Download or read book Post fire Regeneration Dynamics in Whitebark Pine Pinus Albicaulis Forests in Wind River and Absaroka Mountains Wyoming USA written by Jennifer G. Klutsch and published by . This book was released on 2015 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Patterns of Post fire Regeneration of Whitebark Pine in the Greater Yellowstone Area written by Diana F. Tomback and published by . This book was released on 1997 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post fire Regeneration and Survival of Whitebark Pine Pinus Albicaulis written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Post fire Regeneration of Whitebark Pine written by Diana F. Tomback and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post fire Regeneration of Whitebark Pine written by Diana F. Tomback and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Burn Severity and Whitebark Pine Pinus Albicaulis Regeneration in the North Cascades written by Stephanie Annie McDowell and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Regeneration and Survival of Whitebark Pine After the 1988 Yellowstone Fires written by Diana F. Tomback and published by . This book was released on 2011 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Whitebark Pine Communities written by Diana F. Tomback and published by Island Press. This book was released on 2001 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whitebark pine is a dominant feature of western high-mountain regions, offering an important source of food and high-quality habitat for species ranging from Clark's nutcracker to the grizzly bear. But in the northwestern United States and southwestern Canada, much of the whitebark pine is disappearing. Why is a high-mountain species found in places rarely disturbed by humans in trouble? And what can be done about it.Whitebark Pine Communities addresses those questions, explaining how a combination of altered fire regimes and fungal infestation is leading to a rapid decline of this once abundant -- and ecologically vital -- species. Leading experts in the field explain what is known about whitebark pine communities and their ecological value, examine its precarious situation, and present the state of knowledge concerning restoration alternatives. The book. presents an overview of the ecology and status of whitebark pine communities offers a basic understanding of whitebark pine taxonomy, distribution, and ecology, including environmental tolerances, community disturbance processes, regeneration processes, species interactions, and genetic population structure identifies the threats to whitebark pine communities explains the need for management intervention surveys the extent of impact and losses to dateMore importantly, the book clearly shows that the knowledge and management tools are available to restore whitebark pine communities both locally and on a significant scale regionally, and it provides specific information about what actions can and must be taken.Whitebark Pine Communities offers a detailed portrait of the ecology of whitebark pine communities and the current threats to them. It brings together leading experts to provide in-depth information on research needs, management approaches, and restoration activities, and will be essential reading for ecologists, land managers, and anyone concerned with the health of forest ecosystems in the western United States.

Download or read book Management Guide to Ecosystem Restoration Treatments written by Robert E. Keane and published by CreateSpace. This book was released on 2013-01-21 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book General Technical Report INT written by and published by . This book was released on with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Seed Source Health on Whitebark Pine Pinus Albicaulis Regeneration Density After Wildfire written by Signe B. Leirfallom and published by . This book was released on 2015 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whitebark pine (Pinus albicaulis Engelm.) populations are declining nearly rangewide from a combination of factors, including mountain pine beetle (Dendroctonus ponderosae Hopkins, 1902) outbreaks, the exotic pathogen Cronartium ribicola J.C. Fisch. 1872, which causes the disease white pine blister rust, and successional replacement due to historical fire exclusion practices. With high mortality in cone-bearing whitebark pine, seed production may not be sufficient to support natural regeneration after disturbance such as wildfire. Our objective was to examine the relationship between whitebark pine seed source health and whitebark pine regeneration density in adjacent burns. We sampled regeneration and seed source health in 15 burns within six national forests and three Wilderness Areas in Montana, ranging from 5 to 23 years old. We found a significant, positive relationship between seed source health and seedling density in adjacent burns. Natural regeneration was sparse when the proportion of damaged or dead whitebark pine in the seed source exceeded 50%. Factors that influenced the presence of whitebark pine regeneration within a burn included both vegetation cover and potential solar radiation. Sites closer to seed sources had higher probabilities of seedling occurrence, but seedlings were present throughout most burns. Our results suggest that managers can prioritize restoration plantings of whitebark pine seedlings after wildfire based on the health status of the nearest seed sources.

Download or read book Snowmelt Patterns as Predictors of Post fire Whitebark Pine Regeneration Densities on Mt Washburn Yellowstone National Park written by Phillip E. Farnes and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In April 2002, a personnel services contract was initiated between Yellowstone National Park (Tom Olliff, Chief, Branch of Natural Resources) and Snowcap Hydrology to obtain necessary snow measurements to develop snowmelt patterns on permanent plots established on Mount Washburn after the 1988 fires. Information was to be provided to Dr. Diana Tomback to use in her study on the STATUS OF WHITEBARK PINE REGENERATION IN THE GREATER YELLOWSTONE AREA FOLLOWING THE 1988 FIRES: BURNED VS. UNBURNED FORESTS AND MESIC VS ZERIC CONDITIONS; ASSESSMENT OF BLISTER RUST INFECTION IN SEEDLINGS. This project was permitted under number YELL-2002-SCI-0205. Additional investigators on this project were Dr. Anna Schoettle, USFS Fort Collins, Colorado and Phil Farnes, Snowcap Hydrology, Bozeman, Montana. The results of 2002 were reported in SNOWMELT PATTERNS AS PREDICTORS OF POST-FIRE WHITEBARK PINE REGENERATION DENSITIES ON MOUNT WASHBURN, YELLOWSTONE NATIONAL PARK, Snowmelt on Whitebark Pine Plots, Spring 2002 dated July 2002. --Excerpt from introduction.

Download or read book Whitebark Pine Regeneration After Fire written by Diana F. Tomback and published by . This book was released on 2004 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Symposium on Whitebark Pine Ecosystems written by and published by . This book was released on 1990 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecophysiological Responses of Post fire Whitebark Pine Seedling Restoration written by Judy L. Perkins and published by . This book was released on 2004 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Delayed Seed Germination in Whitebark Pine and Regeneration Patterns Following the Yellowstone Fires written by Diana F. Tomback and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whitebark pine (Pinus albicaulis) seeds are dispersed by Clark's Nutcracker (Nucifraga columbiana), a bird that makes caches under 2-3 cm of soil. Cached seeds may delay germination for one or more years in part because of underdeveloped embryos at the time of seed dispersal. Consequently, whitebark pine may show a soil seed bank strategy that is unique among pines (Pinaceae, Pinus). From 1990 to 1995 we studied natural whitebark pine regeneration following the 1988 Yellowstone fires to determine: (1) whether whitebark pine typically exhibits delayed seed germination and, if so, (2) how this affects patterns of regeneration over time, and (3) whether germination is the result of seed maturation or is stimulated by high levels of moisture availability. We established 275 permanent plots, each 20 m2 in area, divided between Henderson Mountain, Gallatin National Forest, Montana, and Mt. Washburn, Yellowstone National Park. In the Henderson Mountain study area, the ecological conditions or "treatments'' included: dry, burned; moist, burned; dry, unburned; and moist, unburned. In the Mt. Washburn study area, the ecological treatments were dry, burned; moist, burned; and moist, moderately burned. Synchronous delayed seed germination occurred throughout both study areas. The greatest densities of new seedlings appeared in the summers of 1991 and 1993, but the greatest cone crops were produced in 1989 and 1991. Most germination followed two winters of seed dormancy. Regeneration densities were consistently highest on the Mt. Washburn moist treatments. High correlation between weighted means for new regeneration and March-plus-April precipitation, as well as the results of residual and multiple regression analyses, suggests that cone production two years prior and March-plus-April precipitation together account for the regeneration patterns in the Mt. Washburn study area. The role of precipitation requires a further study.

Download or read book Proceedings written by and published by . This book was released on 1984 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: