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    • Rangeland Ecology & Management, Volume 61 (2008)
    • Rangeland Ecology & Management, Volume 61, Number 6 (November 2008)
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    Native Plant Growth and Seedling Establishment in Soils Influenced by Bromus tectorum

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    Author
    Rowe, Helen I.
    Brown, Cynthia S.
    Issue Date
    2008-11-01
    Keywords
    arbuscular mycorrhizal fungi
    cheatgrass
    invasion
    native species
    Rocky Mountain National Park
    
    Metadata
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    Citation
    Rowe, H. I., & Brown, C. S. (2008). Native plant growth and seedling establishment in soils influenced by Bromus tectorum. Rangeland Ecology & Management, 61(6), 630-639.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642993
    DOI
    10.2111/08-006.1
    Additional Links
    https://rangelands.org/
    Abstract
    The invasion of 40 million hectares of the American West by cheatgrass (Bromus tectorum L.) has caused widespread modifications in the vegetation of semi-arid ecosystems and increased the frequency of fires. In addition to well-understood mechanisms by which cheatgrass gains competitive advantage, it has been implicated in reducing arbuscular mycorrhizal fungi (AMF) abundance and taxa diversity. We evaluated this possibility at a high elevation site in a two-pronged approach. To test whether cheatgrass changed native AMF communities in ways that affected subsequent native plant growth, we grew cheatgrass and native plants in native soils and then planted native plants into these soils in a greenhouse experiment. We found that cheatgrass-influenced soils did not inhibit native plant growth or AMF sporulation or colonization. To test whether soils in cheatgrass-dominated areas inhibited establishment and growth of native plants, cheatgrass was removed and six seeding combinations were applied. We found that 14.02 +/- 1.7 seedlings m-2 established and perennial native plant cover increased fourfold over the three years of this study. Glyphosate reduced cheatgrass cover to less than 5% in the year it was applied but did not facilitate native plant establishment or growth compared with no glyphosate. We conclude that cheatgrass influence on the soil community does not appear to contribute to its invasion success in these high elevation soils. It appears that once cheatgrass is controlled on sites with sufficient native plant abundance, there may be few lingering effects to inhibit the natural reestablishment of native plant communities. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/08-006.1
    Scopus Count
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    Rangeland Ecology & Management, Volume 61, Number 6 (November 2008)

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