Idaho Develops New Genetics-Based Method To Count State’s Wolf Population, Replacing Camera-Based Estimates
August 9th, 2024
Idaho Fish and Game researchers have developed a new genetics-based method of estimating the state’s wolf population. The method uses genetic and age information taken from every harvested wolf checked by Fish and Game.
Read the full article...
Become a Member and get unlimited access to all articles.
Washington Predator-Prey Project’s Research Shows Wolves In NE Washington Not Having Much Impact on Deer
July 17th, 2024
Humans drove wolves to extinction in Washington state around the 1930s. Thanks to conservation efforts, by about 80 years later, wolves had returned
Read the full article...
Become a Member and get unlimited access to all articles.
Sea Lion Trapping Begins; 2023 Pinniped Report Notes Predation Impacts To ESA Steelhead Twice As Severe Compared To Spring Chinook
April 5th, 2024
As states and tribes begin trapping and euthanizing sea lions in the Columbia River near Bonneville Dam this week, the U.S. Army Corps of Engineers released its 2023 report on last year’s pinniped abundance and predation of salmon and steelhead. The report covers the period July 2022 through May 2023 and shows that the 104 sea lions observed during the 2023 reporting period is the highest since 2018, when the number was 134.
Read the full article...
Become a Member and get unlimited access to all articles.
Invasive Walleye Moving Higher Into Snake River Basin, Threatening Wild, Hatchery Stocks Of Juvenile Salmon, Steelhead, Lamprey
March 22nd, 2024
Walleye, an invasive species with a reputation for a voracious appetite, has moved down the Columbia River from Lake Roosevelt and are now being counted in increasing numbers upstream of Lower Granite Dam on the Snake River, according to a report by the Idaho Department of Fish and Game.
Read the full article...
Become a Member and get unlimited access to all articles.
Déjà Vu: Oregon Study Says Once Again Salmon-Eating Cormorants Need To Somehow Be Relocated From Astoria Bridge Back To Estuary Island
November 16th, 2023
The thousands of double-crested cormorants nesting on the 5-mile-long Astoria-Megler Bridge in the Columbia River estuary that are damaging the bridge, causing safety problems and eating more salmon and steelhead smolts must go, according to a value engineering study led by the Oregon Department of Transportation.
Read the full article...
Become a Member and get unlimited access to all articles.
Bad News For Salmon: Walleye Spreading Into Idaho, Most Reports Ever Of Walleye Upstream Of Lower Granite Dam
August 23rd, 2023
Idaho Fish and Game has received more verified reports and pictures from people catching walleye in the Hells Canyon reach of the Snake River and Salmon River in 2023 than in all previous years.
Read the full article...
Become a Member and get unlimited access to all articles.
Is A Growing American White Pelican Population In Mid-Columbia River Threat To Salmonids? Researchers Now Studying Predation Impacts
August 10th, 2023
A growing American white pelican population on an island in the mid-Columbia River basin could be a new threat to salmon and steelhead. The large white birds not only scoop out batches of juvenile fish, they also have been known to eat adult salmon, including sockeye salmon and other fish as large as 29 inches.
Read the full article...
Become a Member and get unlimited access to all articles.More Letters, Meetings About What To Do With Salmon-Eating Cormorants On Astoria Bridge; Chase Them Back To East Sand Island? Culling?
June 16th, 2023
In a January letter, the Northwest Power and Conservation Council invited Oregon and Washington transportation agencies to meet jointly to discuss their mutual problem of double-crested cormorants on the Astoria-Megler Bridge that spans the Columbia River estuary at Astoria, OR.
Read the full article...
Become a Member and get unlimited access to all articles.
Researchers Survey Studies Of Avian Predation Of Columbia River Salmon, Steelhead; Identify Trends, Predator-Prey Dynamics, Fish Susceptibility Factors
June 8th, 2023
The breeding season for avian predators, March–August, overlaps with the peak out-migration of juvenile salmon and steelhead, April -- August, according to a recent survey of literature that looked specifically at peer-reviewed studies of Caspian terns, double-crested cormorants and gulls that prey on salmonids in the Columbia River basin.