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Pacific Northwest

Conservation News

TWS2021: Northern spotted owls face extirpation due to barred owls

November 4, 2021

A large-scale analysis shows that barred owls are the biggest factor impacting northern spotted owls in the Pacific Northwest. Researchers believe some northern spotted owl populations are likely to become extirpated in the next couple …

Dana Kobilinsky

Removing barred owls aids northern spotted owl recovery

July 30, 2021

Throughout the Pacific Northwest, federally threatened northern spotted owls have faced growing competition from invasive barred owls, which have moved into their range. By removing the invaders, researchers found, they could stem the native owls’ …

Joshua Rapp Learn

Hoary marmots can’t cope with snow droughts

March 2, 2021

Increasing frequency and length of snow droughts in Washington state may be linked to hoary marmot population declines. “Hoary marmots are one of many subnivean species that may be stressed by snow drought or declining …

FYI News

Asian giant hornet nest reveals its secrets

November 25, 2020

When the Washington State Department of Agriculture destroyed a nest of Asian giant hornets last month, they not only gathered up the hundreds of hornets at various life stages from the first nest known in …

Conservation News

Climate change may push Northwest amphibians to the brink

August 10, 2020

By the 2080s, amphibians may be either too hot or too dehydrated to inhabit the mountains of the Pacific Northwest under projected climate change scenarios. In a study published in Global Change Biology, Gavia Lertzman-Lepofsky, …

Dana Kobilinsky

Listening in to help monitor northern spotted owls

June 1, 2020

By listening to sounds collected from recording devices in the forest, researchers can detect northern spotted owls and invasive barred owls, which can help with monitoring and conservation efforts for the former. Federally threatened northern …

Conservation News

For pikas, heat isn’t climate change’s only threat

March 5, 2019

Throughout much of their range, American pikas (Ochotona princeps) face threats from warming temperatures brought on by climate change. Small mammal that mostly dwell in alpine talus across the West, they die if they’re exposed …

David Frey

25 years after Northwest Forest Plan, birds still declining

February 22, 2019

In the 25 years since the Northwest Forest Plan was initiated, bird species still are not recovering, researchers found, despite sweeping protections the plan brought to old-growth forests in Washington, Oregon and California. While the …

Conservation News

Responding to drought, salamanders and trout seem resilient

February 15, 2019

Many well-known species like polar bears (Ursus maritimus) face immediate threats from climate change. But some wildlife, like populations of coastal cutthroat trout (Oncorhynchus clarkii) and coastal giant salamanders (Dicamptodon tenebrosus) in the Pacific Northwest, …

Conservation News

As climate warms, old-growth forests could give birds refuge

January 11, 2018

With temperatures expected to rise over the coming decades, some bird species could find it difficult to cope and suffer declines. But researchers in the Pacific Northwest found that old-growth forest may serve as a …

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