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Northern Tree Habitats | Geophysical Institute
Jun 12, 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 …
Cottonwood and Balsam Poplar | Geophysical Institute
Jun 12, 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.
More on Why Tree Trunks Spiral | Geophysical Institute
Jun 12, 2025 · Granted, not all trees exhibit the same twist, but the majority of them do. The phenomenon can be likened to the claim that water will always spiral out of a drain in a …
Burls - Geophysical Institute
May 22, 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 …
Tropical Fossils in Alaska | Geophysical Institute
Jun 12, 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. …
The largest black spruce in Alaska | Geophysical Institute
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 …
Feltleaf willows: Alaska’s most abundant tree | Geophysical Institute
May 25, 2023 · The range of the feltleaf willow, probably the most numerous tree in Alaska. From Alaska Trees and Shrubs by Les Viereck and Elbert L. Little, Jr.
Tamarack -- Not A Dead Spruce | Geophysical Institute
Jun 12, 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 …
Orange trees in the Alaska Range | Geophysical Institute
Sep 3, 2020 · While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell.
The Kodiak Treeline | Geophysical Institute
Jun 12, 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.