study redwoods

Nisene Marks State Park

How human encroachment changes the forest’s edge

on

The wildland-urban interface, or WUI, is the zone where a forest meets land that has been altered or developed by people. Scientists have learned that “edge effects” can occur at these boundaries. A subdivision or logging operation at the WUI, …

Crown‐mapping involves measurements of heights, diameters, distances, and azimuths of all branches. Here Jim Spickler (left) extends a steel tape to measure the horizontal extension of a dead branch while Bob Van Pelt (right) records the measurement. Photo by Stephen Sillett, Institute for Redwood Ecology, Humboldt State University

Countdown to BioBlitz!

on

In 21 days we will have a major scientific event happening throughout the Bay Area: the 2014 National Park Service BioBlitz. Here at the League we are busy preparing for this 24-hour exploration of the ecologically diverse areas of the …

Deliberate burning as a restoration tool. Images by Leonel Arguello, National Park Service

Burning as a Restoration Tool

on

Last week, the sky around the Bald Hills area of Redwood National Park was hazy beyond the normal shroud of fog.  Smoke filled the air.  The forest was burning.  Water trucks stood at the ready, fire crews and park staff …

RCCI scientist, Stephen C. Sillett, on a branch. Photo by Marie Antoine

A Strong Foundation for Redwoods and Climate Change

on

I am delighted to announce that the League has received a grant from the San Francisco Foundation to support our Redwoods and Climate Change Initiative (RCCI)! The $100,000, 2-year grant comes from the Foundation’s Evelyn Tilden Mohrhardt Fund, which was …

Researcher Wendy Baxter climbs a fixed rope up into a 86.6m-tall giant sequoia tree at Calaveras Big Trees State Park. Photo by Anthony Ambrose

Barking up the Right Tree

on

It’s summertime and redwood researchers are putting on their climbing gear and ascending  into the leafy crowns of giant sequoias. A slow climb is worth the effort to see how the giants are growing. But why climb hundreds of feet …