Spruce Beetles in Blowdown
Author : J. M. Schmid
Publisher :
Page : 6 pages
File Size : 49,58 MB
Release : 1981
Category : Engelmann spruce beetle
ISBN :
Author : J. M. Schmid
Publisher :
Page : 6 pages
File Size : 49,58 MB
Release : 1981
Category : Engelmann spruce beetle
ISBN :
Author :
Publisher :
Page : 4 pages
File Size : 39,84 MB
Release : 2000
Category : Bark beetles
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Author :
Publisher :
Page : 358 pages
File Size : 39,46 MB
Release : 1996
Category : Forest insects
ISBN :
Author :
Publisher :
Page : 318 pages
File Size : 16,19 MB
Release : 2002
Category :
ISBN :
Author :
Publisher :
Page : 282 pages
File Size : 34,6 MB
Release : 2001
Category :
ISBN :
Author :
Publisher :
Page : 460 pages
File Size : 10,53 MB
Release : 1972
Category : Forest insects
ISBN :
Author : Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher :
Page : 426 pages
File Size : 20,18 MB
Release : 1977
Category : Forests and forestry
ISBN :
Author : Gregory K. Dillon
Publisher :
Page : 85 pages
File Size : 50,43 MB
Release : 2005
Category : Forest management
ISBN :
An approach for synthesizing the results of ecological research pertinent to land management is the analysis of the historic range of variability (HRV) for key ecosystem variables that are affected by management activities. This report provides an HRV analysis for the upland vegetation of the Medicine Bow National Forest in southeastern Wyoming. The variables include live tree density, dead tree (snag) density, canopy cover, abundance of coarse woody debris, species diversity, fire return intervals, the abundance of various diseases, the proportion of the landscape in different land cover types, and the degree of patchiness in the landscape. The variables were examined at the stand and landscape scales, using information available in the literature and USFS databases. High-elevation landscapes were considered separately from low-elevation landscapes. Much of the report pertains to forests dominated by lodgepole pine, subalpine fir, and Engelmann spruce at high elevations, and by ponderosa pine and aspen at lower elevations. We defined the HRV reference period for the MBNF as approximately 1600 to 1860.
Author :
Publisher :
Page : 138 pages
File Size : 29,36 MB
Release : 1998
Category :
ISBN :
Author : United States. Forest Service
Publisher :
Page : 654 pages
File Size : 11,33 MB
Release :
Category : Forest insects
ISBN :