How Wolves Change Rivers

A friend shared this video with us. It tells an amazing story about how when a few wolves were reintroduced into Yellowstone National Park in 1995, helped to change not just the eco system but also the physical geography. It presents a moment of hope in the amazing power of nature. Plus I was particularly interested in what my forefathers did!

IMG_2481This is an example of trophic cascade – an ecological process that starts at the top of the food chain and tumbles all the way to the bottom.

It began by the wolves killing some over-populated deer in the park which eventually changed the behaviour of the river in Yellowstone National Park.

They changed not just the eco system but also the physical geography!  Amazing, huh?IMG_2482

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.