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| Registros recuperados: 242 | |
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| 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 |
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| Andrade Ruíz, C.E.. |
| Se analizaron los sifonóforos colectados en las muestras superficiales de zooplancton alrededor de la Isla Santa Clara duarnte septiembre y noviembre del 2007, identificándose 15 especies de sifonóforos del suborden Calycophorae y una especie del suborden Cystonectae, todos ellos registrados por primera vez para aguas tropicales alrededor de la Isla Santa Clara. Las especies más abundantes en la fase de flujo fueron Muggiacea atlantica (15.3%), Chelophyes appendiculata (13.3%) y en reflujo fueron Chelophyes appendiculata con 22.6%, Lensia hotspur con 15.5%, Diphyes dispar (11%) y Lensia multicristata con 10.9%. Las especies restantes fueron escasas y su abundancia relativa fue inferior al 8%. |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Abundance. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4709 |
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| Ginawi, Amjed Ginawi Ahmed. |
| Marine zooplankton and some physical parameters (water temperature and transparency) and chemical parameters (salinity, pH and phosphate, nitrate, nitrite and oxygen) were studied from November 2009 to October 2010, at six stations around Port Sudan. The stations were: Tires Factory (station 1), Fish market (Station 2), Open Sea (Station 3), the harbour entrance (Station 4), the Faculty of Marine Sciences and Fisheries (Station 5) and Sea Land (Station 6). Marine zooplankton was sampled, preserved, stained and identified according to the standard methods. The physical and chemical parameters were determined following standard methods. Fifteen groups of zooplankton (calanoida copepods, cyclopoida copepods, branchyuran zoea, fish eggs, cladocerans,... |
| Tipo: Theses and Dissertations |
Palavras-chave: Zooplankton. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/5082 |
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| Soto, Doris; De los Ríos, Patricio. |
| La Patagonia de Chile posee muchos ecosistemas acuáticos sin contaminación, dentro de estos ecosistemas hay muchos lagos y lagunas prístinos. En este estudio, se analizó información colectada entre los años 1989 y 1990 (sin publicar y sin publicar) sobre lagos y lagunas del Parque Nacional Torres del Paine, un área sin contaminar en el sur de Chile (51° S). Se aplicó un análisis de componentes principales considerando parámetros químicos, riqueza de especies zooplanctónicas y biomasa. Los resultados denotaron que las concentraciones de cationes (Ca, Na y Mg), cloruros, seston y clorofila, junto con biomasa de zooplancton y riqueza de especies zooplanctónicas fueron las principales variables que contribuyeron al modelo obtenido. Según este modelo, se... |
| Tipo: Journal Contribution |
Palavras-chave: Lakes; Ponds; Chlorophylls; Zooplankton; Nutrients; Http://aims.fao.org/aos/agrovoc/c_5274. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4167 |
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| Osore, M.; Mwaluma, J.; Kamau, J.; Wawiye, P.. |
| Samples were collected monthly at four fixed stations in Mida creek from May 1996 to April 1997, in order to determine the species composition, abundance and diversity of phytoplankton and zooplankton collected with 20- and 332-mm mesh size plankton nets respectively. Sampling also included measurement of salinity and temperature. Peaks in phytoplankton abundance occurred in May and January, following the long rains in April–May and the short rains in November–December. Zooplankton densities followed the phytoplankton peaks with the main peak occurring in February after the major phytoplankton bloom. Similarly, smaller peaks occurred in May and March. Copepods dominated the zooplankton forming up to 60% of total species composition. High zooplankton... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Midacreek; Phytoplankton; Abundance; Kenya; Zooplankton. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/949 |
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| Osore, M.; Fiers, F.; Daro, M.H.. |
| The taxonomic composition, abundance and spatio-temporal distribution of copepods were analysed from monthly zooplankton samples collected in Makupa creek and Mombasa Harbour (Makupa creek was until recently subjected to considerable dumping of domestic and industrial waste). At least 51 copepod species belonging to 38 genera in the families Calanoida (25), Harpacticoida (5), Poecilostomatoida (7) and Cyclopoida (1) were identified. The most common genera were Acartia, Acrocalanus, Corycaeus, Oncaea and Oithona. Copepods bloomed in the wet months of November and April (75 to 158/m3). Abundance was consistently high near the creek mouth and low within the creek enclosure. Copepod diversity (H’) was slightly higher (2.00 to 2.57) during September, November,... |
| Tipo: Journal Contribution |
Palavras-chave: Mombasa; Marine pollution; Zooplankton; Copepod culture; Monsoons. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1081 |
