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Two fish swimming underwater with rocks below them.

Will the mighty spring Chinook rise again?

Our series 'Returning home: The Elwha's genetic legacy' continues with a look at the possible return of spring Chinook to the upper portions of the Elwha River. We bring you part three of seven.

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Three salmon with green heads and red bodies seen underwater
6/25/2022

Sockeye among 'biggest unknowns' for Elwha salmon recovery

The return of sockeye to the Elwha River is intriguing scientists. Could nearby freshwater kokanee help re-establish resident populations? We continue with part four of our series 'Returning home: the Elwaha's genetic legacy.' 

Underwater view of a large group of silver and grey fish
6/25/2022

Opening the door for coho, chum, and pink salmon

Restoration managers are hopeful that populations of coho, chum and pink salmon will rebound on the Elwha River as the fish take advantage of newly accessible habitat. Part five of our series 'Returning home' examines the importance of genetically distinct salmon runs.

Underwater view of a single fish with red and white spots swimming above rocks
6/25/2022

Good news for bull trout in the Elwha

Bull trout appear to be thriving in nearly every section of the Elwha River. Populations there have at least doubled in the years since dam removal, signalling good news for a species that has struggled throughout the West. We bring you part six of our series 'Returning home: The Elwha's genetic legacy.'

Underwater view of two Pacific lamprey resting on rocks and sand.
6/25/2022

Lamprey legacy continues after dam removal

Prehistoric-looking lamprey are recolonizing parts of the Elwha River that they have not occupied for more than 100 years. Like salmon, the culturally and ecologically important fish also move from saltwater into rivers to spawn. And like salmon, lamprey were devastated by the dams that once blocked their way. We conclude our series 'Returning home: The Elwha's genetic legacy.'   

View of the Elwha River above the site of the former Glines Canyon Dam in 2021. Photo: Sylvia Kantor
6/20/2022

Returning home: The Elwha's genetic legacy

Following dam removal, migratory salmon have been free to swim into the upper Elwha River for the first time in 100 years. Their actual behaviors and reproductive success may well be driven by changes in their genetic makeup. Our seven-part series 'Returning home' examines how the fish are doing and whether the Elwha's genetic legacy remains intact. 

A single steelhead trout swimming under water with rocks in background
6/20/2022

Wild steelhead still a force in the Elwha

Migration patterns have apparently reawakened for the Elwha River's wild steelhead. Studies show that the fish may have retained much of their genetic drive despite 100 years of being trapped behind dams. We continue our series 'Returning home: The Elwha's genetic legacy' with part two of seven. 

A killer whale with a digital acoustic recording tag swimming in Puget Sound . Photo: NOAA/NWFSC (taken under NOAA research permit No.781-1824 and 16163).
6/16/2022

Placing microphones on orcas offers a point-of-whale perspective on underwater noise

Research on the sounds and feeding behavior of Puget Sound's southern resident orcas is providing new insight into how the whales respond to underwater noise. A recent online conference brought together some of these findings along with discussions on how to reduce the impacts of noise from vessel traffic.

Two people in a small boat next to large boat being lifted from the water
6/9/2022

Derelict vessels prompt cleanup efforts

A state law going into effect this month will significantly increase funding for the cleanup of abandoned and derelict vessels in Puget Sound. The funding will add about $4.3 million annually to remove hazardous sunken wrecks and related pollutants.

An adult yelloweye rockfish foraging for prey. Photo: Victoria O'Connell
6/2/2022

Are yelloweye rockfish on the path to recovery?

New research suggests that recovery efforts are working for Puget Sound’s threatened yelloweye rockfish. Preliminary models show "considerable improvement" in population numbers.

Puget Sound Institute headquarters at the Center for Urban Waters in Tacoma
5/18/2022

A boundary spanning system supports large-scale ecosystem-based management

A 2022 article in the journal Environmental Science & Policy looks at how knowledge exchange across organizations influences science-based ecosystem recovery in Puget Sound. The University of Washington Puget Sound Institute describes its work to identify and communicate key scientific findings that support funding and policy decisions on an ecosystem scale.

Mudflats at low tide with numerous small mounds of sediment
5/15/2022

'Invertebrate engineers' combat sea level rise

A pilot project to create a 'living dike' in Canada's Boundary Bay is designed to help a saltwater marsh survive rising waters due to climate change.

