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Description: |
ii, 48 pages illustrations, folded maps 24 cm |
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General Note: |
At head of title: United States Dept. of the Interior ... Fish and Wildlife Service ... |
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Contents: List of tundra plants. |
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Contents: Method of study. |
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Contents: Types of tundra vegetation. |
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Contents: Summary and Conclusions. |
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Summary, Etc. Note: |
Abstract: The Alaska tundra varies in width from a few miles to 200 miles along the Bering Sea and from 100 to 150 miles along the Arctic coast. Plant composition is largely lichens, grasses, sedges, alpines, and shrubs, of which 16 distinct vegetative types are described in this report. |
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Abstract: Studies were initiated in 1920 to work out the principal range and range requirements of the reindeer. Subsequent disturbance by grazing and fire, accompanied by climatic changes, has resulted in general confusion in plant mixture and occupation. Recovery of lichen range, injured by grazing or fire, may require from 20 to 40 years for restoration to original density and height. Reestablishment of vascular plants is rapid. Moderate grazing by open herding and rotational use will permit sustained utilization of undamaged tundra. |
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Action Note: |
will digitize 20110115 Queued for digitization January 15, 2011 pda miu |