Multipurpose silviculture in ponderosa pine stands of the Montane Zone of central Colorado /

Myers, Clifford A.

doi:10.5962/bhl.title.99197

Cited by 8 publications

(10 citation statements)

References 6 publications

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“…In the Front Range of Colorado, harvesting done for the purpose of improving tree growth also produces a greater uniformity in density and age structure (Myers 1974;Alexander 1986). The effects of such an approach can be seen on the Black Hills National Forest, where harvesting by industry and firewood cutters has left fewer snags and less downed wood than in unmanaged stands (Lundquist 1995a(Lundquist , 1995b.…”

Section: Timber Harvestmentioning

confidence: 99%

Historic range of variability for upland vegetation in the Medicine Bow National Forest, Wyoming

Dillon¹,

Knight²,

Meyer³

2005

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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.Keywords: aspen, bark beetles, canopy gaps, coarse woody debris, comandra blister rust, dwarf mistletoe, Engelmann spruce, fire effects, disease in Rocky Mountain forests, forest fragmentation, insects in forests, interior forest, landscape ecology, lodgepole pine, mistletoe, mountain pine beetle, ponderosa pine, roads, Rocky Mountain forests, snags, spruce beetle, subalpine fir, subalpine forests, timber harvesting effects, white pine blister rust, wind in forests Executive SummaryThe challenges of sustainable land management have led to an increased emphasis on incorporating the results of science in the decision making process. One approach for accomplishing this objective is through the analysis of the historic range of variability (HRV) for key ecosystem variables that are affected by management activities. The rationale for HRV analyses is that the chances of sustainable forest management are greater if the variation in managed ecosystems includes the range of conditions that are expected at various scales in ecosystems relatively uninfluenced by humans. This report provides an HRV analysis for the upland vegetation of the Medicine Bow National Forest (MBNF).By definition, HRV analyses require the identification of specific variables and an estimation of how those variables fluctuated, at more than one scale, prior to the advent of resource extraction and management by EuropeanAmericans. A complete list of the variables that we examined is found in table 7. Examples 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. We examined variables at two scales-the stand and the landscape-and we separated high-elevation landscapes from low-elevation landscapes. Much of the repo...

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Section: Timber Harvestmentioning

confidence: 99%

Historic range of variability for upland vegetation in the Medicine Bow National Forest, Wyoming

Dillon¹,

Knight²,

Meyer³

2005

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“…Suppression of wildfires has occurred throughout the 20 th century and most wildfires continue to be suppressed in the region. Because of its proximity to the largest cities in Colorado, the forested montane zone has been one of the most heavily used areas in the state for recreation (Myers 1974).…”

Section: Colorado Front Rangementioning

confidence: 99%

“…Fuel treatments can also be used to control outbreaks of insects and diseases. Heavier thinning targets have been justified in areas severely infested by dwarf mistletoe (Heidmann 1968;Myers 1974) and mountain pine beetle (McCambridge and Stevens 1982). Fuel treatments have been used to increase water yield from watersheds.…”

Section: Other Objectivesmentioning

confidence: 99%

A comprehensive guide to fuels treatment practices for ponderosa pine in the Black Hills, Colorado Front Range, and Southwest

Hunter¹,

Shepperd²,

Lentile³

et al. 2007

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“…Successful regeneration following disturbances is critical to the silviculture and management of these forests. Although successful regeneration of these forests may be possible (Myers 1974, Pearson 1950), more information is needed on the effects of environmental factors on natural regeneration.…”

mentioning

confidence: 99%

“…Hayes (1965) also concluded that inadequate moisture is a common obstacle to regeneration east of the Sierra-Cascades. The time needed for germination and subsequent establishment of ponderosa pine seedlings has been observed to vary with precipitation conditions, both in central Colorado (Myers 1974) and in the southwest (Schubert et al 1970).…”

mentioning

confidence: 99%

Effects of watering treatments on germination, survival, growth of ponderosa pine: a greenhouse study

Noble¹,

Edminster²,

Shepperd³

1979

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Multipurpose silviculture in ponderosa pine stands of the Montane Zone of central Colorado /

Cited by 8 publications

References 6 publications

Historic range of variability for upland vegetation in the Medicine Bow National Forest, Wyoming

Historic range of variability for upland vegetation in the Medicine Bow National Forest, Wyoming

A comprehensive guide to fuels treatment practices for ponderosa pine in the Black Hills, Colorado Front Range, and Southwest

Effects of watering treatments on germination, survival, growth of ponderosa pine: a greenhouse study

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