Seasonal changes and abundance of rotifers in a shallow Manzalah lake (Egypt)

Manzalah lake is a eutrophic coastal lake that has been flooded by excessive agriculture drainage over the last 30 years, changing its ecological status. Fifty-two taxa of rotifers were identified, of these Brachionus angularis, Brachionus plicatilis, Keratella quadrata, Polyarthra vulgaris and Sync...

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Published in:Ecohydrology & Hydrobiology 2014, Vol.14 (3), p.243-252
Main Authors: El-Shabrawy, Gamal M., Germoush, Mousa O.A.
Format: Article
Language:English
Subjects:
Brachionus angularis
Brachionus plicatilis
Keratella quadrata
Marine
Polyarthra vulgaris
Rotifera
Shallow Nile Delta lake
Synchaeta oblonga
Zooplankton structure
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description Manzalah lake is a eutrophic coastal lake that has been flooded by excessive agriculture drainage over the last 30 years, changing its ecological status. Fifty-two taxa of rotifers were identified, of these Brachionus angularis, Brachionus plicatilis, Keratella quadrata, Polyarthra vulgaris and Synchaeta oblonga were abundant. The maximum population density (lake average 490individualsL−1) occurred in winter, while the taxa were low in abundance during summer and autumn. The participation of rotifers has increased from 16 species, forming 24% of the total zooplankton in 1971–1973 to 52 species, accounting for 85.1% now. This was concurrent with the progressive dulcification and eutrophication of the lake water.
doi_str_mv 10.1016/j.ecohyd.2014.06.001
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source ScienceDirect Journals
subjects Brachionus angularis
Brachionus plicatilis
Keratella quadrata
Marine
Polyarthra vulgaris
Rotifera
Shallow Nile Delta lake
Synchaeta oblonga
Zooplankton structure
title Seasonal changes and abundance of rotifers in a shallow Manzalah lake (Egypt)
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