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Roel J. W. Brienen, Emanuel Gloor and Pieter A. Zuidema Detecting evidence for CO2 fertilization from tree ring studies: The potential role of sampling biases Global Biogeochemical Cycles 26

Article first published online: 17 MAR 2012 | DOI: 10.1029/2011GB004143

Key Points

  • Observed increases in tree ring widths may be caused by sampling biases
  • Standard sampling methods lead to spurious trends in historical growth rates
  • Reported increases in ring width may often not be due to CO2 fertilization

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