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Report

A Path Forward for California’s Freshwater Ecosystems

By Jeffrey Mount, Brian Gray, Karrigan Bork, James Cloern ...

California’s freshwater ecosystems are under pressure and its aquatic biodiversity is in decline. The state needs a new approach to protect the many beneficial uses these ecosystems provide. This report describes a way to manage the state’s freshwater ecosystems—called “ecosystem-based management”—that can improve conditions for native biodiversity and human uses, and increase resilience to climate change.

Report

Aquatic Ecosystem Stressors in the Sacramento-San Joaquin Delta

By Ellen Hanak, Jay Lund, William Fleenor, Jeffrey Mount ...

This report looks at five broad categories of stressors on the Delta’s native fishes, examining causes of stress, allocations of responsibility, and options for management.

This research was supported with funding from the S. D. Bechtel, Jr. Foundation.

Several companion reports contain related findings:

Costs of Ecosystem Management Actions for the Sacramento–San Joaquin Delta (Medellín-Azuara et al. 2013) assesses costs of water management actions.

Integrated Management of Delta Stressors: Institutional and Legal Options (Gray et al. 2013) lays out proposals for institutional reform of science, management, and regulation.

Scientist and Stakeholder Views on the Delta Ecosystem (Hanak et al. 2013) presents detailed results of the two surveys conducted by the report’s authors.

Stress Relief: Prescriptions for a Healthier Delta Ecosystem (Hanak et al. 2013) summarizes the overall research project and the recommendations it generated.

Where the Wild Things Aren’t: Making the Delta a Better Place for Native Species (Moyle et al. 2012) outlines a realistic long-term vision for achieving a healthier ecosystem.

blog post

Managing Freshwater Ecosystems in a Pandemic

By Jeffrey Mount

Efforts to maintain the health of California’s freshwater ecosystems have been disrupted by the COVID-19 pandemic. Yet maintaining momentum on this work is key to reducing the impact of a hotter, drier climate.

blog post

Video: Improving the Health of California’s Freshwater Ecosystems

By Lori Pottinger, Ashlyn Perri

California’s freshwater ecosystems are in poor health, and the current approach for managing them is not working. Jeff Mount, senior fellow at the PPIC Water Policy Center, describes a path for improving their condition to protect the benefits they bring.

blog post

Video: Making the Most of Water for the Environment

By Lori Pottinger

Ted Grantham—the first PPIC CalTrout Ecosystem Fellow and a cooperative extension specialist at UC Berkeley—and a panel of experts discuss a new approach to river management that would restore seasonal components of river flow to sustain ecosystem health.

blog post

Safeguarding the Future of California’s Freshwater Ecosystems

By Sarah Bardeen

Climate change is transforming California’s ecosystems, threatening vital habitat for many native species. Some species may be lost, which is why former Department of Water Resources lead scientist Ted Sommer and environmental law expert Jennifer Harder are joining forces as our 2023–24 PPIC CalTrout ecosystem fellows. We recently asked them to tell us more about their new project, which could help protect wildlife as the climate changes.

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