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    Dendroclimatic Analysis of White Spruce at its Southern Limit of Distribution in the Spruce Woods Provincial Park, Manitoba, Canada

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    Author
    Chhin, Sophan
    Wang, G. Geoff
    Tardif, Jacques
    Affiliation
    Centre for Forest Interdisciplinary Research (C-FIR), University of Winnipeg, Winnipeg, Manitoba, Canada R3B 2E9
    Issue Date
    2004
    Keywords
    Dendrochronology
    Tree Rings
    Aspen Parkland
    Climate Change
    Dendroclimatology
    Drought Stress
    Mixed-Grass Prairie
    Picea Glauca (Moench) Voss
    Prairie-Forest Boundary
    Response Function
    
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    Citation
    Chhin, S., Wang, G.G., Tardif, J. 2004. Dendroclimatic analysis of white spruce at its southern limit of distribution in the Spruce Woods Provincial Park, Manitoba, Canada. Tree-Ring Research 60(1):31-43.
    Publisher
    Tree-Ring Society
    Journal
    Tree-Ring Research
    URI
    http://hdl.handle.net/10150/262614
    Additional Links
    http://www.treeringsociety.org
    Abstract
    We examined the radial growth - climate association of a disjunct population of white spruce (Picea glauca (Moench) Voss) at its southern limit of distribution. Forty-four white spruce tree islands were sampled over four mixed-grass prairie preserves in the Spruce Woods Provincial Park located in the forestprairie boundary of southwestern Manitoba. Reduced radial growth occurred during the 1910s, 1930s, early 1960s, and the late 1970s to the early 1980s and corresponded to periods of drought on the Canadian prairies, and the Great Plains of the United States. Correlation and response function coefficients indicated that conditions in the summer and fall of the previous year (t-1), and the summer of the current year (t) strongly influenced white spruce growth. Growth was positively correlated with August-September (t-1) and May-June-July (t) precipitation and moisture index (precipitation minus potential evapotranspiration). Radial growth was positively associated with June-July-August (t) river discharge. Growth was most correlated with maximum and mean temperature compared with minimum temperature. Precipitation and maximum temperature accounted for the greatest variation in radial growth (61%). The results suggest that white spruce growth is sensitive to climatic fluctuations because growth is restricted by moisture deficiency exacerbated by temperature-induced drought stress.
    Type
    Article
    Language
    en_US
    ISSN
    2162-4585
    1536-1098
    Collections
    Tree-Ring Research, Vol. 60, No. 1 (2004)

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