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    • Rangeland Ecology & Management, Volume 61 (2008)
    • Rangeland Ecology & Management, Volume 61, Number 3 (May 2008)
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    Broad-Scale Assessment of Rangeland Health, Grand Staircase-Escalante National Monument, USA

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    Author
    Miller, Mark E.
    Issue Date
    2008-05-01
    Keywords
    Artemisia tridentata Nuttall
    big sagebrush
    ecological sites
    ecosystem assessment
    rangeland condition
    soil properties
    
    Metadata
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    Citation
    Miller, M. E. (2008). Broad-scale assessment of rangeland health, Grand Staircase–Escalante National Monument, USA. Rangeland Ecology & Management, 61(3), 249-262.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642949
    DOI
    10.2111/07-107.1
    Additional Links
    https://rangelands.org/
    Abstract
    Over a 3-yr period, the qualitative assessment protocol ‘‘Interpreting Indicators of Rangeland Health’’ was used to evaluate the status of three ecosystem attributes (soil/site stability, hydrologic function, and biotic integrity) at over 500 locations in and adjacent to Grand Staircase-Escalante National Monument (Utah). Objectives were to provide data and interpretations to support the development of site-specific management strategies and to investigate broad-scale patterns in the status of different rangeland ecological sites. Quantitative data on ground cover, plant community composition, and soil stability were collected to aid the evaluation of qualitative attributes and improve consistency of the assessment process. Ecological sites with potential vegetation dominated by varieties of big sagebrush (Artemisia tridentata Nuttall) had the highest frequencies (46.7%-75.0%) of assessments with low ratings (moderate or greater departure from expected reference conditions) for all three ecosystem attributes. In contrast, sites with potential vegetation characterized by Utah juniper ( Juniperus osteosperma [Torrey] Little) and/ or Colorado pinyon (Pinus edulis Engelmann) had low frequencies (0.0%-7.8%) of assessments with low ratings for all attributes. Several interacting factors likely contributed to the development of patterns among ecological sites, including 1) potential primary production and thus long-term exposure to production-oriented land uses such as livestock grazing; 2) the presence of unpalatable woody plants capable of increasing and becoming persistent site dominants due to selective herbivory, absence of fire, or succession; 3) soil texture through effects on hydrologic responses to livestock grazing, trampling, and other disturbances; and 4) past management that resulted in high livestock use of ecological sites with sensitive fine-loamy soils following treatments designed to increase forage availability. This case study illustrates an extensive application of an assessment technique that is receiving increasing use worldwide, and results contribute to an understanding of factors contributing to patterns and processes of rangeland degradation. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/07-107.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 61, Number 3 (May 2008)

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