Wednesday, 29 October 2014

How Wolves Change Rivers

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable 'trophic cascade' occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.



YouTube link

(thanks Cora)

1 comment(s):

Anonymous said...

I suppose other parts of the forest were less fortunate :-)

Lucy