Washington Predator-Prey Project: New Research Shows Coyotes, Bobcats Move Into Human Inhabited Areas To Avoid Cougars, Wolves

May 24th, 2023

Since their protection under the Endangered Species Act, wolf populations have been making a comeback in the continental United States. Conservationists have argued that the presence of wolves and other apex predators, so named because they have no known predators aside from people, can help keep smaller predator species in check.

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Oregon Legislation Offers More Flexibility In Managing Non-Native Game Fish -Bass, Walleye- That Gobble Up Native Salmon, Steelhead Smolts

May 5th, 2023

A legislative bill sitting on Oregon Gov. Tina Kotek’s desk waiting for signature would give Oregon more flexibility in managing predatory non-native game fish species --such as bass and walleye -- that consume salmon and steelhead smolts in the Columbia River basin.

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Tribes, Corps Studying Impacts Of Sediment Buildup (Deltas) At Mouths Of Columbia River Tribs; Impacts Temps, Predation, Salmon Survival

April 14th, 2023

The amount of sediment carried by Columbia River waters to the Pacific Ocean has declined by about half since Bonneville Dam was built in 1935. Much of the sediment no longer moved by the river has found a home at the mouths of tributaries, creating shallow sediment fans or deltas where warm water and predators impact juvenile salmon and steelhead, some listed under the federal Endangered Species Act.

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Concerning Drop In White Sturgeon Abundance Prompts Fisheries Managers To Recommend No Retention Fishing Below Bonneville Dam

February 8th, 2023

Oregon and Washington fishery agencies announced they will not propose commercial or recreational white sturgeon fishing this year downstream of Bonneville Dam due to a projected low abundance of legal-sized fish, according to a joint status report released this week by the states.

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Draft Report Documents 2022 Sea Lion Fish Predation Numbers At Bonneville Dam; Notes Huge Take Of Struggling White Sturgeon

February 8th, 2023

Sea lions continue taking a big bite out of spring fish runs at Bonneville Dam. More than 8 percent of winter steelhead and more than 3 percent of spring Chinook salmon were picked off by Steller and California sea lions that prey on the fish below the dam, according to a draft report by the U.S. Army Corps of Engineers.

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How Much Are Sea Lions, Seals Contributing To Salmon Decline In Washington Waters? Will Require Targeted Lethal Removal To Find Out

January 20th, 2023

There is a “preponderance” of evidence that sea lions and seals (pinnipeds) in Washington’s Salish Sea and outer coast have contributed to the decline of salmon and steelhead in state waters, concludes a recent report by the Washington State Academy of Sciences.

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