Mountain pine beetle-caused tree mortality in partially cut plots surrounded by unmanaged stands
By: J.M. Schmid and S.A. Mata.
Contributors: Mata, S. A.; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Series: Research paper RMRS -- RP-54.
Publisher: USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station
Published: 2005
Place of publication: [Fort Collins, Colo.?]
Language: eng
Number of pages: 11
Subjects: Mountain pine beetle -- Black Hills National Forest (S.D. and Wyo.); Ponderosa pine -- Diseases and pests -- Black Hills National Forest (S.D. and Wyo.); Lodgepole pine -- Diseases and pests -- Black Hills National Forest (S.D. and Wyo.)
Description: Mountain pine beetle activity was monitored in one set of 2.5 acre plots in the southern portion of the Black Hills National Forest over a 17-year period. Beetles attacked 77 percent of the trees in the uncut control, 48 percent of the trees in the growing stock level (GSL) 100/110, 53 percent of the trees in the GSL 80/90, and 9 percent of the trees in the GSL 60/70. The percentages of MPB-attacked trees in each 1 in diameter class were lowest in the GSL 60/70, intermediate in the GSL 80/90 and GSL 100/110, and highest in the uncut control. Live basal area was significantly reduced in the GSL 80/90, GSL 100/110, and control but not in the GSL 60/70. Partial cutting to reduce beetle-caused mortality may be ineffective for partially cut parcels of <10 acres if the partially cut stands are surrounded by unmanaged susceptible stands. To increase the effectiveness of partial cutting, stands should be managed on a landscape basis. A 100-ft-wide strip with stand density of ?GSL 70 between unmanaged and managed stands may be sufficient to limit the spread of beetle-caused mortality from unmanaged stands to adjacent partially cut stands.
Notes: Caption title.

"August 2005."

Includes bibliographical references (p. 10-11).

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