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Zooplankton Variability in 49 Shallow Tropical Reservoirs of Ivory Coast (West Africa)
Author(s) -
Aka Maryse,
Pagano Marc,
SaintJean Lucien,
Arfi Robert,
Bouvy Marc,
Cecchi Philippe,
Corbin Daniel,
Thomas Serge
Publication year - 2000
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/1522-2632(200008)85:4<491::aid-iroh491>3.0.co;2-g
Subject(s) - zooplankton , seston , abundance (ecology) , biology , eutrophication , ecology , biomass (ecology) , predation , taxon , turbidity , community structure , phytoplankton , nutrient
Zooplankton samples were collected from 49 small reservoirs of northern Ivory Coast in April 1997. Thirty taxa were identified, including 20 rotifers, 3 copepods and 6 cladocerans. The number of taxa per lake ranged between 12 to 22 and decreased with the total abundance of zooplankton. Copepods dominated standing biomass. Coinertia analysis suggested the role of seston food abundance, oxygen depletion and turbidity for zooplankton abundance and community structure. Rotifers, and particularly Brachionus angularis, Polyarthra and Filinia , were more abundant than copepods in the most eutrophic, turbid and deoxygenated reservoirs. The role of oxygen as a determinant of community structure is probably linked to the specific tolerance of taxa, but turbidity role could not be evaluated with certainty in the absence of information on visual predators.