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We examined the impacts of moderate gradient silver carp biomass (five levels from 0 to 36<space> g.m -3 , i.e. about 0-792<space> kg.ha -1 ) on zooplankton communities of the eutrophic Villerest reservoir (France). During our mesocosm experiment changes in zooplankton assemblages were dependent on silver carp biomass. In the fishless and low fish biomass treatments,...
The possibility of controlling algal growth through food web manipulation led to a strong interest in documenting top-down effects of fish. Several biomanipulation experiments confirmed the potential of the classical approach based on the removal of planktivorous fishes. However, as pointed out by several authors, successes and failures of this classical approach demonstrated that there are real...
We examined the impact of five silver carp biomass levels (0, 8, 16, 20, and 32 g m−3) on plankton communities and water quality of Villerest eutrophic reservoir (France). We realized the experiments using outdoor mesocosms. The presence of silver carp led to changes in zooplankton and phytoplankton assemblages. High fish biomass strongly reduced cladoceran abundance (through predation). Silver carp...
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