Tag » Wolves

At the Apex
February 3, 2016

At the Apex

The return of wolves to Oregon sparks old conflicts and prompts new science about top predators

A cougar, silent and unseen in the thick understory, is emitting a beacon from its tracking collar.“She’s close, about a hundred meters to the north,” says Beth Orning, a Ph.D. student at Oregon State University. Orning has evidence that cougar No. C216 is raising a litter in this hidden ravine.


Epiphany on the Prairie
February 3, 2016

Epiphany on the Prairie

Like many wildlife biologists in my generation, my first wolf sighting was in the late 1990s in Yellowstone National Park. With 23 undergraduate wildlife biology majors in tow, I gazed incredulously as the 18-member Lamar Pack stalked a herd of elk; an amazing sight I never dreamed I would see in my lifetime. As a […]


Aspen Recovery in Yellowstone Spurred by Wildlife Shifts
October 6, 2014

Aspen Recovery in Yellowstone Spurred by Wildlife Shifts

Wildlife in Yellowstone National Park is undergoing dramatic shifts with consequences that are beginning to return the landscape to conditions not seen in nearly a century. In the park’s northeast section, elk have decreased in number in their historic winter range in the Lamar Valley and are now more numerous outside the park. Aspen recovery […]


Cows Show Stress
May 24, 2014

Cows Show Stress

Simulated wolf attacks produce trauma

Livestock that have encountered wolves experience stress that may affect their health and productivity.


Carnivores in Retreat
January 23, 2014

Carnivores in Retreat

Researchers call for global conservation initiative

In ecosystems around the world, the decline of large predators such as lions, wolves and cougars is changing the face of landscapes from the tropics to the Arctic. An analysis of 31 carnivore species shows how threats such as habitat loss, persecution by humans and reductions in prey combine to create global hotspots of carnivore […]


Of Predators and Herds
May 29, 2012

Of Predators and Herds

Big meat-eaters mean healthy ecosystems

The health of any ecosystem starts with razor-like teeth and an appetite for meat. The “apex” predators — big carnivores like bears and wolves at the top of the food web — keep things in balance, OSU researchers have found in study after study in the western United States. Now, the findings have been confirmed […]


Chasing the canine connection
November 16, 2011

Chasing the canine connection

When Cristina Eisenberg first heard a wolf howl, she felt comforted and curious.

[Editor’s note: Ingrid Ockert is senior pursuing a liberal arts degree with a focus in the history of science ] When Cristina Eisenberg and her family moved to Montana in 1994, they received a warm welcome from their neighbors. On the first night in their new log cabin, they were greeted by the sonorous howls […]


April 25, 2007

On Red Owl Mountain

By Cristina Eisenberg In the rural West, geography defines us. I live with my husband and teenage daughters on the shoulder of Red Owl Mountain, one of the many mountains that make up the Swan Range, which is part of the crazy quilt of ranges that forms the Rocky Mountains in northwest Montana. Our cabin […]