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Author: Joseph Frank Pechanec
Publisher:
ISBN:
Category : Big sagebrush
Languages : en
Pages : 44
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Book Description
Author: Joseph Frank Pechanec
Publisher:
ISBN:
Category : Big sagebrush
Languages : en
Pages : 44
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Book Description
Author: Bruce Leigh Welch
Publisher:
ISBN:
Category : Big sagebrush
Languages : en
Pages : 8
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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:
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ISBN:
Category : Fire ecology
Languages : en
Pages : 124
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This document provides managers with a literature synthesis of the historical conditions, current conditions, fire regime condition classes (FRCC), and recommended treatments for the major ecosystems in southern Utah. Sections are by ecosystems and include: 1) coniferous forests (ponderosa pine, mixed conifer, and Engelmann spruce-subalpine fir), 2) aspen, 3) pinyon-juniper, 4) big and black sagebrush, and 5) desert shrubs (creosotebush, blackbrush, and interior chaparral). Southern Utah is at the ecological crossroads for much of the western United States. It contains steep environmental gradients and a broad range of fuels and fire regimes associated with vegetation types representative of the Rocky Mountains, the Great Basin, Northern Arizona and New Mexico, and the Mohave Desert. The Southern Utah Demonstration Area consists of contiguous state and federal lands within the administrative boundaries of the Bureau of Land Management (BLM), Fishlake and Dixie National Forests, National Park Sevice, and State of Utah, roughly encompassing the southern 15 percent of Utah (3.24 million ha). The vegetation types described are similar in species composition, stand structure, and ecologic function, including fire regime to vegetation types found on hundreds of millions of hectares in the 11 western states.
Author: David L. Sturges
Publisher:
ISBN:
Category : Rangeland hydrology
Languages : en
Pages : 32
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Author: Bruce Leigh Welch
Publisher:
ISBN:
Category : Big sagebrush
Languages : en
Pages : 38
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Book Description
This paper examines the scientific merits of eight axioms of range or vegetative management pertaining to big sagebrush. These axioms are: (1) Wyoming big sagebrush (Artemisia tridentata ssp.wyomingensis) does not naturally exceed 10 percent canopy cover and mountain big sagebrush (A.t.ssp.vaseyana) does not naturally exceed 20 percent canopy cover; (2) As big sagebrush canopy cover increases over 12 to15 percent, bare ground increases and perennial grass cover decreases; (3) Removing, controlling, or killing big sagebrush will results in a two or three or more fold increase in perennial grass production; (4) Nothing eats it; (5) Biodiversity increases with removing, controlling, thinning, or killing of big sagebrush; (6) Mountain big sagebrush evolved in an environment with a mean fire interval of 20 to 30 years; (7) Big sagebrush is an agent of allelopathy; and (8) Big sagebrush is a highly competitive, dominating, suppressive plant species.
Author:
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 202
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Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 406
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 152
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 204
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