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Category – Fish and wildlife

Upper Columbia Salmon Habitat

September 14, 2016
John Harrison

None

An assessment of potential salmon habitat will help inform a future decision about whether and where to reintroduce ocean-going fish to the area above Chief Joseph and Grand Coulee dams, which has been blocked to salmon for more than 70 years.

The Invasion Strengthens

September 13, 2016
John Harrison

None

Researchers have documented an increase in juvenile northern pike in Lake Roosevelt. This is not good news.

Cold-water Species In A Warming Climate

August 12, 2016
John Harrison

None

A warming climate, habitat degradation, and predation by an introduced species threaten native bull trout in Montana, but a joint effort involving Montana, the Salish and Kootenai Tribes, and an an international agreement with British Columbia aims to protect and restore the cold-water species.

Cold Water Refuge

August 11, 2016
John Harrison

None

Like people seeking shade outside on a hot day, salmon and steelhead look for pockets of cold water as they migrate home from the ocean to spawn, a search that will become increasingly important, and perhaps more difficult, as the climate warms.

Salmon Smorgasbord

July 14, 2016
John Harrison

None

Ongoing research, recently wrapped up for this year, shows seals and sea lions continue to feast on Columbia River spring Chinook.

Fish And Warm Water Don't Mix

June 20, 2016
John Harrison

None

Fish managers and dam operators in the Columbia River Basin are ready to respond if water temperatures rise to lethal levels, as they did in the summer of 2015.

Culling Cormorants May Not Help Fish Survival

May 20, 2016
John Harrison

None

A preliminary analysis by a U.S. Department of Fish and Wildlife scientist suggests no effect on the survival of Snake River steelhead.

Sea Lions Feast on Salmon and Steelhead at Bonneville Dam

May 19, 2016
John Harrison

None

Fish kills peak in the first week of May, then decline. More than 50 of the most aggressive hunters have been permanently removed.

Cold-Water Hangouts in a Hot River

May 11, 2016
John Harrison

None

Water scientists are searching the Columbia River Basin for the cold-water places where salmon can rest when the water temperature goes lethal.

Hatcheries and Wild Salmon: Results From Nearly 30 Years of Study

May 10, 2016
John Harrison

None

Researchers in Idaho find hatcheries can help stabilize a declining salmon population, but not permanently.

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