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Encyclopedia of Puget Sound


Salish Sea Currents

timely, local stories about ecosystem recovery

Welcome to Salish Sea Currents, an online magazine grouped into themed series. Join us as we report on some of the key issues driving Puget Sound recovery. To be notified of new stories, subscribe to the Puget Sound Institute eNews.

Implementation Strategies

New EPA-funded Implementation Strategies are designed to target Puget Sound recovery in the most direct and coordinated way ever conducted by state and federal agencies. We report on how these strategies will affect Puget Sound’s Vital Signs for years to come, and why you should care (a lot). Sponsored by U.S. EPA.


Invasive species in Puget Sound

A main story and 3 vignettes on the sources, impacts, and regulation of non-native species entering local waters. Sponsored by U.S. EPA and Washington Department of Fish and Wildlife.


Themes from the 2016 Salish Sea Ecosystem Conference

A series covering major science themes presented at SSEC16 in Vancouver, BC. Sponsored by U.S. EPA and the Salish Sea Ecosystem Conference.


SSEC16 snapshots

Brief reports on SSEC16 in Vancouver, BC. Sponsored by U.S. EPA and the Salish Sea Ecosystem Conference.


Rethinking shoreline armoring

An in-depth series on issues related to shoreline armoring in the Puget Sound region. Sponsored by U.S. EPA and Washington Department of Fish and Wildlife.


Disease as an ecological force

A main story and two vignettes on impacts of disease in the ecosystem. Sponsored by U.S. EPA.


Themes from the 2014 Salish Sea Ecosystem Conference

A 10-story series covering major science themes presented at SSEC14 in Seattle, WA. Sponsored by U.S. EPA and the Puget Sound Partnership.

Shoreline restoration turns to private property owners

By removing bulkheads where they can, property owners are improving shoreline habitat, one piece at a time. Officials from county and nonprofit groups have been offering assistance and finding new ways to connect with property owners.

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Pat Collier walking along the restored beach in front of her Maury Island home. Photo: Christopher Dunagan/PSI

Shoreline armoring's effect on the food web

The removal of shoreline armoring in Puget Sound has become a priority for state and federal agencies, but until recently there have been relatively few scientific studies of armoring's local impact. New research looks at the pronounced biological and ecological effects of these common shoreline structures, especially for tiny beach-dwelling creatures that make up the base of the food web.

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Storm surges against the bulkheads protecting beach houses at Mutiny Bay, WA. Photo: Scott Smithson (CC BY-NC-ND 2.0) https://www.flickr.com/photos/dtwpuck/15725058917

Will Ballard Locks withstand a major earthquake?

For close to 100 years, Seattle's Ballard Locks has been one of the region's busiest waterways, drawing major boat traffic along with millions of tourists. But as it prepares to celebrate its centennial, the aged structure is also drawing the concern of engineers. They worry that an earthquake could cause the locks to fail, draining massive amounts of water from Lake Washington and Lake Union. In some scenarios, the two lakes could drop by as much as 20 feet, stranding boats, disabling bridges and causing big problems for salmon restoration.

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Ballard Locks from the air. Photo: Jeff Wilcox (CC BY-NC 2.0) https://www.flickr.com/photos/jeffwilcox/4805933588

Disease in herring threatens broader food web

Pacific herring have long been considered an essential part of the Puget Sound food web. Now, studies are beginning to reveal how diseases in herring could be reverberating through the ecosystem, affecting creatures large and small. We continue our coverage of the ecological impacts of disease in Puget Sound with this look at the region's most well-known forage fish.

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Pathogen-free herring are reared from eggs to allow a wide range of experiments on infectious organisms at the Marrowstone Marine Field Station. Photo: Christopher Dunagan

Are diseases playing a role in salmon decline?

Chinook, coho and steelhead populations in Puget Sound have declined dramatically over the past 30 years. In some cases, counts of fish returning to the rivers are just a tenth what they were in the 1980s. While many possible causes of this decline are under consideration, some researchers are focusing on the combined effects of predators and disease. This article continues our coverage of the ecological impacts of disease in Puget Sound.

