Alaska Salmon Getting Smaller, Returning To Rivers Younger; Climate Change, Competition With Growing Numbers Of Hatchery Fish In Ocean

August 19th, 2020

The size of salmon returning to rivers in Alaska has declined dramatically over the past 60 years because they are spending fewer years at sea, according to a new study led by researchers at the University of California, Santa Cruz, and the University of Alaska Fairbanks.

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In New Research NOAA Scientists Introduce ‘Thermal Displacement’ Metric Showing How Ocean Heatwaves Shift Habitats

August 6th, 2020

Marine heatwaves across the world's oceans can displace habitat for sea turtles, whales, and other marine life by 10s to thousands of kilometers. They dramatically shift these animals' preferred temperatures in a fraction of the time that climate change is expected to do, new research shows.

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How Do Steelhead Build Their Nests? Eavesdropping Seismic Sensors In Washington River Stirs Up Some Answers

July 30th, 2020

Steelhead trout stir up the sediment of the river bed when building their spawning pits, thus influencing the composition of the river bed and the transport of sediment. Until now, this process could only be studied visually, irregularly and with great effort in the natural environment of the fish.

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