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Issaquah Creek. Photo courtesy of Nicholas Georgiadis.

Are summer low flows increasing in Puget Sound streams?

Update: A pdf of slides from the presentation is now available. Adequate stream flows are critical to Puget Sound’s endangered salmon and are one of the state’s ‘Vital Sign’ indicators of ecosystem health. Earlier data suggests that summer stream flows have been on the decline, but new analysis shows that gauging these flows may be …

Salmon experts predict more wild coho but fewer Chinook in Puget Sound this year

Greater numbers of wild coho salmon are expected to return to Puget Sound later this year, according to forecasts released last week, but threatened Puget Sound Chinook stocks are likely to see another decline. The 2021 salmon forecasts were announced Friday during an online video conference with sport and commercial fishers and other interested people …

New sewage-treatment permit would be a step to curbing nitrogen in Puget Sound

In an effort to stem the flow of excess nitrogen into Puget Sound, Washington Department of Ecology has proposed a new type of permit for some 60 sewage-treatment plants operating throughout the region. The flexible permit, called the Puget Sound Nutrient General Permit, aims to hold nitrogen releases close to or below their current levels …

Sunflower sea stars certified as ‘critically endangered’ by international organization

The magnificent sunflower sea stars, pushed to the edge of extinction by sea star wasting disease, have been declared a “critically endangered species” by the International Union for Conservation of Nature. The listing, announced yesterday, is supported by new studies that show a 90-percent decline in the overall population of sunflower stars. The species (Pycnopodia …

Discovery of toxic chemical in tires spurs scientific and regulatory interest

The discovery of a mysterious chemical that kills coho salmon in urban streams is expected to spawn new research throughout the world while possibly inspiring new demands for protective regulations. The deadly chemical, associated with automobile tires, was identified by researchers at the University of Washington’s Center for Urban Waters, which is affiliated with the …

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 …

Controversy flares up over proposed policy revisions for state salmon hatcheries

UPDATE: NOV. 10, 2020 Washington Fish and Wildlife Commission is seeking comments on a slightly revised draft of a new Hatchery and Fishery Reform policy. For details, please read the news release issued yesterday. —- A state policy revision that could boost salmon production at fish hatcheries in Washington state has raised red flags among …

Minor bridge modifications could help young steelhead escape from Hood Canal

Help could be on the way for migrating steelhead and salmon in Hood Canal, where many young fish are killed each year by seals and other predators that lie in wait at the Hood Canal floating bridge. As many as 50 percent of the steelhead migrants perish as they arrive at the bridge, where predators …

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 …

Toxics in Fish report cover.

New guidance for cleanup of toxics in Puget Sound

An EPA-funded team of scientists and other experts has completed draft recommendations for the future cleanup of toxic chemicals in Puget Sound. The group’s Toxics in Fish Implementation Strategy addresses pollutants such as PCBs and a slew of emerging contaminants that can affect species throughout the waterway. The strategy will be available for public review …

Orca census: One death in January, but no births were reported until September

UPDATE, Oct. 6 The newest calf among the Southern Resident killer whales was officially designated J58 after being seen alive and healthy on Sunday. The calf is the offspring of J49, a 15-year-old female named Eclipse who has one surviving calf, J51 or Nova. Ken Balcomb of the Center for Whale Research had been withholding …