composición del macrozooplancton e ictioplancton en el Estrecgo Bransfield. La biomasa zooplanctónica, registró la mayor concentración 6 913 org.(1000m3)-1, cercano al área de la plataforma Antártica (Península Antártica), donde la temperatura fue de (-1° C). De los organismos zooplanctónicos identificados, las salpas con 62%, copépodos 9% eufáusidos 8%, fueron...
Tipo: Journal Contribution
Palavras-chave: Composition; Distribution; Abundance; Zooplankton; Ichthyoplankton; Cruises; Distribution; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1998
URL: http://hdl.handle.net/1834/3854

Communautés zooplanctoniques de la lagune de Grand-Lahou (Cote d'Ivoire).
Provedor de dados: 20
Autores: Kouassi, A.M.; N'doua, E.; Adingra, A.A.
Le peuplement zooplanctoniques de la lagune de Grand-Lahou inventorié de janvier à décembre 2004 est riche de 65 taxons regroupés en 4 groupes (Copépodes, Rotifères, Cladocères et un groupe de divers organismes zooplanctoniques) et 3 communautés (continentale, lagunaire et marine).
Tipo: Journal Contribution
Palavras-chave: Zoobenthos; Zooplankton.
Ano: 2008
URL: http://hdl.handle.net/1834/5744

Resultados preliminares sobre zooplancton y su luminiscencia en la región oriental del Mar Caribe
Provedor de dados: 20
Autores: Artiomkin, A. S.; Flilimonov, V. S.; Baldina, E. P.; Greze, V. N.
142 samples of the eastern of the Caribbean Sea were analysed.The study of samples showed that there are not distintions in the differents zones investigated of plankton productivity and that the plankton composition and distribution are monotone in all cross section. The experiment established that thirty species of various zooplankton groups are luminiscent. The maximun of luminiscense occurs at 50 m depth. The development of electronic equipment are considered.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Luminescent organs; Zooplankton; Luminescence.
Ano: 1969
URL: http://hdl.handle.net/1834/5713

Comunidades del plancton en la Caleta Aeolian de la Isla Baltra - Galápagos (Ecuador), durante 2005
Provedor de dados: 20
Autores: Naranjo, Ch.; Tapia, M.E.
El propósito del trabajo es determinar la composición, abundancia de los grupos dominantes del fitoplancton y zooplancton, establecer las especies de Quetognatos y su relación con la temperatura superficial del mar durante marzo de 2005 correspondiente a la época húmeda.
Tipo: Journal Contribution
Palavras-chave: Plankton; Primary production; Biological production; Phytoplankton; Zooplankton; Biomass; Abundance; Community composition; Fish eggs; Surface temperature; Plankton; Primary production; Biological production; Phytoplankton; Zooplankton; Biomass; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_34329; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2007
URL: http://hdl.handle.net/1834/2346

El rol del frente de mareas de Península Valdés en el control de la comunidad zooplanctónica
Provedor de dados: 20
Autores: Derisio, C.
The Península Valdés tidal front was studied in its rol in the control of the spatial distribution, abundance, assemblages, diversity and life histories of the zooplankton community using samples from two oceanographic surveys. Although the front showed in general high zooplankton abundances, highest values, mainly due to the presence of immature stages of copepods, were recorded in the transitional and stratified zones coinciding with highest values of chlorophyll a. The zooplankton groups showed a distinctive spatial distribution across the front. The results showed that this front did not exert any control on zooplankton composition and diversity, but did on the abundance. In the homogeneous zone the harpacticoid copepods were more abundant, followed by...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Ecological associations; Oceanic fronts; Abundance; Species diversity; Hydrography; Vertical migrations; Copepoda; Cladocera; Marine environment.
Ano: 2012
URL: http://hdl.handle.net/1834/4777

Efecto de la predación de Noctiluca scintillans Macartney, Sagitta friderici Ritter-Záhony y larvas de Engraulis anchoita Hubbs-Marini sobre la comunidad planctónica costera bonaerense
Provedor de dados: 20
Autores: Sato, N.E.
Studied the effect of the predation of Noctiluca scintillans, Sagitta friderici and larvae of Engraulis anchoita in planktonic community of the coastal waters off Buenos Aires province from samples obtained of a permanent station EPEA (38°28’ S, 57°41’ W, 48 m depth) from March 2000 through April 2001. The composition of the diet of the three species predators considering appearances quantitative and qualitative was determined. It found that N. scintillans consumed mainly diatoms and copepod eggs. The alimentary index varied between 27.50% and 77.00%. The highest value corresponded to September, 2000. The analyses of the diets of S. friderici and of the larvae of E. anchoita indicated that both consume mainly different stages of development of the same...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Fish larvae; Feeding behaviour; Predation; Seasonal variations; Food organisms; Predator prey interactions; Engraulis anchoita; Noctiluca scintillans; Sagitta friderici; Marine environment.
Ano: 2008
URL: http://hdl.handle.net/1834/4778

Ecología trófica de estadios juveniles de los esciénidos dominantes en el estuario de Bahía Blanca. Pescadilla de red (Cynoscion guatucupa) y corvina rubia (Micropogonias furnieri)
Provedor de dados: 20
Autores: Sardiña, P.
Striped weakfish (Cynoscion guatucupa)and whitemouth croaker(Micropogonias furnieri)are one of the most important coastal resources of Bahia Blanca Estuary (Buenos Aires Prov., Argentina). The aims of this thesis were: 1, to analyze the population and morphological characteristics of the juveniles stages of the striped weakfish and the whitemouth croaker living in Bahia Blanca Estuary; 2, to describe the dietary habits of the juveniles of these two species; 3, to analyze the ontogenetic and seasonal diet changes in both species, and 4, to study the feeding interrelationships between both species as well as the interrelationships between each species and its prey. In view of the mentioned objectives, diet was evaluated taking into account the following...
Tipo: Theses and Dissertations
Palavras-chave: Brackishwater environment; Brackishwater fish; Comparative studies; Feeding behaviour; Trophic relationships; Zooplankton; Juveniles; Feeding behaviour; Zooplankton; Brackishwater environment; Juveniles; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_1050; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 2004
URL: http://hdl.handle.net/1834/2595

Modèle couple dynamique -écologie pour la lagune de Bizerte
Provedor de dados: 20
Autores: Bejaoui, B.; Harzallah, A.; Moussa, M.; Chapelle, A.
This work concerns the development of a three dimensional hydroecological model based on two nutrient elements, nitrogen and phosphorus.The hydrodynamic model is 3D forced by monthly climatic data of NOAA. The ecological model was developed based on two nutrient elements, nitrogen and phosphorus in interaction with the phytoplankton and zooplancton. The ecological model is made up with two compartments, the water column and the sediment layer. Eight state variables are used to characterize the water column and six state variables for the sediment layer. As a first application, the model was tested on the Bizerte Lagoon. A comparison between simulations and observations showed that the model can reproduce with satisfactory way the observations carried out...
Tipo: Journal Contribution
Palavras-chave: Dissolved oxygen; Hydrodynamics; Models; Nutrient cycles; Phytoplankton; Zooplankton.
Ano: 2008
URL: http://hdl.handle.net/1834/4264

Estimación de tasas de ingestión de Mnemiopsis leidyi (Ctenophora: Lobata) en condiciones de laboratorio
Provedor de dados: 20
Autores: Bertelo, M.I.; Giberto, D.A.; Schiariti, A.; Bianca, F.; Suárez, J.; Mianzan, H.W.
The first results in the development of a standardized methodology to estimate Mnemiopsis leidyi intake rates and their impact on fish recruitment are presented. M. leidyi capability to consume lyophilized fish eggs and level of consumption of such type of preys, Artemia nauplii and rotifera were assessed. Although M. leidyi can consume lyophilized fish eggs, intake rates were extremely low, often null and in all cases lower than those estimated for the other types of preys offered. The increase of feeding rate on each prey was proportional to ctenophores size growth. The results observed suggest that consumption of fish eggs would not affect recruitment. However, there is not a uniform methodology in the literature that allows for standardized...
Tipo: Journal Contribution
Palavras-chave: Artificial feeding; Recruitment; Fish eggs; Controlled conditions; Zooplankton.
Ano: 2013
URL: http://hdl.handle.net/1834/5485

Relación fitoplancton-zooplancton en el Pacífico Ecuatorial (Ecuador), durante septiembre 2001
Provedor de dados: 20
Autores: Torres, G.; Mero, M.; Calderón, T.; Franco, V.; Salazar, E.
El presente trabajo es una contribución al conocimiento de la bio-oceanografía del mar ecuatoriano, forma parte del proyecto de Monitoreo de las condiciones oceanográficas en el mar ecuatoriano y su relación con eventos de El Niño, realizadas en el B/I ORION del Instituto Oceanográfico de la Armada (INOCAR) en septiembre-octubre 2001, como un aporte a la comunidad científica.
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Diatoms; Zooplankton; Biological production; Upwelling; Population density; Cruises; Abundance; Geographical distribution; Biological production; Geographical distribution; Phytoplankton; Zooplankton; Population density; Diatoms; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6112; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2004
URL: http://hdl.handle.net/1834/2297

