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    • Rangeland Ecology & Management, Volume 64 (2011)
    • Rangeland Ecology & Management, Volume 64, Number 4 (July 2011)
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    Plains Prickly Pear Response to Fire: Effects of Fuel Load, Heat, Fire Weather, and Donor Site Soil

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    Author
    Vermeire, Lance T.
    Roth, Aaron D.
    Issue Date
    2011-07-01
    Keywords
    duration of heat
    logistic regression
    maximum temperature
    mortality
    Opuntia
    prescribed fire
    
    Metadata
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    Citation
    Vermeire, L. T., & Roth, A. D. (2011). Plains prickly pear response to fire: effects of fuel load, heat, fire weather, and donor site soil. Rangeland Ecology & Management, 64(4), 404-413.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642883
    DOI
    10.2111/REM-D-10-00172.1
    Additional Links
    https://rangelands.org/
    Abstract
    Plains prickly pear (Opuntia polyacantha Haw.) is common throughout the Great Plains and often becomes detrimental to agricultural production on noncultivated lands. We examined direct fire effects on plains prickly pear and mechanisms of tissue damage to facilitate development of fire prescriptions. Cladodes from clones on three soils (claypan, gravelly, silty) were subjected to fire with two weather conditions (moderate, severe) at four fuel loads (1 500, 3 000, 4 500, and 6 000 kg ha-1) and a nonburned control. Fire was simulated with field-collected grass, and heat was measured using thermocouples at the soil surface and 8 cm above. Plants were maintained in a greenhouse and monitored for cladode mortality or growth. Cactus response to fire was examined in a field experiment with four nonburned and four summer-burned 0.75-ha plots. Some plants from each treatment sprouted new cladodes. Donor site soil and fire weather effects were limited to mass of new sprouts as they interacted with fuel load. Fire under any condition reduced cactus mass and survival. Reduction in cactus mass increased from 42% with 1 500 kg ha-1 to 92% with fuel loads of 3 000 kg ha-1 or more. Fuel load, duration of heat, maximum temperature, and degree-seconds were each positively related to mortality, but duration of heat greater than 60 degreesC was the best predictor. Plant mortality was 15% in the field, but number of live cladodes was initially reduced 91%. After one year, number of live cladodes in burned plots was 43% of that in nonburned plots because burned plants sprouted more new cladodes than nonburned plants. Insect and browsing damage occurred on 83% of cladodes in burned plots and only 8% for nonburned plots. Lack of fire weather effects suggests prickly pear control can be achieved under broad fire prescriptions, given the amount of combustible fuel is adequate.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-10-00172.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 64, Number 4 (July 2011)

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