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Registros recuperados: 236
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210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea) ArchiMer
Strady, Emilie; Harmelin-vivien, Mireille; Chiffoleau, Jean-francois; Veron, Alain; Tronczynski, Jacek; Radakovitch, Olivier.
The transfer of 210Po and 210Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210Po and 210Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210Po, 210Pb activity concentrations and 210Po/210Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is...
Tipo: Text Palavras-chave: Po-210; Pb-210; Phytoplankton; Zooplankton; Pelagic fishes; Mediterranean Sea.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00255/36609/35264.pdf
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A NEW SPECIES OF Halicyclops (Copepoda, Cyclopoida, Halicyclopinae) FROM AN ESTUARINE SYSTEM OF THE CARIBBEAN COAST OF COLOMBIA Acta biol.Colomb.
FUENTES-REINÉS,Juan M.; SUÁREZ-MORALES,Eduardo.
ABSTRACT Plankton samples obtained from the Ciénaga Grande de Santa Marta, an extensive estuarine system in northern Colombia, yielded adult male and female specimens of an undescribed halicyclopine cyclopid copepod of the genus Halicyclops. Cyclopid copepods are frequently found in freshwater and transitional habitats. Members of the subfamily Halicyclopinae are chiefly brackish water forms with a few freshwater species. The new species described herein is assignable to the group of species "F" of Halicyclops (sensu Pesce, 2018) with a 2333 exopodal spine formula. Currently, this group contains five species and one subspecies. Halicyclopsgutierrezi sp. n. can be distinguished from its known congeners by the absence of an anal operculum, the relative...
Tipo: Journal article Palavras-chave: Microcrustaceans; Mangroves; Microcrustaceans; Shallow water; Taxonomy; Zooplankton.
Ano: 2020 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000100014
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A null model for explain crustacean zooplankton species associations in central and southern patagonian in land waters OceanDocs
De los Rios, Patricio.
Los ensambles zooplanctónicos en cuerpos de agua de la zona centro y sur de la Patagonia chilena se caracterizan por su alto endemismo y un relativo bajo número de especies lo cual se debería principalmente a la oligotrofía y niveles de conductividad de estos ambientes. El objetivo del presente trabajo consistió en analizar información publicada y sin publicar sobre crustáceos zooplanctónicos en lagos y lagunas de la zona central y sur de la Patagonia (44 - 53g S). A estos datos se les estimó la razón especies / género, y se aplicó un modelo nulo basado en co-ocurrencia de especies mediante una matriz de presencia y ausencia de especies, con la intención de determinar ausencia de factores reguladores de las asociaciones de especies. Dentro de este mismo...
Tipo: Journal Contribution Palavras-chave: Zooplankton; Assemblages; Lakes; Ponds; Crustaceans.
Ano: 2008 URL: http://hdl.handle.net/1834/4161
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A report on the marine cladoceran Evadne spinifera Müller (Crustacea, Branchiopoda) in Guanabara Bay, Rio de Janeiro, Brazil Zoologia
Marazzo,Andrea; Valentin,Jean L..
This note relates the occurrence of Evadne spinifera Müller, 1867 (Crustacea, Branchiopoda) in Guanabara Bay, Rio de Janeiro State, Brazil. The samples were obtained by vertical tows with a 200µm mesh-size conical net at different times over a four day period in September, 1995. Evadne spinifera densities was always low.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cladocera; Evadne spinifera; Zooplankton; Guanabara Bay; Brazil.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400017
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A simple method for subsampling zooplankton OMA
Persoone, G..
A simple and accurate method for subsampling zooplankton suspensions is described for which one only needs graduated plastic syringes and penicillin vials with a rubber stopper.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sampling; Sampling methods; Zooplankton.
Ano: 1972 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3455
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Abundance and instantaneous transport of Petrolisthes armatus (Gibbes, 1850) planktonic larvae in the Catuama inlet, Northeast Brazil Anais da ABC (AABC)
Melo Júnior,Mauro de; Schwamborn,Ralf; Neumann-Leitão,Sigrid; Paranaguá,Maryse N..