Un système d'indicateurs de durabilité des pêcheries côtières comme outil de gestion intégrée des ressources halieutiques sénégalaises
Provedor de dados: 20
Autores: Thiao, Djiga.
Cette thèse est axée sur une analyse de la durabilité des pêcheries côtières qui aboutit  sur la proposition d’un système d’indicateurs comme  outil de gestion intégrée des ressources halieutiques sénégalaises.  L’objectif est d’encourager  une meilleure gouvernance de ces  systèmes halieutiques et côtiers dont l’exploitation est caractérisée par la complexité, la multiplicité et l’interactivité de plusieurs facteurs écologiques, économiques et sociaux. La stratégie adoptée est fondée sur l’approche systémique à travers  une vision multidimensionnelle et multi-acteurs  s’appuyant  sur le modèle PER (pression-état-réponse).  Le diagnostic  reflète  une détérioration générale de l’état  des écosystèmes côtiers  nécessitant  des mesures d’ajustement de la...
Tipo: Theses and Dissertations
Palavras-chave: Sustainable fishing; Inshore waters; Coastal zone management; Fisheries resources; Ecosystem management; Hydrology; Phytoplankton; Flora; Coastal environment; Sustainable development; Zooplankton; Ecology; Temperature; Salinity; Tourism; Rivers; Upwelling.
Ano: 2009
URL: http://hdl.handle.net/1834/5002

Composición y distribución de la abundancia relativa de zooplancton en el Estrecho Bransfield (Antártica) durante el verano austral de 1987-1988
Provedor de dados: 20
Autores: Arcos, F.; Bonilla, M.A.
En el presente trabajo se analizan cuantitativamente y cualitativamente los componentes del zooplancton colectado en 23 estaciones del Estrecho Bransfield, determinando la distribución de la abundance relativa de cada grupo. Se nota una mayor abundancia de zooplancton al norte del estrecho y un predominio de Copépodos y Eufáusidos; estos últimos fueron recolectados principalmente en estadíos larvarios, y la presencia de gran cantidad de huevos en el extremo sur-oriental del estrecho sugiere un aporte de estos organismos provenientes del mar de Weddell.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Abundance; Distribution records; Antarctic zone; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1989
URL: http://hdl.handle.net/1834/3827

Procesos planctónicos en el Golfo de Guayaquil (Campo Amistad) julio-agosto/2001
Provedor de dados: 20
Autores: Torres,  G.; Calderón, T.; Mero, M.; Franco, V.
This research is part of an environmental monitoring of plankton and its physical and chemical response around the platform located offshore Campo Amistad, near Santa Clara Island, southeast of the Gulf in external Guayaquil. The study was carried out between july 30 and augut 31-2001, onboard the R/V  Orión of the Oceanographic Institute of the Ecuadorian Navy. The chlorophyll "a" biomass presented values between 0.6 and 1.52 mg/m3 in surface waters, with averages of 1.07 to 0.99 mg/m3 (10 m), 0.79 (20 m) and 0.58 (30 m) mg/m3. The larger amounts of biomass and daily variability were found in the northern part of the platform, while the opposite trend was observed in its western area. One hundred and three phytoplankton species were identified, with...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Chlorophylls; Biomass; Zooplankton; Environmental assessment; Producttion platforms; Nutrients (mineral).
Ano: 2003
URL: http://hdl.handle.net/1834/5762

Distribución del plancton a mesoescala en un área de reproducción de la anchoíta en la plataforma bonaerense
Provedor de dados: 20
Autores: Akselman, R.; Carreto, J.I.; Ramirez, F.C.
In order to determine the distribution patterns of phytoplanktonic and zooplanktonic species that constitute the main food of the argentine anchovy (Engraulis anchoita), a study was made within a coastal spawning area on meso-scaled space (approximately 7 miles between stations). It was observed the predominacne of the copepod Oithona helgolandica and copepodites stages of other small-sized species, thus inferring the preponderance of nauplii stages which constitute the main food of early anchovy larvae. A high spatial heterogeneity was found in the distrtibution of both phytoplanktonic and zooplanktonic communities. Phytoplankton showed a patchiness distribution both in horizontal and vertical directions. Diatoms, dinoflagellates and coccolithophoirids...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Trophic relationships; Population density; Horizontal distribution; Species diversity; Phytoplankton; Zooplankton; Species diversity; Population density; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 1986
URL: http://hdl.handle.net/1834/2034

Estudio de la composición específica, abundancia y distribución espacial del microzooplancton (protozoos y micrometazoos) en el estuario del Río de la Plata (Argentina-Uruguay)
Provedor de dados: 20
Autores: Kogan, M.
Species composition, abundance and spatial distribution of microzooplancton (20-200 km)from the Río de la Plata Estuary, Argentina-Uruguay, SW Atlantic (36°S 56°W)were studied from samples collected during two oceanographic cruises at the end of austral spring (in 1999 and 2001)across a gradient from fluvial to coastal waters (200 km). Heterotrophic dinoflagellates, aloricate ciliates, tintinnids, radiolarians, rotifers and copepod nauplii were found. More than 110 taxa were registered, 35 were new records for the area. Three microzooplanktonic assemblages were distinguished using cluster analysis. Species and groups spatial distribution (horizontal and vertical)was related to the distribution of the maxima gradients (salinity, turbidity, etc.), estuarine...
Tipo: Theses and Dissertations
Palavras-chave: Zooplankton; Abundance; Geographical distribution; Salinity stratification; Ecological associations; Brackishwater environment; Community composition; Vertical distribution; Zooplankton; Geographical distribution; Ecological associations; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32845; Http://aims.fao.org/aos/agrovoc/c_1050.
Ano: 2005
URL: http://hdl.handle.net/1834/2598

Evaluation de la contamination chimique par les métaux traces (Cd, Pb, Hg et Zn) du zooplancton et de la sardinelle &lt;Sardinella aurita&gt;dans le golfe de tunis
Provedor de dados: 20
Autores: Ennouri, R.; Chouba, L.; Kraeim, M.M.
La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis.  Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine.  Pour le Pb, le Hg et le Zn,  les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que  le Cd est concentré davantage au niveau du foie. Les concentrations...
Tipo: Journal Contribution
Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Bioaccumulation; Zooplankton; Sardinella aurita; Trace elements; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_7834.
Ano: 2008
URL: http://hdl.handle.net/1834/3707

Micromundo marino
Provedor de dados: 20
Autores: Montolio, M.
De forma amena y muy didáctica se aborda la historia, la distribución, la diversidad, la supervivencia, la colecta de especies del plancton. Se incluyen ¿ sabías qué ? para mostrar los aspectos más interesantes y para comprobar conocimientos los juegos didácticos.
Tipo: Book
Palavras-chave: Zooplankton; Phytoplankton; Plankton; Nannoplankton; Zooplankton; Phytoplankton; Plankton; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 2005
URL: http://hdl.handle.net/1834/2081

Estudio de las comunidades del fitoplancton y zooplancton en Monteverde, Península de Santa Elena, Ecuador durante noviembre de 2006
Provedor de dados: 20
Autores: Tapia, M.E.; Naranjo, Ch.
El presente estudio se efectuó frente a la localidad de Monteverde, Península  de Santa Elena, monitoreándose un total de 15 estaciones durante los estados de marea de flujo y reflujo en noviembre de 2006. Las mayores concentraciones de clorofila a: Se observó en la estación 9 en la capa superficial con valores de 0.90  mg/m3 determinándose como un área de mayor productividad y la menor concentración se registró en la estación 4 con valor de 0.10 mg/m3 durante la fase de flujo. En la comunidad fitoplanctónica se determinó dos áreas de mayor diversidad y abundancia de especies: La primera se observó en las estaciones 4 y 6 durante flujo registrándose la mayor abundancia relativa, la segunda corresponde a las estaciones 10 y 11 en reflujo. Se destaca la...
Tipo: Journal Contribution
Palavras-chave: Chlorophylls; Phytoplankton; Zooplankton; Biomass; Aquatic communities; Phytoplankton; Zooplankton; Biomass; Aquatic communities; Chlorophylls; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_553; Http://aims.fao.org/aos/agrovoc/c_1577.
Ano: 2009
URL: http://hdl.handle.net/1834/3348

