“To repeat the obvious, that means in 2006 an estimated 42 percent of the spawners in this “wild” population were hatchery fish. Statistical modeling indicated the number of steelhead smolts barged in the Snake River in the previous several years was a strong predictor of PHOS (Percent Hatchery Origin Spawners).”
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A recent study reconstructed climate for Southwestern North America, including California, Nevada, Arizona, and New Mexico, and found the years 1575-1593 and 2000-2018 had the most severe prolonged droughts in the last 1,200 years.
It’s safe to say no one thought the model created for trout would end up estimating human populations in remote areas of Africa.
“Her success is the result of years of pure grit. There is no way to add it all up and do proper justice to Helen’s commitment to native trout. I am absolutely delighted to see her efforts recognized with the Award of Merit. It’s a well-deserved and high honor to one of our best.”
Summer run steelhead were thought to be extirpated in Washington’s Elwha River, after two dams blocked fish passage for a century. Both dams were removed by 2014. How wild summer steelhead responded amazed scientists and steelhead advocates. Check out the new film from Trout Unlimited and North Fork Studios on the remarkable recovery of summer steelhead in the Elwha on TU’s YouTube channel APRIL 17 AT 6 PM Pacific Time.
Mature invasive lake trout numbers are decreasing in Yellowstone Lake and Yellowstone cutthroat trout continue to increase as a result of intensive netting efforts.
Monitoring steelhead and salmon using sonar
Highlights of the important restoration work on the Manistee
On April 7, the long effort to restore the Klamath River and its once-prolific salmon and steelhead runs passed another major milestone when the California State Water Resources Control Board (SWRCB) issued its Clean Water Act Section 401 water quality certification for the removal of the Lower Klamath Project. The Lower Klamath Project includes the … Read more