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    • Journal of Range Management, Volume 45 (1992)
    • Journal of Range Management, Volume 45, Number 1 (January 1992)
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    Oak seedling establishment on California rangelands

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    Author
    Adams, T. E.
    Sands, P. B.
    Weitkamp, W. H.
    McDougald, N. K.
    Issue Date
    1992-01-01
    Keywords
    shading
    Quercus lobata
    recruitment
    Quercus
    Quercus douglasii
    seedling emergence
    stand establishment
    seedlings
    California
    rangelands
    
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    Citation
    Adams, T. E., Sands, P. B., Weitkamp, W. H., & McDougald, N. K. (1992). Oak seedling establishment on California rangelands. Journal of Range Management, 45(1), 93-98.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644755
    DOI
    10.2307/4002534
    Additional Links
    https://rangelands.org/
    Abstract
    Factors responsible for poor recruitment of blue oak (Quercus douglasii H. & A.) and valley oak (Q. lobata Nee) need to be determined on California hardwood rangelands so that management strategies for enhancement of recruitment can be developed. To examine selected factors, exclusive of large herbivore impacts, a series of acorn seeding experiments was initiated in 1985 in 6 counties on representative sites. At each site, the experimental treatments were the factorial combination of herbs vs. no herbs and screen protection vs. no protection. The experimental design was 4 randomized complete blocks of the herb treatments with each main plot split for the 2 levels of protection. Rainfall and edaphic factors were used to help interpret measures of seedling emergence, survival, and growth. Herbaceous plant control for reduction of moisture stress was the most important factor examined. Emergence was significantly improved by control in nearly 80% of blue oak seedings and in 33% of valley oak seedings. Average first year survival, expressed as a percent of acorns sown, was significantly improved with control in seedings of both blue oak (33% vs. 18%) and valley oak (45% vs. 21%). Limited data suggest the difference in survival remains consistent over time as overall survival declines. With few exceptions, the addition of screen protection discouraged predation and significantly enhanced survival and growth. Window screen cages also may have contributed an unmeasured shade effect.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002534
    Scopus Count
    Collections
    Journal of Range Management, Volume 45, Number 1 (January 1992)

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