Monitoreo de las condiciones bio-oceanográficas en la I y II Regiones, año 2002
Provedor de dados: 20
Autores: Braun, M.; Reyes, H.; Valenzuela, V.; Castillo, J.; Osses, J.; Catasti, V.
El presente documento corresponde al pre-informe final del Proyecto FIP 2002-01 Monitoreo de las condiciones bio-oceanográficas fisico-químicas; la distribución geográfica y abundancia de huevos y larvas de los recursos anchoveta, sardina, jurel y caballa y su variabilidad estacional; y la distribución de los recursos detectados por medio de técnicas hidroacústicas en la I y II Regiones, registradas durante los cruceros estacionales de monitoreo MOBIO 0205, MOBIO 0209, MOBIO 0212 y MOBIO 301, realizados en otoño, invierno y primavera de 2002 y verano de 2003 respectivamente. Entrega además la serie de tiempo mensual generada producto de la ocupación de las estaciones costeras de vigilancia localizadas frente a los puertos de Mejillones, Iquique y Arica...
Tipo: Report
Palavras-chave: Physical oceanography; Water temperature; Salinity; Dissolved oxygen; Marine ecology; Seasonal variations; Echo surveys; Geographical distribution; Zooplankton; Physical oceanography; Water temperature; Dissolved oxygen; Geographical distribution; Zooplankton; Salinity; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2004
URL: http://hdl.handle.net/1834/1728

Caracterización cuantitativa y cualitativa del zooplancton en la Ensenada de la Broa
Provedor de dados: 20
Autores: González, E.; Alfonso, I.
Se presentan los resultados obtenidos de una caracterización cuantitativa y cualitativa del zooplancton  de la Ensenada de la Broa durante  9 cruceros de investigación, efectuados en el periodo de abril 1979 a febrero de 1980.  Los meses de junio a julio resultaron los de mayor abundancia, con densidades promedios de de más de 3000 organismos por m¯ ³. Se reporta diferencia significativa entre las medias de concentración de organismos correspondientes a los meses: diciembre, enero, febrero y el resto de los meses. Se señala a la zona más productiva de la Ensenada de la  Broa a la comprendida entre Playa Rosario y la Tasajera. Con más de 2 700 org./ m¯ ³.
Tipo: Journal Contribution
Palavras-chave: Zooplankton.
Ano: 1982
URL: http://hdl.handle.net/1834/4871

on the distribution of zooplankton assemblaces in abu-qir bay, alexandria, egypt
Provedor de dados: 20
Autores: Zakaria, H.Y.
Abu Qir Bay is a shallow semi-circular basin lying 35 Km east of Alexandria city. The bay is facing the problem of pollution which discharged into the bay from different sources; El-Tabia Pumping Station (TPS), the outlet of Idku Lake and the Rosetta mouth of the Nile River. Quantitative and qualitative studies of zooplankton community in Abu Qir Bay were performed seasonally during 2004. Fourteen stations were selected to represent the different habitats in the bay.The seasonal variations of zooplankton standing stock in Abu Qir Bay indicated that, the highest count (average 87.1x103 ind/m3) occurred during spring, while the lowest (average 44.2x103 ind/m3) was recorded in summer. The average zooplankton count during the period of study amounted to...
Tipo: Journal Contribution
Palavras-chave: Field Study; Zooplankton; Coastal waters; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2007
URL: http://hdl.handle.net/1834/1900

El zooplancton de las Islas Galápagos
Provedor de dados: 20
Autores: Bonilla, D.
El presente trabajo es el resultado de un análisis cuali-cualitativo de 84 muestras de plancton colectadas en aguas costeras (10.-0 m de profundidad) en diez localidades de las Islas Galápagos entre Agosto de 1975 - Julio de 1976. Se da a conocer 29 grupos de organismos del zooplancton, determinándose que los grupos dominantes en las estaciones objeto de este estudio y en orden decreciente de su abundancia fueron: Copépodos, Pterópodos, Apendiculares, Quetognatos, Decápodos y Huevos de Peces. Se hacen evaluaciones del volumen de plancton y de la cantidad de organismos del zooplancton. Se detrmina que la distribución del zooplancton fue poco homogénea en las localidades estudiadas. mayores concentraciones se registraron hacia la parte central del...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Coastal waters; Geographical distribution; Abundance; Zooplankton; Geographical distribution; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1983
URL: http://hdl.handle.net/1834/2120

Variación de la población del ictioplancton en el Pacífico Sur Oriental durante diciembre de 1997
Provedor de dados: 20
Autores: Ortega, D.
Uno de los principales objetivos de esta investigación es contribuir al estudio del ictioplancton y zooplancton durante el evento El Niño 1997 en el Pacífico Sur Oriental y a la vez relacionar la abundancia, migración y distribución de los diferentes grupos de organismos con los parámetros de temperatura y salinidad, con respecto a la variación de la población del ictioplancton
Tipo: Journal Contribution
Palavras-chave: Ichthyoplankton; Zooplankton; El Nino phenomena; Geographical distribution; Environmental factors; Population dynamics; Fish eggs; Fish larvae; Geographical distribution; Zooplankton; Environmental factors; Population dynamics; Fish larvae.
Ano: 1998
URL: http://hdl.handle.net/1834/2291

Composición del plancton en la Puntilla Santa Elena durante agosto 2002 (Ecuador)
Provedor de dados: 20
Autores: Torres, G.; Calderón, G.; Franco, V.; Cedeño, E.; Calderón, T.; Salazar, E.
Esta investigación comprende los estudios del fitoplancton-zooplancton-ictioplancton, realizados en tres sitios de la Península Santa Elena durante agosto 2002, área designada para la proyección de "Arrecife Artificial de las Fuerzas Militares del Ecuador": un avión, barco y tanque de guerra, estructuras artificiales consideradas como basura chatarra (de gran tamaño), que serían recicladas para la bio-exploración artificiales hacia la seguridad de los recursos marinos del Ecuador. En el Estudio Ambiental se describen las consideraciones necesarias de carácter multidisciplinario (EIA-INOCAR, 2002).
Tipo: Journal Contribution
Palavras-chave: Biological production; Artificial reefs; Plankton; Zooplankton; Phytoplankton; Ichthyoplankton; Biological production; Plankton; Zooplankton; Phytoplankton; Artificial reefs; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_25395.
Ano: 2004
URL: http://hdl.handle.net/1834/2343

Results of the Environmental Impact Assessment for the Saltpond Offshore Programme  -Plankton Baseline Study
Provedor de dados: 20
Autores: Yaqub, B.H.
A report on plankton baseline studies conducted in the Saltpond Oil Field, Ghana.
Tipo: Report
Palavras-chave: Phytoplankton; Zooplankton; Plankton; Ichthyoplankton; Offshore; Salt water; EIA (environmental impact assessment); Salt water; Plankton.
Ano: 2013
URL: http://hdl.handle.net/1834/5326

Interpretation of particle spectra of electronic counters by microscopical methods
Provedor de dados: 27
Autores: Bakker, C.; Prins, T.C.; Tackx, M.L.M.
1. Using monocultures or single species dominated natural phytoplankton, cell counts and volume estimations obtained by visual and electronic methods show reasonable agreement.Calibration seems possible (Figs.1-2).2. Further examples given (Fig. 3-4) show that microscopical identification of the volume peaks in electronic counter spectra of natural seston is not quite simple. Phytoplankton peaks may not be detected in the Counter spectrum. Shifts of Counter peaks to the left side of the visual spectrum may be found when cylindrical, elongated or needle- like phytoplankton dominate the sample.3. Both visual and electronic methods include potentially large errors. Possibly particle volume is either overestimated by the microscope and / or underestimated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Detritus; Grazing; Measuring devices; Particle counters; Particle size; Phytoplankton; Zooplankton.
Ano: 1985
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3195

Calculations of results in grazing experiments using the counting method
Provedor de dados: 27
Autores: Tackx, M.L.M.; Van de Vrie, E.M.
Different formulae used in the literature for calculation of ingestion rates are reviewed. Their applicability is discussed in relation to two criteria: the occurrence of saturation of the feeding and/or growth of the food particles. It is shown by simulations that the differences in results obtained by calculating ingestion following a linear or an exponential model are restricted to a few percent. Calculation of ingestion rates by substantial over- or underestimation depending on the growth constant of the food particles and the grazing time.The formula I = Vk(C&lt;sub&gt;zt&lt;/sub&gt;C&lt;sub&gt;zo&lt;/sub&gt;e&lt;sup&gt;kt&lt;/sup&gt;)/N(I-e&lt;sup&gt;kt&lt;/sup&gt;) is proposed for the calculation of ingestion rates under saturated circumstances.It...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food intake; Food intake; Grazing; Ingestion; Mathematical analysis; Measuring devices; Phytoplankton; Zooplankton.
Ano: 1985
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3212

