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

    Clinton and Vose measured seasonal fine root respiration rate in situ while controlling chamber temperature and [CO2]. Atmospheric and [CO2] ([CO2]a) and measured soil [CO2] ([CO2]s) were alternately delivered to a cuvette containing intact fine roots of eastern white pine (Pinus strobus L.). Respiration rates were consistently higher in [CO2] [CO2]a than in [CO2]s, and were almost three times higher during midsummer. Respiration rates were immediately reversed after returning to the alternate [CO2] (i.e., [CO2]a ® [CO2]s ® [CO2]a, and vice versa) suggesting a direct effect of elevated [CO2] on apparent respiration. Soil[CO2] -based respiration rates decreased with increasing [CO2] on a dry mass and tissue [N] basis. The authors conclude that estimates of soil CO2 flux and soil carbon budgets may be improved by more completely accounting for the rhizosphere microclimate (i.e., soil temperature and [CO2]s) during measurement of fine root respiration.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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

    Clinton, Barton D.; Vose, James M. 1999. Fine root respiration in mature eastern white pine (Pinus strobus) in situ: the importance of CO2 in controlled environments. Tree Physiology. 19: 475-479.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page