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.

Genre:

Documentary

Duration:

5 min

Actor:

George Monbiot

Quality:

HD

Director:

George Monbiot

Release:

2014

Country:

United States of America , United Kingdom

IMDb:

-