Transfer of seston to zooplankton in marine ecosystems
Provedor de dados: 27
Autores: Tackx, M.
When considering zooplankton feeding as one of the pathways involved in the transfer of substances in marine ecosystems, it is important to study the composition and size distribution of the seston: firstly, the elements in which one is interested may be associated with different types and sizes of particles; secondly, particle size and composition are important factors in relation t o the feeding process of the zooplankton itself. High speed cinematographic studies have recently revealed that copepods use two different mechanisms for feeding. Small particles (&lt; 12 pm) are collected by continuous low amplitude movements of the second maxillae and combing of the appendages. Larger particles are detected and collected individually by means of a specific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecosystems; Seston; Zooplankton.
Ano: 1984
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3273

Plankton size distributions and trophic relations before and after the construction of the storm-surge barrier in the Oosterschelde estuary
Provedor de dados: 27
Autores: Tackx, M.L.M.; Herman, P.M.J.; Van Rijswijk, P.; Vink, M.; Bakker, C.
Phytoplankton and zooplankton biomass distributions were calculated on a carbon basis for the inland part of the Oosterschelde, in the period before (1983), during (1984, 1986) and after (1987, 1988) the construction of the storm-surge barrier. In all years studied, both phytoplankton and zooplankton distributions are very irregular, and little consistent patterns emerge. The data were used to test the model of Sheldon et al. (1977). The observed standing stock ratios of zooplankton to phytoplankton agree with the model predictions in 1983, and are slightly higher during the period 1984-1987. In 1988, the model predictions are very different from the observed values, because of important changes in the zooplankton species abundance occurring in this year.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Particles; Particles; Particles; Plankton; Size distribution; Spectra; Zooplankton; Netherlands.
Ano: 1994
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2675

Selection of bacteria enhancing the growth rate of axenically hatched rotifers (&lt;i&gt;Brachionus plicatilis&lt;/i&gt;)
Provedor de dados: 27
Autores: Rombaut, G.; Dhert, P.; Vandenberghe, J.; Verschuere, L.; Sorgeloos, P.; Verstraete, W.
The effect of bacterial strains on the growth rate of rotifers, Brachionus plicatilis, was determined under monoxenic conditions. The first objective was to obtain sterile rotifer cultures starting from rotifer resting eggs using merthiolate or glutaraldehyde as disinfectant. Sterile rotifer cultures were obtained, without affecting the hatching ability of the resting eggs, when 0.05 µl/l glutaraldehyde was used. This disinfection procedure was used to examine the effect of 20 bacterial strains, isolated from well-performing live-feed production systems, on the population growth rate of rotifers cultured under monoxenic conditions. Five out of the 20 bacterial strains tested were able to improve significantly the asexual reproduction of rotifers. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Aquaculture techniques; Bacterial diseases; Disease transmission; Disinfection; Hatching; Zooplankton; Zooplankton culture; Brachionus plicatilis; Rotifera.
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4030

The use of biomarkers in &lt;i&gt;Daphnia magna&lt;/i&gt; testing: 3. Rapid toxicity testing of pure chemicals and sediment pore waters using ingestion and digestive enzyme activity
Provedor de dados: 27
Autores: De Coen, W.M.; Vangheluwe, M.L.; Janssen, C.R.
In this study, 4 rapid (90 min) toxicity tests were developed using ingestion and digestive enzyme activity of &lt;i&gt;Daphnia magna&lt;/i&gt; juveniles. Ingestion activity was assessed using fluorescent labelled latex micro-beads and digestive enzyme activity (trypsin, beta-galactosidase and esterase) was measured in homogenates using chromogenic (N-benzoyl-L-arginine-4-nitroanilide) and fluorogenic (4-methylumbelliferyl-B-D-galactoside and fluorescein diacetate) substrates.All assays and toxicity endpoints were evaluated for their potential use as routine toxicity testing tools for pure chemicals and sediment pore waters. The observed high correlation coefficients (r(2)&gt;0.9) between the short-term toxicity values and the acute toxicity endpoint (24h...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assimilation; Assimilation; Exposure; Exposure; Filtration; Respiration; Zooplankton; Daphnia magna; Rotifera.
Ano: 1998
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7488

A simple method for subsampling zooplankton
Provedor de dados: 27
Autores: Persoone, G.
A simple and accurate method for subsampling zooplankton suspensions is described for which one only needs graduated plastic syringes and penicillin vials with a rubber stopper.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sampling; Sampling methods; Zooplankton.
Ano: 1972
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3455

Seasonal variability of planktonic copepods (Copepoda: Crustacea) in a tropical estuarine region in Brazil
Provedor de dados: 103
Autores: Dias,Cristina de Oliveira; Araujo,Adriana Valente de; Bonecker,Sérgio Luiz Costa.
The Caravelas River estuary and adjacent coastal region were studied during the rainy and dry seasons of 2003-2004 to assess the copepod community structure. Abiotic and biotic parameters were measured, and the total density, frequency and percentage of copepod taxa were determined for each sampling period. Copepod densities showed significant differences between sampling periods, with higher densities in the rainy seasons (Mean: 90,941.80 ind.m-3; S.D.: 26,364.79). The sampling stations located to the north and south, in the coastal region adjacent to the Caravelas River estuary presented the lowest copepod density values. The copepod assemblage was composed mainly of estuarine and estuarine/coastal copepods. The seasonal variations in temperature and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal region; Northeast Brazil; Seasonal variability; Tropical zone; Zooplankton.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400015

The copepod assemblage (Copepoda: Crustacea) on the inner continental shelf adjacent to Camamu Bay, northeast Brazil
Provedor de dados: 103
Autores: Dias,Cristina de Oliveira; Bonecker,Sérgio Luiz Costa.
The copepod assemblage on the inner continental shelf adjacent to the coastal system of Camamu Bay (state of Bahia, Brazil) is described in relation to hydrographic conditions, during the wet and dry seasons of 2004. The zooplankton samples were obtained in vertical tows using a net with 200 µm mesh size. Temperature and salinity were measured, and the total density, frequency and percentage occurrence of the copepod taxa were determined for each sampling period. The highest densities were observed at the entrance of Camamu Bay (up to 7.473 ind.m-3), and the lowest on the adjacent inner continental shelf south of Camamu Bay (less than 500 ind.m-3). A total of 57 copepod taxa were identified. Paracalanus quasimodo Bowman, 1971, Subeucalanus pileatus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal region; Spatial-temporal variation; Tropical zone; Zooplankton.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400007

Horizontal and vertical distribution of mesozooplankton species richness and composition down to 2,300 m in the southwest Atlantic Ocean
Provedor de dados: 103
Autores: Bonecker,Sérgio L.C.; Araujo,Adriana V. de; Carvalho,Pedro F. de; Dias,Cristina de O.; Fernandes,Luiz F.L.; Migotto,Alvaro E.; Oliveira,Otto M.P. de.
We describe the species richness, distribution and composition of mesozooplankton over the continental shelf and slope, and in the water masses in the Campos Basin, southwest Atlantic Ocean. We analyzed the mesozooplankton from two oceanographic cruises (rainy and dry seasons, 2009) with samples taken in five different water masses from the surface to 2,300 m depth. In the Subsurface Water (SS), in both sampling periods, more species were recorded over the slope (rainy: 100; dry: 128) than the continental shelf (rainy: 97; dry: 104). Over the slope, species richness decreased with increasing depth: the highest values were observed in the South Atlantic Central Water (SACW), and the lowest values in the North Atlantic Deep Water (NADW), in both sampling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deep sea; Diversity; Southeastern Brazil; Zooplankton.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000500005

Comparative morphology of the first zoea of twelve brachyuran species (Crustacea: Decapoda) from the Amazon region
Provedor de dados: 103
Autores: Souza,Adelson S. de; Costa,Rauquírio M. da; Abrunhosa,Fernando A.
The laboratory-hatched first zoeal stage of twelve brachyuran species collected in the estuarine area of the Caeté River in the Amazonian region are described and illustrated in the present study: P. americanus Saussure, 1857, Eurytium limosum (Say, 1818), Sesarma curacaoense De Man, 1892, S. rectum Randall, 1840, Armases rubripes (Rathbun, 1897), Aratus pisonii (H. Milne Edwards, 1837), Ocypode quadrata (Fabricius, 1787), Uca rapax (Smith, 1870), U. maracoani (Latreille, 1802), U. thayeri Rathbun, 1900, Ucides cordatus (Linnaeus, 1763) and Pachygrapsus gracilis (Saussure, 1858). Through intraspecific comparisons of the respective larval stage, an identification key was generated and provided. Most of the studied species presented morphological differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapod crabs; Identification; Larval morphology; Zooplankton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300004

