Consulta: subjectFacets:"Hydrobiology Studies"
Registros recuperados: 3
Data/hora: 01/06/2024 16:23:04

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

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

Seasonal dynamics of phytoplankton community in the bitter lakes and temsah lake
Provedor de dados: 20
Autores: Nassar, M.Z.; Shams El-Din, N.G.
Water and phytoplankton samples were sampled on a seasonally basis, from autumn 2002 to summer 2003 at five stations located in Bitter Lakes and four at Temsah Lake. A total of 116 taxa were identified, among which 72 taxa of diatoms, 16 dinoflagellates, 14 chlorphytes, 11 cyanophytes, two euglenophytes and one silicoflagellate species. Bitter Lakes were more diversified than Temsah Lake, although the highest population density was recorded at Temsah Lake. A total of 108 taxa were identified in Bitter Lakes among which 68 taxa of diatoms, 15 dinoflagellates, 11 chlorophytes, 11 cyanophytes two euglenophytes and one silicoflagellate species, while 102 taxa were identified among which 60 taxa of diatoms, 14 dinoflagellates, 14 chlorophytes, 11 cyanophytes,...
Tipo: Journal Contribution
Palavras-chave: Hydrobiology Studies; Biodiversity Phytoplankton Phytoplankton http://aims.fao.org/aos/agrovoc/c_13344.
Ano: 2006
URL: http://hdl.handle.net/1834/1443