Pacific Southwest Research Station

From 2006 through 2016, more than 100 million trees died in California due to the combined impacts of drought and bark beetles. Although tree mortality is part of a natural life cycle, at a massive level it can lead to adverse economic and social effects. So many dead and dying trees increase the...

In the cramped environs of U.S. cities every inch counts, especially if attempting to make space for nature. But now city planners and urban foresters have a resource to more precisely select tree species whose growth will be a landscaping dream instead of a maintenance nightmare. The U.S. Forest...

Frank Lake grew up learning traditional practices from the Karuk and Yurok Tribes. He developed an interest in science which led to his career choice as a research ecologist with the U.S. Forest Service’s Pacific Southwest Research Station. As a young man, he didn’t realize how unusual the...

People around the world manipulate ecosystems for their own purposes. It’s what you leave behind when you’re finished working or living in the area that determines whether the ecosystem survives or is irreparably harmed for future generations. For scientists like John Parrotta, national program...

Every year in the U.S. roughly 200 people are killed in as many as 2 million wildlife-vehicle collisions and at a cost of more than $8 billion, according to the Western Transportation Institute. But the U.S. Forest Service’s Pacific Southwest Research Station scientists, along with their...

The U.S. Forest Service is working with The Wildlife Society to give Native American students a chance to work as research assistants for Forest Service scientists. Forest Service Research and Development funding provides stipends for living expenses for college juniors, seniors and graduate...

Following a wildfire, some might see dead trees. Woodpeckers see possibilities. The black-backed woodpecker is one such bird—a burned forest specialist—who readily chooses fire-killed trees (snags) in which to drill cavities for nesting and roosting. When the woodpecker moves on, its cavity turns...

For the foothill yellow-legged frog, breeding can be a challenging matter. It is the only true frog in western North America that breeds exclusively in streams, preferring warm stream edges. Its eggs can be swept away with spring rains and rapid currents, so a relatively long breeding season allows...

Forest managers in the western United States often face difficult choices when it comes to reducing wildfire hazards while also maintaining wildlife habitat in forests that have changed dramatically in the last century. The U.S. Forest Service Pacific Southwest Research Station and partners are...

Coastal wetlands the world over are known for harboring an impressive array of plants and animals. In the Pacific Islands, wetlands not only provide habitat for many unique species, including some threatened and endangered waterbirds, but also support communities of people who rely on these special...