Species assemblages of zooplanktonic crustaceans in mountain shallow ponds of Chile (Parque Cañi)
Provedor de dados: 103
Autores: Ríos,Patricio De los; Roa,Guido.
Even though the Chilean lakes are characterized by their oligotrophy, a transition from oligotrophy to mesotrophy, due human intervention, has been reported in some lakes. Nevertheless, there are still some pristine and unpolluted small lakes and ponds in mountain zones, free of human intervention and surrounded by native forests. Nine unpolluted, oligotrophic and pristine water bodies located in Cañi Park, a mountain zone with altitudes between 1000 to 1500 m a.s.l and forests where Nothofagus dombeyi, N. pumilio and Araucaria araucana predominate, were studied. For each sampled lake, zooplankton was collected and environmental parameters were obtained (conductivity, total dissolved solids, and chlorophyll concentration). A null model of species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Boeckella gracilis; Null model; Oligotrophy; Zooplankton.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000100012

Estimating cyclopoid copepod species richness and geographical distribution (Crustacea) across a large hydrographical basin: comparing between samples from water column (plankton) and macrophyte stands
Provedor de dados: 103
Autores: Perbiche-Neves,Gilmar; Rocha,Carlos E.F. da; Nogueira,Marcos G.
Species richness and geographical distribution of Cyclopoida freshwater copepods were analyzed along the "La Plata" River basin. Ninety-six samples were taken from 24 sampling sites, twelve sites for zooplankton in open waters and twelve sites for zooplankton within macrophyte stands, including reservoirs and lotic stretches. There were, on average, three species per sample in the plankton compared to five per sample in macrophytes. Six species were exclusive to the plankton, 10 to macrophyte stands, and 17 were common to both. Only one species was found in similar proportions in plankton and macrophytes, while five species were widely found in plankton, and thirteen in macrophytes. The distinction between species from open water zooplankton and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: La Plata River basin; Reservoirs; Rivers; Zooplankton.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000300005

Larval and adult density of the porcellanid crab Petrolisthes armatus (Anomura: Porcellanidae) in an Amazon estuary, northern Brazil
Provedor de dados: 103
Autores: Oliveira,Danielly Brito de; Silva,Dalila Costa; Martinelli-Lemos,Jussara Moretto.
Petrolisthes armatus (Gibbes, 1850) is a porcellanid crab with a wide geographical distribution. In the present study we analyzed variations in the abundance of P. armatus adults and larvae over an annual cycle in the Marapanim estuary of the Amazon coastal zone, in the northeastern portion of the state of Pará, Brazil. Particularly, we focused on the presence of ovigerous females and timing of larval release, with the aim of elucidating reproductive patterns in a tropical estuarine system. The mean density of P. armatus larvae (zoea I and II) correlated positively with the salinity of the shallow waters of the estuary, whereas the abundance of adults correlated with the salinity registered in water samples collected from the benthic environment. There was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapoda; Macrobenthos; Reproduction; Zooplankton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000600002

Depth-selection patterns and diel vertical migration of Daphnia ambigua (Crustacea: Cladocera) in lake El Plateado
Provedor de dados: 97
Autores: RAMOS-JILIBERTO,RODRIGO; ZÚÑIGA,LUIS R.
Eutrophic temperate and sub-tropical lakes often exhibit a marked vertical structure during the warm season that involves important spatial differences of physical, chemical and biological variables. Therefore, zooplankton is exposed to a highly heterogeneous environment in the vertical dimension. In this work, We analyze the depth-distribution of the cladoceran Daphnia ambigua in the eutrophic, monomictic lake El Plateado at midday and midnight, along with its relationship with the vertical distribution of water temperature and dissolved oxygen concentration. We also attempt to define whether or not this population exhibits a diel vertical migration. The results show significant changes in the day/night vertical distribution of D. ambigua during its...
Tipo: Journal article
Palavras-chave: Chile; Daphnia; Depth-selection; Diel vertical migration; Zooplankton.
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000300007

Parent-to-offspring transfer of sublethal effects of copper exposure: Metabolic rate and life-history traits of Daphnia
Provedor de dados: 97
Autores: FERNÁNDEZ-GONZÁLEZ,MAURICIO A; GONZÁLEZ-BARRIENTOS,JAVIER; CARTER,MAURICIO J; RAMOS-JILIBERTO,RODRIGO.
In ecological communities, pollution driven perturbations exert immediate effects on sensitive individuals, but these effects may be transmitted among interacting organisms and spread over the community through several paths. This makes the assessment and prediction of ecological consequences of pollution difficult. The propagation of perturbation effects among organisms can be horizontal among organisms that coexist in space and time, and vertical among organism that belong to different generations. The latter process is poorly understood, in particular in planktonic organisms facing metal pollution. In this study we evaluate the vertical transfer of effects driven by sublethal copper stress on the heartbeat rate, somatic growth and fertility of Daphnia...
Tipo: Journal article
Palavras-chave: Ecotoxicology; Heartbeat rate; Maternal effects; Transgenerational effects; Zooplankton.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200005

Live and formulated diet evaluation through initial growth and survival of jundiá larvae, Rhamdia quelen
Provedor de dados: 63
Autores: Carneiro,Paulo César Falanghe; Mikos,Jorge Daniel; Schorer,Marianne; Oliveira Filho,Paulo Roberto Campagnoli; Bendhack,Fabiano.
Live diet (LD) dependence and the lack of suitable formulated diets (FD) are major constraints for the expansion of larviculture of many fish species. The low digestibility and nutritional quality of FD are factors that might explain their failure as a stand-alone starter food. To determine whether FD in combination with LD (zooplankton) may efficiently increase larval growth and survival of jundiá (Rhamdia quelen), when compared to fish fed by either types of diet alone, jundiá larvae (5.57 mm; 1.41 mg) were initially stocked into 12 10-L aquaria (100 larvae per aquarium). Replicate groups (n=4) were fed ad libitum one of the three diets for 20 (when fed FD) or 48 days (when fed LD or the combined diets). Larvae fed FD alone presented significantly lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed; Zooplankton; Nutrition; Silver catfish.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400002

A report on the marine cladoceran Evadne spinifera Müller (Crustacea, Branchiopoda) in Guanabara Bay, Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Marazzo,Andrea; Valentin,Jean L.
This note relates the occurrence of Evadne spinifera Müller, 1867 (Crustacea, Branchiopoda) in Guanabara Bay, Rio de Janeiro State, Brazil. The samples were obtained by vertical tows with a 200µm mesh-size conical net at different times over a four day period in September, 1995. Evadne spinifera densities was always low.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cladocera; Evadne spinifera; Zooplankton; Guanabara Bay; Brazil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400017

Record of Pleopis schmackeri (Poppe) (Branchiopoda, Onychopoda) in the Guanabara Bay, Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Marazzo,Andrea.
A first recordof Pleopis schmackeri (Poppe,1889) (Branchiopoda, Onychopoda) in the Guanabara Bay, Rio de Janeiro, Brazilis described.This marine cladoceran species occurred in zooplanktonic samples obtained on June 26, 2000, with densities ? 4.0 ind.m-3. Its presence may berelated with inflow of coastal waters to the bay.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Cladocera; Pleopis schmackeri; Zooplankton; Guanabara Bay; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500027

Diel changes in embryonic maturation in two species of marine cladocerans in Guanabara Bay, Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Marazzo,Andrea; Valentin,Jean L.
Two species of marine cladocerans, Penilia avirostris Dana, 1852 and Evadne tergestina Claus, 1877 were collected in thirteen samples at a fixed station in Guanabara Bay, Rio de Janeiro (30-meter depth) by means of vertical tows with a 200 µm mesh size net at different times from September 12th to 15th, 1995. The parthenogenetic females of Evadne tergestina bore mature embryos (with pigmented eye) only in the samples collected at night, whereas Penilia avirostris at any time of day. This phenomenon was interpreted based on the greater visibility of the Evadne tergestina brood: one of the benefits for embryo maturing during the darkness period would be a decrease of predation on gravid females.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cladocera; Penilia avirostris; Evadne tergestina; Zooplankton; Embryos; Guanabara Bay; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500033

A NEW SPECIES OF Halicyclops (Copepoda, Cyclopoida, Halicyclopinae) FROM AN ESTUARINE SYSTEM OF THE CARIBBEAN COAST OF COLOMBIA
Provedor de dados: 37
Autores: FUENTES-REINÉS,Juan M.; SUÁREZ-MORALES,Eduardo.
ABSTRACT Plankton samples obtained from the Ciénaga Grande de Santa Marta, an extensive estuarine system in northern Colombia, yielded adult male and female specimens of an undescribed halicyclopine cyclopid copepod of the genus Halicyclops. Cyclopid copepods are frequently found in freshwater and transitional habitats. Members of the subfamily Halicyclopinae are chiefly brackish water forms with a few freshwater species. The new species described herein is assignable to the group of species "F" of Halicyclops (sensu Pesce, 2018) with a 2333 exopodal spine formula. Currently, this group contains five species and one subspecies. Halicyclopsgutierrezi sp. n. can be distinguished from its known congeners by the absence of an anal operculum, the relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microcrustaceans; Mangroves; Microcrustaceans; Shallow water; Taxonomy; Zooplankton.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000100014

