Nov 27, 2024 · Stan Boutin has climbed more than 5,000 spruce trees in the last 30 years. He has often returned to the forest floor knowing if a ball of twigs and moss within the tree contained …

The trees’ tint was a bit darker than the needles of hemlock and Sitka spruce to which the eye grows accustomed around this Southeast Alaska town. The bottle-brush branches of the pines …

Jun 12, 2024 · A new machine-learning system developed at the University of Alaska Fairbanks can automatically produce detailed maps from satellite data to show locations of likely beetle …

Aug 16, 2010 · The Alaska champion black spruce tree stands on the campus of the University of Alaska Fairbanks. The tree lives in a mixed forest next to large white spruce trees, mature …

Dec 18, 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 …

Jul 23, 2021 · Here, in a forest a few hundred feet above a shrinking glacier, Gaglioti is felling one of the most enigmatic trees in Alaska: an Alaska yellow cedar. These trees, which can live …

Dec 18, 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 …

Dec 18, 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 …

Dec 18, 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 …

Dec 18, 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 …