Correlation Engine 2.0
Clear Search sequence regions

  • biomass (2)
  • brazil (1)
  • oxygen (2)
  • redox (1)
  • sweden (1)
  • Sizes of these terms reflect their relevance to your search.

    Close to redox boundaries, dark carbon fixation by chemoautotrophic bacteria may be a large contributor to overall carbon fixation. Still, little is known about the relative importance of this process in lake systems, in spite the potentially high chemoautotrophic potential of lake sediments. We compared rates of dark carbon fixation, bacterial production and oxygen consumption in sediments from four Swedish boreal and seven tropical Brazilian lakes. Rates were highly variable and dark carbon fixation amounted up to 80% of the total heterotrophic bacterial production. The results indicate that non-photosynthetic carbon fixation can represent a substantial contribution to bacterial biomass production, especially in sediments with low organic matter content.


    Ana LĂșcia Santoro, David Bastviken, Cristian Gudasz, Lars Tranvik, Alex Enrich-Prast. Dark carbon fixation: an important process in lake sediments. PloS one. 2013;8(6):e65813

    Expand section icon Mesh Tags

    Expand section icon Substances

    PMID: 23776549

    View Full Text