COMPLEMENTARY DESCRIPTION AND RECORD OF Neocyclops ferrarii (Cyclopidae: Halicyclopinae) FROM NORTHERN COLOMBIA
Provedor de dados: 37
Autores: FUENTES-REINÉS,Juan Manuel; SUÁREZ-MORALES,Eduardo.
ABSTRACT The interstitial cyclopoid copepod Neocyclops ferrarii Rocha, 1995 was found in samples obtained from littoral areas of Rodadero Bay, northern Colombia. The specimens from Colombia share the diagnostic features of N. ferrarii presented in the original description. However, the Colombian specimens show some degree of variation with respect to the type material in: 1) the number of teeth in the labrum; 2) the length of outer exopodal spine on female leg 5; 3) the relative length of the mandibular palp setae; 4) length/width ratio of caudal rami; 5) the length ratio of caudal setae VI/III; 6) the length ratio of caudal setae VII/VI; 7) the male body size; 8) the male caudal rami length/width ratio; 9) This is the second record of this species after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal copepods; Caribbean Sea; Distribution; Zooplankton.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100006

Species composition of testate amoebae in Lake Monte Alegre, Ribeirão Preto, SP, Brazil
Provedor de dados: 3
Autores: Mousinho, Lucas Pessanha; Silva, Mariana Lessa Carneiro da; Arrieira, Rodrigo Leite; Schwind, Leilane Talita Fatoreto.
We aimed to perform the first survey of testate amoebae community composition in Lake Monte Alegre at São Paulo state, and contribute to mitigate the taxonomic impediment regarding the diversity of testate amoebae in Brazil. Samplings were performed in 20 sampling sites within the lake, in the limnetic and littoral regions in April 2015, using a 58 µm-meshplankton net. We identified 20 taxa of testate amoebae belonging to four families: Arcellidae (8 taxa), Centropyxidae (4 taxa), Difflugiidae (7 taxa) and Lesquereusiidae (2 taxa). The littoral region showed the highest number of taxa (n = 20), whereas in the limnetic region 11 taxa were registered. Therefore, our results evidenced the importance of testate amoebae in aquatic systems, and that further...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Biológicas/Taxonomia protozoa; Species richness; Zooplankton; Taxonomy. Ecologia.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36768

Geographical spread of the invasive species Kellicottia longispina (Kellicott, 1879) and K. bostoniensis (Rousselet, 1908): A scientometric approach
Provedor de dados: 3
Autores: Bomfim, Francieli de Fátima; Mantovano, Tatiane; Schwind, Leilane Talita Fatoreto; Palazzo, Fabiana; Bonecker, Claudia Costa; Lansac-Tôha, Fábio Amodêo.
Processes related to biological invasion of inland waters have become a major issue due to the increasing number of cases associated with the potential effects of invasions. Kellicottia bostoniensis and K. longispina are rotifer species originating from North America and have become invasive in several continents. In this sense, this study carried out a scientometric analysis to analyze the geographical distribution and identify patterns of occurrence as well as to fill gaps on the knowledge of these species. The survey was based on articles indexed in databases from 1896 to 2014. There is a greater scientific knowledge of these species in the temperate region, and these are present in many different environments. In Brazil, there is a very small number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia de Ambientes Aquáticos; Ecologia de Zooplâncton; Ecologia de rotíferos Rotifera; Zooplankton; Dispersal potential; Time trend Ecologia.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28252

The first occurrence of the Order Mormonilloida (Copepoda) in the Tropical Southwest Atlantic Ocean
Provedor de dados: 42
Autores: MELO,PEDRO AUGUSTO M.C.; MELO JÚNIOR,MAURO DE; ARAÚJO,MOACYR; NEUMANN-LEITÃO,SIGRID.
This communication is the first report of the occurrence of the order Mormonilloida (Mormonilla phasma) in the tropical Southwestern Atlantic Ocean. Female individuals were found in surface waters from the shelf break state of Rio Grande do Norte (Northeastern Brazil) and between depths of 60 and 100 m in the epipelagic layer around the St. Peter and St. Paul Archipelago (equatorial Atlantic). This finding extends the vertical limits for this species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copepod; Equatorial; Mormonilloida; Mormonilla phasma; Oceanic island; Zooplankton.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100233

Euphausiacea diversity in a trans-oceanic transect through the South Atlantic Ocean: the first Atlantic record of Thysanopoda astylata Brinton, 1975
Provedor de dados: 42
Autores: MUXAGATA,ERIK; BARBOSA,CARLA N.; AGOSTINI,VANESSA O.
Abstract: ﻿Information about euphausiids in central South Atlantic Ocean is scarce; hence, we investigated species composition and distribution of euphausiids along a longitudinal transect in this region, with an emphasis on Thysanopoda. Zooplankton samples were collected from 44 stations during the first Transatlantic Commission (Brazil–Africa). Euphausiids comprised 21,390 individuals across larval stages (nauplius, calyptopis, and furcilia) and adults. Furcilia and adults were classified to species level when possible, with a total of 19 identified species. O﻿verall, Euphausia species frequency of occurrence and abundance were highest in samples collected near the African coast, while Thysanopada species dominated near the Brazilian coast. Of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euphausiids; South Atlantic; Thysanopoda astylata; Zooplankton.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100621

Can nearby eutrophic reservoirs sustain a differentiated biodiversity of planktonic microcrustaceans in a tropical semiarid basin?
Provedor de dados: 42
Autores: DINIZ,LEIDIANE P.; MELO-JÚNIOR,MAURO DE.
ABSTRACT This paper aims to compare alpha and beta diversities of planktonic microcrustaceans from three reservoirs located nearby in a tropical semiarid basin. Our hypothesis was that alpha and beta diversities of the community are different, although the ecosystems are located close to each other. We carried out two sampling campaigns: dry and rainy seasons. The sampling of microcrustaceans and environmental variables (dissolved oxygen, chlorophyll a and nutrient) was performed at twelve stations and were distributed throughout the three zones (river, transition, and lacustrine), using a plankton net (45 µm). The reservoirs showed different uses and types of nitrogen predominance: Cachoeira (supply/nitrate), Borborema (sewage/ammonia) and Saco...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alpha and beta diversities; Artificial lakes; Cladocera; Copepoda; Brazil; Zooplankton.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602771

Abundance and instantaneous transport of Petrolisthes armatus (Gibbes, 1850) planktonic larvae in the Catuama inlet, Northeast Brazil
Provedor de dados: 42
Autores: Melo Júnior,Mauro de; Schwamborn,Ralf; Neumann-Leitão,Sigrid; Paranaguá,Maryse N.
The influence of tidal and diel changes on the exchange of Petrolisthes armatus planktonic larvae was studied at the Catuama inlet, which represents an intermediate system of marine and estuarine environments in the Northeast Brazil. To characterize the larval abundance and vertical distribution, samplings were carried out in August 2001 at neap tide and 3 stations, with 3 hours interval over 24 hours. Samples were taken at three or two depths at each station, with a plankton pump coupled to a 300 µm mesh size net. Petrolisthes armatus zoea I and II showed a mean of 26.3 ± 83.6 and 12 ± 38.8 ind m-3, respectively. During flood tides, the larvae were more concentrated in the midwater and surface, which avoided the transport to internal regions. In contrast,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Northeast Brazil; Decapod larvae; Petrolisthes armatus; Estuarine inlet; Transport; Zooplankton.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100009

Plankton diversity and limnological characterization in two shallow tropical urban reservoirs of Pernambuco State, Brazil
Provedor de dados: 42
Autores: Almeida,Viviane L.S.; Melão,Maria da Graça G.; Moura,Ariadne N.
Plankton diversity, physical and chemical variables and chlorophyll a were analyzed in two shallow urban reservoirs with different trophic degrees on Pernambuco State, northeastern Brazil. High eutrophication levels were observed in Apipucos reservoir, while Prata reservoir was considered oligotrophic. Values reported for physical and chemical variables and chlorophyll a differed among the studied ecosystems. Richness and plankton diversity were higher in Apipucos reservoir especially for phytoplankton. The presence of potential toxic Cyanophyceae in both reservoirs reflects a problem mainly to Prata reservoir, which is used for public water supply. Differences were observed for some variables among sites of study in Apipucos reservoir, while the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Northeastern Brazil; Phytoplankton; Trophic status; Zooplankton.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200022

