Vegetation Response To Prescribed Fire In The Kenai Mountains Alaska
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Vegetation Response To Prescribed Fire In The Kenai Mountains Alaska
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Author : Tina V. Boucher
language : en
Publisher:
Release Date : 2003
Vegetation Response To Prescribed Fire In The Kenai Mountains Alaska written by Tina V. Boucher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Plant communities categories.
Between 1977 and 1997, 4000 ha were burned to promote regeneration of tree and shrub species used for browse by moose (Alces alces) in the Kenai Mountains. Species composition was documented along burned and unburned transects at 17 prescribed burn sites. Relationships among initial vegetation composition, physical site characteristics, browse species abundance, and competitive herbaceous vegetation were examined to determine controls on browse species regeneration after prescribed burning. Browse species abundance after burning was inversely related to Calamagrostis canadensis Michx. Beauv. (bluejoint reedgrass) abundance prior to burning. Calamagrostis canadensis abundance was related to specific landscape characteristics. Depositional slopes, such as fluvial valley bottoms and toe slopes, often featured soils with deep, loamy surface horizons. Sites with these characteristics generally showed large increases in C. canadensis cover after prescribed burning, even when C. canadensis was a low percentage (3 percent) of the canopy cover prior to burning. The most important preburn variables for predicting postburn browse species abundance were preburn C. canadensis cover and the type of surficial deposit. Site conditions that are favorable to C. canadensis may be problematic for successful regeneration of browse species, especially if browse species are not present in the initial composition.
Vegetation Response To Prescribed Fire In The Kenai Mountains Alaska
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Author : Tina V. Boucher
language : en
Publisher:
Release Date : 2001
Vegetation Response To Prescribed Fire In The Kenai Mountains Alaska written by Tina V. Boucher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Prescribed burning categories.
The Chugach National Forest has been using prescribed fire as a wildlife habitat management tool since l977. Between 1977 and 1997 about 4,000 hectares have been burned on the Kenai Peninsula to promote regeneration of woody plant species used by moose (Alces alces). Browse species include paper birch (Betula papyrifera), cottonwood (Populus balsamifera subsp. balsamifera and Populus balsamifera subsp. trichocarpa), aspen (Populus tremuloides), Scouler willow (Salix scouleriana), Barclay willow (Salix barclayi) and other tall shrub willows (Salix spp.). The purpose of this study was to evaluate the results of 20 years of prescribed fire in order to assess vegetation response to burning and provide managers with information on future prescribed burn planning. This analysis evaluated relationships among initial vegetation composition, physical site characteristics, browse species abundance, competitive herbaceous vegetation, and fire severity. With few exceptions, browse species increased in abundance after burning where they were present in the initial composition (measurements were made 15 to 20 years post-burn). Early successional grasses and forbs such as Epilobium angustfolium and Calamagrostis canadensis also tended to increase. Late successional species and forest associated species tended to decrease; these species include conifer seedlings, saplings, and trees (Tsuga mertensiana and Picea x lutzii), Rubus pedatus, Linnaea borealis, Drypoteris dilatata, and Menziesia ferruginea. Dwarf shrubs such as Vaccinium uliginosum, V. vitis-idaea, and Empetrum nigrum tended to decrease. Browse species abundance was inversely related to C. canadensis abundance. C. canadensis abundance increases with increasing depth of loamy mineral soil and increasing moisture (but C. canadensis does not occur abundantly on boggy sites with organic soils). Soils with deep loamy surface horizons tend to occur on depositional slopes such as fluvial valley bottoms and toe slopes. Sites with these features generally show large increases in C. canadensis cover after prescribed burning, even when C. canadensis cover is low (3%) prior to burning. The most important pre-burn variables for predicting post-burn browse species abundance are pre-burn C. canadensis cover and type of surficial deposit. Site conditions that are favorable to C. canadensis may be problematic for successful regeneration of browse species, especially if browse species are not present in the initial composition.
Wildland Fire In Ecosystems
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Author :
language : en
Publisher: Forest Service
Release Date : 2008
Wildland Fire In Ecosystems written by and has been published by Forest Service this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Nature categories.
This state-of-knowledge review of information on relationships between wildland fire and nonnative invasive plants can assist fire managers and other land managers concerned with prevention, detection, and eradication or control of nonnative invasive plants. The 16 chapters in this volume synthesize ecological and botanical principles regarding relationships between wildland fire and nonnative invasive plants, identify the nonnative invasive species currently of greatest concern in major bioregions of the United States, and describe emerging fire-invasive issues in each bioregion and throughout the nation. This volume can help increase understanding of plant invasions and fire and can be used in fire management and ecosystem-based management planning. The volume's first part summarizes fundamental concepts regarding fire effects on invasions by nonnative plants, effects of plant invasions on fuels and fire regimes, and use of fire to control plant invasions. The second part identifies the nonnative invasive species of greatest concern and synthesizes information on the three topics covered in part one for nonnative invasives in seven major bioregions of the United States: Northeast, Southeast, Central, Interior West, Southwest Coastal, Northwest Coastal (including Alaska), and Hawaiian Islands. The third part analyzes knowledge gaps regarding fire and nonnative invasive plants, synthesizes information on management questions (nonfire fuel treatments, postfire rehabilitation, and postfire monitoring), summarizes key concepts described throughout the volume, and discusses urgent management issues and research questions.
Research Paper Pnw
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Author :
language : en
Publisher:
Release Date : 1978
Research Paper Pnw written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Forests and forestry categories.
Canadian Journal Of Forest Research
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Author :
language : en
Publisher:
Release Date : 2008
Canadian Journal Of Forest Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Forest genetics categories.
Ecological Effects Of Forest Fires In The Interior Of Alaska
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Author : Harold John Lutz
language : en
Publisher:
Release Date : 1956
Ecological Effects Of Forest Fires In The Interior Of Alaska written by Harold John Lutz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Botany categories.
Fire In The Northern Environment A Symposium
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Author : Alaska Forest Fire Council
language : en
Publisher: Portland, Or : Pacific Northwest Forest and Range Experiment Station
Release Date : 1971
Fire In The Northern Environment A Symposium written by Alaska Forest Fire Council and has been published by Portland, Or : Pacific Northwest Forest and Range Experiment Station this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Fire ecology categories.
The Response Of Herbaceaous Vegetation To Prescribed Burning
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Author : Charles T. Cushwa
language : en
Publisher:
Release Date : 1966
The Response Of Herbaceaous Vegetation To Prescribed Burning written by Charles T. Cushwa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Yellowstone In The Afterglow
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Author : Mary Ann Franke
language : en
Publisher:
Release Date : 2000
Yellowstone In The Afterglow written by Mary Ann Franke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Fire ecology categories.
The Response Of Herbaceous Vegetation To Prescribed Burning
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Author : Charles T. Cushwa
language : en
Publisher:
Release Date : 1966
The Response Of Herbaceous Vegetation To Prescribed Burning written by Charles T. Cushwa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Prescribed burning categories.