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- Cottonwood and Balsam Poplar | Geophysical Institute
Balsam poplar is the most widespread broadleaf tree in Alaska; it ranges even farther north and west than another close relative, the quaking aspen Close up, it is easy to distinguish between balsam poplar and quaking aspen from the leaves and, to a lesser extent, by the branching structure
- 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
- Beavers slapping tails on far-north waters | Geophysical Institute
Signs of the American beaver in Alaska: A cut poplar tree on the upper Tanana River and a dam on Phelan Creek near Isabel Pass in the Alaska Range Ned Rozell photos
- The American robin returns on time | Geophysical Institute
American robins have returned to northern Alaska A male is now perched above me in a balsam poplar tree on this bench of well-drained land upon which sits the University of Alaska Fairbanks campus The robin sings his complex, familiar song just hours after his return from somewhere farther south
- Southcentral Alaska: a Natural Experiment in Plant Succession
Ager believes they were balsam poplar, a tree often called cottonwood in the Interior About 9,100 years ago, white and black spruce trees made it to Southcentral Ager said the winged seeds of both tree species probably blew down through mountain passes from the unglaciated Interior
- Visit to an exotic tree plantation in Alaska | Geophysical Institute
The 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
- Pollen season arrives, blame the trees | Geophysical Institute
The first step in a tree's reproductive dance is to release sperm, safely held in the center of a pollen grain Trees release an incredible amount of pollen to improve the odds of finding a female flower One birch catkin (the cluster of tiny flowers that looks like a caterpillar) can release millions of pollen grains
- Leaves | Geophysical Institute
Obviously there is a greater chance of wide variation in the leaves growing from those trees and shrubs such as poplar and highbush cranberry that have indeterminate shoot growth Also, if one wishes to identify the variety of a tree by its leaves, one should be sure to gather leaves from the old growth
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