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Tanya Roberts

PSI welcomes Tanya Roberts as Research Scientist

Tanya Roberts is PSI’s newest research scientist, and comes to us from the Washington State Department of Ecology’s Environmental Assessment Program. While with Ecology (2005–2012; 2016–2017), Tanya worked with teams monitoring natural resources throughout the state, assessing groundwater, forest streams, and toxics, as well as serving as a data coordinator for a variety of Ecology …

A dying female coho salmon in the Lower Duwamish spotted by Puget Soundkeeper volunteers in October 2017. Photo: Kathy Peter

What makes stormwater toxic?

Stormwater may be Puget Sound’s most well-known pollutant, and at the same time its least known. While the state has called stormwater Puget Sound’s largest source of toxic contaminants, scientists are still having a tough time answering two basic questions about it: What is stormwater, exactly, and what does it do? Our magazine Salish Sea …

Puget Sound’s growing nutrient problem

First there was “The Blob” that fed last year’s massive algae bloom in the Pacific Ocean. Now there is another monster getting our attention. You might call it “The slime that ate Lake Erie.” The incredible images of Lake Erie’s expanding blanket of green show the familiar effect of nutrient pollution. Nutrients such as phosphorous …

PSI will host a wide variety of sessions and panels at the 2018 Salish Sea Ecosystem Conference

The announcements are in and Puget Sound Institute researchers will be chairing or co-chairing at least five different special sessions at next year’s Salish Sea Ecosystem Conference in Seattle. The sessions will include subjects as varied as Contaminants of Emerging Concern, microplastics, Pacific herring, ecosystem modeling and the potential influence of the region’s technology industry …

New project searches for contaminants of emerging concern

PSI research scientist Andy James has been funded by the Environmental Protection Agency’s National Estuary Program to identify contaminants of emerging concern (CECs) in the waters of Puget Sound. There are literally thousands of man-made chemicals known as CECs circulating in local waters, but very little is known about their impacts on wildlife. They are …

Increasing adult mortality in Puget Sound herring may contribute to population declines

PSI’s lead ecosystem ecologist Tessa Francis is co-author of a 2017 paper linking increasing adult mortality of Puget Sound herring with regional population declines in the species. The authors report that natural mortality among herring four years and older has doubled in Puget Sound since 1973, suggesting a possible connection to declines at spawning sites …

Herring talk May 15th at UWT

PSI’s Tessa Francis will be presenting a lecture on Puget Sound’s Pacific herring as part of the University of Washington Tacoma Environmental Seminar series on May 15th. The seminar is open to the public and will be held from 12:30 P.M. to 1:30 P.M. on the UWT campus in the Science Building in room SCI309. The talk will …