California Study On Active Predator Removal Shows No Changes In Predation Rates On Juvenile Salmon
February 27th, 2020
A recent study found that active removal of predators in the San Joaquin-Sacramento Delta in California as a way to protect a native and imperiled species may not get the intended results.
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New Avian Predation Plan Needed? Tribes Say Simply Moving Birds Around A Whack-A-Mole Exercise
February 13th, 2020
In 2015, nearly half of steelhead smolts that began their journey to the ocean at Rock Island Dam on the upper Columbia River did not survive the onslaught of birds that feed on the smolts along the way, according to Blaine Parker, avian predation coordinator at the Columbia River Inter-Tribal Fish Commission.
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Nearly 13,000 Pike Removed From Lake Roosevelt Since 2015, 3,658 Last Year; Co-Managers Report Funding Shortfalls To Maintain Effort
February 6th, 2020
Since 2015, when the efforts to suppress or eradicate non-native northern pike from Lake Roosevelt began, nearly 13,000 of the voracious fish have been removed from the huge reservoir that backs up behind Grand Coulee Dam on the upper Columbia River.
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Army Corps Using Laser At McNary Dam To Discourage Avian Predation On Juvenile Salmon
November 27th, 2019
In an effort to discourage birds from snatching up juvenile salmon below McNary Dam, the U.S. Army Corps of Engineers Walla Walla District has bought a laser.
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Efforts On Early Detection Monitoring Of Invasive Species – Mussels, Pike — In Washington State Detailed; Environmental DNA Major Tool
October 17th, 2019
Two different anglers on two different waterbodies, but both in the anadromous zone of the Columbia River basin and both on the same day – July 17, 2017 – say they saw one of the most feared invasive predators in the basin, a northern pike. But, their alleged sightings were quickly debunked … by science.
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Washington Moves Pike To Most Unwanted Invasive Species List; Would Allow Governor To Declare Emergency
October 3rd, 2019
Northern pike were promoted to a short list of the most unwanted invasive species in the state of Washington on Friday by the state’s Fish and Wildlife Commission.
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Review Of Avian Predation Management; Efforts Coming Up Short On Goals As Harassed Birds Relocate
September 19th, 2019
For the most part, the double-crested cormorants that abandoned one of the largest cormorant colonies in the world, located at East Sand Island in the lower Columbia River estuary, simply moved a couple of miles upstream to the Astoria-Megler Bridge, according to a study in process.
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Fight Against Pike: Washington FW Commission Considers Raising Threat Level, Would Allow Emergency Declaration If Found Below Grand Coulee
September 13th, 2019
As efforts continue to curb the proliferation of northern pike in the Columbia River Basin, the state of Washington and co-management agencies are pursuing additional funding and flexibility to respond to the voracious predators entering the “anadromous zone” downstream from Grand Coulee Dam.
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NOAA Releases For Comment Draft Plan To Kill More Than 400 Sea Lions In Columbia River To Reduce Predation
September 5th, 2019
NOAA Fisheries has released a draft plan for public comment to remove and kill as many as 416 California and Steller sea lions each year in a 180 mile stretch of the Columbia River from just downstream of Bonneville Dam at river mile 112 upstream to McNary Dam at river mile 292.