Global Trophic Cascades News

Wolves in Yellowstone Park

National Geographic April 2005.

Killing Wolves Kills Other Animals Too

ABC News Dec. 15, 2004.

Who’s Afraid of the Big Bad Wolf? The Yellowstone Wolves Controversy

Journal of Young Investigators Nov. 2004.

Wolves linked to vegetation improvements

By Amber Travsky
March 18 ,2004, Wyoming Tribune-Eagle newspaper.

YELLOWSTONE NATIONAL PARK - Biologists had a question: what was happening to the aspen in Yellowstone National Park? Although quaking aspen is the most widely distributed tree in North America, its abundance has been shrinking over the past century. This loss has been especially apparent in our nation’s first park, where stands of the white-barked tree, with its trembling leaves and brilliant fall foliage, have decreased dramatically over the last century.

Endangered Wolves Make a Comeback

National Public Radio Feb. 20, 2004.

Wolves' Leftovers Are Yellowstone's Gain, Study Says

National Geographic News Dec. 4, 2003.

Wolves linked to tree recovery

Billings Gazette Oct 29, 2003.

Wolves enhance biodiversity in Yellowstone, report says.


Date: Wednesday, October 29, 2003

RICHARD L. HILL - The Oregonian

Summary: Change in elk behavior leads to cottonwood growth, which benefits fish and birds, OSU researchers find

The return of wolves to Yellowstone National Park appears to be boosting biological diversity around streams and helping nearly extinct stands of cottonwood trees flourish again, say two Oregon researchers.

OSU student maps L&C wildlife observations

Corvallis Gazette-Times Mar. 28, 2003

Related Documents: 

Observatory: Fates of Wolf and Aspen

New York Times, September 26, 2000

The hip bone's connected to the thigh bone, as the old children's song goes, and in ecology, things are tied together as well. The latest case in point comes from Yellowstone National Park, where researchers suggest that a sharp decline in aspen trees over the past century can be linked to the elimination of wolves.