Environment

A pair of studies published April 14 in the journal Science paint a new picture about apes, ancient Africa and the origins of humans. Many scientists had once hypothesized that the first apes to evolve in Africa more than 20 million years ago ate primarily fruit and lived within the thick, closed canopy of a nearly continent-wide forest ecosystem. Instead, the new research indicates that early apes ate a leafy diet in a more arid ecosystem of varyingly open woodlands with abundant grasses.

The new UW Biology Greenhouse is a place for research, for classes, and for anyone who enjoys spending time with plants.

In the Pacific Northwest and British Columbia, southern resident orcas have experienced no net population growth since the 1970s, with just 73 left at the most recent count. But northern resident orcas, which have a similar diet, territory and social structure, have grown steadily, now numbering more than 300. A new study led by scientists at the University of Washington and NOAA Fisheries may help explain why: The two populations differ in how they hunt for salmon, their primary and preferred food source, a key difference that conservationists will have to take into account when designing interventions to help southern residents.

Research led by scientists at the University of Washington's Center for Ecosystem Sentinels reveals that a warming world is increasing human-wildlife conflicts globally. They show that climate shifts can drive conflicts by altering animal habitats, the timing of events, wildlife behaviors and resource availability. It also showed that people are changing their behaviors and locations in response to climate change in ways that increase conflicts.

Attacks on humans by carnivorous animals have increased steadily since 1950, as growing human populations in new areas make such incidents more common, according to a study published last week. According to other experts, climate change may also be contributing to increased human-wildlife conflict. Briana Abrahms, assistant professor of biology at the UW, is quoted.

Three University of Washington experts have provided quotes in response to the magnitude 7.8 earthquake that struck Turkey and Syria on Monday morning.

Philosopher Arthur Obst, a UW doctoral student, thinks that wild places can thrive — if we adjust our definition of wilderness and embrace the idea of letting go. 

Briana Abrahms, Assistant Professor and Boersma Endowed Chair in Natural History and Conservation, UW Department of Biology, uses data to help people and animals coexist with climate change in Botswana.

Climate change will reshape ecosystems through two types of events: short-term, extreme events — or “pulses” — and long-term changes, or “presses.” Understanding the effects of presses and pulses is essential as conservationists and policymakers try to preserve ecosystems and safeguard biodiversity. Researchers at the University of Washington have discovered how different presses and pulses impacted Magellanic penguins — a migratory marine predator — over nearly four decades and found that, though individual presses and pulses impacted penguins in a variety of ways, both were equally important for the future survival of the penguin population. They also found that these types of climate changes, taken together, are leading to an overall population decline at their historically largest breeding site.

In the summer of 2018, 3,300 acres of the Olympic National Forest were set ablaze by poachers aiming to cut down maple trees. UW professors Daniel Hoffman and Lynn Thomas created a documentary, titled “The Maple Cutter,” about the incident — read writer Curran Nielsen’s interview with the filmmakers.

Nina Chanel Abney explores inequity and identity through vibrant prints at the Henry Art Gallery.

Wolf management in Washington has been controversial. Rob Anderson, who obtained his Ph.D. at the University of Washington, explains the dynamic of managing a species through fear.

Half the world could soon face dangerous heat. We measured the daily toll it is already taking. While the future is uncertain, climate scientists widely agree that even in the best-case scenarios — in which humans take dramatic action to lower carbon emissions — days with dangerous levels of heat and humidity are very likely to become more common in much of the world. The forecasts of heat stress shown in this article include Adrian E. Raftery and David S. Battisti at the University of Washington. 

A study led by Thure Cerling, a professor at the University of Utah, and co-authored by Sam Wasser, a University of Washington professor of biology, used carbon isotope science to show that tusks from a guarded government stockpile in Burundi have somehow made their way into the hands of illegal ivory traders.

A new study by researchers at the University of Washington shows that losing a particular group of endangered animals — those that eat fruit and help disperse the seeds of trees and other plants — could severely disrupt seed-dispersal networks in the Atlantic Forest, a shrinking stretch of tropical forest and critical biodiversity hotspot on the coast of Brazil.