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December 27, 2024

Adult fall Chinook salmon. Photo: Pacific Northwest National Laboratory">

The importance of estuaries for adult salmon in Puget Sound

Next time you see a salmon moving upstream to spawn, consider the importance of estuaries. Estuaries, places where rivers and creeks mix with the waters of Puget Sound, help salmon adjust the ions (salts) in their bodies so they can safely make the transition from marine to fresh water. A new report by University of Washington scientist […]

September 29, 2023

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2022 Salish Sea toxics monitoring synthesis: A selection of research

A new report from the Puget Sound Ecosystem Monitoring Program takes a comprehensive look at some of the greatest dangers posed by toxic chemicals in the Salish Sea. The report was produced with support from the UW Puget Sound Institute, and brings together recent findings on PCBs, CECs, PFAS, 6PPD-Q, and other toxics of concern. It […]

June 26, 2022

PSI monthly roundup: June 2022

VIEW THE FULLY FORMATTED NEWSLETTER in your browser Boundary spanning in Puget Sound Ecosystem-based management is often a large-scale collaborative effort involving many distinct groups. Boundary spanning organizations such as the Puget Sound Institute can help to support communication and policy development across institutions. In a new paper in the journal Environmental Science & Policy, we look […]


December 3, 2020

Stormwater picks up contaminants from vehicles. Photo: Daniel Parks (CC BY-NC 2.0) https://www.flickr.com/photos/parksdh/7014755513">

Could tire discovery go beyond impacts on coho?

Scientists have suspected for several years that chemicals from tire wear particles are to blame for the deaths of thousands of coho salmon that have returned to spawn in Puget Sound’s urban streams. Sometimes referred to as “pre-spawn mortality” or “urban runoff mortality syndrome,” these deaths typically occur in streams near roads, and scientists have […]

October 1, 2020

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Do we know enough to do anything about all the seals and sea lions in Puget Sound?

Scientists have known for years that Chinook salmon are important to southern resident orcas, but Chinook are not the only fish the whales eat. At the moment, chum salmon are returning to Puget Sound, and recent orca sightings suggest that the whales may now be feeding on chum. Harbor seals also eat Chinook salmon, but […]

May 20, 2020

The Cougar Creek Fire in Klickitat County, Washington, 2015. Photo: USFS">

Fire danger returning to Western Washington

The National Weather Service is predicting a warmer and drier than average summer this year in Washington, prompting officials to brace for an early start to the fire season. Historically, the eastern part of the state has seen the largest impacts from fires, but climate change is now increasing the risk west of the Cascades. […]

April 28, 2020

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Voices Unbound podcast series

What do people really mean when they talk about the environment? A new podcast from the University of Washington Tacoma asks regular citizens a simple, but charged question: “What are the environmental challenges that are most important to you?” The answers to that question drive this engaging podcast in sometimes unexpected directions, from the environmental […]