OREGON STATE UNIVERSITY

Global Trophic Cascades News

Studies confirm effect of wolves, elk on tree recovery in Yellowstone National Park

OSU Press Release, May 5, 2016: An analysis of 24 studies over a 15-year period has confirmed that wolves and their influence on elk represent a major reason for the recovery of trees that had previously been declining for decades in Yellowstone National Park.

Related Documents: 

Sabercats and Other Carnivores Kept the Ice Age World Green

National Geographic, Dec. 2, 2015: The huge herbivores of the Ice Age were ecosystem engineers. Wherever they went, mastodons, sloths, bison, and their ilk changed the landscape by eating, defecating, trampling, and otherwise going about their plant-mashing business. But they were not isolated agents. Following out the engineer analogy, the megaherbivores of times past had managers. These were the sabercats, hyenas, wolves, and other predators past.

Related Documents: 

Wolves Are Being 'Accidentally' Killed Off In Alarming Numbers

The Dodo, Nov. 10, 2015

Related Documents: 

Ancient super-predators could take down a mammoth

CBS News, Oct. 27, 2015

Related Documents: 

Prehistoric predators kept large animals in check, shaped ecosystems

OSU Press Release, Oct. 26, 2015: “Large predators can have a major role in limiting their prey and in determining the structure and function of ecosystems,” said Ripple. “But scientists have thought that the largest herbivores, such as elephants, were immune from predation. We now know that’s not the case, and based on these data from the Pleistocene (the epoch which lasted from about 2.5 million to 11,700 years ago), we now think that large carnivores did limit the large herbivores at that time.”

Related Documents: 

Why lizards need elephants to survive

Conservation Magazine, May 22, 2015

Related Documents: 

Save the Vegetarians, Save the World

On Earth, May 11, 2015

Related Documents: 

60 Percent Of Large Herbivores May Go Extinct Thanks To Humans

The Huffington Post, May 4, 2015: "I was surprised by the fact that so many of these large animals were consider threatened," Bill Ripple, a professor at Oregon State's College of Forestry, told The Huffington Post. "Most of the very large herbivores have already been wiped out in developed countries."

Related Documents: 

Pages