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Oregon Invasive Species Council

February 2009- Rock Snot
Invasive Species of the Month
February 2009 Invasive Species of the month
Rock Snot (Didymosphenia geminata)
 
click calendar below for larger image
 
 
Rock snot
 
 OISC february 2009 calendar
Photo courtesy of Toby Talbot, Associated Press 
 

What is Rock Snot?
rock snot
Rock snot is native to eastern North America and Eurasia and was introduced to New Zealand. It is a species of diatom that can form large mats. It is not considered a significant human risk, but it can affect stream habitats and sources of food for fish and make recreational activities unpleasant. The microscopic algae can be spread in a single drop of water.
February 2009 calendar events
February 2009 Oregon Invasive Species Council calendar events
 
 
february calendar
 

Where?
Rock snot can be found in warm water and on the bottom of lakes, rivers and streams.
Lookalike?
It's known as rock snot for a reason.
What can you do?
Prevent the spread. Before leaving a water body, remove obvious clumps of algae. If you find algae later, don't wash it down the drain. Dispose of algae in a trash container. Clean and scrub all items in hot water or bleach/antiseptic solution.
Pest Risk Assessment
Rock Snot Pest Risk Assessment