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    • Rangeland Ecology & Management, Volume 68 (2015)
    • Rangeland Ecology & Management, Volume 68, Number 3 (May 2015)
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    Managing Medusahead (Taeniatherum caput-medusae) on Rangeland: A Meta-Analysis of Control Effects and Assessment of Stakeholder Needs

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    Author
    James, J. J.
    Gornish, E. S.
    DiTomaso, J. M.
    Davy, J.
    Doran, M. P.
    Becchetti, T.
    Lile, D.
    Brownsey, P.
    Laca, E. A.
    Issue Date
    2015-05
    Keywords
    annual grassland
    California
    ecosystem services
    invasive
    restoration
    seeding
    
    Metadata
    Show full item record
    Citation
    James, J. J., Gornish, E. S., DiTomaso, J. M., Davy, J., Doran, M. P., Becchetti, T., Lile, D., Brownsey, P., & Laca, E. A. (2015). Managing Medusahead (Taeniatherum caput-medusae) on Rangeland: A Meta-Analysis of Control Effects and Assessment of Stakeholder Needs. Rangeland Ecology & Management, 68(3), 215–223.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/656929
    DOI
    10.1016/j.rama.2015.03.006
    Additional Links
    https://rangelands.org/
    Abstract
    Invasive plant response to control efforts is strongly modified by site-specific factors, treatment timing, and environmental conditions following treatment, making management outcomes challenging to predict. Systematic reviews, which involve quantitative synthesis of data, can address this challenge by identifying general patterns of treatment effects across studies and quantifying the degree to which these effects vary. We conducted a systematic review of medusahead (Taeniatherum caput-medusae [L.] Nevski) control treatments that couples a meta-analysis on control data with an assessment of stakeholder needs to identify critical medusahead management knowledge gaps. With the meta-analysis we generated effect size estimates of how combinations of herbicide, burning, seeding, and grazing impacted medusahead on rangeland dominated by either annual or perennial vegetation. All combinations of treatments in both rangeland systems provided significant short-term control of medusahead, although treatment effects were highly transient on perennial rangeland, particularly for seeding treatments. Stakeholders listed grazing as a preferred management tool, and on annual rangeland an almost twofold reduction in medusahead abundance was achieved by timing high stocking rates to match phenological stages when medusahead was most susceptible to defoliation. Insufficient data were available to evaluate effects of grazing on medusahead on perennial rangeland. On the basis of these data and our stakeholder survey, four major information needs emerged, including the need to better understand 1) seedbank response to burning and herbicide treatments, 2) how to optimize grazing animal impacts on medusahead given ranch enterprise constraints, 3) costs and benefits of control and risk of practice failure, and 4) impacts of adaptive management treatments conducted on larger scales and at longer time intervals. Addressing these knowledge gaps should help overcome key ecological and economic barriers inhibiting implementation of medusahead and other invasive plant management programs on rangeland and provide a positive step toward conserving the critical ecosystem services these systems provide. © 2015 Society for Range Management. Published by Elsevier Inc. All rights reserved.
    Type
    Article
    text
    Language
    en
    ISSN
    0022-409x
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.rama.2015.03.006
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 68, Number 3 (May 2015)

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