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    • Journal of Range Management, Volume 45 (1992)
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    Diurnal measurements of honey mesquite transpiration using stem flow gauges

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    Author
    Dugas, W. A.
    Heuer, M. L.
    Mayeux, H. S.
    Issue Date
    1992-01-01
    Keywords
    evapotranspiration
    sap flow
    diurnal variation
    Prosopis glandulosa var. glandulosa
    watersheds
    transpiration
    environmental factors
    Texas
    rangelands
    
    Metadata
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    Citation
    Dugas, W. A., Heuer, M. L., & Mayeux, H. S. (1992). Diurnal measurements of honey mesquite transpiration using stem flow gauges. Journal of Range Management, 45(1), 99-102.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644693
    DOI
    10.2307/4002535
    Additional Links
    https://rangelands.org/
    Abstract
    Honey mesquite (Prosopis glandulosa Torr. var. glandulosa) stem flow was measured on days with contrasting environmental conditions during the 1989 growing season in Texas. Midday stem flow varied from near 10 to about 300 g hour-1 and daily totals varied from about 1,000 to 2,000 g day-1. On days with low potential evaporation, regardless of precipitation totals for the previous 20 days, stem flow mirrored potential evaporation. On a day with high potential evaporation and high precipitation totals for the previous 20 days, stem flow was greatest and the diurnal pattern was similar to that of potential evaporation. On a day with high potential evaporation and little precipitation for the previous 20 days, stem flow mirrored potential evaporation until about 1030 and decreased throughout the day, while potential evaporation remained high. Variability of stem flow between stems was large, with a C.V. of about 30% for midday rates and a seasonal average C.V. of 37% for daily rates. Stem flow gauges provide continuous and accurate measurements of honey mesquite transpiration. They respond to changing environmental conditions and are useful for evaluating short-term responses of stem flow to physiological and environmental factors in the field and glasshouse.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002535
    Scopus Count
    Collections
    Journal of Range Management, Volume 45, Number 1 (January 1992)

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