Vegetation Changes Within the Subalpine and Mixed Conifer Forests on Mt. Graham, Arizona PDF Download
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Author: R. Scott Anderson
Publisher:
ISBN:
Category : Squirrels
Languages : en
Pages : 58
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Book Description
Author: R. Scott Anderson
Publisher:
ISBN:
Category : Squirrels
Languages : en
Pages : 58
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Book Description
Author: H. Reed Sanderson
Publisher: University of Arizona Press
ISBN: 9780816527687
Category : Science
Languages : en
Pages : 446
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Book Description
Papers from a symposium on the endangered Mt. Graham red squirrel, called in response to the building of an observatory on the mountain by the University of Arizona, offers a comprehensive picture of the ecological conditions and the impacts of natural and man-mad changes on the squirrel and its mountain home.
Author: John Vankat
Publisher: Springer Science & Business Media
ISBN: 940076149X
Category : Science
Languages : en
Pages : 465
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Book Description
The book provides information essential for anyone interested in the ecology of the American Southwest, including land managers, environmental planners, conservationists, ecologists and students. It is unique in its coverage of the hows and whys of dynamics (changes) in the major types of vegetation occurring on southwestern mountains and plateaus. It explains the drivers and processes of change, describes historical changes and provides conceptual models that diagrammatically illustrate past, present, and potential future changes. All major types of vegetation are covered: spruce-fir, mixed conifer, and ponderosa pine forests, pinyon-juniper vegetation, subalpine-montane grassland, and Gambel oak and interior chaparral shrublands. The focus is on vegetation that is relatively undisturbed, i.e., in natural and near-natural condition, and how it responds to natural disturbances such as fire and drought, as well as to anthropogenic disturbances such as fire exclusion and invasive species
Author: Conrad Joseph Bahre
Publisher: University of Arizona Press
ISBN: 0816536392
Category : Science
Languages : en
Pages : 252
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Book Description
The arrival of Anglo settlers in the 1870s marked the beginning of major vegetation changes in southeastern Arizona, including an increase in woody plants in rangelands, the degradation of riparian wetlands, and the spread of non-native plants. While many of these changes have already been linked to human land-use through comparative photographs and historic descriptions, it has long been presumed that changes in the region's climate have also contributed to vegetation change. Geographer Conrad Bahre now challenges the view that these vegetation changes are due to climatic change. Correlating his own field research with archival records and photographs, Bahre demonstrates that most of the changes follow some type of human disturbance, such as cattle grazing, fuelwood cutting, wildfire suppression, agriculture, and road construction. Indeed, all available evidence suggests that Anglo settlement brought unprecedented changes to the land. Vegetation change in the American West has long been an issue of concern. This careful scrutiny of one corner of that region—one of the most ecologically diverse areas of the United States—shows how poorly understood is the relationship between human activities and vegetation. More important, it introduces new techniques for differentiating between natural and anthropogenic factors effecting vegetation change that can be used to help ecologists understand vegetation dynamics worldwide.
Author:
Publisher:
ISBN:
Category : Old growth forests
Languages : en
Pages : 208
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Book Description
Author: Earle F. Layser
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 220
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Book Description
Author: Conrad A. Istock
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 312
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Book Description
A public controversy over plans for construction of an astrophysical observatory in the Pinaleno Mountains of southeastern Arizona swelled during 1987 and 1988. For several years the controversy attracted national attention, then for a while the interest of the press and scientific journals waned, only to revive again recently.
Author: John Vankat
Publisher: Springer
ISBN: 9789400761506
Category : Science
Languages : en
Pages : 461
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Book Description
The book provides information essential for anyone interested in the ecology of the American Southwest, including land managers, environmental planners, conservationists, ecologists and students. It is unique in its coverage of the hows and whys of dynamics (changes) in the major types of vegetation occurring on southwestern mountains and plateaus. It explains the drivers and processes of change, describes historical changes and provides conceptual models that diagrammatically illustrate past, present, and potential future changes. All major types of vegetation are covered: spruce-fir, mixed conifer, and ponderosa pine forests, pinyon-juniper vegetation, subalpine-montane grassland, and Gambel oak and interior chaparral shrublands. The focus is on vegetation that is relatively undisturbed, i.e., in natural and near-natural condition, and how it responds to natural disturbances such as fire and drought, as well as to anthropogenic disturbances such as fire exclusion and invasive species
Author: Leonard F. DeBano
Publisher: DIANE Publishing
ISBN: 0788183869
Category :
Languages : en
Pages : 682
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Book Description
This conference brought together scientists and managers from government, universities, and private organizations to examine the biological diversity and management challenges of the unique "sky island" ecosystems of the mountains of the southwestern U.S. and northwestern Mexico. Session topics included: floristic resources, plant ecology, vertebrates, invertebrates, hydrology and riparian systems, aquatic resources, fire, conservation and management, human uses through time, and visions for the future. Illustrated.
