Consulta: subjectFacets:"Plankton"
Registros recuperados: 101
Data/hora: 13/06/2024 12:51:18

Searching Explanations of Nature in the Mirror World of Math
Provedor de dados: 7
Autores: Scheffer, Marten; Wageningen Agricultural University; Marten.Scheffer@wur.nl.
Despite the huge scientific progress of the last century, the dynamics of complex systems such as the atmosphere, human societies, and ecosystems remain difficult to understand and predict. Nonetheless, our ability to carve the future depends largely on our insight into the functioning of such complex systems. Complex systems are the focus of considerable mathematical theory. Rather than referring to any particular part of the world, such theory addresses what seems to be another world: a world of strange attractors, catastrophe folds, torus destruction, and homoclinic bifurcations. So disparate is the language and notation in this discipline that it is hard to imagine that it has any thing to do with reality as we know it. Indeed, it deals with a kind of...
Tipo: Peer-Reviewed Reports
Palavras-chave: Bifurcation; Catastrophe; Chaos; Cycle; Daphnia; Fish; Macrophyte; Model; Multiple stable states; Plankton; Predation; Trophic cascade.
Ano: 1999

Биоразнообразие и биоресурсный потенциал черноморской экосистемы: современное состояние и прогноз
Provedor de dados: 13
Autores: Токарев, Ю. Н.; Еремеев, В. Н.; Шульман, Г. Е.
It is set that the evolution of biodiversity of black sea ecosystem and its bioresource potential is determined by the row of natural and anthropogenic factors of different nature. The maintainance of biodiversity of ecosystem and rational use of its bioresource potential is related to realization of complex of intergovernmental and public measures, directed on a reconstruction, stabilizing and guard of this unique marine pool, concerted system of monitoring of pelagial and ground regional associations.
Tipo: Book Section
Palavras-chave: Plankton; Benthos; Fishess; Pelagial; Black sea.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1894

Связь биолюминесценции с биомассой и численностью светящегося и всего планктона. 1. Чёрное море.
Provedor de dados: 13
Autores: Черепанов, О. А.; Левин, Л. А.; Утюшев, Р. Н.
В пелагиали Чёрного моря в феврале – апреле коэффициент корреляции между  биолюминесценцией и общей численностью фитопланктона равен 0.64, а между биолюминесценцией и численностью светящегося фитопланктона – 0.53. Более слабая корреляционная связь биолюминесценции с численностью светящихся клеток может быть следствием не учитываемого в данной работе  вклада мелких форм фитопланктона и/или светящихся бактерий.
Tipo: Journal Contribution
Palavras-chave: Биолюминесценция; Планктон; Корреляции; Чёрное море; Bioluminescence; Plankton; Correlation; Black Sea; Кореляції; Чорне море; Біолюмінесценція.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/850

Climate impact on long-term changeability of the black sea bioluminescence field and plankton community characteristics.
Provedor de dados: 13
Autores: Tokarev, Yu.; Mel'nikov, V.; Burmistrova, N.; Belokopytov, V.; Temnykh, A.
Researches in the bioluminescence field vertical structure, amplitude characteristics and spatial distribution in the Black Sea have been conducted in IBSS, NAS of Ukraine, from  up to the present time. Enough evidencies are available to testify dramatic changes in different Black sea ecosystem components including bioluminescence field parameters, which took place last decades. But still there is no direct answer to the question about the reasons for such transformations, as variability of the Black Sea biophysical (bioluminescence) and biological characteristics at the climatic time scales, i.e. at the scale of decade periods are not sufficiently studied now. The most pronounced changes in vertical structure of the bioluminescence field are observed in...
Tipo: Proceedings Paper
Palavras-chave: Climate changeability; Cold intermediate layer; Bioluminescence; Plankton.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/694

О концепции экологической группировки гидробионтов.
Provedor de dados: 13
Autores: Протасов, А. А.
Рассмотрены основные положения концепции экологической группировки гидробионтов. Предложена их уточнённая классификация. Обсуждается вопрос о взаимосвязи группировок, облигатных и случайных или временных представителях группировок, на основе адаптационного градиента. Рассмотрены вопросы эволюции экологических группировок.
Tipo: Journal Contribution
Palavras-chave: Экологические группировки гидробионтов; Бентос; Планктон; Перифитон; Нейстон; Гидробиология; Биом; Гидросфера; Ecological groups of hydrobionts; Benthos; Plankton; Periphyton; Neuston; Hydrobiology; Biome; Hydrosphere; Экологічні групировки гідробіонтів; Перифітон; Гідробіологія; Біом; Гідросфера.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/794

Influence of seamounts at the Atlantic Ocean on modification of the bioluminiscence and plankton characteristics
Provedor de dados: 13
Autores: Tokarev, Yu. N.; Bityukov, E. P.; Williams, R.
The bioluminescence and plankton characteristics in the euphotic layer over 11 seamounts in the Atlantic Ocean were studied. Investigations were carried out along the axis of flow over the mounts. Bathyphotometric measurements (1606 casts) were taken from 2 m to 100 m depths at 87 stations over the various seamounts with a vertical resolution of 1 m. Plankton samples were taken with Juday nets and submersible electric pumps with 36 m3• •h-1 performance. The bioluminescence characteristics varied over seamounts with different geomorphological features. The hydrodynamic gyres, created by the bottom elevations, and the upwelling of water with biogenic elements, also seem to have effects on the quantitative characteristics of the plankton.  The largest changes...
Tipo: Journal Contribution
Palavras-chave: Atlantic Ocean; Seamounts; Bioluminescence; Plankton; Атлантический океан; Подводные возвышенности; Биолюминесценция; Планктон Seamounts Bioluminescence Plankton Plankton http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/168

Динамика характеристик поля биолюминесценции и планктона в восточной Атлантике в зимний период
Provedor de dados: 13
Autores: Токарев, Ю. Н.; Битюков, Э. П.; Василенко, В. И.; Вильямс, Р.; Слипецкий, Д. Я.; Соколов, Б. Г.
Исследовано влияние гидрологических параметров водных масс, видового состава и обилия планктона на пространственную изменчивость амплитудных характеристик поля биолюминесценции вдоль 200 з.д. в Атлантическом океане. Показано, что вертикальное распределение интенсивности поля биолюминесценции коррелирует с количественным развитием фито- и зоопланктона, распределение которых обусловлено концентрацией биогенных элементов и вертикальной структурированностью основных гидрофизических характеристик. Предложено использовать результаты анализа пространственной структуры и амплитудно-временной изменчивости биолюминесценции в различных климатических зонах восточной части Атлантического океана для визуализации вертикальной структуры планктонного сообщества и...
Tipo: Journal Contribution
Palavras-chave: Атлантический океан; Биолюминесценция; Планктон; Пространственная изменчивость; Циркуляция водных масс; Atlantic ocean; Bioluminescence; Plankton; Spatial changeability; Water masses circulation Plankton Bioluminescence Plankton http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/153

Одесская биологическая станция АН УССР: основание, задачи, первые успехи (воспоминания современника)
Provedor de dados: 13
Autores: Зайцев, Ю. П.
По Постановлению Правительства Украинской ССР Одесская биологическая станция (ОБС) была организована в конце 1953 г как научное подразделение Института гидробиологии АН УССР. Основным заданием ОБС было проведение фундаментальных гидробиологических исследований в северо-западной части Черного моря и приморских водоемах – дельтах, лиманах и лагунах. Для получения сравнительных материалов предполагались также изучение других районов Черного моря и Азовское море. В течение первых 10 лет существования ОБС ее специалисты во главе с руководителем станции профессором К.А. Виноградовым выполнили на научных судах станции "Академик С.А. Зернов" и "Миклухо-Маклай" большой объем научных исследований, результаты которых отражены во многих публикациях, в том числе в...
Tipo: Journal Contribution
Palavras-chave: Черное море; Северо-западный шельф; Биология; Планктон; Нейстон; Бентос; Биохимия; ОБС; Biochemistry; Benthos; Biology; Plankton; The Black Sea Biochemistry Benthos Plankton Biology Benthos Biochemistry Plankton Biology http://aims.fao.org/aos/agrovoc/c_878 http://aims.fao.org/aos/agrovoc/c_910 http://aims.fao.org/aos/agrovoc/c_5950 http://aims.fao.org/aos/agrovoc/c_925.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/478

Пространственно-временная динамика численности личинок черноморских Bivalvia в весенний период и ее связь с гидрофизическими особенностями района
Provedor de dados: 13
Autores: Казанкова, И. И.; Немировский, М. С.
Установлено, что фенология личинок Bivalvia в поверхностных и глубинных горизонтах в прибрежных водах Севастополя различна, что может быть связано с особенностями температурного режима верхних и нижних слоев, а также наличием в обследуемом районе двух разнонаправленных течений. Обнаружено соответствие вертикального распределения планктонной и бентосной частей популяций двустворок. В целом, для весеннего периода характерна новая генерация личинок Mytilus galloprovincialis (скальных и иловых популяций), Cerastoderma glaucum, Acanthocardia pauсicostata, Parvicardium exiguum, Mya arenaria, Abra sp., Fabulina fabula и Loripes lucinalis. Великонхи A. pauсicostata, P. exiguum, M. arenaria, а также Modiolus phasealinus в черноморском планктоне идентифицированы...
Tipo: Journal Contribution
Palavras-chave: Планктон; Личинки Bivalvia; Мидия; Акантокардиум; Динамика численности и вертикальное распределение личинок; Plankton; Larvae of Bivalvia; Mussel; Acanthocardium; Dynamiс of larval number; Vertical larval distribution Plankton Plankton http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/156

Связь биолюминесценции с биомассой и численностью светящегося и всего планктона. 1. Баренцево и Норвежское моря
Provedor de dados: 13
Autores: Черепанов, О. А.; Левин, Л. А.; Утюшев, Р. Н.
Для выявления связи между биолюминесценцией и планктоном  исследована корреляция между вертикальными профилями биолюминесценции и данными  154 проб фито- и 206 проб зоопланктона.  Исследованный район (Баренцево и Норвежское моря, 1984 – 1987 гг.) сильно гетерогенен по водным  массам и, соответственно, по видовому составу планктонного сообщества. Видовой состав планктонного сообщества достаточно беден,  что влияет на стабильность корреляционных  связей. Кроме того,  наблюдается  ярко выраженная сезонная сукцессия планктонного сообщества.  Но даже в этих неблагоприятных условиях биолюминесцентный анализ  с  приемлемой  точностью может использоваться для оценки численности и биомассы зоопланктона в достаточно большой промежуток времени (апрель – август) и на...
Tipo: Journal Contribution
Palavras-chave: Биолюминесценция; Планктон; Корреляции; Баренцево море; Норвежское море; Bioluminescence; Plankton; Correlation; Barents Sea; Norwegian Sea Correlation Plankton Bioluminescence Plankton http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/324

