Changes in the crustacean communities of Lakes Michigan, Huron, and Erie following the invasion of the predatory cladoceran Bythotrephes longimanus.

摘要: The crustacean zooplankton communities in Lakes Michigan and Huron the central eastern basins of Lake Erie have shown substantial, persistent changes since invasion predatory cladoceran Bythotrephes mid-1980s. A number species declined dramatically invasion, including Eubosmina coregoni, Holopedium gibberum, Daphnia retrocurva, pulicaria, Leptodora kindti, overall richness has decreased as a result. Copepods been relatively unaffected, with notable exception Meso cyclops edax, which virtually disappeared from lakes. These shifts for most part consistent equally pronounced across all three Responses to do not appear be solely consequence size, it is likely that other factors, e.g., morphology, vertical distribution, or escape responses, are important determinants vulnerability predation. Our results indicate tha...