Otters provide a lesson about the effects of dams

otter

The giant river otter, one of South America’s largest carnivores, is endangered and has been on the decline in part because of habitat loss. But a new study finds that simply adding lots more water and shoreline won’t guarantee a huge increase in otter numbers.

Joachim S. Müller/Flickr (CC BY-NC-SA 2.0)

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