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Common Carp Damage Minnesota Waters
Researchers analyzed data from over 2,000 Minnesota lakes, covering three major ecoregions of Great Plains, Eastern Temperate Forests, and Northern Forests. They also conducted whole lake experiments in six lakes in which they established what the current carp populations were, surveyed plant cover and identified species richness both before and after removing carp.

Researchers found that when common carp were prolific, plant cover was reduced to less than 10 percent and species biodiversity was halved. By analyzing the impacts of other human-caused stressors, the researchers revealed that carp had a greater impact on aquatic plant biodiversity than human watershed development did (urban and agriculture).

The study also showed that removing common carp increased plant cover, species richness and water clarity.



 
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Hand Harvesting of Eurasian Watermilfoil on Norwood Lake - Eurasian watermilfoil is destructive to native plants by taking up space and blocking sunlight from native species. It can also disrupt the behavior of native aquatic animal species with its density. Its density can also cause problems for boats and things such as municipal water intakes.


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