Black Sea Mnemiopsis Leidyi database and plankton check list: online tools developed within the black sea scene project
Provedor de dados: 13
Autores: Slipetskyy, D.; Sergeyeva, O.; Gorbunov, V.; Vladymyrov, V.; Tezcan, D.; Myroshnychenko, V.; Gucu, A.
Several specific data and information management tools were developed within the EC Black Sea SCENE project for the Black Sea region. They are: (1) Black Sea Mnemiopsis database, (2) Black Sea Phytoplankton checklist, and (3) Black Sea Zooplankton checklist. The tools work on the Web and have simple user friendly interfaces. They will help to the Black Sea scientists to make their work with biological data more effective and productive. The tools are now being tested by the project participants and populated with the corresponding data and information.
Tipo: Proceedings Paper
Palavras-chave: Black Sea; Species checklist; Mnemiopsis leidyi; Plankton; Database.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/695

Version évolutive de l’outil opérationnel de numérisation et d’analyse semi-automatique d’images de phytoplancton, utilisant le matériel FlowCAM et le logiciel ZooPhytoImage. Nouvelles perspectives
Provedor de dados: 5
Autores: Wacquet, Guillaume; Grosjean, Philippe; Colas, Florent; Hamad, Denis; Artigas, Luis Felipe.
The coupled system FlowCAM/ZooPhytoImage has become a real operational tool in 2014. However, to be fully adapted to the observations of phytoplankton performed in the context of the REPHY observation network and in order to better respond to present and future requests concerning the evaluation of quality of coastal and marine waters within the European requirements, such as the WFD and MSFD, new functionalities must be integrated into existing tools. Therefore, different axis of development have been proposed by UMONS and Ifremer to adapt both the digitization device and the Zoo/PhytoImage software to the constraints defined by the REPHY. First, version 5 of Zoo/PhytoImage contains recent innovations such as the development of routines to automatically...
Tipo: Text
Palavras-chave: Plancton; Analyse automatisée; Analyse d'image; Classification supervisée; Apprentissage actif; Dénombrement de cellules; Plankton; Automated analysis; Image processing; Supervised classification; Active learning; Cells counting.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00389/49986/50573.pdf

Une procédure systématique pour le sous-échantillonnage des prélèvements de plancton
Provedor de dados: 5
Autores: Koutsikopoulos, Constantin; Petitgas, Pierre.
It is often necessary to sub-sample plankton samples even if the precision of the estimation is thereby decreased. A methodological optimization is looked for. The variance depends on the procedure of construction of the aliquot (strategy) and the number of individuals counted (effort). The sub-sampling effort is allocated in a general context of repartition of the total effort between sampling and sub-sampling. This effort depends on the time consumed by the sub-sampling procedure, the volume of the aliquot and the number of individuals counted. For the same effort, a systematic procedure for the construction of sub-samples is more precise than a random one because it travels through the entire sample and is thus less dependent on the spatial distribution...
Tipo: Text
Palavras-chave: Plancton; Sous-échantillonnage; Effort; Précision; Plankton; Sub-sampling; Effort; Precision.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00131/24259/22252.pdf

Surveillance Écologique et Halieutique Site de Gravelines. Novembre 2014 - Octobre 2015
Provedor de dados: 5
Autores: Antajan, Elvire; Lefebvre, Alain; Loots, Christophe; Rocroy, Mélanie; Ruellet, Thierry.
This is the 38th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, and zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00332/44313/43879.pdf

Pelagic habitat: exploring the concept of good environmental status
Provedor de dados: 5
Autores: Dickey-collas, Mark; Mcquatters-gollop, Abigail; Bresnan, Eileen; Kraberg, Alexandra C.; Manderson, John P.; Nash, Richard D. M.; Otto, Saskia A.; Sell, Anne F.; Tweddle, Jacqueline F.; Trenkel, Verena.
Marine environmental legislation is increasingly expressing a need to consider the quality of pelagic habitats. This paper uses the European Union marine strategy framework to explore the concept of good environmental status (GES) of pelagic habitat with the aim to build a wider understanding of the issue. Pelagic ecosystems have static, persistent and ephemeral features, with manageable human activities primarily impacting the persistent features. The paper explores defining the meaning of "good", setting boundaries to assess pelagic habitat and the challenges of considering habitat biodiversity in a moving medium. It concludes that for pelagic habitats to be in GES and able to provide goods and services to humans, three conditions should be met: (i) all...
Tipo: Text
Palavras-chave: Marine strategy framework directive; MPA; Pelagic habitats; Plankton; Seascape.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00414/52596/53551.pdf

Globally Consistent Quantitative Observations of Planktonic Ecosystems
Provedor de dados: 5
Autores: Lomnard, Fabien; Boss, Emmanuel; Waite, Anya M.; Vogt, Meike; Uitz, Julia; Stemman, Lars; Sosik, Heidi M.; Schulz, Jan; Romagnan, Jean-baptiste; Picheral, Marc; Pearlman, Jay; Ohman, Mark D; Niehoff, Barbara; Möller, Klas O; Miloslavich, Patricia; Lara-lpez, Ana; Kudela, Raphael; Lopes, Ribens M; Kiko, Rainer; Karp-boss, Lee; Jaffe, Jules S; Iversen, Morten H; Irisson, Jean-olivier; Fennel, Katja; Hauss, Helena; Guidi, Lionel; Gorsky, Gaby; Giering, Sarah L.c.; Gaube, Peter; Gallager, Scott; Dubelaar, George; Cowen, Robert K; Carlotti, François; Briseno-avena, Christian; Berline, Léo; Benoit-bird, Kelly; Bax, Nicholas; Batten, Sonia; Ayata, Sakina Dorothée; Artigas, Luis Felipe; Appeltans, Ward.
In this paper we review the technologies available to make globally quantitative observations of particles in general—and plankton in particular—in the world oceans, and for sizes varying from sub-microns to centimeters. Some of these technologies have been available for years while others have only recently emerged. Use of these technologies is critical to improve understanding of the processes that control abundances, distributions and composition of plankton, provide data necessary to constrain and improve ecosystem and biogeochemical models, and forecast changes in marine ecosystems in light of climate change. In this paper we begin by providing the motivation for plankton observations, quantification and diversity qualification on a global scale. We...
Tipo: Text
Palavras-chave: Plankton; Imaging; OceanObs; Autonomous platforms; Global observing; EOVs; ECVs.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60217/63585.pdf

Pre- and post-settlement events in benthic community dynamics
Provedor de dados: 5
Autores: Fraschetti, S; Giangrande, A; Terlizzi, A; Boero, F.
In all marine benthic environments, organism replacement depends on recruitment limitation, i.e. the impact of both pre- and post-settlement events on the success of recruitment. The relative contribution of pre- versus post-settlement processes in shaping adult populations has been extensively studied. Most analyses concluded that recruitment limitation is a strong determinant of adults' density. The magnitude of its limitation depends on context, varies with species, and can be strongly modified by all the events preceding and following recruitment itself. A comparison of the outcome of recruitment limitation on hard- and soft-bottom communities has often been neglected. The rules governing these two environments, in both the inter- and the subtidal,...
Tipo: Text
Palavras-chave: Limitation du recrutement; Evénements pré- et post installation; Benthos; Plancton; Cycles vitaux; Recruitment limitation; Pre- and post-settlement events; Benthos; Plankton; Life-cycles.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43295/43031.pdf

Analysis of time series of planktonic communities in the Adriatic Sea: Distinguishing between natural and man-induced changes
Provedor de dados: 5
Autores: Solic, M; Krstulovic, N; Marasovic, I; Baranovic, A; Pucherpetkovic, T; Vucetic, T.
Time series (&gt; 20 years) of bacterioplankton, phytoplankton and zooplankton abundances and of phytoplankton production in the Adriatic Sea were analysed. Multivariate methods were used to extract the main patterns of year-to-year changes in abundances (Principal Component Analysis), and to discriminate between years and sites (Multidimensional Scaling). Increasing long-term trends were established for planktonic abundances and phytoplankton production in both coastal and open sea areas, presumably as a result of eutrophication processes. In the open sea, natural factors (water exchange between the Mediterranean and Adriatic Seas, and temperature) were dominant in controlling year-to-year fluctuations of plankton. On the other hand, long-term...
Tipo: Text
Palavras-chave: Plankton; Time series; Natural factors; Man-induced factors.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20386/18053.pdf

Etude bibliographique de quelques espèces planctoniques et benthiques littorales de la Manche - Volume 3 - Espèces zoobenthiques
Provedor de dados: 5
Autores: Blanchard, Michel.
This document is the third volume of a bibliographical survey of some of the species studied by IFREMER Brest's Coastal Environment Department (DEL) on a regular basis. The studied animals are a selection of characteristic community species (ex: Lanice or Abra) or populations whose density is so large that they are the ideal material for a regular pluri-annual study (ex: Nucule). For some of them, a regular geographical distribution along the Channel coasts, can be another reason for their selection. On the one hand, for some species, which can be easily reached on the tidal zone, works are numerous and documentation heavy, especially in the ethology field (building of tube of Lanice, displacement of Patelle) On the other hand, documentation, if any, is...
Tipo: Text
Palavras-chave: Bentic; Coastal species; Plankton; English Channel sea; Tapes rhomboides; Spisula ovalis; Abra alba; Glycymeris glycemeris; Nucula nucleus; P. intermedia; P. aspera; Patella vulgata; Lanice conchilega; Benthiques; Espèces littorales; Plancton; Manche; Tapes rhomboides; Spisula ovalis; Abra alba; Glycymeris glycemeris; Nucula nucleus; P. intermedia; P. aspera; Patella vulgata; Lanice conchilega.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/rapport-3697.pdf

Surveillance écologique et halieutique du site de Gravelines. Novembre 2012 - Octobre 2013
Provedor de dados: 5
Autores: Antajan, Elvire; Delesmont, Régis; Foveau, Aurelie; Hervio Heath, Dominique; Lefebvre, Alain; Loots, Christophe; Luczak, Christophe.
This is the 36th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, and zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton – Microbiologie; Benthos; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00197/30862/29230.pdf

Mare Incognitum: A Glimpse into Future Plankton Diversity and Ecology Research
Provedor de dados: 5
Autores: Chust, Guillem; Vogt, Meike; Benedetti, Fabio; Nakov, Teofil; Villeger, Sebastien; Aubert, Anais; Vallina, Sergio M.; Righetti, Damiano; Not, Fabrice; Biard, Tristan; Bittner, Lucie; Benoiston, Anne-sophie; Guidi, Lionel; Villarino, Ernesto; Gaborit, Charlie; Cornils, Astrid; Buttay, Lucie; Irisson, Jean-olivier; Chiarello, Marlene; Vallim, Alessandra L.; Blanco-bercial, Leocadio; Basconi, Laura; Guilhaumon, Francois; Ayata, Sakina-dorothee.
With global climate change altering marine ecosystems, research on plankton ecology is likely to navigate uncharted seas. Yet, a staggering wealth of new plankton observations, integrated with recent advances in marine ecosystem modeling, may shed light on marine ecosystem structure and functioning. A EuroMarine foresight workshop on the “Impact of climate change on the distribution of plankton functional and phylogenetic diversity” (PlankDiv) identified five grand challenges for future plankton diversity and macroecology research: (1) What can we learn about plankton communities from the new wealth of high-throughput “omics” data? (2) What is the link between plankton diversity and ecosystem function? (3) How can species distribution models be adapted to...
Tipo: Text
Palavras-chave: Plankton; Macroecology; Species distribution; Functional diversity; Climate change; Habitat modeling.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00625/73739/74755.pdf

