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    Oak decline in Helsinki portrayed by tree-rings, climate and soil data

    Oak decline has recently been observed in and around Helsinki. Tree-ring widths of pedunculate oak were used to assess pre-mortem growth patterns, their dependence on climatic factors and linkages to soil thic...

    S. Helama, A. Läänelaid, J. Raisio, H. Tuomenvirta in Plant and Soil (2009)