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Isoprene emissions from a Florida scrub oak species grown in ambient and elevated carbon dioxide

Authors
Publisher
Elsevier Ltd
Publication Date
Volume
35
Issue
3
Identifiers
DOI: 10.1016/s1352-2310(00)00332-0
Keywords
  • Carbon Dioxide
  • Elevated Co2
  • Emissions
  • Gas Chromatography
  • Isoprene
  • Open-Topped Chambers
  • Scrub Oak
Disciplines
  • Biology
  • Chemistry
  • Ecology
  • Geography

Abstract

Abstract The emission of isoprene (2-methyl-1,3-butadiene) by terrestrial vegetation is an important biosphere–atmosphere exchange which significantly impacts tropospheric chemistry. Isoprene emissions from Chapman oak ( Quercus chapmanii) grown for over two years in elevated CO 2 levels were measured and compared to emissions from trees grown in ambient CO 2 levels in identical open-topped chambers, and emissions from ambient-grown trees were compared to emissions from trees grown in chamberless control plots. Emission rates were adjusted to 30 μmol m −2 s −1 of light intensity and 30°C, and standard T-tests were performed to compare emission rates. No significant differences in isoprene emission were found in ambient vs. elevated CO 2 grown trees, while emissions from ambient vs. control trees showed a significant chamber effect.

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