A new UW study shows a nine-fold increase in coyote density in Seattle compared to natural areas of Washington state. Coyotes in urban environments have fewer predators and more prey, which may help explain the national trend.
Wolves returned to Washington state in 2008. A new study shows that, despite their rising numbers, wolves are not having much of an impact on white-tailed deer, one of their primary prey. In a paper published June 18 in Ecological Applications, scientists from the University of Washington and the Washington Department of Fish & Wildlife report that the biggest factor shaping white-tailed deer populations in northeast Washington is the quality of habitat available, which is largely determined by human activity. Cougars were second in their impact. Wolves were a distant third.
Two UW professors teamed up to study how climate change will affect predator-prey interactions in snowy landscapes. Together with a group of researchers, the two measured snow properties that led to a “danger zone,” where prey would sink but predators would not.
New research shows that in Washington state, the presence of two apex predators — wolves and cougars — does indeed help keep populations of two smaller predators in check. But by and large the apex predators were not killing and eating the smaller predators, known as mesopredators. Instead, they drove the two mesopredator species — bobcats and coyotes — into areas with higher levels of human activity. And people were finishing the job.
University of Washington researchers found that adopting permanent daylight saving time in the United States would reduce deer-vehicle collisions and likely prevent an estimated 36,550 deer deaths, 33 human deaths, 2,054 human injuries and $1.19 billion in costs each year. Deer-vehicle collisions would decrease under permanent DST because skies would be brighter later into the evening.
A new University of Washington-led study has found that even in remote, rarely visited national parks, the presence of even just a few humans impacts the activity of wildlife that live there. Nearly any level of human activity in a protected area like a national park can alter the behavior of animals there.
Scientists from around the world, including the University of Washington, have established the Arctic Animal Movement Archive, an online repository for data documenting the movements of animals in the Arctic and Subarctic. With this archive, scientists can share their knowledge and collaborate to ask questions about how animals are responding to a changing climate.
When the UW announced it was moving its spring quarter 2020 classes entirely online to combat the novel coronavirus, instructors across campus faced a new, uncharted challenge.
University of Washington researchers have discovered that large predators play a key yet unexpected role in keeping smaller predators and deer in check. Their “fatal attraction” theory finds that smaller predators are drawn to the kill sites of large predators by the promise of leftover scraps, but the scavengers may be killed themselves if their larger kin return for seconds.
Six University of Washington professors are to receive a Presidential Early Career Award for Scientists and Engineers, according to an announcement July 2 from the White House. The award, also known as the PECASE, is the highest honor given by the U.S. government to early-career scientists and engineers “who show exceptional promise for leadership in science and technology.”
Meticulously tracking of 423 species before, during and after the worst droughts to hit California in more than a thousand years shows surprising patterns. Key prey species plummeted in the third year of the drought, and carnivores were hardest hit in later years.
Visitors to national parks are half as likely to see wolves in their natural habitat when wolf hunting is permitted just outside park boundaries, according to a new study.