
Northern Tree Habitats - Geophysical Institute
Jun 12, 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, …
Tropical Fossils in Alaska - Geophysical Institute
Jun 12, 2025 · 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 …
Burls - Geophysical Institute
May 22, 2025 · Trees with burls seem to be found in a cluster; if one tree in an area has burls, it is likely that other trees around it has them too. This clumping is suggestive of leafhoppers or …
Cottonwood and Balsam Poplar | Geophysical Institute
Jun 12, 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 …
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 …
Feltleaf willows: Alaska’s most abundant tree
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.
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 …
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. …
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. …
Tamarack -- Not A Dead Spruce - Geophysical Institute
Jun 12, 2025 · Tamarack commonly grows on cold, wet sites and its growth rate and appearance do little to stimulate interest. When one of these trees finds itself on a better site, however, it …