Surveillance écologique du site de production électronucléaire de Gravelines Novembre 2011– Octobre 2012
Provedor de dados: 5
Autores: Antajan, Elvire; Hervio Heath, Dominique; Lefebvre, Alain; Loots, Christophe; Luczak, Christophe.
This is the 35th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, and zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00180/29116/27522.pdf

Preliminary results from POLMAR III (April 13-18, 1978) (SUROIT III) ATP, primary production and respiration rates in zooplankton. Complément à la Communication du Groupe Ecophysiologie du Centre Océanologique de Bretagne (SAMAIN et al.)
Provedor de dados: 5
Autores: Hendrikson, P.; Hirche, H.j.; Junghans,, U.
ATP, primary production and respiration rates in seston, respiration rates in zooplankton have been investigated after the spill by "AMOCO CADIZ". Gross primary production seems to be similar to the normal situation. The rate of photosynthesis is lower at the "AMOCO CADIZ" station than at any of the others. Respiration rates are surprisingly high at the surface. ATP concentra­tion exhibit an homogeneous pattern, zooplankton respiration are similar to the data obtained in Peruvian upwelled waters or in zooplankton culture. A more detailed computation of data will be necessary before concluding.
Tipo: Text
Palavras-chave: Plancton; Taux respiratoires; ATP; Production primaire; Pollution; AMOCO CADIZ; Plankton; Respiration rates; ATP; Primary production; Pollution; AMOCO CADIZ.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41729/40940.pdf

Surveillance écologique et halieutique du site de production électronucléaire de Gravelines - Novembre 2003 / Octobre 2004
Provedor de dados: 5
Autores: Delesmont, Régis; Dewarumez, Jean-marie; Hitier, Benoist; Lefebvre, Alain; Luczak, Christophe; Woehrling, Daniel.
This is the 27th annual surveillance report concerning the central nuclear power plant of Gravelines. This very high power level (5400 MW) results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveillance studies concern monitoring of fish populations (larvae and eggs of Sole and Sprat) or crustaceans( shrimps), benthic system (intertidal and subtidal) and pelagic system (hydrology, microbiology, phytoplankton, zooplankton). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term...
Tipo: Text
Palavras-chave: Benthos; Microbiologie; Plancton; Halieutique; Hydrologie; Surveillance; Gravelines; Centrale nucléaire; Benthos; Microbiology; Plankton; Fisheries; Hydrology; Network survey; Gravelines; Nuclear power plant.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-931.pdf

Surveillance écologique du site de production électronucléaire de Gravelines Novembre 2010 - Octobre 2011
Provedor de dados: 5
Autores: Antajan, Elvire; Delesmont, Régis; Dewarumez, Jean-marie; Lefebvre, Alain; Loots, Christophe; Luczak, Christophe.
This is the 34th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Microbiologie; Benthos; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00076/18709/16282.pdf

Surveillance Écologique et Halieutique. Site de Gravelines. Novembre 2006 - Octobre 2007
Provedor de dados: 5
Autores: Lefebvre, Alain; Antajan, Elvire; Delesmont, R; Dewarumez, J. M.; Luczak, C.
This is the 30th annual surveillance report concerning the central nuclear power plant of Gravelines. This very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveillance studies concern monitoring of fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), benthic system (intertidal and subtidal) and pelagic system (hydrology, microbiology, phytoplancton, zooplancton). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the...
Tipo: Text
Palavras-chave: Benthos; Microbiologie; Plancton; Halieutique; Hydrologie; Surveillance; Gravelines; Centrale nucléaire; Benthos; Microbiology; Plankton; Fisheries; Hydrology; Network survey; Gravelines; Nuclear power plant.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/rapport-4007.pdf

Biomass changes and trophic amplification of plankton in a warmer ocean
Provedor de dados: 5
Autores: Chust, Guillem; Allen, J. Icarus; Bopp, Laurent; Schrum, Corinna; Holt, Jason; Tsiaras, Kostas; Zavatarelli, Marco; Chifflet, Marina; Cannaby, Heather; Dadou, Isabelle; Daewel, Ute; Wakelin, Sarah L.; Machu, Eric; Pushpadas, Dhanya; Butenschon, Momme; Artioli, Yuri; Petihakis, Georges; Smith, Chris; Garcon, Veronique; Goubanova, Katerina; Le Vu, Briac; Fach, Bettina A.; Salihoglu, Baris; Clementi, Emanuela; Irigoien, Xabier.
Ocean warming can modify the ecophysiology and distribution of marine organisms, and relationships between species, with nonlinear interactions between ecosystem components potentially resulting in trophic amplification. Trophic amplification (or attenuation) describe the propagation of a hydroclimatic signal up the food web, causing magnification (or depression) of biomass values along one or more trophic pathways. We have employed 3-D coupled physical-biogeochemical models to explore ecosystem responses to climate change with a focus on trophic amplification. The response of phytoplankton and zooplankton to global climate-change projections, carried out with the IPSL Earth System Model by the end of the century, is analysed at global and regional basis,...
Tipo: Text
Palavras-chave: Ecosystem model; Food web; Plankton; Primary production; Sea warming; Trophic amplification.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00188/29966/28481.pdf

Nouvelles donnees sur la reproduction du thon rouge (Thunnus thynnus L.) et d'autres especes de thonides en Mediterranee
Provedor de dados: 5
Autores: Duclerc, J; Sacchi, J; Piccinetti, C; Piccinetti-manfrin, G; Dicenta, A; Barrois, J-m.
Two international research cruises on board of the research vessel 'Ichthys' the first one in Aug-Sept 1971, and the second other in June-July 1972, have shown the reproduction of Thunnus thynnus, T.alalunga, Auxis thazard and Sarda in the surroundings of the Balearic Islands. The observations were made on the planctonic stages of these spp and on the physico-chemical and biological conditions of the environment. Some data were also collected on the presence of juvenile or mature stages of these fishes and on their fishery.
Tipo: Text
Palavras-chave: Plankton; Eggs; Larvae; Physico chemical conditions; Mediterranean sea; Reproduction; Thunnidae; Bluefin tuna.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2159.pdf

Zonal variability of plankton and particle export flux in the equatorial Pacific upwelling between 165° E and 150° W
Provedor de dados: 5
Autores: Le Borgne, R; Rodier, M; Le Bouteiller, A; Murray, Jw.
Observations made during a "La Nina" situation (April-May 1996) in the equatorial Pacific upwelling, between 165 degrees E and 150 degrees W, show the classic deepening of hydrological isolines from east to west, resulting in zonal gradients for surface temperature and macronutrients. However, contrasting with such a gradient, no clear zonal variation could be seen for integrated planktonic biomasses and carbon fluxes, namely: chlorophyll a, bacterial abundances, particulate organic phosphorus, mesozooplankton ash free dry weight, primary production, and the sinking flux of particulate organic carbon (POC). Moreover, mean values of these parameters along the zonal equatorial transect, are not significantly different from those of a 7-day-long time series...
Tipo: Text
Palavras-chave: Pacifique équatorial; Variabilité zonale; Plancton; Sédimentation de carbone; Production primaire; Equatorial Pacific; Zonal variations; Plankton; Carbon sinking flux; Primary production.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43629/43254.pdf

Alkenone distributions in the North Atlantic and Nordic sea surface waters
Provedor de dados: 5
Autores: Sicre, Ma; Bard, E; Ezat, U; Rostek, F.
The C(37)-C(39) alkenones were quantified in suspended particulate matter obtained from the surface waters of the North Atlantic, including the Nordic seas, over a temperature range of 4degrees20 C. U(37)(K') values were linearly correlated to temperature over the entire range covered by our data set, i.e., 420 C (U(37)(K') = 0.027T + 0.036, r(2) = 0.97). The compilation of water column data from the Atlantic, Pacific, and Southern Ocean and Mediterranean Sea suggests that the linear model may not be the best function for fitting U(37)(K') and in situ temperature values. It also shows that suspended matter data from warm waters (T &gt;20degreesC) are still needed to constrain the equation of the global curve. High abundances of C(37: 4) were found in the...
Tipo: Text
Palavras-chave: Alkenones; Paleotemperature; Calibration; Atlantic Ocean; Plankton; Geochemistry; Marine geochemistry; Global change; Biogeochemical processes (4805); Oceanography; Paleoceanography.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/00223/33393/31866.pdf

Plankton as biological pump for contaminants in marine ecosystems: a transmediterranean approach (Merite Hippocampe cruise, april-mai 2019)
Provedor de dados: 5
Autores: Carlotti, François; Tronczynski, Jacek; Tedetti, Marc; Pagano, Marc; Garnier, Cédric.
Recent research on the bioaccumulation of organic and trace element contaminants along trophic food webs suggests that plankton plays a central role as a 'biological pump' for pollutants. The MERITE-HIPPOCAMPE project (oceanographic cruise in April- May 2019) aims at studying the interactions between plankton and contaminants (metallic, organic plastics) at atmosphere/water/biota interfaces via a North-South trans-Mediterranean approach in contrasted areas (primary production, fishing zones, ecoregions, polluted bays). The target contaminants are on the lists of priority pollutants and substances of Regional Conventions (OSPAR) and EU directives (WFD, MSF). The expected results are to provide a better understanding of the transfer processes of contaminants...
Tipo: Text
Palavras-chave: Trace elements; Pcb; Pah; Plankton; Mediterranean Sea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00599/71132/69447.pdf

Models of relations between bacteria and plankton, and regeneration processes in marine planktonic ecosystem.
Provedor de dados: 5
Autores: Martin, Y; Lelong, P; Cauchi, B.
In order to study bacteria-plankton relationships, experimental and mathematical models were used to stimulate biological processes implicated in plankton ecosystems and to analyze community relationships. The model components are phytoplankton, zooplankton, autotrophic and heterotrophic bacteria, ciliates, nutrients, organic matter and phytoplankton antibiotics. This study shows the importance of some factors affecting bacteria communities dynamics and the bacterial activity in mineralization process. Bacterial populations seem to be controlled essentially by the concentration and chemical composition of organic substrates. Antibiosis and predation show a lesser importance on changes in bacteria communities.
Tipo: Text
Palavras-chave: Biogeochemistry; Bacteria; Microorganisms; Mathematical models; Mineralization; Ecosystems; Plankton; Ecological associations.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-982.pdf

