Composition and seasonal variation of phytoplankton community in Lake Hlan, Republic of Bénin

Arsène Mathieu Houssou; Hyppolite Agadjihouédé; Clément Agossou Bonou; Elie Montchowui

doi:10.22034/ijab.v4i6.229

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Arsène Mathieu Houssou
[email protected]
Laboratory of Hydrobiology and Aquaculture / Faculty of Agricultural Sciences / University of Abomey-Calavi, Republic of Bénin. Laboratory of Research in Aquaculture and Aquatics Biology and Ecology, School of Aquaculture of Vallée, Republic of Bénin.
Hyppolite Agadjihouédé Laboratory of Hydrobiology and Aquaculture / Faculty of Agricultural Sciences / University of Abomey-Calavi, Republic of Bénin. Laboratory of Research in Aquaculture and Aquatics Biology and Ecology, School of Aquaculture of Vallée, Republic of Bénin.
Clément Agossou Bonou Research Laboratory in Applied Biology / Polytechnic School of Abomey-Calavi / University of Abomey-Calavi, Republic of Bénin.
Elie Montchowui Laboratory of Hydrobiology and Aquaculture / Faculty of Agricultural Sciences / University of Abomey-Calavi, Republic of Bénin. Laboratory of Research in Aquaculture and Aquatics Biology and Ecology, School of Aquaculture of Vallée, Republic of Bénin.

Vol. 4 No. 6 (2016): December

Articles

December 30, 2016

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Knowledge of biodiversity of aquatic ecosystems is nowadays a challenge for global research. Phytoplankton being very important in the sustainability of ecosystems, its mastery allows the development of early monitoring and evaluation tools of the health status of aquatic environments. The study aims to make an initial inventory of phytoplankton of the lake Hlan and to evaluate the influence of hydrologic season on its dynamics. Plankton samples were collected monthly between May and December 2012 using plankton net of 30 µm size. They were then treated and species identified using light microscopy. 39 species in 7 classes (Bacillariophyceae, 18 species in 10 genera), (Cyanophyceae, 5 species in 5 genera), (Chlorophyceae, 5 species in 3 genera), (Zygnematophyceae, 3 species in 2 genera), (Trebouxiophyceae, 2 species in 2 genera) (Euglenophyceae, 4 species in 3 genera) and (Dinophyceae, 2 species in 2 genera) have been identified. The Shannon index varied between 4.8 and 5.1 bit cell-1. This shows that the ecosystem is balanced. Nevertheless, the presence of potentially toxic species requires a monitoring program for Lake Hlan.

Houssou, A. M., Agadjihouédé, H., Bonou, C. A., & Montchowui, E. (2016). Composition and seasonal variation of phytoplankton community in Lake Hlan, Republic of Bénin. International Journal of Aquatic Biology, 4(6), 378–386. https://doi.org/10.22034/ijab.v4i6.229

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