About 605 results
Open links in new tab
  1. Cottonwood and Balsam Poplar | Geophysical Institute

    3 days ago · 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.

  2. Tropical Fossils in Alaska | Geophysical Institute

    Jun 26, 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. …

  3. Tree line changes on the Kenai Peninsula - Geophysical Institute

    Feb 6, 2008 · Tree line didn’t change much on south-facing slopes, but trees and bushes got denser there. Katrina Timm and Alissa McMahon compared photos of the western Kenai hills …

  4. More on Why Tree Trunks Spiral | Geophysical Institute

    3 days ago · 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 …

  5. 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.

  6. 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 …

  7. Tamarack -- Not A Dead Spruce | Geophysical Institute

    Jun 26, 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 …

  8. 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.

  9. Witches' Broom | Geophysical Institute

    Jun 12, 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 …

  10. The Kodiak Treeline | Geophysical Institute

    Jun 26, 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.