Study Looking At 65 Years Of Puget Sound Hatchery Practices Questions Trend Toward Releasing Larger Juvenile Fish
November 21st, 2019
A recent study examining salmon hatchery operations practices in the Salish Sea (Puget Sound) in Washington State for the past 65 years finds that current practices are releasing juvenile salmon at a larger size than in the past – a size preferred by predators – and with decreasing diversity. It calls for a consideration of modifying hatchery programs to allow for more diversity by reducing this size homogenization.
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Walleye Study Suggests Climate Change Should Prompt New Ways To Manage Inland Recreational Fisheries
November 20th, 2019
There's a long-standing belief in the freshwater fishing community that once anglers find it too hard to land a particular fish for their dinner plate, they either move on to fishing for different species or fish in new waters, giving depleted populations time to rebound.
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NOAA Fisheries Study Suggests Fish Size Affects Snake River Salmon/Steelhead Survival More Than Route Through Dams
November 14th, 2019
The survival of juvenile Snake River salmon and steelhead and their eventual return to spawning streams as adults depends more on the juveniles' size than the way they pass through hydroelectric dams on their migration to the ocean, new research shows.
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Study: Laundered Clothes Bringing Microplastics To Oysters, Clams On Oregon Coast Through Wastewater
November 13th, 2019
Tiny threads of plastics are showing up in Pacific oysters and razor clams along the Oregon coast -- and the yoga pants, fleece jackets, and sweat-wicking clothing that Pacific Northwesterners love to wear are a source of that pollution, according to a new Portland State University study.
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Science Panel Completes Review Of Report On Feasibility Of Reintroducing Anadromous Salmonids Above Grand Coulee Dam
November 7th, 2019
A panel of scientists completed a review of the Upper Columbia United Tribes’ phase 1 report that describes the feasibility of reintroducing salmon and steelhead into the reaches of the Columbia River upstream of Chief Joseph and Grand Coulee dams.
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Grande Ronde River Study Shows How Adding Fish Carcasses (With Eggs) Improves Juvenile Salmon,Steelhead Growth Rates
November 7th, 2019
The addition of steelhead carcasses to tributaries of the Grande Ronde River in northeastern Oregon resulted in short-term increases in the growth rates, body condition and size of juvenile chinook salmon and steelhead, factors that may contribute to their survival, according to a recent study.
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Middle Fork Salmon River: ‘Shifting Baseline Syndrome’ Skews Wilderness River’s True Abundance Potential For Spring/Summer Chinook
October 31st, 2019
Natural abundance potential of spring/summer chinook salmon in the Middle Fork Salmon River of Idaho recalculated by three biologists is far higher than most current management goals for the fish by NOAA Fisheries, the Nez Perce Tribe and the Idaho Department of Fish and Game, according to a recent study.
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Tags, Antennas Tracking Juvenile Salmon In Lemhi, Salmon Rivers To Estimate Travel Times, Survival
October 31st, 2019
Anglers fishing the upper Salmon River this fall and winter may notice large antennas in various locations near the riverbank.
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NOAA Identifies New Pacific Subspecies Of Fin Whale; 14,000-18,000 Whales Part of New Designation
October 31st, 2019
New genetic research has identified fin whales in the northern Pacific Ocean as a separate subspecies, reflecting a revolution in marine mammal taxonomy as scientists unravel the genetics of enormous animals otherwise too large to fit into laboratories.