In this episode from the BBC series, Nature Works, student host Patrice Forrester and Senior Naturalist Dave Edler explore the impact that invasive species have on the environment. The negative effects of both water milfoil and the mute swan on aquatic communities are highlighted. Major themes explored in the video include the importance of species diversity to ecosystem health and the harm exotic species can inflict. A teacher's guide for this episode can be ordered from the Nature Works website.
This video could be used in science classes to address outcomes related to biodiversity, habitats and the ecosystem concept. It could also be used effectively in geography/social studies to explore interractions between humans and their environment.
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