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Mother Nature Spreading Aquatic Invasive Species
Humans are the biggest culprit when it comes to spreading aquatic invasive species, but Mother Nature is also impacting that spread. The U.S. Army Corp of Engineers annual budget for controlling invasive aquatic plants has grown from $124 million in 2008 to $135 million in 2012.

In Vermont, the floodwaters and repair work from Tropical Storm Irene broke off portions of stems and woody rhizomes of the aggressive Japanese knotweed. Japanese knotweed spreads quickly on riverbanks, floodplains and roadsides, choking out native plants, degrading habitats of fish, birds and insects, and weakening stream banks.

Camp Brook, a tributary of the White River, has been stripped of trees, rock, and other native plants due to the floodwaters. Efforts are under way to restore the bare banks with native trees and shrubs that will hopefully shade out the knotweed which is beginning to grow in the absence of the natives.

Asian carp have been moved from the Missouri and Mississippi rivers into isolated lakes and oxbows due to the flooding last year. Some carp were even able to pass over dams during the floods

 
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Havoc-Wreaking Plant That Nearly Brought Hippos To The U.S. - It’s been doused with oil, torched by flamethrowers, mowed down, laser beamed and set upon by Argentine weevils — but you shouldn’t feel too sorry for the violet-colored, violence-disposed water hyacinth.


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