Role des bacteries phototrophes anoxygeniques dans une partie stratifiee d'une lagune tropicale (Lagune Ebrie, Cote d'Ivoire)
Provedor de dados: 5
Autores: Caumette, P.
In the deepest parts of the estuarine region of Ebrie Lagoon (Abidjan Africa, (5 degree N, 4 degree W) stratified conditions have been observed during the rainy season (May to Nov.), owing to salinity differences between oxic and anoxic layers. At the interface, 3-4 m depth, phototrophic bacteria (Chromatium, Chlorobium and Pelodictyon ) developed, forming a brown layer due to their different pigments. Their production has been estimated at 41% of the total photosynthetic production during high stratification (Sep. 1981) and their biomass was used by the copepod population for 40 to 60% of its diet. During the dry season, the water column became homogeneous and oxygen was detected to 6m depth. The brown layer of phototrophic bacteria disappeared, as well...
Tipo: Text
Palavras-chave: Chlorobium; Chromatium; Primary production; Photosynthesis; Estuaries; Seasonal variations; Plankton; Stratification; Vertical distribution; Bacteria; Coastal lagoons; Trophic relationships; Biomass.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-957.pdf

Surveillance Écologique et Halieutique. Site de Gravelines. Novembre 2015 - Octobre 2016
Provedor de dados: 5
Autores: Antajan, Elvire; Devreker, David; Lefebvre, Alain; Loots, Christophe; Rocroy, Mélanie; Ruellet, Thierry.
This is the 39th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached a maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, and zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00383/49458/49957.pdf

Seasonal variation of stable isotope ratios of size-fractionated zooplankton in the Bay of Marseille (NW Mediterranean Sea)
Provedor de dados: 5
Autores: Banaru, Daniela; Carlotti, Francois; Barani, Aude; Gregori, Gerald; Neffati, Nada; Harmelin-vivien, Mireille.
Stable isotope ratios of six size fractions of zooplankton (80 to &gt;2000 mm) were analyzed seasonally in 2009-2010 at the SOMLIT site in the Bay of Marseille. Isotopic ratios generally increased with zooplankton size. The highest delta N-15 values were observed in the 1000-2000 mm fraction. The largest size class (&gt;2000 mu m), dominated by gelatinous plankton, had lower delta N-15 values due to the low isotopic signatures of most of these organisms. In the larger size fractions (&gt;1000 mu m), isotopic ratios were measured at the taxon level. Brachyuran, stomatopod, teleost and cephalopod larvae showed the highest delta N-15 values, and salps and pteropods the lowest ones. Lower values of both delta C-13 and delta N-15 were recorded in winter and...
Tipo: Text
Palavras-chave: Plankton; Delta C-13; Delta N-15; Size classes; Flow cytometry.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00372/48275/48536.pdf

Rapid responses of pristine marine planktonic communities in experimental approach to diuron and naphthalene (Juan de Nova Island, Western Indian Ocean)
Provedor de dados: 5
Autores: Bouvy, Marc; Dupuy, Christine; Got, Patrice; Domaizon, Isabelle; Carré, Claire; Pagano, Marc; Debroas, Didier; Roques, Cécile; Leboulanger, Christophe.
Planktonic communities from Juan de Nova lagoon were submitted to a single exposure of diuron or naphthalene in triplicate outdoor 40-L mesocosms for 5 days. The study followed the temporal changes of the assemblages by determining abundances and taxonomic level of microbial (heterotrophic prokaryotes, picocyanobacteria, heterotrophic protists and phytoplankton) and metazooplankton communities. Exposure to both contaminants did not result in significant changes in phytoplankton abundances. Microscopic identification demonstrated the dominance of Bacillariophyta (mostly Chaetoceros tenuissimus) accounting for more than 95% of the microalgae detected in all mesocosms. Using 18S rRNA metabarcoding, temporal changes in the proportion of eukaryotic operational...
Tipo: Text
Palavras-chave: Contaminant; Taxonomy; Metabarcoding; Plankton; Experiments; Lagoon.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00681/79348/81853.pdf

Multiple microalgal partners in symbiosis with the acantharian Acanthochiasma sp. (Radiolaria)
Provedor de dados: 5
Autores: Decelle, Johan; Siano, Raffaele; Probert, Ian; Poirier, Camille; Not, Fabrice.
Acantharia (Radiolaria) are widespread and abundant heterotrophic marine protists, some of which can host endosymbiotic eukaryotic microalgae. Although this photosymbiotic association was first described at the end of the 19th century, the diversity of the symbiotic microalgae remains poorly characterized. Here, we examined the identity of the microalgae associated with the acantharian species Acanthochiasma sp. by sequencing partial 18S and internal transcribed spacer (ITS) ribosomal DNA genes from cultured symbionts and directly from isolated holobiont specimens. Single Acanthochiasma cells contained multiple symbiotic partners, including distantly related dinoflagellates (Heterocapsa sp., Pelagodinium sp., Azadinium sp. and Scrippsiella sp.) as well as...
Tipo: Text
Palavras-chave: Photosymbiosis; Radiolaria; Acantharia; Protists; Microalgae; Plankton.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00114/22493/21497.pdf

The Seasonal and Inter-Annual Fluctuations of Plankton Abundance and Community Structure in a North Atlantic Marine Protected Area
Provedor de dados: 5
Autores: Benedetti, Fabio; Jalabert, Laëtitia; Sourisseau, Marc; Becker, Beatriz; Cailliau, Caroline; Desnos, Corinne; Elineau, Amanda; Irisson, Jean-olivier; Lombard, Fabien; Picheral, Marc; Stemmann, Lars; Pouline, Patrick.
Marine Protected Areas have become a major tool for the conservation of marine biodiversity and resources. Yet our understanding of their efficacy is often limited because it is measured for a few biological components, typically top predators or species of commercial interest. To achieve conservation targets, marine protected areas can benefit from ecosystem-based approaches. Within such an approach, documenting the variation of plankton indicators and their covariation with climate is crucial as plankton represent the base of the food webs. With this perspective, we sought to document the variations in the emerging properties of the plankton to better understand the dynamics of the pelagic fishes, mammals and seabirds that inhabit the region. For the...
Tipo: Text
Palavras-chave: Iroise Sea; Plankton; MPA; Temporal variability; Community composition; Size structure.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60213/63561.pdf

Surveillance écologique et halieutique du site de production électronucléaire de Gravelines Novembre 2008 – Octobre 2009
Provedor de dados: 5
Autores: Antajan, Elvire; Delesmont, Régis; Dewarumez, Jean-marie; Lefebvre, Alain; Luczak, Christophe; Warembourg, Caroline.
This is the 32th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveillance studies concern monitoring of fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), benthic system (intertidal and subtidal) and pelagic system (hydrology, microbiology, phytoplankton, zooplankton). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00055/16592/14099.pdf

Factors affecting bacterial biomass and growth in the Duplin River estuary and coastal Atlantic Ocean.
Provedor de dados: 5
Autores: Fallon, R; Newell, S; Sherr, B; Sheer, E.
Bacterial numbers and growth rates were measured in coastal, planktonic systems of the Western Atlantic ocean. Seasonal responses in growth rates of the bacterial assemblage were present at some sites, but these may be related to seasonal changes in substrate supply rather than to changes in temperature. Bacterial growth rates tended to decline with increasing distance from shore. There was evidence for predator-prey population cycles in the bacteria and &lt; 17 mu m protozoa in the Duplin River Estuary which may indicate that the bacterial assemblage serves as prey for protozoan populations. In summer, a significant negative correlation between mu (instantaneous growth rate) and cell numbers in the bacterial assemblage indicated that substrate limitation...
Tipo: Text
Palavras-chave: Protozoa; Plankton; Bacteria; Predators; Grazing; Temperature effects; Seasonal variations; Limiting factors; Interspecific relationships; Nutrients (mineral); Growth.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-955.pdf

A new bathyphotometer for bioluminescence measurements on the Armorican continental shelf (northeastern Atlantic)
Provedor de dados: 5
Autores: Geistdoerfer, P; Vincendeau, Ma.
A new bathyphotometer has been developed by the Oceanographic Laboratory of the French Naval Academy which has performed a series of in situ bioluminescence: measurements since 1994. It is used as an additional probe to a Seabird (R) CTD. It measures planktonic bioluminescence. It is associated with a SeaTech (R) fluorometer. The Armorican shelf has particularly been investigated since July 1994. Results obtained in January and April 1995 off Brittany (France), at the entrance to the Bay of Douarnenez and in the northern Bay of Biscay are presented as examples. A method to separate the bioluminescence background from sharp peaks is presented. The strength of bioluminescence signals was related to seasonal planktonic biomass fluctuations, low in winter,...
Tipo: Text
Palavras-chave: Bioluminescence marine; Bathyphotomètre; Atlantique nord-est; Plancton; Marine bioluminescence; Bathyphotometer; Northeastern Atlantic; Plankton.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43616/43313.pdf

Présence d'un Protogonyaulax sp. sur le littoral atlantique français pendant l'hiver 1987
Provedor de dados: 5
Autores: Lassus, Patrick; Bardouil, Michele.
A dinoflagellate belonging to Protogonyaulax genera and forming more than 20 cells chains was observed from November 1987 to February 1988 in Vilaine Bay and in the west ofIle d'Yeu (France). This species was not detected in coastal phytoplankton during preceding surveys. Close to Protogonyaulax affinis it seems to be a winter developing species for this coastal area. Vertical distribution shows in december a migration of the patch towards deeper layers. Increasing occurrences of species belonging to Protogonyaulax (Alexandrium Balech) genera inshore or coastal waters need to pay more attention to the taxonomy of such organisms. Some species are effectively well known as poisons producers.
Tipo: Text
Palavras-chave: Pyrrophycophyta; Milieu marin; Morbihan; Vendée; Océan Atlantique Nord; Plancton; Morphologie; Algae; Thallophyta; Bretagne; France; Europe; Pays de Loire; Océan Atlantique; Pyrrophycophyta; Marine environment; Morbihan; Vendée; North Atlantic; Plankton; Morphology; Algae; Thallophyta; Bretagne; France; Europe; Pays de Loire; Atlantic Ocean.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00133/24474/22485.pdf

Surveillance Écologique et Halieutique Site de Gravelines. Novembre 2013 - Octobre 2014
Provedor de dados: 5
Autores: Antajan, Elvire; Lefebvre, Alain; Loots, Christophe; Luczak, Christophe; Ruellet, Thierry.
This is the 37th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, and zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton – Microbiologie; Benthos; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00259/37004/35501.pdf

