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    • Rangeland Ecology & Management, Volume 69 (2016)
    • Rangeland Ecology & Management, Volume 69, Number 6 (November 2016)
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    Prescribed Fire Effects on Population Dynamics of an Annual Grassland

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    Author
    Berleman, S.A.
    Suding, K.N.
    Fry, D.L.
    Bartolome, J.W.
    Stephens, S.L.
    Issue Date
    2016
    Keywords
    invasive
    medusahead
    prescribed fire
    rangeland ecology
    rangeland management
    restoration
    
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    Citation
    Berleman, S. A., Suding, K. N., Fry, D. L., Bartolome, J. W., & Stephens, S. L. (2016). Prescribed Fire Effects on Population Dynamics of an Annual Grassland. Rangeland Ecology & Management, 69(6), 423–429.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/662754
    DOI
    10.1016/j.rama.2016.07.006
    Additional Links
    https://rangelands.org/
    Abstract
    Medusahead (Elymus caput-medusae [L.] Nevski) is a highly damaging invasive annual grass in California rangelands. While it has been shown that prescribed fire can be a successful tool in controllingmedusahead populations, fire treatments are not always successful. Given the sociological and economic constraints of prescribed fire use, it is critically important that we maximize likelihood of treatment success. We conducted experimental investigation of population dynamics of competing species from different functional groups: invasive annual medusahead, naturalized but forageable nonnative wild oat (Avena spp. Pott ex Link), and native perennial purple needlegrass (Stipa pulchra [Hitchc.] Barkworth). We observed population dynamics at the 1-m2 scale before and after treatments of prescribed fire and seed-limitation (weed whipping in a 1-m buffer area). We asked 1) what is the role of seed dispersal from burn edges on subsequent medusahead population size? and 2) how do density and fecundity of the dominant species respond to fire? Results showed that 1) seed dispersal is an important factor in recovery dynamics and 2) wild oat fecundity significantly increases in the year after fire while medusahead and needlegrass fecundity seem minimally affected. Ultimately, managers should consider fire as a preferable first-entry tool and should thoroughly consider shape and size of planned burns, aswell aswhat vegetation is present to play a role in post-treatment seed-dispersal dynamics. © 2016 The Society for Range Management. Published by Elsevier Inc. All rights reserved.
    Type
    Article
    text
    Language
    en
    ISSN
    1550-7424
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.rama.2016.07.006
    Scopus Count
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    Rangeland Ecology & Management, Volume 69, Number 6 (November 2016)

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