USFWS Releases Strategy To Avoid Extinction Of Northwest Spotted Owls: Lethally Remove Small Numbers Of Invasive Barred Owls

July 4th, 2024

The U.S. Fish and Wildlife Service this week released its final environmental impact statement analyzing proposed barred owl management alternatives to protect northern and California spotted owls in Washington, Oregon and California from invasive barred owls.

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Bass Predation Primary Reason For Struggling Wild Chinook In Oregon River, ODFW Allowing Spearfishing To Remove The Invasive Fish

July 4th, 2024

Spearfishing for bass is allowed on southwest Oregon’s Coquille River through Oct. 31. Spears, spear guns and angling with bait to take smallmouth bass is allowed, and there are no harvest size or limits.

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For First Time Invasive, Predatory Pike Show Up In Montana Clark Fork River Tributary, Posing Threat To ESA-Listed Bull Trout

June 21st, 2024

Montana Fish, Wildlife & Parks is asking anglers to report any northern pike caught or observed in the Bull River, a tributary of the Clark Fork River, following the first confirmed detection of the predacious non-native fish. The Clark Fork River in northwest Montana flows into Lake Pend Oreille in northern Idaho.

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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.

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Efforts To Suppress Salmon-Eating Northern Pike In Upper Columbia Successful, But Require Long-Term, Sustained Effort

February 16th, 2024

Efforts to suppress northern pike in reservoirs upstream of Chief Joseph and Grand Coulee dams so far have been successful at keeping the voracious predator from populating waters downstream in what is considered the “anadromous zone” where it is feared the invasive fish would decimate salmon and steelhead runs in the Columbia River basin. Many of those anadromous fish are listed under the federal Endangered Species Act.

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IDFG Surveys Impact On Fish From Copper Treatment Used To Kill Quagga Mussels In Snake River; Tons Of Dead Fish, While Some Species Survived

December 13th, 2023

Idaho Fish and Game biologists quickly learned that the copper treatment to rid a stretch of the Snake River from quagga mussels caused high mortality in certain species – at least six to seven tons of dead fish -- while others survived quite well.

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Idaho Details Successful Eradication Treatment Of Invasive, Destructive Quagga Mussels In Snake River, First Sighting In Columbia River Basin

November 16th, 2023

Idaho completed a 10-day treatment to rid a sixteen-mile section of the mid-Snake River near Twin Falls of quagga mussel larvae (veligers) and at least two adult mussels. The state says the treatment was largely successful, although it and other partners will continue to test for at least the next five years.

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Scientists Review Pikeminnow Removal Rewards Program; Decrease In Abundance Concurrent With Bass, Walleye Increase?

October 26th, 2023

Studies over the 33-year history of a program designed to remove Northern Pikeminnow, a natural predator of salmon and steelhead smolts, from the Columbia and Snake rivers still has not been able to make a direct connectionbetween mass removals of the predator and recovery of salmonids in the rivers, according to a recent report by the Independent Scientific Review Panel.

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IDFG Says Invasive Walleye Established In Lake Lowell Near Nampa, Concerns About Spread Into Snake River

October 26th, 2023

Idaho Fish and Game biologists learned on Oct. 10 that Lake Lowell near Nampa now likely has a reproducing population of walleye. While the effects to Lake Lowell and other area fisheries are uncertain at this point, they are concerned about what this might mean for this fishery and others in Southwest Idaho, including the Snake River below Hells Canyon, which is a major migration corridor for salmon and steelhead.

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