Relationship between spatial distribution of chaetognaths and hydrographic conditions around seamounts and islands of the tropical southwestern Atlantic
Provedor de dados: 42
Autores: SOUZA,CHRISTIANE S. DE; LUZ,JOANA A.G.; MAFALDA JUNIOR,PAULO O.
Relationship between spatial distribution of chaetognaths and hydrographic conditions around seamounts and islands off Northeastern Brazil were analyzed from 133 oceanographic stations during the months of January – April of 1997 and April – July of 1998. Oblique zooplankton tows, using 50 cm diameter Bongo nets with 500µm mesh with a flowmeter to determine the filtered volume, were carried out to a maximum of 200m depth. The Superficial Equatorial Water, which had a salinity &gt; 36 PSU and temperature &gt; 20°C, occupied the top 80 to 200m depth. Below this water mass was the South Atlantic Central Water with salinity ranging from 34.5 to 36 PSU and temperature from 6 to 20°C. The community of chaetognaths showed six species: Pterosagitta draco,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Northeastern Brazil; Seamounts; Spatial distribution; Variability; Zooplankton.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301151

The effect of seasonality on the structure of rotifers in a black-water shallow lake in Central Amazonia
Provedor de dados: 42
Autores: NOVA,CLARICE C.; LOPES,VANESSA G.; SOUZA,LEONARDO COIMBRA E; KOZLOWSKY-SUZUKI,BETINA; PEREIRA,TALITA A.A.; BRANCO,CHRISTINA W.C.
Rotifers have often been used as indicators of sudden changes in physical and chemical features of the aquatic environment. Such features vary greatly during flood pulse events in small lakes connected to major floodplains. However, few are the studies that investigate the consequences of the flood pulse in rotifer species composition, abundance, richness and diversity, especially in Amazonian lakes. We analyzed samples from a small blackwater lake of an “igarapé” connected permanently to the Negro river, in Central Amazonia. Samples were taken twice a year for two years, comprising flooding and receding periods of the flood pulse. Rotifer abundance increased significantly after draught events, and electrical conductivity and turbidity were intrinsically...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floodplain; Flood pulse; “igarapé”; Rotifera; Zooplankton.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301359

Range extension of Boeckella bergi Richard, 1897 (Crustacea: Copepoda: Centropagidae), with comments on the taxonomy of the species
Provedor de dados: 49
Autores: Previattelli,Daniel; Perbiche-Neves,Gilmar; Menu Marque,Silvina; Rocha,Carlos Eduardo Falavigna da.
We present new records of Boeckella bergi at several water bodies in Argentina and Brazil. Within these records the northernmost and southernmost limits of occurrence of B. bergi in South America are included. The ample range of distribution is consistent with former studies, but it is more extensive than previously known. Observations on habitat preferences are also made. This species is tolerant to temperate climate conditions in this region of South America, with wide amplitude of temperature between summer and winter seasons, and irregular patterns of precipitation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogeography; Distribution range; Freshwater; Copepoda; South America; Zooplankton.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300101

New records of Monstrilloida Sars, 1901 (Crustacea, Copepoda) on the Brazilian northeastern coast
Provedor de dados: 49
Autores: Dias,Cristina de Oliveira; Bonecker,Sérgio Luiz Costa.
During a series of zooplankton surveys carried out from 2001 through 2005 off the coast of the state of Bahia, Brazil, 98 individuals of monstrilloid copepods were collected. These belong to five species (Monstrilla grandis, Cymbasoma cf. longispinosum, Cymbasoma cf. rigidum, Cymbasoma gracilis, and Cymbasoma quadridens). The first three are recorded for the first time in the Bahia coastal region. The geographical range of C. quadridens is expanded to the Brazilian northeastern coast. The results presented herein increase to nine the number of nominal species of Monstrilloida known from off Bahia; the environmental diversity of Caravelas Channel with highly productive areas and coral reef zones harbor an abundant and diverse monstrilloid fauna that should...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: New occurrence; Zooplankton; Southwest Atlantic; Brazilian coast; Bahia; Taxonomy.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200030

Life cycle of Scapholeberis armata freyi Dumont &amp;amp; Pensaert, 1983 (Cladocera, Daphnidae)
Provedor de dados: 49
Autores: Castilho,Maria Carolina de Almeida; Wisniewski,Célio; Santos-Wisniewski,Maria José dos.
Knowledge of the life cycle of zooplankton species can provide information for a better understanding of the role of each species in the community and basic data for secondary production investigations. In this study, some life-cycle traits were measured for Scapholeberis armata freyi Dumont &amp;amp; Pensaert, 1983 (Cladocera, Daphnidae), maintained under controlled conditions in laboratory cultures. Experiments were carried out in incubators at a temperature of 23.0 ºC, photoperiod of 12 hours light/dark, and food supply (algal suspension of the chlorophycean Pseudokirchneriela subcapitata at 10(5) cells.mL-1 and mixed suspension of yeast, and fish ration added per organism, at equal proportions) that were kept constant. Observations were made once or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anomopoda; Zooplankton; Longevity; Fecundity; Growth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400005

Zooplankton communities as eutrophication bioindicators in tropical reservoirs
Provedor de dados: 49
Autores: Gazonato Neto,Antonio José; Silva,Lidiane Cristina da; Saggio,Angelo Augusto; Rocha,Odete.
Eutrophication is a process characterized by an increase in the aquatic system productivity, which causes profound changes in the structure of its communities. Owing to the high environmental sensitivity of planktonic species, the study of their communities can indicate the deterioration of the environment. The Jaguari and Jacareí reservoirs are part of the Cantareira System, supplying water to São Paulo inhabitants and that has been affected by several forms of continuous human interference. Here we analyze some properties of the zooplankton community as bioindicators of eutrophication and water quality change. In situ physical and chemical measurements were carried out, water was collected for analysis and quantitative zooplankton samples were taken at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; ABC curves; Calanoida/Cyclopoida ratio; Cantareira System; Environmental impact.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400104

New records of Monstrilloida Sars, 1901 (Crustacea: Copepoda) from Rio Grande do Norte (northeastern coast of Brazil)
Provedor de dados: 49
Autores: Dias,Cristina de Oliveira; Medeiros,Guilherme Fulgêncio de; Bonecker,Sérgio Luiz Costa.
During a series of zooplankton surveys carried out during 1984, off the south coast of the state of Rio Grande do Norte, Brazil, several species of monstrilloids were present in the samples. A total of 50 individuals of monstrilloid copepods were collected. These belong to four species (Monstrilla brasiliensis Suárez-Morales &amp;amp; Dias, Cymbasoma cf. longispinosum, Cymbasoma cf. rigidum, and Cymbasoma gracilis Gurney). The taxonomic complexes formed by the species C. cf. longispinosum and C. cf. rigidum in Brazilian waters are discussed. The lengths of the specimens are provided in order to contribute to studies and revisions of the specimens belonging to these species-complexes. The species Monstrilla brasiliensis is recorded for the first time in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Copepods; Southwest atlantic; Brazilian coast; Monstrilla; Cymbasoma.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000200022

Collecting device for zooplankton associated with mesophotic coral ecosystems
Provedor de dados: 50
Autores: Contreras-Vega,Laura; Henao-Castro,Alejandro; Navas-S.,Gabriel R.; Criales,María Isabel; Pascuales,Milena Marrugo.
ABSTRACT Mesophotic coral ecosystems (MCEs) host unique communities that have not been sufficiently studied due to the high cost of available technologies. These reefs can be found between 30 and 150 m deep, where the amount of incident light is &lt; 10 % of that reaching the surface. The zooxanthellae associated with these reefs have a reduced photosynthetic rate due to the low availability of light, therefore, zooplankton becomes the main food source for the coral colonies. To study the composition of zooplankton communities associated to these ecosystems, a device that allowed the collection of zooplankton present on the Bajo Fríjol reef scaffold was designed and tested in the Corales de Profundidad National Natural Park. The device consisted of a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mesophotic reefs; Collection device; Zooplankton.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000300243

FIRST CHARACTERIZATION OF THE PLANKTONIC COMMUNITY IN THE NORTHERN SECTOR OF THE JOINT REGIME AREA JAMAICA - COLOMBIA
Provedor de dados: 50
Autores: Gutiérrez-Salcedo,José Manuel; Cabarcas-Mier,Angélica; Suárez-Mozo,Nancy.
The Joint Regime Area Jamaica-Colombia (JRA) is a sector of economic importance for Colombia but its biodiversity is unknown due to the difficult access. Therefore, the Institute of Marine and Coastal Research - Invemar in agreement with the National Hydrocarbon Agency - ANH, made an expedition in 2011 to obtain a first approximation to the diversity of the JRA. Within the groups studied was the plankton, which was collected around landforms at 21 sampling stations in the northern sector of the JRA, with special plankton nets of 20 µm pore size mesh for phytoplankton and 200 µm for zooplankton. Organisms were identified to the lowest possible taxonomic category and an ecological analysis was performed using descriptive statistics, univariate and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytoplankton; Zooplankton; Joint Regime Area.
Ano: 2015
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612015000200007