Dynamique des populations bactériennes au cours de deux productions expérimentales de phytoplancton marin naturel
Provedor de dados: 5
Autores: Bianchi, M.a.; Martin, Y.p.
Quantitative and qualitative variations of the hetero­trophic bacterial population, during two experimental induced phytoplanktonic blooms are described. When the phytoplanktonic population deceases, the bacte­rial population exhibits a significant increase. The spring microflore is quite different from the fall ones. Microbiological, physiological and biochemical fluctuations indicate qualitative fluctuations. Bacterial strains are identified as "bacterial profiles".
Tipo: Text
Palavras-chave: Plancton; Bactéries; Dynamique; Physiologie; Structure; Plankton; Bacteria; Dynamic; Physiology; Structure.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00305/41669/40878.pdf

Surveillance écologique et halieutique du site de production électronucléaire de Gravelines Novembre 2007 – Octobre 2008
Provedor de dados: 5
Autores: Antajan, Elvire; Delesmont, Régis; Dewarumez, Jean-marie; Lefebvre, Alain; Luczak, Christophe; Warembourg, Caroline.
This is the 31th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveillance studies concern monitoring of fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), benthic system (intertidal and subtidal) and pelagic system (hydrology, microbiology, phytoplankton, zooplankton). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00055/16591/14098.pdf

The parasitic dinoflagellates Blastodinium spp. inhabiting the gut of marine, planktonic copepods: morphology, ecology, and unrecognized species diversity
Provedor de dados: 5
Autores: Skovgaard, Alf; Karpov, Sergey A.; Guillou, Laure.
Blastodinium is a genus of dinoflagellates that live as parasites in the gut of marine, planktonic copepods in theWorld’s oceans and coastal waters. The taxonomy, phylogeny, and physiology of the genus have only been explored to a limited degree and, based on recent investigations, we hypothesize that the morphological and genetic diversity within this genus may be considerably larger than presently recognized. To address these issues, we obtained 18S rDNA and ITS gene sequences for Blastodinium specimens of different geographical origins, including representatives of the type species. This genetic information was in some cases complemented with new morphological, ultrastructural, physiological, and ecological data. Because most current knowledge about...
Tipo: Text
Palavras-chave: Blastodinium; Copepod; Parasite; Symbiont; Plankton; Uttrastructure; Phylogeny.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00133/24407/22401.pdf

Transfert et mineralisation de la matiere organique azotee a travers les deux premiers echelons de la micro communaute heterotrophe
Provedor de dados: 5
Autores: Vanwambeke, F; Bianchi, M.
Bacterial response to organic (amino acids) or inorganic (NH sub(4) super(+)) nitrogen was studied in 350 liter closed batch systems. The experiments demonstrate an important NH sub(4) super(+) remineralization associated with bacterial growth. The differences between substrate and bacterial C/N ratios and bacterial metabolic demands partly explain the high values of ammonia produced. Grazing by heterotrophic microflagellates resulted in an important release of NH sub(4) super(+). This suggests and important role of grazers for the nitrogen remineralization in natural waters.
Tipo: Text
Palavras-chave: Flagellata; Ciliata; Bacteria; Plankton; Heterotrophic organisms; Ammonia; Amino acids; Nitrogen cycle; Mineralization.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-986.pdf

Polymorphisme de Biddulphia sinensis greville dans le bassin de Marennes-Oléron.
Provedor de dados: 5
Autores: Le Borgne-david, Annick.
The plankton catches carried out in the Marennes-Oléron basin during the summer of 1971, in order to monitor the extent and changes of oyster larvae emissions, have also served at the same time as phytoplanktonic studies.
Tipo: Text
Palavras-chave: Apophyse; Spines; Polymorphism; Diatom; Plankton.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2051.pdf

Guide méthodologique. Version actualisée de ZooPhytoImage avec refonte de l’interface graphique. Action 9. FlowCam ZooPhytoImage. Livrable n°1. Rapport final
Provedor de dados: 5
Autores: Grosjean, Philippe.
Zoo/PhytoImage 4 is an « open source » software based on R and ImageJ. It processes numerical images of plankton particles digitized using a FlowCAM, a flat-bed scanner, microor macrophotos, etc. The general concept consists in the individual outlining of particles on the pictures, followed by their measurements (so-called « attributes ») such the size, the shape, transparency, textures, etc. These attributes are then used by a classification tool to automatically predict the taxonomic group the particles belong to. The classifier is obtained after a learning stage using a machine learning algorithm and a training set of pre-identified particles. The algorithm learns to recognize the taxonomic group from the set of attributes measured on the picture. The...
Tipo: Text
Palavras-chave: Océanographie biologique; Plancton; Surveillance côtière; Analyse automatisée; Analyse d'image; Classification supervisée; Biological oceanography; Plankton; Costal survey; Automated analysis; Image analysis; Machine learning.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00363/47436/47461.pdf

Importance et role du materiel organique vivant et inerte dans les suspensions de la Baie de Seine
Provedor de dados: 5
Autores: Dupont, J; Lafite, R.
Living and inert organic matter take an important place inside suspensions in Seine Bay. There particulate matter and the organo-mineral particles can induce granulometric modes, which constitute a determinant component for dynamics characterizing of suspensions. Organic fraction, in particular, plankton (diatoms and zooplankton) is a main factor in open sea which can concentrate when coming into contact with mass water fronts. Organo-mineral aggregates are present in all estuaries. Importance and action of this organic particulate matter are studied for a best knowledge of this ecosystem.
Tipo: Text
Palavras-chave: Zonal distribution; Estuaries; Species diversity; Plankton; Suspended inorganic matter; Sedimentation; Hydrodynamics; Suspended organic matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1278.pdf

Surveillance Écologique et Halieutique. Site de Gravelines. Novembre 2000 - Octobre 2001
Provedor de dados: 5
Autores: Delesmont, Régis; Dewarumez, Jean-marie; Hitier, Benoist; Lefebvre, Alain; Le Fevre-lehoerff, Geneviève; Luczak, Christophe; Woehrling, Daniel.
This is the 24th annual surveillance report concerning the central nuclear power plant of Gravelines. This very high power level (5400 MW) results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveillance studies concern monitoring of fish populations (larvae and eggs of Sole and Sprat) or crustaceans( shrimps), benthic system (intertidal and subtidal) and pelagic system (hydrology, microbiology, phytoplankton, zooplankton). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Microbiologie; Benthos; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00006/11712/8370.pdf

Simplified Transformation of Ostreococcus tauri Using Polyethylene Glycol
Provedor de dados: 5
Autores: Sanchez, Frédéric; Geffroy, Solene; Norest, Manon; Yau, Sheree; Moreau, Hervé; Grimsley, Nigel.
Ostreococcus tauri is an easily cultured representative of unicellular algae (class Mamiellophyceae) that abound in oceans worldwide. Eight complete 13–22 Mb genomes of phylogenetically divergent species within this class are available, and their DNA sequences are nearly always present in metagenomic data produced from marine samples. Here we describe a simplified and robust transformation protocol for the smallest of these algae (O. tauri). Polyethylene glycol (PEG) treatment was much more efficient than the previously described electroporation protocol. Short (2 min or less) incubation times in PEG gave &gt;104 transformants per microgram DNA. The time of cell recovery after transformation could be reduced to a few hours, permitting the experiment to be...
Tipo: Text
Palavras-chave: Chlorophyta; Prasinophyte; Mamiellophyceae; Ostreococcus; Plankton; Picoeukaryote; Ecosystem; Bioluminescence; Promoter; Luciferase; Gene expression.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00500/61170/64639.pdf

Surveillance écologique du site de production électronucléaire de Gravelines Novembre 2009 – Octobre 2010
Provedor de dados: 5
Autores: Antajan, Elvire; Delesmont, Régis; Dewarumez, Jean-marie; Lefebvre, Alain; Loots, Christophe; Luczak, Christophe.
This is the 33th annual surveillance report concerning the nuclear power plant of Gravelines. Its very high power level results from six plant units located on the shore and is characterised by a cooling system with a coastal surface input and output. The production of electricity began in 1980 and reached maximum in 1986. Surveys concern monitoring of pelagic system (hydrology, microbiology, phytoplankton, zooplankton), fish populations (larvae and eggs of Sole and Sprat) or crustaceans (shrimps), and benthic macrofauna (intertidal and subtidal). This survey deals with spatial and temporal approaches (i) study of the direct impact by comparison of the input and output seawater stations, (ii) study of medium and long term evolution of the area by...
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Benthos; Microbiologie; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00055/16593/14100.pdf

Development of in situ hybridisation using 16S rRNA gene to monitor black-lip pearl oyster, Pinctada margaritifera, larvae in plankton samples
Provedor de dados: 5
Autores: Thomas, Yoann; Belliard, Corinne; Garen, Pierre; Gueguen, Yannick; Montagnani, Caroline.
In French Polynesia, the black-lip pearl oyster Pinctada margaritifera has been farmed to produce pearls since the 1980s, forming the basis of a major industry. The sustainability of this activity relies on spat collection in the lagoons. However, pearl oyster spat can be difficult to identify for the evaluation of stock variations. It is especially hard to distinguish Pinctada spp. larvae at a very early stage of development. In the present study, a whole- mount in situ hybridisation (ISH) technique was developed to allow the discrimination of larvae of closely-related pearl oyster species found in the French Polynesian atolls. Using specific ribosomal 16S-DNA sequence data, we were able to successfully differentiate between Pinctada margaritifera and...
Tipo: Text
Palavras-chave: Whole larvae in situ hybridisation; 16S rRNA; Plankton; Species identification; Pearl oyster; Pinctada margaritifera.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14603/11923.pdf

Contribution a l'etude du microplancton des etangs corses de Diana et Urbino et du secteur marin adjacent.
Provedor de dados: 5
Autores: Paulmier, Gerard.
Investigations carried out in both Corsica lagoons Diana and Urbino during the period from January to August 1985, permitted to define the main characteristics of microplankton cycle. Two phytoplanktonic blooms have been observed, first in winter, second less important in July-August. Any correlation cannot be observed between phytoplanktonic cycle or one its main components, and both environmental variables temperature and salinity. However dissolved oxygen ratio may be subject to large summer variations, drifting towards until ecological desequilibrious.
Tipo: Text
Palavras-chave: Algal blooms; Dissolved oxygen; Salinity effects; Temperature effects; Phytoplankton; Plankton.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1800.pdf

Surveillance Écologique et Halieutique. Site de Gravelines. Novembre 1999 - Octobre 2000
Provedor de dados: 5
Autores: Le Fevre-lehoerff, Geneviève; Delesmont, Régis; Dewarumez, Jean-marie; Hitier, Benoist; Lefebvre, Alain; Luczak, Christophe; Woehrling, Daniel.
This is the 23th annual surveillance report concerning the Gravelines nuclear power plant. Gravelines, located between Calais and Dunkerque and very high power station (5400 MW) with sixth plants. liegining of electricity production in 1980 reached maximum production in 1986. Surveillance studies concern fisheries, intertidal and subtidal zoobenthos hydrology, microbiology, phytoplankton and zoplankton. Studies concern seasonal variations in natural environment and impact study at outfall of plant.
Tipo: Text
Palavras-chave: Centrale nucléaire; Gravelines; Surveillance; Hydrologie; Halieutique; Plancton; Microbiologie; Benthos; Nuclear power plant; Gravelines; Network survey; Hydrology; Fisheries; Plankton; Microbiology; Benthos.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00006/11715/8373.pdf

