Category Archives: Biology

Evolutionary genomics informs salmon conservation

by Tasha Thompson, Michael Miller, Daniel Prince and Sean O’Rourke Spring Chinook and summer steelhead (premature migrators) have been extirpated or are in decline across most of their range while fall Chinook and winter steelhead populations (mature migrators) remain relatively healthy. … Continue reading

Posted in Biology, Conservation, Fish | Tagged , , , | 1 Comment

The Future of California’s Unique Salmon and Trout: Good News, Bad News

by Robert Lusardi, Peter Moyle, Patrick Samuel, and Jacob Katz California is a hot spot for endemic species, those found nowhere else in the world.  Among these species are 20 kinds of salmon and trout. That is an astonishing number … Continue reading

Posted in Biology, California Water, Climate Change, Conservation, Fish, reconciliation, Salmon, Stressors, Uncategorized | Tagged , , , | 7 Comments

Facing Extinction II: Making hard decisions

by Jason Baumsteiger and Peter Moyle In part I of our blog, we projected a bleak future for many freshwater fishes, especially in California. Some difficult decisions will need to be made to prevent extinctions or to verify them.  However … Continue reading

Posted in Biology, Conservation, Fish, Planning and Management | Tagged , | 3 Comments

Facing extinction: California fishes

by Peter Moyle and Jason Baumsteiger At least two species of California fishes appear to be facing imminent extinction in the wild: delta smelt and winter-run Chinook salmon.  These species could join about 57 other North American fishes declared extinct. … Continue reading

Posted in Biology, Conservation, Fish, Planning and Management | Tagged , | 5 Comments

What lies behind the dam? In some cases, self-sustaining salmon

By K. Martin Perales Chinook salmon are a remarkably adaptable species. There is good reason to believe there are multiple populations of landlocked Chinook salmon completing their entire life cycle above Central Valley dams. We recently documented spawning above six of … Continue reading

Posted in Biology, Conservation, Fish, Salmon | Tagged | 4 Comments

Why care about native freshwater fish?

By Jason Baumsteiger Even with a strong El Niño year, there are no assurances the drought is over. Clearly we need a better plan for future droughts and that plan needs to include provisions for native freshwater fish.  But why … Continue reading

Posted in Biology, Conservation, Fish, Uncategorized | Tagged | 6 Comments

Science takes flight: aerial imagery provides new opportunities and insights

By Devon Lambert Remote sensing is all the rage as we start the New Year, largely due to its ability to exponentially increase our areas of analysis for research. What used to take us weeks to survey with traditional field … Continue reading

Posted in Biology, Planning and Management, Salmon, Tools, Uncategorized | Tagged , | 2 Comments

Reconciling wild things with tamed places – a future for native fish species in the Delta

Peter Moyle, William Bennett, John Durand, William Fleenor, Jay Lund, Jeffrey Mount, University of California – Davis Ellen Hanak, Public Policy Institute of California, San Francisco Brian Gray, University of California – Hastings School of Law Today, the Public Policy … Continue reading

Posted in Biology, Fish, reconciliation, Sacramento-San Joaquin Delta, Stressors | Tagged , , , , , , , , , , , | 1 Comment

When Good Fish Make Bad Decisions

Carson Jeffres, Staff Research Associate, Center for Watershed Sciences Restoration of degraded habitat is generally considered to be a no-brainer.  But, what if by “restoring” the habitat, you inadvertently create a habitat that causes either the target species or other … Continue reading

Posted in Biology, California Water, Conservation, Fish, Restoration | Tagged , , , , , , , , ,

Wanted: An integrated strategy for recovery of Central Valley salmon

Jacob Katz, Ph.D. Candidate, Center for Watershed Sciences Peter Moyle, Professor of Fish Biology, University of California – Davis Historically, the rivers of the Central Valley had seasonally variable stream flows and diverse habitats.  Rivers tended to flood in winter, … Continue reading

Posted in Biology, Conservation, Dam Removal, Fish, Restoration, Sacramento-San Joaquin Delta, Sustainability | Tagged , , , , , , , , , | 2 Comments