Category Archives: Conservation

California WaterFix and Delta Smelt

by Peter Moyle and James Hobbs The delta smelt is on a trajectory towards extinction in the wild.  Heading into 2017, the spawning adult population was at an all-time low although this past wet winter has apparently seen a small … Continue reading

Posted in California Water, Conservation, Delta, Fish, Planning and Management, Restoration, Sacramento-San Joaquin Delta, Sustainability | Tagged , | 12 Comments

Better Information Can Help the Environment

by Henry McCann and Alvar Escriva-Bou This blog was originally posted on the Public Policy Institute’s Viewpoints blog. We know that California’s aquatic species are at risk from a host of stressors and that drought pushes them closer to the … Continue reading

Posted in California Water, Conservation, Planning and Management, Sustainability | 5 Comments

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 , , , | 6 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

Reconciling conservation and human use in the Delta

By John Durand, Peter Moyle, and Amber Manfree  In a previous blog, we presented a Grand Scheme for habitat conservation in the North Delta Arc (the Arc). This follows up on our earlier broad vision for recreating a Delta more friendly … Continue reading

Posted in Conservation, Delta, reconciliation | Tagged , , | 2 Comments

The Horror of a Salmon’s Wheel of Misfortune

By Miranda Tilcock Salmon in the Stream 10 little salmon eggs, resting in a redd 1 was covered in silt, now the egg is dead 9 little alevin, with their yolks attached, 1 was washed away, and never made it … Continue reading

Posted in Conservation, education, Fish, Floodplains, Salmon, Uncategorized | Tagged , | 5 Comments

Instream flows: Five features of effective summer flow strategies

By Ann Willis As summer begins and stream flows drop throughout California, concerns resurface about whether there’s enough water to support critical ecosystems. Environmental flows have long been a contentious issue, often presented in conflict with existing water use. But … Continue reading

Posted in California Water, Conservation, Planning and Management, reconciliation, Sustainability | Tagged | 2 Comments

Cue the Frogs! Water signatures, environmental cues and climate change

By Ryan Peek, Helen Dahlke, and Sarah Yarnell An organism’s success relies on responding to environmental cues that trigger activities such as breeding, migration, feeding, predator evasion, etc. Responses can be finely tuned to specific cues, or may require multiple … Continue reading

Posted in Conservation, Stressors, Uncategorized | Tagged , , , | 3 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