Carp Control Improves the Health of Aquatic Ecosystems
"Carp populations in two lagoons were reduced by 41%•51% (33%•43% biomass reduction). Compared to reference lagoons, treatment lagoons exhibited a succession of ecological responses including (i) an increase in biomass of large zooplankton; (ii) an increase in taxa richness and species diversity of benthic macroinvertebrates; and (iii) increased biomass of native fish. Reduction of carp biomass by 26•34kg ha-1 resulted in an increase in native fish biomass of more than 90 kg ha-1. This response represents a significant, but transient, increase in prey availability for large fish species and fish-eating birds, and may contribute to substantial improvements in aquatic ecosystem health if responses can be sustained over longer periods."
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