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Climatic Significance of Light Rings in Timberline Spruce, Picea abies, Austrian Alps
Arctic, Antarctic, and Alpine Research
Vol. 31, No. 3 (Aug., 1999), pp. 242-246
Published by: INSTAAR, University of Colorado
Stable URL: http://www.jstor.org/stable/1552252
Page Count: 5
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A ring-width and light-ring chronology was built from timberline spruce [Picea abies (L.) Karst.] in the eastern Alps in Austria. Comparison of the chronology spanning the period from 1750 to 1997 with a long-term temperature record revealed a close relationship between September and October temperatures and light-ring occurrence. Tracheidogram analysis of radial tracheid diameter and cell-wall thickness of light rings formed in 1912 compared with a reference year confirmed the influence of temperatures of this period on light-ring formation. It is concluded that light rings in timberline spruce are pointers for abnormally low temperatures during the last part of the growing season.
Arctic, Antarctic, and Alpine Research © 1999 Regents of the University of Colorado, a body corporate, contracting on behalf of the University of Colorado at Boulder for the benefit of INSTAAR