Photo Tour: Doing Canopy Science

Our scientific exploration of tall forests is made possible by rope techniques used to access tree crowns. Here is a brief description of these techniques and illustrations of their applications in tall-tree research at Humboldt State University.

Other Photo Tours

Redwood, Sequoia sempervirens »

These five photo tours detail the world's tallest tree species, coast redwood (Sequoia sempervirens), the crown structure of redwood trees, views from old-growth forest canopies, and the unique plants and animals that live hundreds of feet above the ground.

Giant Sequoia, Sequoiadendron giganteum »

This photo tour explores my work with Sequoiadendron giganteum, the giant sequoia. This species is confined to California's Sierra Nevada, where they reach sizes greater than the biggest living coast redwoods and ages up to 3200 years.

Douglas-fir, Pseudotsuga menziesii »

Before logging took its toll on the Douglas-fir forests of British Columbia, Washington, and Oregon, specimens over 400 feet tall were measured. Today the highest concentration of Douglas-firs over 300 feet tall reside in northwestern California amidst the redwoods, as shown in this photo tour.

Sitka spruce, Picea sitchensis »

Targeted by loggers for its wood, whose strength to weight ratio is among the highest on Earth, very little old-growth Sitka spruce forest remains. As with Douglas-fir, the highest concentration of Sitka spruce over 300 feet now resides in northwestern California amidst the redwoods.

Eucalyptus regnans »

Eucalyptus regnans is the undisputed tallest flowering plant in the world. There are, for instance, many well-publicized claims of several trees over 400 feet that were either logged or burned in the 19th and 20th centuries. Today the tallest living individual is a 327-foot-tall Tasmanian tree. This photo tour takes you into Australia's tallest forests.