The number of the larger steller sea lions searching for dinner in the Bonneville Dam tailrace was about the same for May this year as the numbers observed last year in May. However, the number of California sea lions has dropped this year.
Oregon has overestimated the historical number of coho salmon that ultimately spawned in coastal streams, according to the conclusions of a recent study, and it is likely that the number of coho spawning in Columbia River basin streams has also been overestimated.
The National Park Service has approved a plan to purge non-native fish in Glacier National Park’s Upper Camas Basin with a fish toxin, followed by efforts to re-stock the lakes with native westslope cutthroat trout and bull trout.
The Bonneville Power Administration, the primary source of funding for Columbia River basin fish and wildlife mitigation, is one step closer in its consideration of joining the Western Energy Imbalance Market.
One silver lining to emerge from the severe drought that impacted California earlier this decade was that it whetted an appetite to study the event and compile data designed to help fish and aquatic species better weather future droughts.
Steelhead anglers are asked to watch for tagged steelhead they might catch during the 2019-20 steelhead fishing seasons, and report tagged fish if they catch one.
When an unusually strong marine heat wave warmed the ocean off the West Coast from late 2014 to 2016, the effects reverberated through the marine ecosystem. One of the telltale changes was in copepods, tiny crustaceans that provide essential food for juvenile salmon as they first enter the ocean. Instead of energy-rich copepods that help the fish grow quickly, leaner copepods with less energy began to dominate. That left young salmon facing tougher odds in the ocean.
A new study finds that the world's marine fisheries form a single network, with over $10 billion worth of fish each year being caught in a country other than the one in which it spawned.
The U.S. Environmental Protection Agency and Oregon Department of Environmental Quality concluded the on-site investigation this week into reports of drums at the bottom of Wallowa Lake labeled with the herbicides “2,4-D or 2,4,5-T.”