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    • Rangeland Ecology & Management, Volume 69 (2016)
    • Rangeland Ecology & Management, Volume 69, Number 1 (January 2016)
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    Rangeland Monitoring Reveals Long-Term Plant Responses to Precipitation and Grazing at the Landscape Scale

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    Author
    Munson, S.M.
    Duniway, M.C.
    Johanson, J.K.
    Issue Date
    2016
    Keywords
    Bureau of Land Management
    climate and land use change
    Colorado Plateau
    ecological sites
    state-and-transition models
    vegetation monitoring
    
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    Citation
    Munson, S. M., Duniway, M. C., & Johanson, J. K. (2016). Rangeland Monitoring Reveals Long-Term Plant Responses to Precipitation and Grazing at the Landscape Scale. Rangeland Ecology & Management, 69(1), 76–83.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/662813
    DOI
    10.1016/j.rama.2015.09.004
    Additional Links
    https://rangelands.org/
    Abstract
    Managers of rangeland ecosystems require methods to track the condition of natural resources over large areas and long periods of time as they confront climate change and land use intensification. We demonstrate how rangeland monitoring results can be synthesized using ecological site concepts to understand how climate, site factors, and management actions affect long-term vegetation dynamics at the landscape-scale. Forty-six years of rangeland monitoring conducted by the Bureau of Land Management (BLM) on the Colorado Plateau reveals variable responses of plant species cover to cool-season precipitation, land type (ecological site groups), and grazing intensity. Dominant C3 perennial grasses (Achnatherum hymenoides, Hesperostipa comata), which are essential to support wildlife and livestock on the Colorado Plateau, had responses to cool-season precipitation that were at least twice as large as the dominant C4 perennial grass (Pleuraphis jamesii) and woody vegetation. However, these C3 perennial grass responses to precipitation were reduced by nearly one-third on grassland ecological sites with fine-rather than coarse-textured soils, and there were no detectable C3 perennial grass responses to precipitation on ecological sites dominated by a dense-growing shrub, Coleogyne ramosissima. Heavy grazing intensity further reduced the responses of C3 perennial grasses to cool-season precipitation on ecological sites with coarse-textured soils and surprisingly reduced the responses of shrubs as well. By using ecological site groups to assess rangeland condition, we were able to improve our understanding of the long-term relationships between vegetation change and climate, land use, and site characteristics, which has important implications for developing landscape-scale monitoring strategies. © 2016 Society for Range Management. Published by Elsevier Inc. All rights reserved.
    Type
    Article
    text
    Language
    en
    ISSN
    1550-7424
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.rama.2015.09.004
    Scopus Count
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    Rangeland Ecology & Management, Volume 69, Number 1 (January 2016)

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