A white beluga whale swiming near the surface of the water.
4/21/2022

Species account: A lone beluga whale visits the Salish Sea

A series of beluga whale (Delphinapterus leucas) sightings in southern Puget Sound in October 2021, added a new set of records for the species in this region. The 2021 event represents the longest period of time a beluga has been observed so far south of Alaska, in the eastern North Pacific. This may have just been an isolated event of a single extralimital individual. Alternatively, it may suggest a potential range expansion that could portend future increased visits by this species in the Pacific Northwest, especially if warming of Arctic waters continues.

Black and white photo of two men standing in front of a canvas shack with mountain and glacier behind it.
4/7/2022

The retreating glaciers of Puget Sound

Puget Sound's glaciers are melting rapidly due to climate change. The North Cascades mountains have lost about 56% of their glacial ice while estimates show that glaciers in the Olympics could be gone within the next 50 years. Scientists say salmon and other species could be hard hit as the region loses its “giant storage tank” of ice.

4/6/2022

Interactive map of Puget Sound and the Salish Sea

Use our interactive map to determine if a geographic feature is within the boundaries of the Puget Sound or Salish Sea watersheds. The Puget Sound region includes the area within the United States while the Salish Sea region* encompasses the entire shaded area. Areas that influence circulation in the Salish Sea or eventually drain into the estuary are marked by broader boundaries.

Two people operating a bulldozer at the intersection of two flooded streets in Sumas, Washington. In the background, partially submerged cars are parked in front of the library.
3/22/2022

Rethinking flood control for the Nooksack River

Can restoring the natural balance of the Nooksack River also reduce flood risks? Officials on both sides of the U.S.-Canada border are taking note as climate change raises the stakes. 

Report cover
3/18/2022

Eyes Over Puget Sound: Surface Conditions Report - February 25, 2022

The winter was cold and wet, resulting in a good snowpack in the mountains to sustain river flows into summer. In Puget Sound, saltier waters in summer transitioned to fresher conditions by fall 2021. Water temperatures in late winter 2022 are now colder and oxygen levels are high. From the air, Puget Sound looks spectacular, with few events to report. First signs of the spring bloom were visible in protected bays and passes. Port Susan and Carr Inlet already show sizable patches of drifting organic material. Small jellyfish patches were  present in Eld Inlet.

Data image showing marine heatwave known as the Blob
2/27/2022

Model of heatwave 'blob' shows unexpected effects in the Salish Sea

The marine heatwave that struck the Pacific Ocean in late 2013 also caused large changes in temperature in the Salish Sea, but scientists are still puzzling over the impacts of those changes on Puget Sound's food web. The so-called "blob" of warmer than average water was thought to have increased the production of plankton, which potentially benefits creatures like herring and salmon that feed on the tiny organisms. A new paper in the journal Frontiers in Marine Science calls that interpretation into question pointing to a computer model that links the cause to higher than normal river flows in the region.   

Graphic image of tidal channels
2/25/2022

How do you build an estuary? The answer lies in Puget Sound’s geologic history

Puget Sound is often referred to as the second largest estuary in the United States behind only Chesapeake Bay, but its overall size may be less important than its complexity. The place is defined by the mixing of saltwater from the ocean and freshwater from inflowing creeks and rivers that create an almost alchemical transformation of habitat. In this article, we look at the geologic forces that formed Puget Sound and made it the dynamic system that we understand today.   

Marine technician Sony Brugger, right, retrieves underwater sampling equipment during a December 2020 research cruise aboard the RV Rachel Carson. Tor Bjorklund, left, is marine engineer and chief scientist during on the cruise off Alki Point, seen in the background. (UW photo)
1/21/2022

Scientists look for answers in methane bubbles rising from bottom of Puget Sound

Large plumes of methane bubbles have been discovered throughout the waters of Puget Sound prompting questions about the Puget Sound food web, studies of earthquake faults and climate-change research.

