The sometimes cannibalistic European green crab is spreading throughout Atlantic Canada, causing headaches for the region's lobster fishermen.

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What do gray wolves, elephants, and parrotfish have in common? They're all keystone species, which means they have an especially large impact on their habitat. (5:07 min.)

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I help coordinate project proposals that address conservation threats to wildlife in Atlantic Canada..

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Some species have a bigger impact on their ecosystem than others. These keystone species include predators, prey, plants, and ecosystem engineers.

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CurioCity resources which align with the Northwest Territories Biology 20 Unit B: Ecosystems and Population Change

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The Japanese knotweed is just the latest species invading Canada's native habitats in a problem that has grown over recent years. This news segment reports on the efforts of Invasive Species Council of Metro Vancouver to stop invasive plants and animals.

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The reintroduction of wolves at Yellowstone National park created a trophic cascade which had a positive effect on the abiotic and biotic aspects of the park ecosystem and actually transformed the physical geography of the park.

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They are known for building dams, and featured on out nickel, but there is a lot more to beavers then just that. Learn more about Canada’s national animal and their impact on the ecosystem.

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