Clio piatkowskii, a mesopelagic pteropod new to science (Gastropoda, Opisthobranchia)
Provedor de dados: 16
Autores: Spoel, S. van der; Schalk, P.H.; Bleeker, J.
A pteropod species new to science: Clio piatkowskii is described from benthopelagic samples taken in high Antarctic waters of the Weddell Sea. Comparisons with related species are made and its taxonomic place in the genus Clio is discussed.
Tipo: Article / Letter to the editor
Palavras-chave: Gastropoda; Pteropoda; Clio; Taxonomy; Plankton; Antarctica.
Ano: 1992
URL: http://www.repository.naturalis.nl/record/504812

Frecuencia estacional del microplancton costero de Montevideo durante en el año 1958
Provedor de dados: 20
Autores: Ferrando, H.J.
Se busca obtener una visión, lo más completa posible, de las variaciones del microplancton costero de Montevideo, tomando como base un punto de toma fijo (Playa de los Ingleses), durante el transcurso de un año completo, a los efectos de establecer un punto de partida para estudios regulares en los años venideros, de tal modo que permita llegar al conocimiento de las variaciones estacionales de este importante grupo hidrobiológico.
Tipo: Journal Contribution
Palavras-chave: Plankton; Seasonal variations; Planktonology; Plankton; Http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 1959
URL: http://hdl.handle.net/1834/3028

Occurence of harmful dinoflagellates in the punic harbors of Carthage (Gulf of Tunis) and their correlations with the physicochemical parameters
Provedor de dados: 20
Autores: Aissaoui, A.; Turki, S.; Ben Hassine, O. K.
Afin de fournir une meilleure idée sur la structure et la dynamique de la communauté des dinoflagellés et leurs relations avec les paramètres environnementaux dans les zones semi-fermées en communication avec le golfe de Tunis, une étude a été réalisée dans les ports puniques de Carthage afin d’estimer les densités et la dynamique des espèces de dinoflagellés ainsi que les variations des concentrations en nutriments, de janvier à juin 2006. Un nombre de 66 espèces de dinoflagellés ont été identifiés dont 14 espèces sont connues pour être nocives et responsables d’efflorescences nuisibles alors que 21 espèces sont connues pour être productrices de toxines. L'analyse statistique nous a permis de révéler des corrélations significatives entre les densités de...
Tipo: Journal Contribution
Palavras-chave: Parameters; Nutrients (mineral); Coastal environment; Plankton; Nutrients; Plankton.
Ano: 2012
URL: http://hdl.handle.net/1834/5318

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

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

Estudio del plancton en la zona de pesca de la merluza
Provedor de dados: 20
Autores: Ferrando, H.J.
La finalidad del estudio está orientada hacia la confirmación, en base a las determinaciones de los distintos organismos planctónicos de la existencia de una zonación manifiesta en el área biooceanográfica correspondiente a los litorales marítimos de Argentina, Uruguay y sur de Brasil.
Tipo: Journal Contribution
Palavras-chave: Plankton; Trophic relationships; Plankton surveys; Plankton; Http://aims.fao.org/aos/agrovoc/c_5950.
Ano: 1958
URL: http://hdl.handle.net/1834/3024

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

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

Tramas tróficas en sistemas frontales del Mar Argentino: estructura, dinámica y complejidad analizada mediante isótopos estables
Provedor de dados: 20
Autores: Gaitán, E.N.
Two of the most important frontal systems of the Argentine Sea (SW Atlantic Ocean) were compared to obtain evidences on the regulatory mechanisms of food web length, incorporating both spatial (areas within fronts) and temporal (presence or absence of frontal structure) variability. The stable isotopes of Carbon and Nitrogen were used to evaluate the origin and composition of the organic matter used by primary consumers, the structure of food webs, the trophic levels of several taxa and the benthic-pelagic coupling within each system. In the Río de la Plata estuarine front, different sources of organic matter would support the food webs occurring in the three areas of the system. The particulate organic material (POM) would be the main resource supporting...
Tipo: Theses and Dissertations
Palavras-chave: Food webs; Trophic relationships; Trophic levels; Saline fronts; Estuarine front; Carbon isotopes; Nitrogen isotopes; Plankton; Benthos; Brackishwater fish; Marine fish; Brackishwater environment; Marine environment.
Ano: 2012
URL: http://hdl.handle.net/1834/4523

Planktonic copepod community in the neritic area south western part of Tunis bay influenced by Meliane river supplies (south western Mediterranean sea)
Provedor de dados: 20
Autores: Ben Lamine, Y.; Daly Yahia Kefi, O.; Daly Yahia, N.
The Tunis bay is located in the North Estern coast of Tunisia and receives in its Western part flows from Meliane River. Our study aims to describe the composition and the spatiotemporal distribution of planktonic copepods in the bay in order to identify the effect of the Meliane River supplies on the community. A grid of 19 stations was investigated monthly from July 2004 to December 2004 using a 160 μm mesh size plankton net, towed obliquely from the bottom to the surface. The planktonic copepod community was represented by 21 taxa of Calanoida, 4 taxa of Cyclopoida, 3 taxa of Poicilostomatoida and one species of Harpacticoida. The presence of freshwater taxa like Arctodiaptomus salinus, Microcyclops sp and Thermocyclops sp in the coastal stations...
Tipo: Journal Contribution
Palavras-chave: Plankton; Distribution; Crustaceans; Freshwater-seawater interface.
Ano: 2012
URL: http://hdl.handle.net/1834/5317

Floración algal ocasionada por Prorocentrum mexicanum en el canal de Jambelí
Provedor de dados: 20
Autores: Coello, D.; Cajas, J.; Macías, P.; Lindao, J.
Se presentan los resultados obtenidos de un muestreo realizado en el estuario interior del Golfo de Guayaquil con respecto a la presencia de una marea roja en el Canal de Jambelí frente a las poblaciones de Balao Grande y Tenguel. Se determinaron cuatro estaciones a lo largo del canal y en el estero cercano. Tanto la densidad y composición de fitoplancton, zooplancton e ictioplancton correspondieron a lo esperado para la zona, con excepción de la estación tres ubicada frente a la isla Puna, donde se observó espuma de color café oscuro distribuida a manera de franja, la cual sería resultado de la proliferacion (6.1 x 106 cel.I-1), del dinoflagelado Prorocentrum mexicanum Tafall (Synonyms Prorocentrum maximun Schiller), especie conocida como cosmopolita,...
Tipo: Journal Contribution
Palavras-chave: Algal blooms; Red tides; Sampling; Plankton.
Ano: 2010
URL: http://hdl.handle.net/1834/4836

Notas hidrológicas de aguas superficiales ecuatorianas según indicadores biológicos-foraminíferos planctónicos
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
El presente trabajo trata sobre la distribución de los foraminíferos planctónicos vivos en aguas superficiales del mar ecuatoriano, durante los periodos normales y anómalos del océano, ocurridos en determinadas épocas de los años 1971 a 1973 y 1974. El área de muestreo de mayor extensión comprende desde la costa hasta Long. 86°W entre Lat. 01°22'N y Lat. 03°16'S. La distribución de los foraminíferos planctónicos evidencia el desplazamiento de masas de aguas procedentes de la Cuenca de Panamá, Corriente del Perú y zonas de convergencia. Las especies indicadoras de aguas cálidas fueron: Globigerinoides ruber, Bloborotalia mebnardii, Globigerinoides sacculifer y de aguas frías: Globigerina quinqueloba, Globigerinita bradyi, Globigerina bulloides. Durante la...
Tipo: Journal Contribution
Palavras-chave: Foraminifera; Plankton; Indicator species; Vertical distribution; Horizontal distribution; Coastal waters; Environmental conditions; Plankton; Indicator species; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_35790; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1992
URL: http://hdl.handle.net/1834/2313

Variabilidad estacional del plancton en la Bahía de Manta en la costa ecuatoriana, durante el 2011
Provedor de dados: 20
Autores: Naranjo, Ch.; Tapia, M.E.
In 2011, in the Bay of Manta was presented a high diversity of phytoplankton species, determining a total of 75 species, 29 groups for the zooplankton, which were identified to species level the Phylum Chaetognatha identified 6 species and Cladocera with 2 species. The seasonal time during 2011, did not influence the average abundances of the dominant species of phytoplankton and zooplankton, using the student T Test statistic with 95% confidence However specific tests were performed between different stations have a greater diversity of species and stations with less diversity, showing a significant difference in the mean of the population of phytoplankton. The oceanographic conditions recorded in the Equatorial Pacific states mainly cooling during...
Tipo: Journal Contribution
Palavras-chave: Variability; Plankton; Chlorophylls; Biomass; Species diversity; Seasons.
Ano: 2013
URL: http://hdl.handle.net/1834/5760

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

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

Características oceanográficas y geoquímicas del Golfo de Guayaquil durante noviembre de 1994
Provedor de dados: 20
Autores: Cuadra, T. de la; Chalén, X.; Pérez, P.; Macías, P.; Ortega, D.; Ormaza, F.
Las masas de agua encontradas a partir de las variables de estado, indican una contribución muy pobre de Agua Subtropical Superficial (ASTS), mientras que las mayores contribuciones fueron de Agua Tropical Superficial (ATS). Parámetros como la temperatura y la salinidad determinaron un calentamiento del océano, tanto a nivel superficial como subsuperficial, lo cual sería una consecuencia de los procesos de redistribución de calor del océano.Esta dinámica ocasionaría anomalías del orden de los 30 metros para el caso de la profundidad de la termoclima y 2°C para el caso de la TSM. En el plancton se registraron valores mayores a 5000 larvas de peces/10 m2. La menor cantidad (260 larvas/10 m2) se registró hacia el norte del Golfo, observándose al mismo tiempo...
Tipo: Journal Contribution
Palavras-chave: Oceanographic data; Geochemistry; Salinity data; Plankton; Organic matter; Plankton; Organic matter; Geochemistry; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_5387; Http://aims.fao.org/aos/agrovoc/c_24848.
Ano: 1994
URL: http://hdl.handle.net/1834/3080

