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Fall Brings Fish Relief
It’s a good thing; the hot scorching weather is over. Michigan’s fish – especially northern pike- were not fairing so well in the unusually warm waters.

The Michigan Department of Natural Resources reported numerous fish kills from around the state with waters reaching nearly 90 degrees in the lower Shiawassee River, killing off some northern pike. Fish kills were also reported in Kent County’s Dean Lake, portions of the River Raisin in Monroe County, the Kawkawlin River in Bay County and the lower Kalamazoo River.

Chinook salmon and steelhead had struggled in display ponds at the DNR’s Wolf Lake Fish Hatchery in Mattawan. The hatchery lost so many fish during the peak of the season’s heat that some of the catch-and-release programs were canceled.

The heat and drought had tag-teamed to make conditions difficult for some fish to survive. Water gets too hot for some species to handle, particularly when water level is low or water flows slowly because of low rain levels. High water temperatures also can lower oxygen levels, particularly in areas where there are heavy weeds or vegetation.

 
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Mother Nature Spreading Aquatic Invasive Species - Humans are the biggest culprit when it comes to spreading aquatic invasive species, but Mother Nature is also impacting that spread. The U.S. Army Corp of Engineers annual budget for controlling invasive aquatic plants has grown from $124 million in 2008 to $135 million in 2012.


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