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

Giving you access to more than 45,000 online USDA Forest Service Research publications.

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In The News
Recent News Releases

What's new
Large trees line a neighborhood street.

A new report from Pacific Southwest Research Station estimates trees lining Californian streets and boulevards provide benefits to municipalities and residents worth $1 billion.

Cover image of the 2015 Accomplishments Report.

Learn about PSW's research programs, research highlights from 2015 and other activities and goals for the station in our 2015 Accomplishments Report.

Downed trees and woody debris among green vegetation. A small stream is in view.

Since 2010, an estimated 40 million trees have died in California. Visit the California Tree Mortality website to learn about the Forest Service's response and National Forest visitor safety.

Cover image of the 2015 Accomplishments Report.

Learn about PSW's research programs, research highlights from 2015 and other activities and goals for the station in our 2015 Accomplishments Report.

A YouTube screenshot on how to detect a tree infected with Ohia wilt.

Our researchers are working with the University of Hawaii and other partners to spread awareness on Rapid Ohia Death. Visit the Hawaii Forestry Extension website to learn about the disease.

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 primary work occurs in California (the most populous state with the eighth-largest economy in the world) and Hawaii (a strategic location in the Pacific Rim economies and tourism).

Our mission is to develop and communicate science needed to sustain forest ecosystems and their benefits to society.

[image-text]: Featured Science
Air Quality: Major research initiatives and emerging research
Devil’s Slide Hiking Trail.
From Sequoia National Park, photochemical smog is visible over the San Joaquin Valley. (National Park Service)

Visit our Air Quality topic for new updates focusing on major air quality research initiatives and emerging research. Understanding impacts of air quality is critical, because air pollution affects climate change and has important effects on health of forests and people.

Learn about the pollutants that have the greatest effect on forest growth and health as well as the various monitoring techniques used by scientists to study these pollutants. Research detailed on the site explains what critical loads are and how it's important to establish and monitor them to help avoid long-term harmful effects on an ecosystem.

Using a network of forest health monitoring plots, researchers are learning about the interactive effects of air pollution and climate change on forest ecosystems. In collaboration with environmental chemists, hydrologists, ecophysiologists, lichenologists, and forest inventory analysts, we investigate and explain complex changes in forest environments.

[image-text]: Recent Publications
Cover image psw-gtr-249
Water Temperature, Dissolved Oxygen, Flow, and Shade Measurements in the Three Stream Sections of the Golden Trout Wilderness

This six-year study provides an understanding of the interactive effects of climate warming and livestock grazing on water temperature in the streams inhabited by California golden trout.

Cover image psw-gtr-251
Proceedings of the seventh California oak symposium: managing oak woodlands in a dynamic world

California’s oak woodlands cover 10 percent of the state and are a key ecological component of conifer forests. Oak woodlands are the most biologically diverse broad habitat in the state, making conservation of their ecosystem values a management priority.

Cover image psw-gtr-249
Risk and Pathway Assessment for the Introduction of Exotic Insects and Pathogens That Could Affect Hawai'i's Native Forests (GTR-PSW-250)

The unmitigated risk potential of the introduction of exotic insects and pathogens to Hawai'i was evaluated for its impact on native plants. Assessments estimate the likelihood and consequences of introduction of representative insects and pathogens of concern.

Last Modified: Jun 17, 2016 02:08:05 PM