native fish

A salmon success story during the drought

Average returns of fall-run Chinook salmon on the Shasta River in the past four years have quadrupled, even during the drought. No one knows for sure why. However, the condition of the habitat dramatically improved soon after cattle were fenced out of an ecologically important spring-fed tributary, Big Springs Creek. Ann Willis, a Center researcher who has monitored the changes for several years, tells the story to Capital Public Radio's environment reporter Amy Quinton.

Center ecologists spotlight north Delta, Suisun Marsh

Several Center for Watershed Sciences researchers are presenting at this week's Bay-Delta Science Conference in Sacramento.

On Wednesday, ecologist John Durand, fish biology professor Peter Moyle and others are scheduled to present their latest findings on ecosystems in the north Sacramento-San Joaquin Delta and Suisun Marsh.

Suckers for gold: recreational dredgers can wreck stream beds

High Country News (May 28, 2014) — Environmental writer Ted Williams quotes Peter Moyle in an op-ed rebutting claims by recreational gold-dredgers that the activity does not harm fish and might even help them.  “'Is churning up hundreds of square meters of river bottom worth the 3.4 ounces of gold the average dredger collects in a season?' inquires fisheries professor Peter Moyle of the University of California at Davis.

Are Central Valley steelhead really 'threatened'?

Wild steelhead on Feather River by Carson Jeffres

Peter Moyle has been documenting the status of California native fishes for as long as the United States has had an Endangered Species Act. That would 40 years, as of this month. In today's California Water Blog post, the UC Davis professor of fish biology makes a case for removing the Central Valley steelhead from the federal government's list of species threatened or endangered with extinction - based on new information that became available because of the law.

California native fish could disappear with climate change

Los Angeles Times (May 31, 2013)

Climate change could be the final blow for many of California’s native fish species, pushing them to extinction with extended drought, warmer water temperatures and altered stream flow.

The authors of a new study published online in the journal PLOS ONE used 20 metrics -- including species population trends, physiological tolerance to temperature increase and ability to disperse -- to gauge the vulnerability of native fishes to climate change.