Madison
62° F
Clear
Clear
Advertisement

Biologists expect another big fish kill

Published On: Mar 13 2013 11:25:59 AM CDT
MOSINEE, Wis. -

State biologists expect a spring fish kill on the Big Eau Pleine reservoir in central Wisconsin will be even bigger than 2009 when tens of thousands of fish were wiped out of the waterway.

Wisconsin Department of Natural Resources experts suspect the fish kill has already started, judging from reports by area ice anglers.

The DNR said oxygen levels in the Eau Pleine are so low fish can't breathe. Nutrient-rich sediment and organic material decays and sucks the oxygen out of the water. The ice limits the air and light from replenishing it.

The Marshfield News-Herald reported that after the fish kill four years ago, state and local officials repaired and improved an aerator to boost oxygen levels in the reservoir.

Advertisement
  • jack-o-lantern Halloween pumpkin

    Juliet James/SXC

    Halloween

    Games, recipes, trick-or-treating, scary movies and everything else you need to make your Halloween extra spooky.

  • Politician, politics, debate, election

    iStock / bns124

    Election Coverage

    Get up-to-date on political stories, Reality Check the latest political ads, learn about the candidates and find election results in our special section.

  • Ebola virus pink

    CDC

    Ebola special coverage

    Get the latest news on the Ebola outbreak and resources to help you learn more about the deadly virus.

Advertisement