Copepods, hydromedusae and siphonophores: Diversity and distribution in the Gerlache Strait, Antarctic Peninsula
Provedor de dados: 50
Autores: Dorado-Roncancio,Edgar Fernando; Cedeño-Posso,Cristina.
ABSTRACT Project Biodiversity and oceanographic conditions of the strait of Gerlache “Biogerlache-Antarctica”, aims to carry out the characterization of the Antarctic fauna of the strait, generating new contributions to the biological inventories of Antarctica. Present work focuses on the biodiversity of the zooplanktonic community, specifically on copepods, hydromedusae and siphonophorae collected during the III Antarctic Expedition of Colombia “Admiral Padilla” (2016-2017). Sampling was carried out in seven oceanographic stations located along the Gerlache strait, with vertical trawls between the maximum depth of the station and the surface. 4100 organisms belonging to 38 species of the phylum Arthropoda (Orders Calanoid and Cyclopoid) and 10 species of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antarctic Ocean; Zooplankton; Diversity; Metridia gerlachei; Dimophyes arctica.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300169

Zooplankton community composition and some limnological aspects of an oxbow lake of the Paraopeba River, São Francisco River Basin, Minas Gerais, Brazil
Provedor de dados: 52
Autores: Sampaio,Edson Vieira; López,Cristiane Machado.
Some limnological aspects of Lake Massacará (adjoining the Paraopeba River, São Francisco River Basin) were studied during two periods of the hydrological cycle. Water transparency was equally low during both the periods. During high water, thermal stratification was recorded, with a clinograde oxygen profile; pH was slightly acid, and conductivity was higher near the bottom. Concentrations of inorganic carbon and ammonia, and rates of primary production were higher than during the low water period. During the latter period, complete mixing occurred, with a clinograde oxygen profile; pH was slightly acid, and conductivity unvarying with depth. Higher concentrations of nitrate were found than during high water. With regard to the zooplankton communities,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxbow lake; Limnology; Zooplankton; Paraopeba River; São Francisco River Basin; Brazil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300007

Length-weight relationships for five cladoceran species in an Amazonian lake
Provedor de dados: 52
Autores: Maia-Barbosa,Paulina Maria; Bozelli,Reinaldo Luiz.
This work shows the length-weight regressions established for the five most frequent and abundant cladoceran species (Bosmina hagmanni, Bosminopsis deitersi, Ceriodaphnia cornuta, Diaphanosoma birgei, and Moina minuta) in two stations at Lake Batata. This lake has received for 10 years very fine bauxite processing tailings, which is responsible for the thick layer over the natural sediment still observed in its western section (impacted station). The individuals were separated into size classes, the dry weight values were determined for each class and were used for establishing weight-length equations. Bosminopsis deitersi and Ceriodaphnia cornuta were the species showing the smallest size in the two sampled areas (0.152 to 0.322 mm) and Diaphanosoma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian lake; Zooplankton; Cladoceran; Length-weight relationships.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200018

Prey selectivity and functional response by larval red-eyed tetra Moenkhausia sanctaefilomenae (Steindachner, 1907) (Characiformes: Characidae)
Provedor de dados: 52
Autores: Alanis,Jorge Gallardo; Sarma,S.S.S.; Nandini,S.
Studies were carried out to quantify the functional response and prey selectivity of larval (1-5 weeks old) of Moenkhausia sanctaefilomenae, a widely cultured ornamental fish, using four rotifers (Brachionus calyciflorus, B. havanaensis, B. patulus and B. rubens) as prey. Regardless of larval age, B. havanaensis was not selected, while B. rubens and B. calyciflorus were preferred. B. patulus was selected only after three weeks. When fed B. calyciflorus, the larvae showed increased prey consumption with increasing age, but remained as plateau around 80 prey individuals. M. sanctaefilomenae consumed much lower individuals of both B. havanaensis and B. patulus, while B. rubens was consumed in higher numbers starting from the first week (about 35 ind. larva-1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prey-predator interactions; Zooplankton; Fish-feeding; Brachionus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500019

Dynamic of decapod crustacean larvae on the entrance of Guanabara bay
Provedor de dados: 52
Autores: Fernandes,Lohengrin Dias de Almeida; Bonecker,Sérgio Luiz Costa; Valentin,Jean Louis.
In the present study, we observed seasonal variations in the density of decapod larvae as well as changes in density related to diurnal and tidal cycles. Among the decapod larvae collected, portunids and grapsids were the most abundant, especially during nocturnal ebb tides and near the surface. The same results were obtained in late winter (September) and late summer (March). These results demonstrated a flow of decapod larvae from Guanabara Bay to adjacent coastal waters. Luciferid (Lucifer faxoni) was the only group with high densities during flood tides and we suggest this is an evidence of L. faxoni larvae entering Guanabara Bay in late winter. Probably these changes in distribution of Lucifer faxoni among winter and summer were related to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea Decapoda larvae; Zooplankton; Vertical Distribution; Vertical Migration; Dynamic; Guanabara Bay.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600013

Population dynamics of Pseudevadne tergestina (Branchiopoda: Onychopoda) in Guanabara Bay, Brazil
Provedor de dados: 52
Autores: Marazzo,Andrea; Valentin,Jean Louis.
Populations of Pseudevadne tergestina were studied in Guanabara Bay, southeastern Brazil, to assess temporal variations in density and population dynamics. Data on temperature, salinity and zooplankton samples were taken from the superficial water of a fixed station, every 3 - 4 days, from February 2 through August 1, 2000. The highest abundance of this species was observed in March, when densities varied widely, from 20 to 600 ind. m-3. Population parameters were calculated, such as birth rate (from 0.25 to 0.90 ind.-1.day-1), growth rate (from -1.30 to 2.09 day-1 ) and death rate ( from -1.6 to 1.9 day-1 ) Start of population could be attributed to the increase of temperature and to the hatching of resting eggs. The population collapsed in fall-winter,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Cladocera; Population parameters; Temporal distribution; Guanabara bay; Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500006

New record of planktonic cladoceran to the upper Paraná River, Brazil: Bosmina huaroensis Delachaux, 1918
Provedor de dados: 57
Autores: VELHO,L. F. M.; LANSAC-TÔHA,F. A.; BONECKER,C. C.
In this paper we register the first occurrence of Bosmina huaroensis Delachaux, 1918 in the upper Paraná River basin, which is probably the first record to Brazil. Illustrations and an updated description of the species are given.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Cladocera; Taxonomy; Bosmina huaroensis; Itaipu reservoir.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400013

Spatial heterogeneity of the Tucuruí Reservoir (State of Pará, Amazonia, Brazil) and the distribution of zooplanktonic species
Provedor de dados: 57
Autores: ESPÍNDOLA,E. L. G.; MATSUMURA-TUNDISI,T.; RIETZLER,A. C.; TUNDISI,J. G.
With the purpose of analyzing the horizontal distribution of the zooplankton community of the Tucuruí Reservoir in the State of Pará, Brazil, collections were made at 16 stations during August 1988. The stations cover the regions called Caraipé (C), Araçagi (B) and Ararão (A), and represent the different compartments of this ecosystem in regard to the morphometry and the presence or absence of "flooded forest". Our findings showed the existence of three compartments with different limnological characteristics determined as a function of the system's morphometry, a factor that may have influenced the horizontal circulation of the reservoir's water and, consequently, led to physical, chemical and biological differences at each of the sampled stations. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooplankton; Horizontal distribution; Spatial heterogeneity; Reservoirs.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000200001

Feeding habits of Chaoboridae larvae in a tropical Brazilian reservoir
Provedor de dados: 57
Autores: ARCIFA,M. S.
The diet of the four larval instars of a Chaoboridae species of Lake Monte Alegre, was evaluated through the analysis of the crop content of individuals caught at night in the lake. Peridinium and zooflagellates were the major components of the diet of instars I and II, whereas microcrustaceans, especially the cladoceran Bosmina, were most important for late instars. When the preferential prey decreased, in the course of the year, the diet was more diversified, increasing the ingestion of Peridinium by instars III and IV. There is a relationship between the mouth diameter of the larvae and the maximum width, height, or diameter of the ingested organisms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chaoboridae; Four instars; Diet; Zooplankton; Omnivory.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400008

Densidad y diversidad del zooplancton en los ríos Salado y Negro --Planicie del Río Paraná -- Argentina
Provedor de dados: 57
Autores: MARGARITA FRUTOS,SANTA.
Zooplankton abundance and diversity of Salado and Negro rivers were compared in relation to the water level fluctuations. The zooplankton pumper samples were collected between March, 1993 and October, 1994. Mean zooplankton density at Salado river was very higher in upstreem. Zooplankton density in the Negro and Salado rivers were variable in the high water phase. Changes in the density appeared to be related to the hydrologic phases, seasonal cycle and conductivity variation. The zooplankton abundance was positively correlated with the abiotic and biotic factors (temperature, transparency and fitoplankton). The dominant group in the two studied rivers were the rotifers. The dominant species in the high water phase were limnoplanktonic and scarce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: The rivers; Zooplankton; Density; Diversity and similarity.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000300008