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    Vegetation Responses to Prescribed Burning of Grazed Shortgrass Steppe

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    Author
    Augustine, David J.
    Milchunas, Daniel G.
    Issue Date
    2009-01-01
    Keywords
    Bouteloua gracilis
    fire-grazing interaction
    forage quality
    Gutierrezia sarothrae
    mountain plover
    Opuntia polyacantha
    
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    Citation
    Augustine, D. J., & Milchunas, D. G. (2009). Vegetation responses to prescribed burning of grazed shortgrass steppe. Rangeland Ecology & Management, 62(1), 89-97.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/643008
    DOI
    10.2111/08-135
    Additional Links
    https://rangelands.org/
    Abstract
    Over the past century, fire has been widely suppressed in the western Great Plains, in part because of the potential negative effects on forage production for livestock. More recently, interest in the use of prescribed fire in shortgrass steppe has increased because of the potential applications for wildlife management, control of unpalatable plant species, and restoration of historic disturbance regimes. We studied the effects of prescribed burns conducted during late winter on herbaceous production, forage nitrogen content, and plant species composition of shortgrass steppe on the Pawnee National Grassland in northeastern Colorado. Late-winter burns conducted in moderately grazed sites under a wide range of precipitation conditions during 1997-2001 did not negatively affect herbaceous production in either the first or the second postburn growing season. Burning followed by a severe drought in 2002 reduced production by 19% in the second postburn growing season of 2003. Burns temporarily suppressed the abundance of broom snakeweed (Gutierrezia sarothrae) and prickly pear cactus (Opuntia polyacantha) and enhanced forage nitrogen content during May and June of the first postburn growing season. These findings suggest that, except following severe drought, prescribed burns conducted during late winter in grazed shortgrass steppe for objectives unrelated to livestock production can also have neutral or positive consequences for livestock. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/08-135
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 62, Number 1 (January 2009)

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