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Antarctica Braces for Influx of Invasive Species
Antarctica and the Southern Ocean may seem very far away from civilization, but they are at great risk of losing their unique qualities due to human activities. Warmer temperatures and human visitation are increasing the likelihood that invasive species can take up residence in the Antarctic, and potentially cause major changes.

Cold water has kept out most crustaceans like crabs and lobsters which cannot survive at temperatures less than 34o, so the discovery of a species of king crab in shallow areas close to the Antarctic Peninsula was unwelcome news. On land, a small insect called the midge could very well become disruptive to terrestrial species. There are few terrestrial species in the region making them quite vulnerable to disturbances in the ecosystem such as the introduction of midge and other invasive species.

 
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Herbicide Resistant Milfoil in Silver Lake - Silver Lake was so choked with aquatic weeds last summer that it was difficult to enjoy boating, swimming and fishing. The thick canopy of vegetation floating on the surface water turns out to be a mix of 20 different plant species, but not surprisingly, Eurasian watermilfoil, an aquatic invasive species, accounts for 60 percent of the growth.


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