The influence of tidal and diel changes on the exchange of Petrolisthes armatus planktonic larvae was studied at the Catuama inlet, which represents an intermediate system of marine and estuarine environments in the Northeast Brazil. To characterize the larval abundance and vertical distribution, samplings were carried out in August 2001 at neap tide and 3 stations, with 3 hours interval over 24 hours. Samples were taken at three or two depths at each station, with a plankton pump coupled to a 300 µm mesh size net. Petrolisthes armatus zoea I and II showed a mean of 26.3 ± 83.6 and 12 ± 38.8 ind m-3, respectively. During flood tides, the larvae were more concentrated in the midwater and surface, which avoided the transport to internal regions. In contrast,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Northeast Brazil; Decapod larvae; Petrolisthes armatus; Estuarine inlet; Transport; Zooplankton.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100009
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Abundancia y distribución del ictioplancton, fito y zooplancton en el mar ecuatoriano en abril de 1995 OceanDocs
Luzuriaga de Cruz, M.; Elías, E.; Flores, M.E..
El presente trabajo trata de la distribución de la abundancia de huevos y larvas de peces en relación con la abundancia del zooplancton y fitoplancton colectado en 13 estaciones muestreadas a bordo del B/I TOHALLI durante el crucero pelágico-oceanográfico realizado en abril de 1995. Se analizó un total de 12820 huevos de peces. (10m²)¹ y 5145 larvas de peces (10m²)¹. La mayor abundancia de huevos y larvas de peces se localizó al este de las Islas Galápagos, en las estaciones 1P y 10, situadas en los extremos norte y sur del área de muestreo a la altura de la Isla San Cristóbal, con 5226 huevos (10m²)¹ y 1042 larvas (10m²)¹, respectivamente, mientras que la menor abundancia se localizó también al este de la Islas Galápagos, en las estaciones 7 y 5 con 109...
Tipo: Journal Contribution Palavras-chave: Abundance; Ichthyoplankton; Phytoplankton; Zooplankton; Cruises; Fish eggs; Fish larvae; Phytoplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1998 URL: http://hdl.handle.net/1834/2278
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Acumulación de metales pesados en microcrustáceos planctónicos provenientes de un embalse contaminado por relaves mineros, embalse Rapel (34° 10' S - 71° 29' W), Chile OceanDocs
Mercado Leal, S.I..
El embalse Rapel, es un cuerpo de agua que está siendo sometido a un fuerte impacto antropogénico, por lo que evidencia severos signos de eutrofización. Esto último debido a que el embalse se ha transformado en el cuerpo receptor de una gran diversidad de efluentes (industriales, agrícolas y domésticos), que evacuan sus descargas sin ningún tipo de tratamiento. A lo cual se le debe agregar la recepción de aguas provenientes de los relaves de la mina de cobre “El Teniente”. Con el objetivo de determinar la presencia y acumulación de metales pesados en el agua y en los organismos zooplanctónicos, durante el mes de Octubre del 2003 se tomaron muestras de agua y de ejemplares de Ceriodaphnia dubia, Bosmina chilensis y Diaptomus diabolicus. Como especies...
Tipo: Theses and Dissertations Palavras-chave: Heavy metals; Freshwater pollution; Water reservoirs; Water analysis; X-ray spectroscopy; Zooplankton; Man-induced effects.
Ano: 2004 URL: http://hdl.handle.net/1834/4899
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An introduction to the Zooplankton of the Benguella current Region OceanDocs
Gibbons, M.J..
The Benguella Current Large Marine Ecosystem (BCLME) is situated off the west coast of southern Africa and is one of the four eastern boundry upwelling systems in the world. It's high level of primary productivity supports an important global resevoir of biodiversity and biomass of zooplankton, fish, seabirds,....
Tipo: Other Palavras-chave: Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 1997 URL: http://hdl.handle.net/1834/1252
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Análisis de la distribución y abundancia del ictioplancton y zooplancton acompañante en el Golfo San Matías en noviembre de 1992 OceanDocs
Mercado, L.; Pose, M.; Tesolin, G.; Villar, C..
Realizado en el INIDEP (Instituto Nacional de Investigación y Desarrrollo Pesquero- Mar del Plata, Argentina)
Tipo: Theses and Dissertations Palavras-chave: Ichthyoplankton; Zooplankton; Fish larvae; Abundance; Environmental conditions; Zooplankton; Fish larvae; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1993 URL: http://hdl.handle.net/1834/3550
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Aporte al conocimiento del zooplancton de agua dulce y estuarina del río Guayas. Guayaquil - Ecuador OceanDocs
Luzuriaga de Cruz, M..
El presente trabajo corresponde al análisis de zooplancton colectado en cinco estaciones localizadas en el río Guayas. La primera estación estuvo situada 10 km. río arriba de la confluencia del río Babahoyo con el río Daule, en un pozo acuífero. Las otras estaciones se situaron en cuatro sitios consecutivos a lo largo del río Guayas. En este trabajo se han identificado 10 especies: Brachionus plicatilis (O. F. Muller) (Rotifera), Alona cambouei Guerne and Richard, 1893; Moina micrura Kurz, 1874 (Cladocera); Acartia tonsa Dana, 1848; Oithona dissimilis Linberg, 1940; Oithona neotropica Herbs, 1967; Oithona oligohalina Fonseca o Bjornberg, 1976; Mesocyclops longisetus (Thiebaud, 1914) y Pseudodiaptomus longispinosus Chad, 1989 (Copepoda). Las especies...