Eyes Over Puget Sound report cover
1/7/2022

Eyes Over Puget Sound - 2021 Year in Review

The year 2021 was generally drier and warmer including a heat wave in June. Higher river flows followed a rainy and cloudy fall. In 2021, EOPS aerial images continued to capture the diversity of phenomena on the water, with support from its wonderful contributors who documented visible water quality issues across the larger Puget Sound region. With our Artists Corner and story maps on critters in the mud, we hope to continue to inspire, educate, and motivate our community to keep curious and watchful eyes over the environment.

Bluntnose sixgill shark (Hexanchus griseus). Photos courtesy of NOAA Ship Okeanos Explorer.
12/16/2021

Why are so many sixgill sharks washing up in Puget Sound?

Over the past year, the Washington Department of Fish and Wildlife has reported an unusually high number of sixgill sharks found washed up along Puget Sound's shoreline. Four dead sharks in all were spotted, alarming scientists who believe that the large predators use Puget Sound as a pupping ground. Sixgills are rarely seen in Puget Sound but are one of its largest fishes, reaching lengths of up to 16 feet. Some speculate that warmer-than-usual waters could be a factor in the deaths, but the cause remains a mystery. We spoke with Fish and Wildlife biologist Lisa Hillier.

Two people carry a creosote-treated log on beach with calm water in the background.
11/19/2021

Improving the probability that small-scale science will benefit conservation

A 2021 article in the journal Conservation Science and Practice analyzes the conservation benefits of small-scale, competitively funded scientific research in the Salish Sea. The findings show that collaboration, networking, and stakeholder engagement before, during and after the research are key factors.

A school of brightly colored orange fish shown swimming near kelp.
11/18/2021

Learning from a legacy of overfishing

Fishing for rockfish was once promoted as a sustainable alternative to salmon harvests, but when rockfish numbers plummeted, fisheries managers realized they had a problem. Now a rockfish recovery plan seeks to reverse the damage as scientists learn more about protecting this once-popular game fish.

Winter scene of marsh at high tide two conifer trees reflected on water in the foreground; snow covered mountain in the background.
11/15/2021

Making room for salmon

How can Puget Sound generate more salmon? That question has been at the center of ecosystem recovery efforts for decades. But even as scientists and conservationists make progress on many fronts — from breaching dams to cleaning up the water — they have faced one especially complicated and frustrating limitation: Salmon need more estuaries. We look at how local tribes are working to restore this critical habitat.

Report cover
11/1/2021

State of the Sound report 2021

The 2021 State of the Sound is the Puget Sound Partnership’s seventh biennial report to the Legislature on progress toward the recovery of Puget Sound. The document reports on both the status of the Partnership's recovery efforts and a suite of ecosystem indicators referred to as the Puget Sound Vital Signs.

Aerial view of kokanee salmon swimming in a stream
10/29/2021

Lost freshwater salmon population may still inhabit Lake Washington

Scientists think they may have discovered a lost population of native kokanee salmon in Lake Washington. Salmon watchers are monitoring local creeks this fall to confirm the finding.

View of river with reflection of clouds and vegetation
10/28/2021

Puget Sound National Estuary Program Synthesis of Integrated Floodplain Management in Selected Puget Sound River Deltas

A 2021 synthesis report from the University of Washington Puget Sound Institute synthesizes leading integrated floodplain management approaches to support the EPA-funded Floodplains and Estuaries Implementation Strategy.

Report cover
10/27/2021

Puget Sound Marine Waters 2020 Overview

The tenth annual Puget Sound Marine Waters Overview looks at marine water quality and other conditions in the region in 2020. According to the report, there were few extreme weather or ecological events in 2020, but overall, conditions in Puget Sound were generally warmer, sunnier, and wetter than in typical years. The overview also examines patterns and trends in numerous environmental parameters, including plankton, water quality, climate, and marine life. 

Two people lift a basket of rocks from a stream flowing through a forest.
10/21/2021

Can 'bug seeding' improve the health of local creeks?

Bug seeding involves moving beneficial insects and other aquatic invertebrates from healthy streams to streams where these creatures are missing from the food web.

Graphical abstract showing E.coli isolates characterized for phenotypic and genotypic resistance to antibiotics
10/8/2021

Surveillance for antibiotic-resistant E.coli in the Salish Sea ecosystem

A 2021 study published in the journal Antibiotics suggests that animals may be potential sentinels for antibiotic-resistant and extraintestinal pathogenic E. coli in the Salish Sea ecosystem. 

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