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| Registros recuperados: 71 | |
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| 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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| Abdel-Aziz, N.E.. |
| The variations of zooplankton structure and abundance were studied at short time intervals in the northern part of the West Naubaria Canal, near the sea side, based on weekly sampling from May 2002 to May 2003 .The community represented high species richness (120 species), and relatively low population density ( annual average 31340 organisms/m.3). Freshwater forms were the major representatives (68 species) of the community, including the sea side station. However, several marine species were reported inside the canal at a long distance from the sea. The community structure showed wide weekly variations (4-29 species), while between stations the differences were small. Relative to salinity in the canal, diversity index sustained the highest value (annual... |
| Tipo: Journal Contribution |
Palavras-chave: Naubaria Canal; Salinity; Zooplankton; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1300 |
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| Pérez Seijas, G.M.; Ramirez, F.C.; Viñas, M.D.. |
| A study was made on numercial and biomass variations of the zooplankton of the San Jorge Gulf (Argentina), based on samples from five cruises performed during 1985. The sampling was included within a proagramme for the biology and fishery evaluation of the shrimp Pleoticus muelleri. San Jorge, a large gulf of the northern patagonian shelf, comprises major fishery activities. Some fish species of economical importance depend on copepods for their feeding, like anchovy (Engraulis anchoita)or partially on middle-size plankters, like mackerel (Scomber japonicus). As a way for determining the trophic disponibility at the gulf, a study was made in order to express the numerical abundance of copepods, euphausiids and amphipods and other items of lesser... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Biomass; Size distribution; Population density; Zooplankton; Biomass; Population density; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 1987 |
URL: http://hdl.handle.net/1834/2006 |
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| Medellín-Mora, J.; Campos, N.H.; Franco-Herrera, A.; Jaimes, J.C.. |
| Se estudió la composición de las larvas zoea de crustáceos decápodos de la región nororiental del Caribe colombiano mediante arrastres oblicuos de zooplancton realizados con un sistema de red bongo durantre julio-agosto, noviembre-diciembre de 1997 y marzo-abril de 1998. De las muestras colectadas, se separaron las zoeas y con base en bibliografía especializada se identificaron hasta el nivel taxonómico de familia. Se describieron 30 familias de decápodos con base en caracteres externos como la forma del cuerpo, ojos, antenas, anténulas, caparazón, abdomen, telson, número de apéndices toráxicos y segmentos del abdomen, así como la presencia, ausencia y conteo de espinas en cada uno de éstos. De esta forma, se elaboraron claves taxonómicas, con el fin de... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Composition; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3580 |
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| Mageed, A.A.A.. |
| The northern lakes of Egypt have always acted as a buffer zone between the drainage system in the Nile Delta and the Mediterranean Sea. Most of these lakes are exposed to high inputs of industrial and domestic wastewater as well as agricultural drainage water, like Lake Manzala, which influence the living organisms on the long run. Samples of zooplankton were collected monthly from ten stations among Lake Manzala showing the different microhabitat of the lake. A one year monitoring has been carried out. Lake Manzala has been changed from marine ecosystem to eutrophic, nearly, freshwater system with the dominance of rotifers (cal ~ 97%). Twenty newly recorded zooplankton taxa were found for the first time in the lake during the study, while thirteen taxa... |
| Tipo: Journal Contribution |
Palavras-chave: Field Study; Zooplankton; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1901 |
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| Missaoui, H.; El Abed, A.; M'rabet, R.; Romdhane, M.S.; Zarrad, R.; Jarboui, O.. |
| Monthly variability of zooplankton and ichthyoplankton abundance and composition were studied in 6 stations in the Gulf of Tunis between February 2003 and January 2004. Plankton trawls were horizontal, in surface and at night. Study area seems to be influenced by climatic conditions and the outflow of Majreda River that affect the surface temperature and salinity. Copepods, with many abundance peaks in the year, formed the most abundant group (84%) followed by cladocerans (8%) and chaetognaths (3%). The appendicularians, cladocerans and medusae had swarms in the summer, the creseis and the chaetognths in the autun and the zoae larvae in the spring. The highest fish spawning periods was in summer then the highest larva abundance was in winter and... |
| Tipo: Journal Contribution |
Palavras-chave: Community composition; Fish larvae; Ichthyoplankton; Temporal variations; Zooplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4242 |
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| Lembeye, Georgina. |
| During the expeditions Cimar - Fiordos 2, 3 and 4 (1996, 1997 and 1999), samples of marine sediments were collected in Southern Chile, between Melinka (Lat. 43° 45' S) and Beagle Channel (Lat. 54° 56' S) to study the distribution and abundance of dinoflagellate cysts, particularly the toxic dinoflagellate Alexandriurn catenella. Samples were collected from 33 stations at depths of 1 to 15 meters. The study included photographic record and taxonomic identification of cysts to genus and, whenever possible, to species, with emphasis on the identification of cysts of A. catenella. Cysts from samples collected in cruises 3 and 4, were incubated in f/2-Se culture medium at 13 °C with controlled photoperiod (14:10, L:D), to induce germination and confirm species... |
| Tipo: Journal Contribution |
Palavras-chave: Sediments; Quantitative distribution; Cysts; Zooplankton; Cysts; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_15490. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4126 |
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| Registros recuperados: 71 | |
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