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Canal systems, ballast water from oceangoing ships, and seemingly little things such as fish stocking, bait bucket emptying, and trailering recreational boats all provide ways for non-native invasive species to infest North America’s aquatic environments. Using the Great Lakes—unwilling home to the sea lamprey, zebra mussel, round goby, and Eurasian ruffe—as a case study, this program takes a close look at the threats posed by aquatic nuisance species and how scientists, policymakers, and the public are working to prevent the further spread of these devastating invaders. San Francisco Bay, with its Chinese mitten crab problem, is also touched upon. (28 minutes)



 
            

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Copyright date: ©1999




     


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Biomes
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This engaging five-part series encourages students to move beyond a simplified view of the environment to a deeper level of understanding: that the global ecosystem is made up of interdependent ecological communities populated with their own particul...(more details)
 
Alternative Power Sources and Renewable Energy
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This program demonstrates how wind turbines, solar cells, hybrid automobiles, and coal gasification plants are beginning to transform the way the world is powered. The U.S. Secretary of Energy, the director of the National Wind Technology Center, the...(more details)
 
Plants Out of Place: Facing the Green Invasion
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Quickly and quietly, non-native invasive plants are making deep inroads across America, depriving entire ecosystems of the living things and natural resources they depend on to survive. This program illustrates the alarming environmental and commerci...(more details)
 
The Fragile Reef: Coral in Peril
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Called "the rainforests of the sea," the world's coral reefs are home to millions of species. But these underwater ecosystems are in grave danger. This program travels to Chumbe Island Coral Park, Zanzibar; Mafia Island Marine Park, Tanzania; and Ras...(more details)
 
Aliens from Planet Earth: The Problem of Invasive Species
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After direct habitat destruction, nonnative species introduced by humans to new areas pose the largest threat to global biodiversity. This program looks at how scientists and conservationists are coping with a number of these critical situations, suc...(more details)
 


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