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Project Noah Nature School
Didymosphenia geminata
A species of diatom that grows in warm and shallow water. If it overgrows, it can form large mats on the bottom of lakes, rivers and streams. It is not considered a significant human health risk, but it can affect stream habitats and sources of food for fish and make recreational activities unpleasant. It is considered a nuisance organism or invasive species. The microscopic alga can be spread in a single drop of water.
warm shallow water. Flow of this particular stream is determined by snow-melt run-off.
Phelps Lake Creek
Spotted on Sep 10, 2011
Submitted on Nov 11, 2011
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