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Invasive Silver Carp Negatively Affect Aquatic Food Chain
Wildlife officials are concerned that an invasive species of fish recently caught in the Pearl River below the Ross Barnett Reservoir spillway could negatively affect the aquatic food chain.

Mississippi Department of Wildlife Fisheries and Parks biologists confirmed the silver carp catch, The Clarion-Ledger reported. According to biologists, the fish, also called flying carp because of their high-flying antics when frightened, can cause greater problems.

"That's the impact people realize, but they don't realize the impact on the food chain," MDWFP Fisheries Bureau biologist Dennis Riecke said.

Riecke said the silver carp feed on phytoplankton, which are at the base of the food chain. This can produce a significant ripple factor if the silver carp become abundant, because by reducing the amount of phytoplankton, the carp reduce the food source for native baitfish and other fry species.


 
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Toxic Blue-Green Algae Plague Freshwater - Algal blooms have closed lake beaches or led to swimming advisories from Vermont's Lake Champlain to Dorena Reservoir in Oregon and from Florida’s Caloosahatchee River to Wisconsin's Lake Menomin. In addition to the health risks, the blooms take an economic toll. An estimate by Walter Dodds of Kansas State University conservatively puts the annual cost of freshwater algal blooms at more than $1 billion from lost recreation and depressed property values.


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