First IOC/WESTPAC Training Course on Monitoring of PSP Plankton and Shellfish Toxic, July 1995; Second IOC/WESTPAC Training Course on Species Identification on Harmful Microagae, February 1997;  Third IOC/WESTPAC Training Course on Species Identification of Harmful Microalgae, August 1997.
Provedor de dados: 20
Two training courses on Species Identification of Harmful Microalgae were held at ANESC (Asian Natural Environmental Science Center) of the University of Tokyo on 28 February - 8 March and 22-30 August, 1997. Before these courses a training workshop on Monitoring of PSP Plankton and Toxin Monitoring was held at School of Fisheries Sciences of Kitasato University on 17-21 July, 1995. The courses and workshop were one of the important activities planned and implemented by the WESTPAC HAB project (Harmful Algal Blooms in the Western Pacific). Expenses were provided by the Japanese Government through the funds in trust to the Intergovernmental Oceanographic Commission (IOC) of UNESCO, and partially by ANESC of the University of Tokyo and School of Fisheries...
Tipo: Report
Palavras-chave: Plankton; Harmful Microalgae.
Ano: 1997
URL: http://hdl.handle.net/1834/5592

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

Aspectos oceanográficos del plancton y su relación con el frente ecuatorial, durante septiembre del 2011
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 12 estaciones ubicadas en las secciones 83°- 86°-89° y 92°W, realizadas en septiembre del 2011. Se identificaron 71 especies de fitoplancton en muestras de red (50µ). Las diatomeas fueron dominantes y en menor concentración se observaron los Dinoflagelados, Cocolitofóridos, Silicoflagelados, Cianobacterias y Tintínnidos. En las muestras de red se observaron Chaetoceros eibenii, Rhizosolenia imbricata, Thalassiosira subtilis, Proboscia alata y Planktoniella sol características del Frente Ecuatorial en la sección 86°W y 02° sur. En zooplancton se registraron 17 taxa zooplanctónicas destacándose los grupos de Radiolarios 47.5%,...
Tipo: Journal Contribution
Palavras-chave: Composition; Distribution; Plankton; Diatoms; Abundance; Cruises.
Ano: 2012
URL: http://hdl.handle.net/1834/4705

Taxonomy of the chaetognaths of the Bight of Panama
Provedor de dados: 20
Autores: Pineda-Polo, F.H.
Confusions arising on the taxonorny of Sagitta pacifica. S. bedoti and S. pulchra are mainly the result of imprecise and subjective descriptions. A new modern account on two of the three species as they appeared in plankton samples collected off the colombian Pacific and the Bight of Panama is provided, Including meristic and morphological information. For the third species S. bedoti, only the relevant meristic and morphometric information gathered is included since publislicd accounts are adequate. It is hoped that this work will represent a contribution in future taxonomic and ecological studies on these species.
Tipo: Journal Contribution
Palavras-chave: Plankton; Taxonomy; Plankton; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_7631.
Ano: 1977
URL: http://hdl.handle.net/1834/3907

Listado de diatomeas (Bacillariophyta) registradas para el Mar Caribe colombiano
Provedor de dados: 20
Autores: Lozano-Duque, Yesid; Vidal-V., Luis A.; Navas-S., Gabriel R.
Se realizó una revisión bibliográfica de la información disponible sobre las especies registradas de diatomeas (Bacillariophyta) para las zonas costera y oceánica del mar Caribe colombiano. Se presenta el listado de 337 taxones correspondientes a 312 especies, 19 variedades y siete formas, agrupadas en 54 familias y 106 géneros. La clasificación taxonómica se basó en el sistema propuesto por Round et al. (1990).
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Plankton; Plankton; Phytoplankton; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344.
Ano: 2010
URL: http://hdl.handle.net/1834/3741

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

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

Distribution spatiale de l'ichtyoplancton en été et en automne et conditions environnementales dans le golfe de Tunis
Provedor de dados: 20
Autores: Romdhane, M.S.; El Abed, A.; Zarrad, R.; M’rabet, R.; Missaoui, H.
Pendant l’été et l’automne de l’année 2002, deux campagnes d’étude de l’ichtyoplancton ont été effectuées dans le golfe de Tunis. La température moyenne des eaux de surface a été de 25,51°c en été et 21,85°c en automne. Les œufs et les larves ont été plus abondants en été qu’en automne (360 œufs /10m² et 244 larves /10m² en été et 115 œufs /10m² et 174 larves /10m² en automne). Les paramètres environnementaux : température, salinité oxygène dissous, pH, chlorophylle a et abondance du mésozooplancton ne semblent  pas avoir une influence directe sur la distribution spatiale de l’ichtyoplancton. Cependant, la bathymétrie semble avoir une influence sur cette distribution.
Tipo: Journal Contribution
Palavras-chave: Mésozooplancton; Golfe de Tunis; Plankton; Zooplankton MED; Tunisia; Tunis Gulf Abundance Distribution Environmental factors Ichthyoplankton Zooplankton Distribution Environmental factors Zooplankton http://aims.fao.org/aos/agrovoc/c_35773 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2003
URL: http://hdl.handle.net/1834/1075

Dinámica del plancton marino costero con relación al flujo de mareas  en Bahía Aeolián en septiembre 2006 (Baltra-Galápagos-Ecuador)
Provedor de dados: 20
Autores: Torres,G; Andrade,C.
En Bahía Aeolián es un puerto que esta sometido al tráfico marítimo principalmente  turístico, donde se efectúa el centro de distribución comercial de combustibles para las mismas. En el agua de lastre y casco de los barcos se transportan organismos no deseados (virus, bacterias, algas que causan plagas o enfermedades), que se han propagado a nivel mundial, afectando algunos ecosistemas naturales (Waite et al., 2003), generando grandes problemas que siguen afectando tanto a países desarrollados como en vías de desarrollo.   Existen escasas investigaciones del plancton en la Bahía Aeolián, el objetivo del presente estudio fue caracterizar una Base de datos de la biodiversidad el fitoplancton y zooplancton del ecosistema marino costero del Puerto Baltra y...
Tipo: Preprint
Palavras-chave: Plankton; Ocean tides; Dynamics.
Ano: 2014
URL: http://hdl.handle.net/1834/5455

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

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

The abundance, biomass and composition of pelagic ciliates in East African lakes of different salinity and trophy
Provedor de dados: 20
Autores: Yasindi, A. W.; Taylor, W. D.
Planktonic ciliates were studied in 17 tropical East African lakes of different salinity and trophic status. Oligotrichs (e.g., Strombidium, Strobilidium and Halteria) and scuticociliates (e.g., Cyclidium, Pleuronema, Cristigera), dominated the ciliate communities. Conductivity and trophic status were the most important environmental variables influencing the distribution of ciliate species in East African lakes. Herbivorous oligotrichs were important in oligotrophic and mesotrophic lakes, as they are in temperate and subtropical lakes, but their importance decreased with increasing chlorophyll a concentration and conductivity. On the other hand, the importance of scuticociliates (primarily bacterivores) increased with increasing chlorophyll a and...
Tipo: Proceedings Paper
Palavras-chave: Freshwater lakes; Abundance; Biomass; Pelagic environment; Salinity; Plankton; Community composition; Oligotrophic lakes; Aquatic communities; Regression analysis; Tropical lakes; Species diversity; Plankton; Freshwater.
Ano: 2006
URL: http://hdl.handle.net/1834/5311

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

Variabilidad del plancton en estaciones fijas frente a la costa ecuatoriana
Provedor de dados: 20
Autores: Coello, D.; Prado, M.; Cajas, J.; Cajas, L. de.
Planktonic information obtained in four fixed stations in front of Esmeraldas coast, Punta Galera, Puerto López and salinas is analyzed, during 1999-2000 and 2003-2006 periods. Temporal variability of phytoplankton and zooplankton densities between 2004 and 2006 were mainly determined by the oceanographic characteristics, and by the interrelations between the components of plankton and seasonal distribution of the organisms, as well. Higher phytoplankton productivity was determined in front of Esmeraldas, whereas the higher concentrations of zooplankton were obsrved in Puerto López, this evidences the predation at the first by the second trophic level. the phytoplankton composition in Esmeraldasis mainly influenced by the Esmeraldas river whereas in Port...
Tipo: Journal Contribution
Palavras-chave: Plankton; Aquatic communities; El Nino phenomena; Biological production.
Ano: 2010
URL: http://hdl.handle.net/1834/5368

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

Planktic Cyanobacteria from São Paulo State, Brazil: Chroococcales
Provedor de dados: 88
Autores: Sant'Anna,Célia L.; Azevedo,Maria Teresa de P.; Senna,Pedro Américo C.; Komárek,Jirí; Komárková,Jaroslava.
The biodiversity studies of planktic cyanobacteria started in 1997 with intensive collecting in different water bodies of São Paulo State. Due to the problems brougth by eutrophication and cyanobacterial blooms, the samplings were concentrated in reservoirs of Alto Tietê region that supply drinking water to millions of people. The samples were collected with 20 µm plankton net or Van Dorn's bottle. Part of each one was preserved in formaldehyde or lugol solution and part was isolated. The culture strains were kept in BG11 and/or AMS1 media. Based on natural and culture material, 26 species were identified belonging to the families Chroococcaceae (2 taxa), Merismopediaceae (12), Microcystaceae (7) and Synechococcaceae (5). Among these species, six are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Chroococcales; Cyanobacteria; Plankton; Taxonomy.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000200002

A molecular method to detect and identify the native species of southwestern Atlantic Crassostrea (Mollusca: Ostreidae)
Provedor de dados: 103
Autores: Ludwig,Sandra; Patella,Raquel; Stoiev,Sérgio; Castilho-Westphal,Gisela; Girotto,Marcus V. F; Ostrensky,Antonio.
Among oysters, species of Crassostrea (Sacco, 1897) are the most attractive to aquaculture. In Brazil, the genus is represented by C. rhizophorae (Guilding, 1828) and C. brasiliana (Lamarck, 1819). Because the maturation and breeding technology is not well developed for these species, aquaculturists need a reliable method to decide the correct time to place spat collectors in the field, and to identify both species, which are morphologically similar. In this study a specific Multiplex PCR protocol was developed, using one pair of universal primers from 18S rDNA as a positive control and a pair of specific primers for each target species. The sensitivity and specificity of the protocol was evaluated. It detected C. rhizophorae DNA in low concentrations, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiplex PCR; Oysters; Plankton; Specific primers.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400002

Reproductive timing and larval dispersal of intertidal crabs: the predator avoidance hypothesis
Provedor de dados: 97
Autores: CHRISTY,JOHN H.
Many intertidal and shallow water crabs have strong reproductive cycles and migratory larvae. Females release larvae near the time of high water of the larger amplitude nocturnal tides during the semilunar or lunar cycles. Newly hatched larvae move quickly at night toward and into the sea where, weeks later, they develop to megalopae that then ride nocturnal flood tides inshore and up estuaries to settle in adult habitats. It was first thought that crabs might time larval release so that larvae will become megalopae when they can ride the larger amplitude spring flood tides to adult habitats. This idea was rejected when it was found that were was no change in the timing of hatching during the breeding season by several estuarine species that would...
Tipo: Journal article
Palavras-chave: Larval release; Larval dispersal; Crabs; Reproductive timing; Plankton; Predation.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000200005

