Forest Health and Mortality of Advance Regeneration Following Canopy Tree Mortality Caused by the Mountain Pine Beetle PDF Download
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Author: Kathy J. Lewis
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 36
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Book Description
"British Columbia is amid the largest recorded mountain pine beetle outbreak in North American history. To minimize timber losses, large-scale salvage operations are underway to utilize the merchantable pine. However, large-scale salvage operations can have negative impacts on a variety of forest values, including the potential to diminish mid-term timber supply opportunities. One option is to reserve stands with adequate advance regeneration for the mid-term timber supply. Another option is to salvage harvest dead trees in a way that protects the advanced regeneration. However, the health, vigour, form, and mortality rate of advance regeneration, through time, has not been well studied. To incorporate these stands into timber supply analyses and subsequent management decisions regarding reservation, mortality and forest health factors must be evaluated. We assessed the forest health of 90 residual stands over a range of stand types with varying lengths of time since attack by mountain pine beetle (MPB). Analysis of the forest health survey data showed that current damage from forest health agents was relatively low. Physical damage was the most common issue, but even in that case, the incidence ranged from
Author: Kathy J. Lewis
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 36
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Book Description
"British Columbia is amid the largest recorded mountain pine beetle outbreak in North American history. To minimize timber losses, large-scale salvage operations are underway to utilize the merchantable pine. However, large-scale salvage operations can have negative impacts on a variety of forest values, including the potential to diminish mid-term timber supply opportunities. One option is to reserve stands with adequate advance regeneration for the mid-term timber supply. Another option is to salvage harvest dead trees in a way that protects the advanced regeneration. However, the health, vigour, form, and mortality rate of advance regeneration, through time, has not been well studied. To incorporate these stands into timber supply analyses and subsequent management decisions regarding reservation, mortality and forest health factors must be evaluated. We assessed the forest health of 90 residual stands over a range of stand types with varying lengths of time since attack by mountain pine beetle (MPB). Analysis of the forest health survey data showed that current damage from forest health agents was relatively low. Physical damage was the most common issue, but even in that case, the incidence ranged from
Author: Kathy J. Lewis
Publisher:
ISBN: 9781100182131
Category : Lodgepole pine
Languages : en
Pages : 26
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Book Description
The overall purpose of this project was to assess the forest health of residual stands over a range of stand types with varying lengths of time since attack by the mountain pine beetle (MPB). Specific objectives were: to determine the existing biotic and abiotic forest health agents that pose significant threats to stand regeneration via advance regeneration under current climatic scenarios; to identify potential biotic and abiotic forest health agents that pose significant threats to stand regeneration via advance regeneration under predicted future climatic scenarios; to quantify mortality of advance regeneration by forest health agent where possible; to determine whether or not the health, vigor, and form of remaining advance regeneration are sufficient to consider the remaining stand stocked without further silvicultural intervention; and to quantify the levels of decay in advance regeneration due to tree-fall scarring.--Document.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 12
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Book Description
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309482887
Category : Science
Languages : en
Pages : 241
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Book Description
The American chestnut, whitebark pine, and several species of ash in the eastern United States are just a few of the North American tree species that have been functionally lost or are in jeopardy of being lost due to outbreaks of pathogens and insect pests. New pressures in this century are putting even more trees at risk. Expanded human mobility and global trade are providing pathways for the introduction of nonnative pests for which native tree species may lack resistance. At the same time, climate change is extending the geographic range of both native and nonnative pest species. Biotechnology has the potential to help mitigate threats to North American forests from insects and pathogens through the introduction of pest-resistant traits to forest trees. However, challenges remain: the genetic mechanisms that underlie trees' resistance to pests are poorly understood; the complexity of tree genomes makes incorporating genetic changes a slow and difficult task; and there is a lack of information on the effects of releasing new genotypes into the environment. Forest Health and Biotechnology examines the potential use of biotechnology for mitigating threats to forest tree health and identifies the ecological, economic, and social implications of deploying biotechnology in forests. This report also develops a research agenda to address knowledge gaps about the application of the technology.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 214
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Book Description
Author: Diana F. Tomback
Publisher: Island Press
ISBN: 9781597263207
Category : Nature
Languages : en
Pages : 462
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Book Description
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.
Author:
Publisher: Academic Press
ISBN: 0128027444
Category : Science
Languages : en
Pages : 332
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Book Description
Pine Bark Beetles, the latest release in the Advances in Insect Physiology series, provides readers with the latest interdisciplinary reviews on the topic. It is an essential reference source for invertebrate physiologists, neurobiologists, entomologists, zoologists, and insect chemists. - Contains important, comprehensive, and in-depth reviews on insect physiology - Provides an essential reference source for invertebrate physiologists and neurobiologists, entomologists, zoologists, and insect biochemists - First published in 1963, this serial is ranked second in the highly competitive ISI category of entomology
Author: Timothy D. Paine
Publisher: Springer
ISBN: 3319247441
Category : Technology & Engineering
Languages : en
Pages : 888
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Book Description
Insect and disease issues are often specific to the Mediterranean forest systems rather than shared with the temperate forests. In addition to the specific native insects and diseases, the forests are subject to the invasion of exotic species. The forests are also at risk from high degrees of human activity, including changing patterns of forest fires, land management activities, intensive plantation forestry using introduced timber species from other Mediterranean climate zones, and atmospheric deposition. Combined with elements of global climate change that may disproportionately affect Mediterranean climate systems, this creates a number of significant management issues that are unique to the Mediterranean forests. It is our goal that the information contained in this volume will contribute to understanding the unique aspects of Mediterranean forest systems and to protecting these critical resources.
Author:
Publisher:
ISBN:
Category : Southern pine beetle
Languages : en
Pages : 284
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Book Description
Author:
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 92
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Book Description
