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Article

Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake

1
Université de Sfax, Laboratoire Biodiversité Marine et Environnement (LR18ES30), Route soukra Km 3,5, B.P. 1171, Sfax CP 3000, Tunisia
2
National Institute of Oceangr. & Fisheries. Fish Research Station ElKanater ElKhairia, Cairo 11435, Egypt
3
Environment & Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait
4
Regional Organization for the Protection of the Marine Environment, P.O. Box 26388, 13124 Safat, Kuwait
5
Laboratory of Zoogeography and Fauna, Department of Biological and Environmental Sciences and Technologies, University of the Salento, 73100 Lecce, Italy
*
Author to whom correspondence should be addressed.
Water 2019, 11(2), 363; https://doi.org/10.3390/w11020363
Received: 4 December 2018 / Revised: 1 February 2019 / Accepted: 14 February 2019 / Published: 20 February 2019
The copepod assemblages and abiotic parameters were investigated at 11 stations in a large coastal lake (Lake Manzalah, Nile Delta) from 2009–2010 in order to verify any impacts of eutrophication and salinity on the copepod species composition. The environmental conditions and the copepod assemblages appeared to have changed in comparison with previous studies, possibly because of increasing eutrophication and invasions of non-indigenous species (NIS). The aim of the present study was the identification of species which can be used as ecological indicators of high trophic status. Among the nine copepod species of Lake Manzalah, Acartia tonsa, Mesocyclops ogunnus, and Apocyclops panamensis were reported for the first time. Acartia tonsa, a well-known NIS for the Mediterranean, numerically dominated the copepod assemblages in some portions of the lake. The distribution of Acanthocyclops trajani and Thermocyclops consimilis was insensible to eutrophication because they can stand high levels of nutrients and hypoxia. Compared with previous reports, the copepod assemblage of Lake Manzalah was richer in species. The invasions of NIS, in addition to the heterogeneous progress of eutrophication in the lake, created an environmental mosaic with many species in total, but with single areas suitable for only a small number of them. View Full-Text
Keywords: ecological indicators; brackish waters; Copepoda; Nile Delta; hypertrophic state ecological indicators; brackish waters; Copepoda; Nile Delta; hypertrophic state
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MDPI and ACS Style

Annabi-Trabelsi, N.; El-Shabrawy, G.; Goher, M.E.; Subrahmanyam, M.N.V.; Al-Enezi, Y.; Ali, M.; Ayadi, H.; Belmonte, G. Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake. Water 2019, 11, 363. https://doi.org/10.3390/w11020363

AMA Style

Annabi-Trabelsi N, El-Shabrawy G, Goher ME, Subrahmanyam MNV, Al-Enezi Y, Ali M, Ayadi H, Belmonte G. Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake. Water. 2019; 11(2):363. https://doi.org/10.3390/w11020363

Chicago/Turabian Style

Annabi-Trabelsi, Neila, Gamal El-Shabrawy, Mohamed E. Goher, Madhavapeddi N.V. Subrahmanyam, Yousef Al-Enezi, Mohammad Ali, Habib Ayadi, and Genuario Belmonte. 2019. "Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake" Water 11, no. 2: 363. https://doi.org/10.3390/w11020363

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