copy and paste this google map to your website or blog!
Press copy button and paste into your blog or website.
(Please switch to 'HTML' mode when posting into your blog. Examples: WordPress Example, Blogger Example)
Northern Tree Habitats - Geophysical Institute Interior 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
Cottonwood and Balsam Poplar | Geophysical Institute 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
Tree Rings and History | Geophysical Institute A 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
More on Why Tree Trunks Spiral | Geophysical Institute I 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
Burls - Geophysical Institute Burls, spherical woody growths on the trunks of spruce, birch and other trees, are commonly found throughout wooded parts of Alaska
Tropical Fossils in Alaska - Geophysical Institute In contrast, the equatorial and tropical rain forests may contain as many as 3000 different species in an area no larger than one square mile Trees of the rain forest tend to have smooth bark, broad evergreen leaves and heavily buttressed roots--all suitable characteristics for a climate where water and sunshine are plentiful all year round
The secret life of red squirrels | Geophysical Institute 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 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
Orange trees in the Alaska Range | Geophysical Institute It was a tree disease known as spruce needle rust, which infects only the current year’s needles of white, black and Sitka spruce trees The orange powder is composed of millions of tiny spores, which the rust fungus uses to reproduce
The Kodiak Treeline | Geophysical Institute 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 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
Witches Broom | Geophysical Institute 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 pustules appear on the new needles of the broom A strong sweet odor, which is easily recognizable, usually accompanies the maturation of these pustules