Tipo: Journal Contribution Palavras-chave: Zooplankton; Fresh water; Geographical distribution; Rivers; Estuaries; Brackish water; Zooplankton; Geographical distribution; Rivers; Estuaries; Brackish water; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1049.
Ano: 1998 URL: http://hdl.handle.net/1834/2295
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Approche systémique des potentialités de production secondaire pélagique: inférences de fluctuations interannuelles ArchiMer
Bergeron, Jean-pierre.
Une méthode d'estimation des potentialités de production secondaire pélagique est proposée, tirant profit de l'homologie interspécifique de certains processus métaboliques élémentaires. Elle consiste à mesurer l'activité de l'aspartate transcarbamylase (A TC), enzyme contribuant à la biosynthèse de composants de base des acides nucléiques, sur des échantillons du peuplement mésozooplanctonique total. L'exécution de onze campagnes au cours des périodes printanières de trois. années consécutives, de 1978 à 1980, a permis d'appliquer cette approche à un écosystème néritique de région tempérée, situé au large de la côte nord de la Bretagne (Manche occidentale). Les onze séries de données ainsi acquises prêtent à caractériser les traits essentiels de...
Tipo: Text Palavras-chave: Aspartate transcarbamylase; Écosystème pélagique; Manche; Production; Zooplancton; Aspartate transcarbamylase; Pelagic ecosystem; English Channel; Production; Zooplankton.
Ano: 1986 URL: https://archimer.ifremer.fr/doc/00072/18315/15884.pdf
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Aspectos ecológicos del plancton en las riberas del humedal Isla Santay, Río Guayas durante los años 2000 y 2002 OceanDocs
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
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Biochemical substrates expenses and respiration at short-term starvation of marine planktonic animals ArchiMer
Pavlova, Z; Morozova, A; Gaudy, R; Shchepkin, V.
One of the most important indices at estimation of productivity characteristics of hydrobionts is oxygen consumed in the process of respiration. Usually respiration (standard metabolism) is measured in small-volume respirometres (30-50 ml) where animals' activity is considerably restricted. It may underestimate respiration in comparison to natural one. Therefore respirometres of larger volume were used. Simultaneously under same conditions we tried to estimate energy requirements by expense of main biochemical components of organic matter (lipids, protein, glycogen). Results were used to calculate energy budget and to compare energy expenditures, measured according to consumed oxygen and tissue substrates expense.
Tipo: Text Palavras-chave: Euchirella curticauda; Pleuromamma abdominalis; Scolecithrix danae; Ostracoda; Copepoda; Starvation; Oxygen consumption; Biochemical composition; Zooplankton; Energy budget; Respiration; Biological production.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1520.pdf
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Biodiversidad y distribución temporal de zooplancton gelatinoso en bahía Fildes OceanDocs
Mora, G..
El proyecto “Biodiversidad y distribución temporal de zooplancton gelatinoso en bahía Fildes”, perteneciente al Programa de Apoyo a Tesis en Temas Antárticos, organizado por el INACH, aportará información sobre la fluctuación temporal, de corto plazo, de los principales grupos de zooplancton gelatinoso (medusas, sifonóforos, quetognatos, ctenóforos y salpas) y su asociación con las variables ambientales de temperatura y salinidad.
Tipo: Journal Contribution Palavras-chave: Zooplankton; Biodiversity; Antarctica.
Ano: 2011 URL: http://hdl.handle.net/1834/4502
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Bioecología de huevos y larvas de peces Cetengraulis mysticetus (Chuhueco), Opisthonema sp. (Pinchagua) y Anchoas en la reserva ecológica manglares Cayapas-Mataje - Ecuador OceanDocs
Luzuriaga de Cruz, M.; Solano Ch., F.; Cevallos, D..
La presente investigación es parte del Convenio de Cooperación Técnica entre el Fondo Ecuatoriano Populorum Pregressio (FEPP) y el Instituto Nacional de Pesca (INP) y tiene como fin principal el estudio de huevos y larvas de chuhueco (Cetengraulis mysticetus), anchoas (Anchoa sp., Anchovia sp. y Engraulis) y pinchagua (Opisthonema sp.) en relación con abundancia y distribución de la microfauna zooplanctónica presente en los esteros durante el período comprendido entre abril del 2000 y diciembre del 2001.
