A biologist has begun a scientific study in three lakes in Minnesota to thin carp populations. Carp churn up sediment in the bottom of lakes in their search for food. They can dig up to a foot into the the bottom of a lake, uprooting vegetation and stirring phosphorous on the lake floor back into the water, where it fertilizes algae and weeds.
The bottom-feeding fish can make up half to two-thirds of the fish in some lakes around the country. The biologists will work to suppress young fish, remove adults and prevent adult fish from coming from other lakes and laying eggs.
November 12, 2007 2:15 PM | Category: Fish