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Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers

Author

Listed:
  • Emilio Mayorga

    (University of Washington)

  • Anthony K. Aufdenkampe

    (Stroud Water Research Center)

  • Caroline A. Masiello

    (Rice University)

  • Alex V. Krusche

    (CENA-USP)

  • John I. Hedges

    (University of Washington)

  • Paul D. Quay

    (University of Washington)

  • Jeffrey E. Richey

    (University of Washington)

  • Thomas A. Brown

    (Lawrence Livermore National Laboratory)

Abstract

Amazon basin blues Rivers and their surrounding environments have received little attention in studies addressing regional carbon budgets and global climate change. But recent evidence suggests that Amazonian rivers outgas a significant amount of carbon dioxide. An extensive geochemical survey of rivers in the Amazon basin now finds that the dominant source of carbon dioxide is the respiration of organic matter that is less than five years old, probably originating from near-stream vegetation. Although most of the organic matter transported by these rivers is tens to thousands of years old, it is this small rapidly cycling pool of organic matter that is responsible for the large carbon dioxide fluxes from the rivers to the atmosphere in the humid tropics.

Suggested Citation

  • Emilio Mayorga & Anthony K. Aufdenkampe & Caroline A. Masiello & Alex V. Krusche & John I. Hedges & Paul D. Quay & Jeffrey E. Richey & Thomas A. Brown, 2005. "Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers," Nature, Nature, vol. 436(7050), pages 538-541, July.
    • Handle: RePEc:nat:nature:v:436:y:2005:i:7050:d:10.1038_nature03880
    DOI: 10.1038/nature03880
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    Cited by:

    1. Macdex Mutema & Sandiswa Figlan & Vincent Chaplot, 2023. "Scale Issue for Organic and Inorganic Carbon Exports to Oceans: Case Study in the Sub-Tropical Thukela River Basin, South Africa," Land, MDPI, vol. 12(4), pages 1-10, April.
    2. Kahn, James Randall & Franceschi, Dina, 2006. "Beyond Kyoto: A tax-based system for the global reduction of greenhouse gas emissions," Ecological Economics, Elsevier, vol. 58(4), pages 778-787, July.
    3. Guizhi Qi & Borui Zhang & Biao Tian & Rui Yang & Andy Baker & Pan Wu & Shouyang He, 2023. "Characterization of Dissolved Organic Matter from Agricultural and Livestock Effluents: Implications for Water Quality Monitoring," IJERPH, MDPI, vol. 20(6), pages 1-14, March.
    4. Shaoda Liu, 2019. "Carbon Dioxide Emission from Streams and Rivers as an Integrative Part of Terrestrial Respiration," International Journal of Environmental Sciences & Natural Resources, Juniper Publishers Inc., vol. 19(2), pages 50-54, May.
    5. Robin Naidoo & Taylor H Ricketts, 2006. "Mapping the Economic Costs and Benefits of Conservation," PLOS Biology, Public Library of Science, vol. 4(11), pages 1-12, October.

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