Finding patterns of distribution for freshwater phytoplankton, zooplankton and fish, by means of parsimony analysis of endemicity
Provedor de dados: 97
Autores: OYANEDEL,J. PABLO; VEGA-RETTER,CAREN; SCOTT,SERGIO; HINOJOSA,LUIS FELIPE; RAMOS-JILIBERTO,RODRIGO.
During the last decades, limnological studies on Chilean systems have contributed to know the species composition and main environmental variables of many water bodies distributed over a wide latitudinal interval, from 18º to 53º S. However, we still lack of a comprehensive view about the structure and functioning of regional freshwaters. In this work we review the available information about pelagic biota from Chilean basins, in order to reveal patterns of species distribution and their possible association with environmental variables. We built presence-absence matrices for phytoplankton, zooplankton and fish over lakes and basins. From this database, we performed parsimony analysis of endemicity as a tool for determining fundamental distribution...
Tipo: Journal article
Palavras-chave: Limnology; Lakes; Plankton; Biogeography; Chile; CCA.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000200004

Chemical composition of phytoplankton from the estuaries of Eastern Amazonia
Provedor de dados: 36
Autores: Vilhena,Maria do Perpetuo Socorro Progene; Costa,Marcondes Lima da; Berrêdo,José Francisco; Paiva,Rosildo Santos; Almeida,Pryscila Denise.
Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state of Pará. The chemical composition of the surface water, bottom sediments (total sample and bioavailable fraction), and the phytoplankton were determined by inductively coupled plasma optical emission spectrometry. Phytoplankton contained high concentrations of Ca, P, Mn, Fe, Zn, Al, Ba, and Pb. The phytoplankton of the Mocajuba estuary is rich in Fe (2,967-84,750 µg g-1), while those from the Pará is rich in Al (1,216-15,389 µgg-1), probably reflecting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sediments; Trace metals; Plankton; Surface water.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000400012

Growth and gastrointestinal indices in Nile tilapia fed with different diets - doi: 10.4025/actascianimsci.v34i3.13327
Provedor de dados: 2
Autores: Moreira, Ricardo Lafaiete; Universidade Federal do Ceará; Silveira, Lucas Pinheiro; Universidade Federal do Ceará; Teixeira, Erivânia Gomes; Universidade Federal do Ceará; Moreira, Antonio Glaydson Lima; Universidade Federal do Ceará; Moura, Plácido Soares de; Universidade Federal do Ceará; Farias, Wladimir Ronald Lobo; Universidade Federal do Ceará.
The adequate diet of Nile tilapia in their growth early stages is fundamental to the success of culture subsequent stages. The goal of the present work was to evaluate the Nile tilapia growth fed with different diets, and to morphometrically characterized the gastrointestinal tract of this species. The treatments consisted of three diets: (D1) natural food, (D2), commercial feed and (D3) commercial feed + natural food. In the qualitative phytoplankton analysis, there was greater representation of the genus Chlorella, while zooplankton community analysis revealed greater number of Brachionus rotifer. Growth and survival in D2 and D3 did not reveal differences (p &amp;gt; 0.05), while in D1, the results were significantly lower (p &amp;lt; 0.05). The...
Tipo: Pesquisa de campo; análise laboratorial
Palavras-chave: Ciências Agrárias / Engenharia de Pesca Oreochromis; Diets; Natural food; Plankton; Digestive tract.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13327

Influence of Eichhornia crassipes and Lemna sp. on the natural diet of Astyanax altiparanae Garutti &amp; Britski, 2000 in the initial stages
Provedor de dados: 3
Autores: Galdioli, Eliana Maria; Hayashi, Carmino; Soares, Claudemir Martins; Soares, Telma; Wolff, Liu.
 Aiming to study the changes in the diet of Astyanax altiparanae in the early developmental stages, in the presence of Eichhornia crassipes (EC) and Lemna sp. (LM), larvae of Astyanax altiparanae were stocked in eight tanks of 900 L (500 ind. tank-1), four with EC and four with LM covering 50% surface. Tanks were inoculated with plankton and received 3.0 g inorganic fertilizer (NPK-7:14:8) and 1.5 g every week. At every three days, three larvae were taken from each tank, fixed in 4% formaldehyde and grouped into four age classes (I: 6 to 12 days, II:15 to 21 days, III:24 to 30 days; IV:33 to 39 days). The analysis of dominance and frequency of occurrence (FO) of food items indicated that, at this stage, A. altiparanae is generalist. In class I, there was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 fish larvae; Floating macrophyte; Plankton; Larval development; Diet. 2.05.03.00-8.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32102

Species richness of testate amoebae in different environments from the upper Paraná river floodplain (PR/MS) - doi: 10.4025/actascibiolsci.v33i3.7261
Provedor de dados: 3
Autores: Costa, Deise de Morais; Universidade Estadual de Maringá; Alves, Geziele Mucio; UEM; Velho, Luiz Felipe Machado; UEM; Lansac-Tôha, Fábio Amodêo; UEM.
This study evaluated the species richness of testate amoebae in the plankton from different environments of the upper Paraná river floodplain. Samplings were performed at subsurface of pelagic region from twelve environments using motorized pump and plankton net (68 &amp;micro;m), during four hydrological periods. We identified 67 taxa, distributed in seven families and Arcellidae, Difflugiidae and Centropyxidae were the most representative families. Higher values of species richness were observed in the lakes (connected and isolated) during the flood pulses. Centropyxis aculeata, Difflugia gramem and D. pseudogramem were frequent throughout the study period. Seasonal variability of species in the channels and isolated lakes was evidenced by beta...
Palavras-chave: Protozoa; Plankton; Diversity; Species composition Protozoa; Plankton; Diversity; Species composition.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7261

An annotated checklist of the Arcella (Arcellidae) from littoral zone of Paranoá lake-Brazil, with a pictorial key
Provedor de dados: 3
Autores: Silva, Mariana Lessa Carneiro da; Rangel, Elisangela Reis; Lansac-Tôha, Fabio Amodêo; Schwind, Leilane Talita Fatoreto; Joko, Ciro Yoshio.
The pictorial key contributes to taxonomic analysis, as it lists the species found in a given environment, and points out the morphological characteristics that differs one specific taxon from the others. Arcellidae Ehrenberg, 1830 is one of the testate amoebae families with highest representativity in terms of richness and abundance, including three genera, that Arcella shows greater dispersion in different types of aquatic biotopes. The zooplankton community in the Paranoá Lake has been extensively studied over the decades. However, there are no studies on testate amoebae in this environment. The study aimed to develop a pictorial key to help in the identification of Arcella in the Paranoá Lake. Samples were taken with plankton net at 13 sites in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.04.05.00-6 protist; Taxonomy; Biological diversity; Plankton; Arcellidae; Center west Taxonomia dos Grupos Recentes.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/29187

Copepod distribution and production in a Mid-Atlantic Ridge archipelago
Provedor de dados: 42
Autores: MELO,PEDRO A.M.C.; MELO JÚNIOR,MAURO DE; MACÊDO,SILVIO J. DE; ARAUJO,MOACYR; NEUMANN-LEITÃO,SIGRID.
The Saint Peter and Saint Paul Archipelago (SPSPA) are located close to the Equator in the Atlantic Ocean. The aim of this study was to assess the spatial variations in the copepod community abundance, and the biomass and production patterns of the three most abundant calanoid species in the SPSPA. Plankton samples were collected with a 300 µm mesh size net along four transects (north, east, south and west of the SPSPA), with four stations plotted in each transect. All transects exhibited a tendency toward a decrease in copepod density with increasing distance from the SPSPA, statistically proved in the North. Density varied from 3.33 to 182.18 ind.m−3, and differences were also found between the first perimeter (first circular distance band) and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oligotrophic; Plankton; St. Peter and St. Paul archipelago; Tropical; Upwelling.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401719

Protozooplankton and its relationship with environmental conditions in 13 water bodies of the Mogi-Guaçu basin - SP, Brazil
Provedor de dados: 49
Autores: Bagatini,Inessa Lacativa; Spínola,Ana Lúcia Gerardi; Peres,Bianca de Miranda; Mansano,Adrislaine da Silva; Rodrigues,Mafalda Alexandra Antunes; Batalha,Marco Antônio Portugal Luttembarck; Lucca,José Valdecir de; Godinho,Mirna Januária Leal; Tundisi,Takako Matsumura; Seleghim,Mirna Helena Regali.
Protozooplankton is an important component of the aquatic microbial food webs and its composition, density, and distribution reflect the chemical, physical, and biological aspects of the environment. Considering the scarce literature on freshwater protozoans in Brazil and on protozoan ecology in subtropical environments, we listed the ciliates and amoebae taxa found in 13 water bodies in São Paulo State and analyzed their abundance in relation to the environmental variables. We collected two samples in each environment, fixed immediately with mercuric chloride and stained with bromophenol blue. After microscopical analysis, 74 protozoan genera were identified and the Ciliophora were dominant in the majority of the environments. The Stichotrichia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciliates; Amoebae; Plankton; Environmental variables; Freshwater.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400152

Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)
Provedor de dados: 52
Autores: Pereira,Luci Cajueiro Carneiro; Jiménez,José Antonio; Koening,Maria Luise; Porto Neto,Fernando F.; Medeiros,Carmen; Costa,Rauquírio Marinho da.
A study of the structure of the plankton community along the coastal zone of the Casa Caiada-Rio Doce area (Pernambuco, Brazil) is presented. The results obtained indicated that in the protected zones the water presented high turbidity, high temperature, low salinity and high nutrient and oxygen rates. All of these conditions were responsible for the reduction in plankton diversity and an increase in the biomass of the most opportunistic (r-strategist) species e.g. Gyrosigma balticum and Bacillaria paxillifera (Phytoplankton) and Euterpina acutifrons (Zooplankton). The differences found with respect to others area studies performed in pristine conditions indicated that plankton structure could be used as an environmental health indicator and that, in this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plankton; Sheltered areas; Environmental indicators.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800018

Hydrology, plankton, and corals of the Maracajaú reefs (Northeastern Brazil): an ecosystem under severe thermal stress
Provedor de dados: 52
Autores: Mayal,Elga Miranda; Neumann-Leitão,Sigrid; Feitosa,Fernando Antônio do Nascimento; Schwamborn,Ralf; Silva,Tâmara de Almeida e; Silva-Cunha,Maria da Glória Gonçalves da.
This study provides baseline information on the hydrological conditions and on the coral and plankton communities at the Maracajaú reef ecosystem (Northeastern Brazil). Studies were performed from February to June 2000, covering the transition from dry to rainy season. In this area, there is an offshore coral reef formation, where corals were observed in loco; the water samples were collected to obtain the hydrological and plankton data. Six scleractinian species were identified. Stable isotope analysis on the carbonate fraction of Favia gravida fragments showed that these corals were under severe thermal stress. Chlorophyll-a varied from 1.1 to 9.3 mg m-3, with higher values during the rainy season. Average zooplankton wet weight biomass were 117.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coral reefs; Hydrology; Plankton; Thermal stress; Human impacts.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300019