Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub

    Description

    To test tree growth-sensitivity to temperature under different ambient CO2 concentrations, we determined stem radial growth rates as they relate to variation in temperature during the last deglacial period, and compare these to modern tree growth rates as they relate to spatial variation in temperature across the modern species distributional range. Paleo oaks were sampled from Northern Missouri, USA and compared to a pollen-based, high-resolution paleo temperature reconstruction from Northern Illinois, USA. Growth data were from 53 paleo bur oak log cross-sections collected in Missouri. These oaks were preserved in river and stream sediments and were radiocarbon-dated to a period of rapid climate change during the last deglaciation (10.5 and 13.3 cal kyr BP). Growth data from modern bur oaks were obtained from increment core collections paired with USDA Forest Service Forest Inventory and Analysis data collected across the Great Plains, Midwest and Upper Great Lakes regions. For modern oaks growing at an average [CO2] of 330 ppm, growth-sensitivity to temperature (i.e. the slope of growth rate versus temperature) was about twice that of paleo oaks growing at an average [CO2] of 230 ppm. These data help confirm that leaf-level predictions that photosynthesis and thus growth will be more sensitive to temperature at higher [CO2] in mature trees -- suggesting tree growth forest productivity will be increasingly sensitive to temperature under projected global warming and high-[CO2] conditions.

    Publication Notes

    • Visit PNW's Publication Request Page to request a hard copy of this publication.
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Voelker, Steven L.; Stambaugh, Michael C.; Renée Brooks, J.; Meinzer, Frederick C.; Lachenbruch, Barbara; Guyette, Richard P. 2017. Evidence that higher [CO2] increases tree growth sensitivity to temperature: a comparison of modern and paleo oaks. Oecologia. 183(4): 1183-1195. https://doi.org/10.1007/s00442-017-3831-6.

    Cited

    Google Scholar

    Keywords

    Carbon dioxide, NPP, GPP, photosynthesis, forest productivity.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/55292