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Saving the salmon

By: Brooke Fisher Photos: Mark Stone/University of Washington Top image: CEE associate professor Ed Kolodziej gestures toward Thornton Creek, an urban stream that runs from Shoreline through northeast Seattle until it reaches Lake Washington. Just as salmon swim against the current, a team of researchers faced a difficult journey on their quest to answer a decades-old problem: what causes the death of coho salmon that are exposed to stormwater runoff? After five years, the UW-led research team has successfully traced the previously unexplained coho salmon mortality to a formerly unknown chemical that is a byproduct of an industrial chemical widely used to preserve rubber tires of which three billion are produced annually around the world.

Modelling system evolution dynamics for better ecosystem management

20 Jan 2021 Imagine being able to stop species becoming unexpectedly endangered in the first place. Researchers have demonstrated that ecosystem management can be modelled to highlight potential adjustments to ongoing control strategies which might improve outcomes of system flips - that point when a species transitions from relative security to vulnerability. Image: New research can help ecosystem managers identify species vulnerabilities and prevent populations from becoming at risk, like the endangered Mexican gray wolf  Credit: U.S. Fish and Wildlife Service More than 3,000 animal species in the world today are considered endangered, with hundreds more categorised as vulnerable. Currently, ecologists don t have reliable tools to predict when a species may become at risk.

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