New York State DEC factsheet NYS DEC Didymo in New York Didymo Alert - NYS Dept. of Environmental Conservation Didymo Alert - NYS Dept. of Environmental Conservation http://www.dec.ny.gov/animals/54244.html NYS DEC NYS DEC NYS DEC NYS DEC New York Department of Environmental Conservation NYS DEC NYS DEC NYS DEC Didymosphenia geminata