Study of the Alaska Tundra with Reference to its Reactions to Reindeer and other Grazing Page: 30
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30 RESEARCH REPORT 10, FISH AND WILDLIFE SERVICE
tion was completely removed by spading. Two years later this
quadrat again supported a full stand of vegetation. It was com-
posed, however, of 65 percent mosses, 15 percent Equisetum, 15
percent grasses, and 5 percent weeds (Petasites, Viola, and Arte-
misia). During the next 7 years there was, a gradual decrease in
mosses and an increase in the number and quantities of weeds.
Willows became reestablished and increased slowly. Grasses
decreased in the amount of area covered. The final charting
made 9 years after spading revealed a cover density of 0.6, the
vegetation being composed of 65 percent mosses, 8 percent Arcta-
grostis, 9 percent willow and salmonberry, and 18 percent weeds,
including Artemisia, Petasites, Epilobium, Viola, and Polemonium.
Cut quadrat.-The second quadrat in this group was originally
similar to the spaded quadrat, having a full cover of willows and
Arctagrostis. The vegetation was removed by cutting it at the
ground surface and then trampling it. Two years later there
was a full cover of vegetation made up of 85 percent grasses, 8
percent mosses, and 7 percent weeds. The vegetation was again
tt
932515
Figure 12.-The site of the study of the grass-browse type on Nunivak Island.
June 27, 1927.
removed by cutting. The following year the plant cover had
a density of 0.8 and was composed of 38 percent grasses, 50 per-
cent mosses, and 12 percent weeds. During the next 6 years
there was a gradual increase in the number of species and quan-
tities of weeds and browse and a decrease in the mosses. The
last charting recorded a cover of 0.9 density made up of 30 per-
cent grasses, 30 percent weeds, 30 percent mosses, and 10 percent
browse species. Petasites, Equisetum, Coelopleurum, and Arte-
misia were the dominant weeds.
Check quadrat.-The check quadrat was similar in density and
composition to the treated quadrats when established. Subse-
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Palmer, Lawrence J. & Rouse, Charles H. Study of the Alaska Tundra with Reference to its Reactions to Reindeer and other Grazing, report, 1945; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc100536/m1/35/?rotate=270: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.