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Alien Ocean
Автор: ResearchChannel
Загружено: 2008-02-09
Просмотров: 15367
Описание: In this video produced by the National Sea Grant College Program, discover the aliens in our waters and the damaging effects that they bring. Alien species of shellfish, crabs and grasses are crowding out native species in many U.S. waterways. How did these species get to Northern America? What effects does their presence have on native species? How can this influx be stopped before it changes these ecosystems forever? Scientists in the emerging field of invasion ecology talk about how to address this developing issue.
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