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Steelhead (Oncorhynchus mykiss). Photo: Eric Engbretson, U.S. Fish and Wildlife Service

Stormwater fixes could cost billions

Pollution from stormwater has been called one of the greatest threats to Puget Sound. How much will it cost to hold back the rain? A new EPA-funded study says the price could reach billions per year, a figure that dwarfs current state and federal allocations.

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Raindrops on a cafe window.  Photo: Jim Culp (CC BY-NC-ND 2.0) https://www.flickr.com/photos/jimculp/7140363701

Gifts from the sea: shellfish as an ecosystem service

The shellfish industry is a cornerstone of the Puget Sound economy, but the region's famed mollusks provide more than just money and jobs. They offer what are called ecosystem services—a wide variety of benefits that humans derive from an ecosystem.

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Olympia oysters. Photo: VIUDeepBay (CC BY 2.0) https://www.flickr.com/photos/viucsr/5778358466

Brighter future for salmon at downtown seawall

The decaying seawall along Seattle’s waterfront is providing scientists with an opportunity to improve long-lost habitat for migrating salmon. It could also show the way for habitat enhancements to crumbling infrastructure worldwide. One University of Washington researcher describes the project.

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Seattle's central waterfront at sunset. Photo: Michael Matti (CC BY-NC 2.0) https://www.flickr.com/photos/michaelmattiphotography/9090323308/

Citizens now the leading cause of toxics in Puget Sound

New research presented at the 2014 Salish Sea Ecosystem Conference shows that some of the greatest dangers to Puget Sound marine life come from our common, everyday activities. These pervasive sources of pollution are so woven into our lives that they are almost invisible to us, but it’s becoming impossible to ignore their effects.

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Stormwater flowing into catch basin carries contaminants to our waterways. Photo: Ben McLeod (CC BY-NC-SA 2.0) https://www.flickr.com/photos/benmcleod/420158390

No salmon left behind: The importance of early growth and freshwater restoration

The growth and survival of young salmon in streams, river deltas and floodplains are seen as crucial pieces of the salmon recovery puzzle. In part two of this two-part series, researchers at the Salish Sea Ecosystem Conference in Seattle say the complexities of the salmon life cycle require new coordination among scientists.

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Nisqually Reserve Fish Sampling March 2012. Photo: Michael Grilliot, DNR (CC BY-NC-ND 2.0) https://www.flickr.com/photos/wastatednr/6834386824

What is killing young salmon in Puget Sound?

Scientists say Puget Sound’s salmon are dying young and point to low growth rates in the marine environment as a possible cause. In part one of this two-part series, scientists consider threats facing young salmon in the open waters of Puget Sound.

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Chinook Salmon (juvenile) Photo Credit: Roger Tabor/USFWS. https://www.flickr.com/photos/usfwspacific/6093338474

Shedding new light on eelgrass recovery

Scientists say eelgrass, an unassuming flowering plant found just off shore in Puget Sound, is vital to the health of the ecosystem. They also say the plant is declining. New and increasingly urgent efforts to restore it brought a group of researchers to the 2014 Salish Sea Ecosystem Conference.

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Inside the Eelgrass beds. Photo: Eric Heupel (CC BY-NC 2.0) https://www.flickr.com/photos/eclectic-echoes/7654885752

Declines in marine birds trouble scientists

Why did all the grebes leave? Where did they go? And what does their disappearance say about the health of the Salish Sea? Seasonal declines among some regional bird species could hold important clues to the overall health of the ecosystem.

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Western grebe. Public Pier, Blaine, WA. Photo: Andrew Reding https://www.flickr.com/photos/seaotter/10298390254

About the Salish Sea Currents series

Last spring, the Salish Sea Ecosystem Conference in Seattle brought together more than a thousand of the region's leading scientists and managers with one clear goal: To better understand the state of the ecosystem and to look to the future. It was the premier showcase for the science driving Salish Sea recovery, and a rare opportunity.

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2014 Salish Sea Ecosystem Conference logo

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