Annual Rings in Big Sagebrush: Artemisia Tridentata PDF Download
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Author: Charles Wesley Ferguson
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 208
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Author: Charles Wesley Ferguson
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 208
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Author: Bruce Leigh Welch
Publisher:
ISBN:
Category : Big sagebrush
Languages : en
Pages : 220
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Book Description
Pioneers traveling along the Oregon Trail from western Nebraska, through Wyoming and southern Idaho and into eastern Oregon, referred to their travel as an 800 mile journey through a sea of sagebrush, mainly big sagebrush ( Artemisia tridentata). Today approximately 50 percent of the sagebrush sea has given way to agriculture, cities and towns, and other human developments. What remains is further fragmented by range management practices, creeping expansion of woodlands, alien weed species, and the historic view that big sagebrush is a worthless plant. Two ideas are promoted in this report: (1) big sagebrush is a nursing mother to a host of organisms that range from microscopic fungi to large mammals, and (2) many range management practices applied to big sagebrush ecosystems are not science based.
Author: Marvin A. Stokes
Publisher: University of Arizona Press
ISBN: 0816549036
Category : Science
Languages : en
Pages : 92
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Tree-ring dating, or dendrochronology, is the study of the chronological sequence of annual growth rings in trees. This book--a seminal study in its field--provides a simple yet eloquent introduction to the discipline, explaining what a dendrochronologist does both in the field and in the laboratory. Authors Stokes and Smiley first explain the basic principles of tree-ring dating, then describe details of the process, step by step, from the time a sample is collected until it is incorporated into a master chronology. The book focuses on coniferous evergreens of the Southwest, particularly piñons, because they have wide geographic distribution, constitute a large population, and show excellent growth response to certain controlling factors. The book is specifically concerned with the task of establishing a calendar date for a wood or charcoal specimen. This concise but thorough explication of an important discipline will make dendrochonology more meaningful to students and professionals in archaeology, forestry, hydrology, and global change.
Author:
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Category : Textile fabrics
Languages : en
Pages : 506
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Author:
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Category : Forests and forestry
Languages : en
Pages : 738
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Author:
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Category : Compositae
Languages : en
Pages : 92
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Author:
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Category : Rangelands
Languages : en
Pages : 202
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Author: C. M. McKell
Publisher:
ISBN:
Category : Botany, Economic
Languages : en
Pages : 504
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Author: Jerry R. Barrow
Publisher:
ISBN:
Category : Global environmental change
Languages : en
Pages : 288
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Book Description
This proceedings contains 50 papers including an overview of shrubland ecosystem dynamics in a changing environment and several papers each on vegetation dynamics, management concerns and options, and plant ecophysiology as well as an account of a Jornada Basin field trip. Contributions emphasize the impact of changing environmental conditions on vegetative composition especially in the Jornada Basin and Chihuahuan Desert but also in other parts of western North America and the world.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 112
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