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| This survey focused on the outer shelf and deep water slope off Ghana and the catch-distribution analyses were therefore performed for four depth strata, outer shelf (< 100 m), upper slope (100-300 m) mid slope (300-600 m) and lower slope (>600 m). In the analyses the “Demersal” group includes commercially important families as Sciaenidae, Haemulidae (=Pomadasyidae), Serranidae, Sparidae and Lutjanidae, and especially in deeper waters the Merluccidae, Macrouridae and Moridae. The Pelagic group includes Engraulidae, Clupeidae, Carangidae, Scombridae, Sphyraenidae, Gempylidae and Trichiuridae (the latter family is actually mainly benthopelagic). For the analysis the “other” group includes all species not accounted for in the groups listed. |
| Tipo: Report |
Palavras-chave: Demersal fish; Zooplankton; Distribution; Pelagic fish; Lutjanidae; Macrouridae. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4996 |
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| Ortega, D.. |
| Durante el verano austral, se efectuó la VII Expedición Antártica Ecuatoriana, a bordo del B/I Orión, perteneciente a la Armada del Ecuador. Entre los meses de enero y febrero de 1998, en la Ensenada Guayaquil y Bahía Chile (Isla Greenwich), se colectaron y analizaron muestras de macrozooplancton obtenidas de arrastres superficales con redes tipo cónica simple de 500μ m, con la finalidad de conocer la distribución y composición del zooplancton. Las salpas fueron los organismos más representativos con el 46%, en segundo lugar estuvieron los copépodos 17% y quetognatos 15%, en la Ensenada Guayaquil donde también se presentó la mayor heterogeneidad zooplanctónica, registrándose la mayor distribución al oeste, próximo a la Isla Dee. En Bahía Chile, la... |
| Tipo: Journal Contribution |
Palavras-chave: Distribution; Composition; Temperature; Salinity; Zooplankton; Distribution; Zooplankton; Temperature; Salinity; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_7657; Http://aims.fao.org/aos/agrovoc/c_6751. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3851 |
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| 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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| Perrotta, R.G.; Madirolas, A.; Viñas, M.D.; Akselman, R.; Guerrero, R.A.; Sánchez, M.F.; López, F.; Castro Machado, F.; Macchi, G.J.. |
| In August 1996 acoustic methods were employed to estimate mackerel (Scomber japonicus) abundance in the Buenos Aires, Argentina shelf area of "El Rincón" (4,287 mn2), located between 39°- 40° 30' S. Results showed a biomass estimate of 77,260 t. ASIMRAD EK-500 equipment operated with a 38 KHz split-beam transducer was used. Midwater fishing trawls were employed to identify echotraces and to collect mackerel samples.Trawls 4 and 5 were the most successful. Samples included only adult fish (310-470 mm Lt and ages ranging 2-11). Length and weight growth parameters and mortality rates were estimated. Analysis of the stomach contents revealed that mackerel was feeding exclusively on zooplankters over 2 mmlength. The analysis of the characteristics (dimensions... |
| Tipo: Journal Contribution |
Palavras-chave: Abundance; Biomass; Population structure; Zooplankton; Environmental conditions; Echo surveys; Biomass; Population structure; Zooplankton; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/2529 |
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| Ortega, D.; Elías, E.; Zurita, C.. |
| Between the 6 and 13 of september of 1995, a study about the abundance, distribution of fish eggs and larvae in relation of the abundance and presence of the zooplankton in the Gulf of Guayaquil was carried out. The biggest fish larvae quantity was registered at station 16, 37 and 60 with values 500 and 1000 larvae.(10 m2)-1 which position at was long. 81~'00' - 82~'00'W; lat. 01~'00'S - 3~'04'S while the fish eggs concentration was 500 eggs.(10 m2)-1 at station 21. The smalles fish larvae quantity was registered between 6 and 73 larvae.(10 m2)-1, situated long. 81~'30' - 82~'00'W - lat. 02~'40' - 00~'59'S and 01~'00' south. At north of Gulf near of Puntilla of Santa Elena, Lat. 02~'00'S - Long. 81~'00'W, in the Center of the Ecuadorian coast, near of San... |
| Tipo: Journal Contribution |
Palavras-chave: Ichthyoplankton; Zooplankton; Abundance; Geographical distribution; Zooplankton; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/2966 |
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| Viñas, M.D.; Marrari, M.; Di Mauro, R.; Cepeda, G.D.; Padovani, L.N.. |
| The information gathered in Argentine anchovy (Engraulis anchoita) Northern population assessment cruises allowed to perform studies on the zooplankton community of the Buenos Aires shelf since 1995. In this work the most relevant results as regards the taxonomy and size structure of the community, faunistic areas, and 'key' species in relation to the hydrographic conditions and frontal systems of the region are presented. Besides, the consequences those results might have on Argentine anchovy trophic ecology are analyzed. The taxonomic groups studied included copepods, cladocerans, appendicularians, chaetognaths, amphipods, and euphausiids. The multivariate analysis applied to quantitative data allowed to clearly distinguish three faunistic areas with... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Biogeography; Fauna; Fronts; Trophic relationships; Abundance; Pelagic fisheries. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5497 |
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| Registros recuperados: 242 | |
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