Invasive algae put (New England) region on alert. 'Rock snot' finds new environment

[Ian David]

By Lisa Rathke, Associated Press | August 6, 2007

STOCKBRIDGE, Vt. -- With steep banks, deep pools, and pebbly shores, this scenic stretch of the White River has long been a haven for fishing, swimming, and floating on inner tubes. But biologists fear that an invasive algae known as "rock snot" could drive away swimmers and fish.

"I think if it takes hold, if it forms these massive blooms, it will really change the face of White River as we know it," said Mary Russ, executive director of the White River Partnership.

The aquatic algae didymo -- Didymosphenia geminata -- has infested rivers in New Zealand with gray floating growth but had never been seen in the Northeast before this summer, when fishermen spotted it in the upper Connecticut and White rivers.

Northeast states are on alert, warning anglers and boaters to scour their boats and clean their gear to prevent the algae's spread.

"Please don't take chances, disinfect your fishing gear," said Scott Decker, program supervisor with the New Hampshire Fish and Game Department.


A rock covered with the aquatic algae didymo, also known as "rock snot." (TOBY TALBOT/ASSOCIATED PRESS)

More:
http://www.boston.com/news/local/vermont/articles/2007/08/06/invasive_algae_put_region_on_alert/?rss_id=Boston+Globe+--+City%2FRegion+News