USDA Forest Service

Pacific Southwest Research Station

Pacific Southwest
Research Station

800 Buchanan Street
Albany, CA 94710-0011
(510) 883-8830
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.
[image:] TreeSearch, links to

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Photo of Connie Millar.

PSW research scientist Dr. Constance "Connie" Millar has been elected as a fellow of the American Association for the Advancement of Science.

A mangrove forest in the nation of Palau. U.S. Forest Service photo.

A recent USDA Blog post highlights efforts by Pacific Southwest Research Station's Institute of Pacific Islands Forestry to study, restore and preserve mangrove forests.

A high variability thin unit in the summer of 2020 – eight years after thinning and six years after prescribed burning.

A recent Pacific Southwest Research Station (PSW) study addresses the benefits of a high variability thinning method to mitigate the risks overstocked forests.

Cover image of the 2019 PSW Science Spotlight.

Pacific Southwest Research Station's 2019 Science Spotlight is now available on our publications page and highlights some of our station's latest research, discoveries and tools.

Valley oak seedlings were planted at the PSW-Institute of Forest Genetics as well as the USFS Chico Seed Orchard. U.S. Forest Service by Jessica Wright.

By identifying genotypes with faster growth rates under warmer temperatures, research presents an approach to mitigate negative consequences of rising temperatures for valley oak.

Science that makes a difference.

The Pacific Southwest Research Station is a world leader in natural resources research through our scientific excellence and responsiveness to the needs of current and future generations.

We represent the research and development branch of the USDA Forest Service in the states of California and Hawaii and the U.S. affiliated Pacific Islands. Our mission is to develop and communicate science needed to sustain forest ecosystems and their benefits to society.

Science Focus: Promote Shared Stewardship

Part 1 of a 5-part animated series offers a broad overview to help viewers begin to undertake urban tree monitoring projects.
Monitoring urban trees

Trees that line city streets and grow in front yards provide beauty, color, shade and a multitude of other benefits to urban areas, but their health and longevity depend heavily on the urban foresters, citizen scientists and volunteers who monitor and take care of them.

Researchers from Pacific Southwest Research Station and Northern Research Station partnered to author two publications and have produced companion videos that serve as guides for monitoring urban trees and helping ensure viability of urban forests over the long run.

Urban tree monitoring: a field guide

Urban tree monitoring: a resource guide

[image-text]: Recent Publications
Cover image psw-gtr-266
Urban Tree Monitoring: A Resource Guide

Guidelines in this report were developed and refined over many years to address the need for standardized urban tree monitoring protocols and provides in-depth guidance for urban forest managers.

Cover image psw-gtr-267
Innovative strategies to reduce the costs of effective wildlife overpasses

Wildlife crossing structures have been one of the most effective means of reducing animal-vehicle collisions. Yet widespread implementation has been hindered by perceived and actual expense.

Cover image psw-gtr-268
Proceedings of the seventh sudden oak death science and management symposium: healthy plants in a world with Phytophthora

Current research concerning sudden oak death caused by the exotic, quarantine pathogen, Phytophthora ramorum.