• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Organic carbon Mineralisation in a Subtropical River

    Author(s)
    Pollard, Peter
    Griffith University Author(s)
    Pollard, Peter C.
    Year published
    2004
    Metadata
    Show full item record
    Abstract
    Microorganisms mediate the many biochemical transformations of aquatic ecosystems. Heterotrophic bacteria mineralise most of the total carbon of freshwater and marine ecosystems via the dissolved organic carbon (DOC) fraction. This paper describes the relationship between primary and heterotrophic microbial production in a major subtropical river in South East Queensland, Australia, in dry weather. