Fire and the Persistence and Decline of Montane Chaparral in Mixed Conifer Forests in the Southern Cascades, Lassen Volcanic National Park, CA PDF Download
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Author: Catherine T. Airey
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
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Book Description
Author: Catherine T. Airey
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
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Book Description
Author: Paul R. Miller
Publisher: Springer Science & Business Media
ISBN: 146121436X
Category : Science
Languages : en
Pages : 445
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Book Description
This volume presents a body of research conducted over more than thirty years, including an intensive interdisciplinary five-year study begun in 1991. Chapters include studies of the relationships of biogeography and climate to the region's air pollution, the chemical and physiological mechanisms of ozone injury, as well as the impacts of nitrogen-containing pollutants and natural stresses on polluted forests.
Author: Michael Barbour
Publisher: Univ of California Press
ISBN: 0520249550
Category : Nature
Languages : en
Pages : 732
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Book Description
"This completely new edition of Terrestrial Vegetation of California clearly documents the extraordinary complexity and richness of the plant communities and of the state and the forces that shape them. This volume is a storehouse of information of value to anyone concerned with meeting the challenge of understanding, managing or conserving these unique plant communities under the growing threats of climate change, biological invasions and development."—Harold Mooney, Professor of Environmental Biology, Stanford University "The plants of California are under threat like never before. Traditional pressures of development and invasive species have been joined by a newly-recognized threat: human-caused climate change. It is essential that we thoroughly understand current plant community dynamics in order to have a hope of conserving them. This book represents an important, well-timed advance in knowledge of the vegetation of this diverse state and is an essential resource for professionals, students, and the general public alike."—Brent Mishler, Director of the University & Jepson Herbaria and Professor of Integrative Biology, University of California, Berkeley
Author: Zachary J. Wenderott
Publisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 54
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Book Description
Forests throughout much of the western United States are experiencing increasing climatic variability, often resulting in decreased forest productivity and elevated likelihood of tree mortality. Severe drought, such California’s recent 2012-2015 drought, are projected to increase in intensity, frequency, and severity throughout much of this region in coming years. Forest management has long relied on prescribed fire and mechanical thinning to reduce fuel loads and ameliorate potential fire hazards. These treatments may also have the ability to reduce stand density, alleviate competitive pressures, and allow residual trees access to critical resources during periods of extreme stress. Utilizing a long-term National Park Service fire monitoring program allowed us to analyze the effects of prescribed fire treatments on radial growth response in a mixed-conifer forest of northern California. Tree core samples were collected and analyzed from 136 yellow pine (ponderosa pine (Pinus ponderosa) and Jeffrey pine (Pinus jeffreyi)) and 136 white fir (Abies concolor) trees within Lassen Volcanic National Park. Tree-ring data was used to describe factors that influenced tree growth during the locally identified low moisture period (2007 - 2015), as well the potential ability of treatments to improve tree drought resistance and subsequent recovery. Radial growth was positively associated with crown ratio and annual precipitation totals, and negatively associated with localized competitive pressures. Within treatment sites, where stand density was effectively reduced, trees showed improved annual radial growth rates. This appeared to be generally driven by overall treatment intensity and its ability to alter forest density. White fir exhibited a stronger growth response to competitive pressures compared to yellow pine; however, radial growth rates were generally driven by the same factors. Drought resistance did not appear to be strongly correlated with competitive pressures, though drought recovery was slightly associated with increased competitive levels. Findings suggests future forest management techniques, such as prescribed fire and thinning, may be beneficial in terms of reducing competitive pressures and improving radial tree growth among residual trees during future more severe drought.
Author: Dani Niziolek
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Contemporary fires in California are becoming larger, more frequent, and increasingly severe, and this trend is expected to continue in the coming decades. Increases in area burned and area burned at high severity generate larger high severity patches without a tree canopy, which can impede forest recovery by limiting seed dispersal from live trees and triggering vegetation type change. Although there is an emerging body of research on post-fire conifer regeneration, there is uncertainty in how landscape and local site conditions interact to influence regeneration. This thesis identifies dominant drivers of postfire conifer regeneration in Lassen Volcanic National Park in the southern Cascades. We studied post-fire conifer regeneration in the footprint of nine fires, between 7 and 26 years after the burn, quantifying pre- and post-fire forest condition, topography and topoclimate, and local terrain and ground cover at each plot. Random Forest models assessed the relationship between these environmental conditions and regeneration stocking or species occurrence. We found that post-fire conifer regeneration was relatively abundant in Lassen Volcanic National Park, and abundance was related toto topography, vegetation type, and characteristics of the pre- and post-fire forest. Regeneration was densest in cooler, wetter topographic positions, and although overall regeneration did not respond to post fire water balance, species showed different responses to moisture availability. Regeneration responded positively to proximity to forest edge and longer time since fire, with the strongest regeneration occurring within 200 m of forest edge and >10 years since fire. Though high levels of shrub cover inhibited regeneration, at lower levels shrub cover supported more dense tree regeneration. These findings support trends found in the literature, and highlight the importance of studying regeneration over longer periods after fire, and incorporating characteristics of the local environment in studies of post-fire conifer regeneration.
Author: Thomas Capnor Brown
Publisher:
ISBN:
Category : Chaparral
Languages : en
Pages : 484
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Book Description
Author:
Publisher:
ISBN:
Category : Chaparral
Languages : en
Pages : 244
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Book Description
Author: Richard W. Halsey
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 220
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Book Description
Biologist and fire ecologist Richard W. Halsey, with contributions from many other experts, weaves together the crucial elements of fire behavior, land management, and knowledge of the natural environment. Includes a 48-page full-color field guide to common chaparral plants.
Author:
Publisher:
ISBN: 0520286839
Category :
Languages : en
Pages : 566
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Book Description
Author: David Carle
Publisher: Univ of California Press
ISBN: 0520255771
Category : History
Languages : en
Pages : 216
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Book Description
“Carle does an excellent job of telling complex social, biological, and physical stories in a way that makes them not only accessible, but also interesting.”—Neil G. Sugihara, coeditor of Fire in California's Ecosystems “A welcome contribution to the California Natural History Guides series that integrates the natural and cultural history of fire in California in an engaging style.”—James K. Agee, author of Steward's Fork and Fire Ecology of Pacific Northwest Forests
