gray wolf river

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This video tells an awesome story of how introducing wolves to Yellowstone helped restore the ecosystem.

“When we try to pick out anything by itself, we find it hitched to everything else in the Universe.” - John Muir

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.

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HOW WOLVES CHANGE RIVERS 

An excellent four minute long video about the amazing changes in Yellowstone directly caused by the return of gray wolves. 

Gray Wolfs on the Yellowstone River March 24 2015 15:06
As winter is ending Male Grizzly bears wake up early and search for winter killed Bison that have fallen or drowned in the river. The Bears drag them to edge and eat their fill and guard the precious meal. But when they blink or even when they are busy chasing another bear away. Wolfs come in and grab a quick meal. Gray wolfs are most comfortable and active in the hardest part of the Yellowstone winter.

Photo by @michaelnicknichols // I spent 14 months photographing in Yellowstone for the coming May 2016 issues of National Geographic Magazine.
We had a team to cover the many sides and issues in the Greater Yellowstone Ecosystem and @ronan_donovan was our wolf photographer. Ronan was sitting next to me and made a much better image that appears as a double page in the magazine. @drewtrush our mountain lion photographer was guarding us in case a grizzly came from a direction we could not see. Guarding us with Bear spray and his eyes .. the best deterrent after the essential number of 3 humans.

Will post images @michaelnicknichols and @natgeo #yellowstone #yellowstonenationalpark #nationalgeographic #nationalpark by natgeo