http://www.bing.com:80/search?q=Tree+Background+VectorSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Tree+Background+VectorCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://www.gi.alaska.edu/alaska-science-forum/northern-tree-habitats-0Interior Alaskan forests have only six native tree species: white spruce, black spruce, quaking aspen, balsam poplar, larch (tamarack) and paper birch. Northern Canadian forests have all of those, plus jack pine, balsam fir and lodgepole pine. Since northern Canada and interior Alaska share the same grueling climate and extremes of daylength, why are the Canadian tree species absent from ...Tue, 31 Mar 2026 02:28:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/more-why-tree-trunks-spiralI eventually found a tree with a spiral lightning mark and it followed the spiral grain exactly. One tree, of course, proves nothing. "But why should the tree spiral? More speculation here: Foliage tends to be thicker on the south side of the tree because of better sunlight.Wed, 01 Apr 2026 04:14:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/tree-rings-and-historyA tree's age can be easily determined by counting its growth rings, as any Boy or Girl Scout knows. Annually, the tree adds new layers of wood which thicken during the growing season and thin during the winter. These annual growth rings are easily discernible (and countable) in cross-sections of the tree's trunk. In good growing years, when sunlight and rainfall are plentiful, the growth rings ...Fri, 20 Feb 2026 02:02:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/feltleaf-willows-alaskas-most-abundant-treeThe most plentiful moose food in the state — and probably Alaska’s most numerous tree — is the feltleaf willow, which was once called the Alaska willow. As its name implies, the feltleaf sprouts canoe-shaped green leaves that feel fuzzy on the underside.Tue, 31 Mar 2026 01:16:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/tree-line-changes-kenai-peninsulaThe gradual change in tree line is one of many that people have noticed on the Kenai Peninsula in recent years. The most obvious is the 1980s-to-1990s Spruce bark beetle invasion, during which the insects killed 30 million mature spruce trees on the Kenai and a wide swath of southern Alaska.Mon, 30 Mar 2026 10:28:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/visit-exotic-tree-plantation-alaskaThe two-acre exotic tree plantation is part of a much-larger “boreal arboretum” on the UAF campus, which mostly consists of native spruce, birch, aspen, poplar and willow trees. Having borrowed the key from a researcher with UAF’s Agricultural and Forestry Experiment Station, Woodward has invited me to join him inside the chain-link fence.Tue, 31 Mar 2026 02:49:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/bark-beetles-spruce-treesBark beetles attack spruce trees in early summer. These brownish black beetles are common throughout Alaska and Yukon Territory where they kill trees by boring through the bark and feeding and breeding in the phloem (inner bark)--the thin layer of soft tissue directly beneath the bark. If the beetles girdle the phloem, the tree will die since the phloem is the vital path that transports food ...Sun, 29 Mar 2026 16:27:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/cottonwood-and-balsam-poplarThe 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.Tue, 31 Mar 2026 12:15:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/kodiak-treelineSpruce 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. In recent years, trees have been planted at military bases along the chain, and the State is now shipping out seedlings for reforestation projects all over Alaska.Fri, 27 Mar 2026 02:54:00 GMThttps://www.gi.alaska.edu/alaska-science-forum/secret-life-red-squirrels-0Stan 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 newborn red squirrel pups. Over the years, those squirrels have taught Boutin and his colleagues many things, including an apparent ability to predict the future.Tue, 31 Mar 2026 08:33:00 GMT