Toxic Algae

Statewide News
3:02 am
Wed August 14, 2013

Algal Blooms May Take Hit From Cooler Weather, Farm Methods

The green scum shown in this image is the worst algae bloom Lake Erie has experienced in decades. Vibrant green filaments extend out from the northern shore.
Credit NASA Earth Observatory

Algal blooms are once again causing problems for lakes and streams in Ohio this summer. But farmers are combating the situation, and so far, they’re getting some help from the weather.

When rain falls on farm fields that have been treated with fertilizers containing nitrogen and phosphorus, whatever chemicals haven't soaked deep enough into the soil, or made their way into the crops, can end up in nearby streams and lakes. That runoff is feeding nutrients to harmful algal blooms. 

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Environment
10:04 am
Fri May 25, 2012

Officials Post Signs on Toxic Algae at Ohio Lake

Officials have posted signs at a western Ohio state park lake to warn visitors about toxic blue-green algae.

The state Department of Natural Resources posted the first signs of the year Thursday at four beaches in Grand Lake St. Marys.

The Columbus Dispatch reports the signs warn people with weak immune systems to not swim or walk through the water. It also warns elderly and young people to stay away.

Blue-green algae are common in most lakes but grow thick in sun-warmed water that contains phosphorus.

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