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    Different Fire Frequency Impacts Over 27 Years on Vegetation Succession in an Infertile Old-Field Grassland

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    Author
    Li, Wenjin
    Zuo, Xiaoan
    Knops, Johannes M. H.
    Issue Date
    2013-05-01
    Keywords
    C3 and C4 grasses
    fire frequency
    grasslands
    legumes
    Lespedeza capitata
    old fields
    Poa pratensis
    Schizachyrium scoparium
    species richness
    succession
    
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    Citation
    Li, W., Zuo, X., & Knops, J. M. (2013). Different fire frequency impacts over 27 years on vegetation succession in an infertile old-field grassland. Rangeland Ecology & Management, 66(3), 267-273.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642712
    DOI
    10.2111/REM-D-11-00226.1
    Additional Links
    https://rangelands.org/
    Abstract
    We examined the effect of fire on vegetation composition with the use of an experiment with four different fire frequencies (annual, 2-yr interval, 4-yr interval, and an intended control with no burning) over a 27-yr period in an infertile, old-field grassland at the Cedar Creek Ecosystem Science Reserve, located in Minnesota, United States. We measured the plant species’ aboveground biomass in permanent plots in 1983, 1987, 1991, 2000, and 2010. None of these fire frequencies, even after 27 yr, had a large impact on the vegetation composition. The plant functional groups’ responses to fire frequency were consistent with their respective dominant species. The most abundant C4 grass, little bluestem (Schizachyrium scoparium Michx.), did not change in biomass with fire frequency over time. The biomass of the introduced, invasive grass, Kentucky bluegrass (Poa pratensis L.) decreased significantly with increasing fire frequency, but this decrease did not result in change to the rate and trajectory of vegetation change. Bush clover (Lespedeza capitata Michx.), the only legume in the community, strongly increased with more frequent fire, but only after 20 yr. Species richness and litter mass decreased significantly with increasing fire frequency. These small fire-induced vegetation changes contrast with large fire-induced vegetation changes in fertile grasslands. Management strategies using fire in infertile grasslands can lower Poa abundance; however, increased fire also decreased overall plant diversity.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-11-00226.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 66, Number 3 (May 2013)

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