Post-fire Regeneration Dynamics in Whitebark Pine (Pinus Albicaulis) Forests in Wind River and Absaroka Mountains, Wyoming, USA PDF Download
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Author: Jennifer G. Klutsch
Publisher:
ISBN:
Category : Blister rust
Languages : en
Pages : 15
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Book Description
Whitebark pine (Pinus albicaulis) populations are in decline across the species? range due to historic wildfire exclusion, mountain pine beetle (Dendroctonus ponderosae, MPB) outbreaks, and an invasive fungal pathogen causing the disease white pine blister rust (Cronartium ribicola, WPBR). Despite reliance on stand-replacing fires, information on whitebark pine regeneration occurrence is limited and the trajectory of future forests is largely unknown in some areas of the range. Regeneration densities were assessed in burned and adjacent non-burned areas at six high elevation locations in northwest Wyoming where stand-replacing fires occurred 8?32 years before the surveys. In these locations at the eastern extent of the species range, we assessed what site factors were associated with regeneration success. Whitebark pine regeneration density was greater and seedlings were older in non-burned compared to burned areas. Within burns, north aspects had more regeneration than south aspects. Potential seed source densities and other species? regeneration were positively related to whitebark pine regeneration densities in burned areas. South facing slopes or grass covered areas may have either delayed or no regeneration of whitebark pine without the help of artificial planting.
Author: Jennifer G. Klutsch
Publisher:
ISBN:
Category : Blister rust
Languages : en
Pages : 15
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Book Description
Whitebark pine (Pinus albicaulis) populations are in decline across the species? range due to historic wildfire exclusion, mountain pine beetle (Dendroctonus ponderosae, MPB) outbreaks, and an invasive fungal pathogen causing the disease white pine blister rust (Cronartium ribicola, WPBR). Despite reliance on stand-replacing fires, information on whitebark pine regeneration occurrence is limited and the trajectory of future forests is largely unknown in some areas of the range. Regeneration densities were assessed in burned and adjacent non-burned areas at six high elevation locations in northwest Wyoming where stand-replacing fires occurred 8?32 years before the surveys. In these locations at the eastern extent of the species range, we assessed what site factors were associated with regeneration success. Whitebark pine regeneration density was greater and seedlings were older in non-burned compared to burned areas. Within burns, north aspects had more regeneration than south aspects. Potential seed source densities and other species? regeneration were positively related to whitebark pine regeneration densities in burned areas. South facing slopes or grass covered areas may have either delayed or no regeneration of whitebark pine without the help of artificial planting.
Author: James Morrow
Publisher: transcript Verlag
ISBN: 3839440777
Category : Social Science
Languages : en
Pages : 221
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Book Description
Where the Everyday Begins is a study of environment and everyday life. It uses innovative research methods to bear witness to the ways by which environment defines everyday life. And its lively narrative pulls together a multitude of observations that reveal incredible details about the social and material ecologies that bind the world.
Author: Diana F. Tomback
Publisher:
ISBN:
Category : Lodgepole pine
Languages : en
Pages : 3
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Book Description
Successional whitebark pine (Pinus albicaulis) communities are dependent on fire and other disturbances for renewal (Arno 2001). Where whitebark pine regenerates results from cache site selection by Clark's nutcrackers (Nucifraga columbiana) in relation to the environmental tolerances of seeds and seedlings (Tomback 2001). After the 1988 Yellowstone fires, we studied the development of upper subalpine forest communities with particular focus on the regeneration of whitebark pine in two study areas - Mt. Washburn in Yellowstone National Park, and Henderson Mtn. in Gallatin National Forest. Fire history and patterns of community regeneration of the predominantly seral lodgepole pine forests in the southcentral and southwestern regions of Yellowstone National Park have been well studied (e.g., Romme 1982; Turner and others 1997), whereas whitebark pine communities have been less studied.
Author: James Randall Walsh
Publisher:
ISBN:
Category : Forest fires
Languages : en
Pages : 144
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Book Description
Author: Stephen F. Arno
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 266
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Book Description
In Mimicking Nature's Fire, forest ecologists Stephen Arno and Carl Fiedler present practical solutions to the pervasive problem of deteriorating forest conditions in western North America.
Author: Robert E. Keane
Publisher: CreateSpace
ISBN: 9781482034400
Category : Nature
Languages : en
Pages : 142
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Book Description
Whitebark pine is declining across much of its range in North America because of the combined effects of mountain pine beetle epidemics, fire exclusion policies, and widespread exotic blister rust infections. This management guide summarizes the extensive data collected at whitebark pine treatment sites for three periods: (1) pre-treatment, (2) 1 year post-treatment, and (3) 5 years post-treatment (one site has a 10 year post-treatment measurement). Study results are organized here so that managers can identify possible effects of a treatment at their own site by matching it to the most similar treatment unit in this study, based on vegetation conditions, fire regime, and geographical area. This guide is based on the Restoring Whitebark Pine Ecosystems study, which was initiated in 1993 to investigate the effects of various restoration treatments on tree mortality, regeneration, and vascular plant response on five sites in the northern Rocky Mountains. The objective was to enhance whitebark pine regeneration and cone production using treatments that emulate the native fire regime. Since data summaries are for individual treatment units, there are no analyses of differences across treatment units or across sites.
Author: Michael Peter Murray
Publisher:
ISBN:
Category : Fire ecology
Languages : en
Pages : 242
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The recruitment trends of whitebark pine (Pinus albicaulis Engel.) were investigated in 18 recently burned stands in the Canadian Rockies and the North Cascades. Whitebark pine recruitment in recently burned stands (fires
Author: Stephanie Annie McDowell
Publisher:
ISBN:
Category : Blister rust
Languages : en
Pages : 0
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Book Description
Whitebark pine (Pinus albicaulis, Engelm.) is a long-lived and slow-growing high elevation tree and a key part of subalpine communities in the North Cascades, Washington State. Whitebark pine populations in Washington are declining because of an exotic fungus, white pine blister rust (Cronartium ribicola), and successional replacement due to fire exclusion. An increase in whitebark pine seedling density could help restore populations and accelerate the process of natural selection towards rust resistance. Where whitebark pine is firedependent, fire exclusion has impeded whitebark pine regeneration. The relationship between whitebark pine regeneration and burn severity was studied in the subalpine and timberline ecotone in the North Cascades in 2005. Whitebark pine regeneration data were collected eleven years after two 1994 fires, the Boulder Creek Fire in the North Cascades National Park and in the Tyee Complex Fire in the Wenatchee National Forest. A comprehensive model of the ecological factors related to post-fire whitebark pine seedling presence and density was created showing how whitebark pine regeneration may be related to many characteristics of the environment, pre-fire forest, burn severity, and post-fire condition. Whitebark pine seedling presence and density models were compared using Akaike information criterion. Leading models for explaining variability in seedling presence on the Boulder Creek site included total overstory cover and burn severity factors, where areas with greater canopy cover and moderate burn severity had the greatest probability of seedling presence. At the Tyee Mountain site, the top models for explaining variability in seedling presence were overstory whitebark pine cover, char depth and soil organic matter. The probability of seedling presence increased as char depth increased and soil organic matter decreased. The variability of whitebark pine seedling densities was best explained by the distance to the edge of the burn, with seedling densities increasing with greater distance into the core burn area. Allowing moderate severity fires to burn in large areas may create more opportunities for natural whitebark pine regeneration.
Author: Evan Reed Larson
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
