A grand plan to reduce human sources of nitrogen in Puget Sound started coming into focus in 2019 when the issue of regulations reached a decisive point. After years of study and advances in computer modeling, experts at the Washington Department of Ecology were beginning to see what it would take to reduce human sources […]
June 12, 2025
Low oxygen challenge, part 3: Computer models spell out the extent of the water-quality problem
After more than eight years of study amid ongoing discussions, the Washington Department of Ecology has made public a far-reaching plan for reducing human sources of nitrogen that contribute to the destructive low-oxygen conditions in Puget Sound. The plan, called the Puget Sound Nutrient Reduction Plan, calls for reductions in nitrogen from sewage-treatment plants, agricultural […]
June 12, 2025
Low oxygen challenge, part 2: Water-cleanup plans and the search for ‘reasonable’ actions
On a clear autumn day, the blue waters of Budd Inlet reflect the distant snow-capped Olympic Mountains. From the water’s surface, nobody can tell if low-oxygen conditions might be lurking below, as they often do, creating a stressful or even deadly environment for sea life. The fact that beauty can disguise the harsh reality of […]
June 12, 2025
Low oxygen challenge, part 1: The debate over oxygen in Puget Sound
In Puget Sound, low oxygen levels are a proven threat to marine creatures, from fish to shellfish and even tiny organisms. This threat has long been recognized by scientists — particularly within slow-flushing bays and inlets where low levels of dissolved oxygen can impair sea life and occasionally create deadly conditions in late summer and […]
June 9, 2025
Follow the herring: Why sea lions have been calling Shilshole Marina home
For the past three springs, Shilshole Bay Marina has been contending with droves of California visitors occupying their guest boater moorages––California sea lions that is. To Shelby Allman, Port of Seattle Harbor Operations Supervisor, it seemed like the furry visitors arrived almost overnight. By mid-May nearly 120 animals had hauled themselves onto five “finger” docks […]
June 6, 2025
July 8 roundtable will dig into assessing effects of multiple climate change stressors on marine invertebrates and developing mitigation techniques to minimize impacts
Co-hosted with Fisheries and Oceans Canada (DFO) Climate change is leading to increasingly warmer oceans that are also more acidic, less oxygenated, and with lower salinity (among other changes). The resultant impacts on marine organisms will depend on the rate, level, and variability of change of individual stressors and how effectively the animals can deal […]
May 8, 2025
June 3 roundtable will explore innovation in ecotoxicology: integrating next-generation chemical and biological tools
Co-hosted with the University of Saskatchewan The Salish Sea Science Roundtable online speaker series continues on Tuesday, June 3 from 12:30 – 1:30 pm. Dr. Markus Brinkmann will explore advanced methods in ecotoxicology, specifically high-resolution mass spectrometry (HRMS) and integrated chemical and biological analyses. He will demonstrate how HRMS technology helps scientists characterize the diversity of […]
April 29, 2025
New law requires sewage spills to be revealed to the public through a new statewide website
Mindy Roberts of Washington Conservation Action said someone asked her a few years ago about the frequent sewage spills occurring in Tacoma’s Thea Foss Waterway. “My answer was, ‘What sewage spills?’” Mindy recalled, quickly realizing that if she didn’t know about sewage spills in her own city, then hardly anybody else was likely to know […]
April 17, 2025
Eating fish: Court order may end the battle over toxic standards in Washington state waters
It appears that a decade-long battle to establish allowable levels of toxic chemicals in Washington state’s waterways may finally be over. Strict toxic standards, first imposed on the state in 2016 by the Environmental Protection Agency, seem to have prevailed. Primary chemicals of concern in the long battle over human health criteria include polychlorinated biphenyls, […]
April 14, 2025
The winner of Grand Uncertainties Madness!
After five rounds of voting, the winner of the Grand Uncertainties Madness tournament bracket is: What type of protection and restoration actions have the largest and most lasting impact on floodplain function and which types of actions are cost effective? This research need (from the rivers group) won in a close but decisive victory over […]