Bighead Carp Hypophthalmichthys nobilis and Silver Carp H. molitrix (collectively bigheaded carp) are established in Barkley Reservoir of the Cumberland River and Kentucky Reservoir of the Tennessee River. I developed an Ecopath with Ecosim (EwE) model to evaluate the ecological effects of bigheaded carp on native fish community biomass, and estimate the harvest rate required for bigheaded carp control under differing levels of immigration. The model predicted a 15-20% decrease in native fish biomass from 1978 baseline biomass levels without bigheaded carp control efforts. High harvest levels were able to suppress bigheaded carp biomass. Barriers limiting immigration accelerated bigheaded carps’ biomass decline and native fishes biomass recovery when commercial harvest is maintained.
|Advisor:||Rogers, Mark W|
|Commitee:||Murdock, Justin, Wheeler, Christopher|
|School:||Tennessee Technological University|
|School Location:||United States -- Tennessee|
|Source:||MAI 81/11(E), Masters Abstracts International|
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