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There is increasing evidence that rare species play an important role in trophic interactions, but the function of rare species with low biomass in these processes remains unclear. Phytoplankton is placed at the base of lentic and marine food webs and is characterised by a few dominant species and many rare species. While the dominant species contribute most to the primary production, they are...
1. An in situ enclosure experiment was conducted in a deep reservoir of southern China to examine (i) the effects of a low biomass (4 g wet weight m−3) of silver carp (Hypophthalmichthys molitrix) and nutrients on the plankton community and (ii) the response of Daphnia to eutrophication.
2. In the absence of fish, Daphnia galeata dominated the zooplankton community, whereas calanoids were dominant...
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