The Invasion Strengthens
- September 13, 2016
- John Harrison
Researchers have documented an increase in juvenile northern pike in Lake Roosevelt. This is not good news.
Category – Fish and wildlife
Cold-water Species In A Warming Climate
- August 12, 2016
- John Harrison
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
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
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
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
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
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
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
Researchers in Idaho find hatcheries can help stabilize a declining salmon population, but not permanently.
Chinook run increases, and so do sea lions
- May 03, 2016
- John Harrison
The U.S. Army Corps of Engineers reports that so far this year sea lions are killing more spring salmon than the 10-year average.
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