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    • Journal of Range Management, Volume 48 (1995)
    • Journal of Range Management, Volume 48, Number 5 (September 1995)
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    Grazing effects on germinable seeds on the fescue prairie

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    Author
    Willms, W. D.
    Quinton, D. A.
    Issue Date
    1995-09-01
    Keywords
    soil surface
    seed banks
    Festuca campestris
    Alberta
    stocking rate
    grazing intensity
    seed germination
    prairies
    seasonal variation
    botanical composition
    grazing
    prairie soils
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    Citation
    Willms, W. D., & Quinton, D. A. (1995). Grazing effects on germinable seeds on the fescue prairie. Journal of Range Management, 48(5), 423-430.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644262
    DOI
    10.2307/4002246
    Additional Links
    https://rangelands.org/
    Abstract
    The germinable seed bank in a grassland affects the succession of degraded range and the recolonization of disturbed sites, and must be understood to predict potential responses to management. The germinable seed bank on the fescue prairie was characterized and its relationship to grazing, season, and depth of burial determined. The study was conducted in the fescue prairie of southwestern Alberta in livestock exclosures and on paddocks that, since 1949, have been stocked at fixed rates to achieve light, moderate, or heavy grazing pressures. Surface debris was sampled in fall and spring, and soil was sampled to a depth of 6 cm in spring. The samples were spread on vermiculite in trays and the seeds allowed to germinate over a 90-day period. In fall, total surface seed numbers m(-2) increased from 1,785 to 7,783 from the ungrazed to heavily grazed site, and most of the differences were accounted for by whitlow-grass (Draba spp.) and Kentucky bluegrass (Poa pratensis L.). These species also contributed most to differences between fall and spring on the grazed sites. Total seed numbers were similar (1,790 vs 1,803) in spring and fall on ungrazed sites. The species composition of the seed bank did not change with depth. In the soil, the annual forb pygmyflower (Androsace septentrionalis L.) was the most common seed but was not detected in a vegetation survey. Soil disturbance in the fescue prairie is more likely to lead to a seral community dominated by annual forbs, than a rough fescue (Festuca campestris Rydb.) dominated grassland.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002246
    Scopus Count
    Collections
    Journal of Range Management, Volume 48, Number 5 (September 1995)

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