
Northern Tree Habitats - Geophysical Institute
Apr 10, 2025 · However, after seven growing seasons in Fairbanks, trees from the most northern homelands of the Dezadeash, Carmacks and Mayo areas of the Yukon are among the tallest, and the early starters from the south are now ranked at the bottom; although some of the trees from the Ft. Nelson area of British Columbia have maintained their relatively fast ...
Tropical Fossils in Alaska - Geophysical Institute
Apr 10, 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. These include several kinds of palms, Burmese lacquer trees, mangroves and trees of the type that now produce nutmeg and Macassar oil.
Trees for a Cold Climate - Geophysical Institute
Apr 1, 1993 · Thus, any typical Interior winter would kill trees that rely on antifreeze alone to survive deep cold. The hardiest trees rely on physics more than on chemistry to make it through the winter. When the seasonal chill begins to reach black or white spruce, for example, the sap leaves their living cells and flows into intercellular spaces.
Mummified forest tells tale of a changing north
Jan 6, 2011 · The mummy trees of northern Ellesmere Island include a trunk of a pine tree four feet long and six inches in diameter. Each of the trees was at least 75 years old when it died. The ancient forest holds samples of the last real trees in the area before it became too cold and dry to support large plants, Barker said.
Trees as Earthquake Fault Indicators - Geophysical Institute
Apr 3, 2025 · Trees along faults often are killed by drowning because the faults tend to collect normal drainage water. In some instances, there are widespread tree kills caused by general subsidence. Killed by sinking caused in the great 1964 Alaskan earthquake, firmly stark forests of dead trees stand guard around the shore of upper Turnagain Arm, near ...
More on Why Tree Trunks Spiral - Geophysical Institute
Apr 3, 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 counter-clockwise direction in the northern hemisphere. It is well known that you can make it spiral out in either direction, if you give it a little shove first.
The majesty and mystery of Alaska yellow cedar
Jul 23, 2021 · These trees, which can live longer than 1,000 years, grow on the rainy coast from the Oregon/California border through British Columbia and as far north as Prince William Sound. The giants have in many areas died in large numbers, puzzling scientists who later came up with a non-intuitive theory of what killed them.
Bark Beetles in Spruce Trees - Geophysical Institute
Mar 13, 2025 · Trees that have been attacked in this manner will have patches of resin flowing down the trunk. Various activities which disturb the environment of spruce contribute to bark beetle attack. These activities include timber harvest, land clearing, and severe winds which cause wind-thrown trees.
Skinny Trees and Paleoforests - Geophysical Institute
Jun 20, 1990 · Creber and Chaloner showed that warmth, not light, limits the growth of ring-forming trees. In June, struggling plants on Cornwallis Island, near 75 degrees north in the Canadian Arctic, receive nearly the same amount of light as thriving trees in the parks of Washington, D.C, near 40 degrees north latitude.
Cottonwood and Balsam Poplar - Geophysical Institute
Apr 10, 2025 · The Klukwan giant holds the national record for black cottonwood diameter. Its nearest rival, a tree near Salem, Oregon, does hold the national height record. 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.