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Science
Vol. 218 no. 4572 pp. 563-565
DOI: 10.1126/science.218.4572.563
  • Reports

Termites: A Potentially Large Source of Atmospheric Methane, Carbon Dioxide, and Molecular Hydrogen

  1. P. J. CRUTZEN3
  1. 1National Center for Atmospheric Research, Boulder, Colorado 80307
  2. 2University of Nairobi, Nairobi, Kenya
  3. 3Max Planck Institute for Atmospheric Chemistry, Mainz, Germany

Abstract

Termites may emit large quantities of methane, carbon dioxide, and molecular hydrogen into the atmosphere. Global annual emissions calculated from laboratory measurements could reach 1.5 x 1014 grams of methane and 5 x 1016 grams of carbon dioxide. As much as 2 x 1014 grams of molecular hydrogen may also be produced. Field measurements of methane emissions from two termite nests in Guatemala corroborated the laboratory results. The largest emissions should occur in tropical areas disturbed by human activities.

  • Received for publication 17 August 1981.
  • Revision received 9 July 1982.