Tipo: Journal Contribution Palavras-chave: Zooplankton; Ichthyoplankton; Eggs; Larvae; Mangroves; Zooplankton; Eggs; Larvae; Mangroves; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_4204; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 2007 URL: http://hdl.handle.net/1834/2404
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Biomass, metabolism and nutrition of zooplankton in the Gulf of Lions (NW Mediterranean) ArchiMer
Gaudy, R; Youssara, F; Diaz, F; Raimbault, P.
Zooplankton biomass was measured at 20 stations located along five coastal-offshore transects in the Gulf of Lions (NW Mediterranean) during spring 1998 and winter 1999, using two nets equipped with 200 and 80 Pm mesh. Biomass was twice as abundant in spring. It increased toward the coast and the west of the gulf and was positively correlated to chlorophyll, primary production and organic particulate matter and negatively to temperature and salinity. The enrichment effect of Rhone river input and the oligotrophic influence of the north Mediterranean current (NMC) were the main distribution factors of zooplankton biomass. Higher biomass was obtained in coastal stations with the 80 mum net, which sampled more efficiently young larval stages and nauplii....
Tipo: Text Palavras-chave: Zooplankton; Métabolisme; Cycle saisonnal; Golfe du Lion; Zooplankton; Metabolism; Seasonal cycle; Gulf of Lions.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00321/43262/42993.pdf
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Bio-oceanografía en el entorno de la isla de La Plata, durante agosto/2001 OceanDocs
Torres, G.; Calderón, T.; Calderón, G.; Franco, V.; Correa, C..
El objetivo de la presente investigación, fue dar un comprensivo entendimiento de las condiciones bio-oceanográficas del fitoplancton-zooplancton-ictioplancton, y las interacciones con el medio circundante (físico, químico), procesos que son complicados cuando involucran aspectos hidrográficos costeros como áreas de afloramiento, áreas de pesca y áreas de soporte alimentario para los diferentes recursos marinos costeros planctónicos-bentónicos y aves-mamíferos marinos.
Tipo: Journal Contribution Palavras-chave: Marine ecology; Phytoplankton; Zooplankton; Ichthyoplankton; Upwelling; Biological production; Marine resources; Cruises; Oceanic islands; Coastal zone; Marine resources; Phytoplankton; Zooplankton; Biological production; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_28012; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2004 URL: http://hdl.handle.net/1834/2318
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Biophysical isopycnic-coordinate modelling of plankton dynamics in the Arabian Sea OceanDocs
Idrisi, N.; Romanou, A.; Olascoaga, M.J..
A Nutrients-Phytoplankton-Zooplankton-Detritus (NPZD) ecosystem model is coupled to the Miami Isopycnic-Coordinate Ocean Model (MICOM) to study planktondynamics in the Arabian Sea. Experiments oriented to testing the NPZD-MICOM coupled model sensitivity to variations in several parameters are performed. Particular attention is paid to the rates of detritus sinking and maximum phytoplankton growth rate. The coarse features of the blooms are captured by all the experiments considered, and agree with earlier models for the biological activity of the region. Intensity, duration, and peaks of the blooms are found to be quite sensitive to the parameter choices. The existence of an offshore deep chlorophyll maximum in the model is found to be closely related to...
Tipo: Journal Contribution Palavras-chave: Phytoplankton; Zooplankton; Detritus; Biophysics; Modelling; Arabian Sea; Http://aims.fao.org/aos/agrovoc/c_565.
Ano: 2005 URL: http://hdl.handle.net/1834/271
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Calculations of results in grazing experiments using the counting method OMA
Tackx, M.L.M.; Van de Vrie, E.M..
Different formulae used in the literature for calculation of ingestion rates are reviewed. Their applicability is discussed in relation to two criteria: the occurrence of saturation of the feeding and/or growth of the food particles. It is shown by simulations that the differences in results obtained by calculating ingestion following a linear or an exponential model are restricted to a few percent. Calculation of ingestion rates by substantial over- or underestimation depending on the growth constant of the food particles and the grazing time.The formula I = Vk(C<sub>zt</sub>C<sub>zo</sub>e<sup>kt</sup>)/N(I-e<sup>kt</sup>) is proposed for the calculation of ingestion rates under saturated circumstances.It...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food intake; Food intake; Grazing; Ingestion; Mathematical analysis; Measuring devices; Phytoplankton; Zooplankton.
Ano: 1985 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3212
Registros recuperados: 236
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