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Two Species of Elodea Could be the Demise of Alaska’s Pristine Waters
Two species of elodea have been found recently in a handful of lakes and sloughs in Alaska. While native in some of the lower 48 states, these species are the first invasive aquatic weeds in Alaska.

A big concern is how the alien weed will degrade fish habitat for species such as salmon, trout and grayling. Another is how to stop the spread.

Floatplanes are a diabolically effective way for the plant to colonize new lakes and rivers. In September, Steve Swenson, with the US Forest Service conducted an aerial study landed on elodea-infested Martin Lake. Before departing the aquatic plants were carefully removed from the rudders of the float plane.

However, shortly after takeoff a piece of elodea was noticed on the rudder. Unfortunately there was nothing that could be done and shortly before landing at Hinchinbrook Island, the hitch hiker was gone.

 
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Mississippi River water hyacinth, water lettuce and parrot feather, oh my! - In recent years, three invasive species of aquatic plants have been found in Pool 5 of the Mississippi River near Buffalo City, WI. These three species – water hyacinth, water lettuce, and parrot feather– are plants often found in the water garden and aquaculture trade.


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