algal blooms

New Hampshire Department of Environmental Services

It’s now common for the New Hampshire Department of Environmental Services to issue advisories each summer, warning swimmers of bacterial blooms along Northeastern beaches.

Cyanobacteria, which is also known as blue-green algae, has become prevalent throughout the Northeast. Now researchers from Dartmouth, University of New Hampshire, and the Cary Institute of Ecosystem Studies are collaborating with the Lake Sunapee Protective Association to find out why.

Texas A&M AgriLife

The Department of Environmental Services has been issuing more warnings than it usually does at this point in the summer for algal blooms, potentially toxic mats of cyanobacteria.

But David Neils, chief water pollution biologist at the department, says that uptick is partly caused by an increase in public awareness.

“People are becoming educated about cyanobacteria, so they’re looking for them more often, and call us more often.”

Some of those blooms that residents call DES about are small or nontoxic, but the department issues a warning just to be safe.