Oct 23, 2025 · Paleobotanist Jack A. Wolfe of the United States Geological Survey at Menlo Park, California, has found a number of tropical rain forest fossils along the eastern Gulf of Alaska. …

Oct 23, 2025 · The Klukwan giant belies the belief that trees tend to get smaller the farther north one goes. Both balsam poplar and cottonwood have value for fuel wood, pulp and lumber.

Oct 16, 2025 · Why take a chance with exotics, when native trees have proven their ability to survive? Several reasons prompt testing of foreign tree species. Human activities often create …

Oct 16, 2025 · Burls weaken trees but do not kill them. The weakening effect, however, makes the trees vulnerable to other diseases which can kill them. Relatively little is known about burls, for …

Sep 11, 2014 · From the solution of liquid leaves, they determined that a sugary red pigment was indeed present in red and orange aspens, but not in yellow aspens. The scientists hinted that …

Oct 16, 2025 · Somehow black spruce trees seem like the jackasses of the northern forests--sort of ungainly looking, ugly little beasts that somehow can survive under conditions prohibitive to …

Oct 16, 2025 · When one of these trees finds itself on a better site, however, it shows a remarkable change of pace. Individual tamarack growing in white spruce stands may achieve …

Oct 16, 2025 · A swath of dead, tilted and broken trees now makes obvious the trace of the Fairweather fault that broke in July 1958 to devastate Lituya Bay and nearby parts of …

Oct 23, 2025 · Spruce trees planted on the islands by the Russians in 1805 are doing just fine and reseeding themselves naturally, although the total tree population hardly amounts to a forest.

Oct 9, 2025 · Witches' broom on spruce trees is caused by a rust disease (a kind of fungus disease). The rust lives on the spruce tree throughout the year. Each spring, small yellow …