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mississippi river

29 Jan 2021

Mississippi River Asian Carp Acoustic Deterrent System Test

by staff | posted in: science - research | 0

In January 2021, scientists, engineers, and contractors will begin installing a temporary, experimental underwater Acoustic Deterrent System, or uADS, at Mississippi River Lock and Dam 19 between Keokuk, Iowa, and Hamilton, Illinois. The construction is part of a study to … Continued

asian carp, carp, invasive species, mississippi river, research, science, usace, usgs
7 Aug 2016

Mississippi River Pool 7-8 Fish Kills

by staff | posted in: regional | 0

Biologists with the departments of natural resources in Minnesota and Wisconsin have determined that several fish kills reported in and around the Mississippi River near La Crosse are due to hypoxia, which occurs when there are unusually low levels of … Continued

fish kills, hypoxia, Minnesota, mississippi river, rivers, wisconsin
7 Jan 2015

Iowa Paddlefish

by staff | posted in: regional | 0

A 107-pound, 69.5-inch paddlefish caught in 1981 by Robert Pranschke of Onawa holds the record as Iowa’s largest official state record fish. An even larger paddlefish speared in the Iowa Great Lakes area in the early 1900’s weighed nearly 200 … Continued

great lakes, iowa, mississippi river, missouri river, paddlefish
6 Jun 2014

Upper Mississippi River Carp Egg Testing

by staff | posted in: science - research | 0

U.S. Geological Survey (USGS) scientists have extracted DNA from fish eggs found in northern sections of the Upper Mississippi River and have determined that the eggs and larvae are not from Asian carp. Genetic analysis instead shows that the fish … Continued

asian carp, carp, grass carp, invasive species, mississippi river, research, rivers, science, usgs
19 Mar 2014

Asian Carp Eggs Found in Upper Mississippi River

by staff | posted in: regional | 0

Asian carp eggs, including late-stage embryos nearly ready to hatch from the egg, were recently identified in samples collected by U.S. Geological Survey scientists in 2013 from the Upper Mississippi River as far north as Lynxville, Wisc. The eggs and … Continued

asian carp, bighead carp, great lakes, invasive species, mississippi river, silver carp, usgs

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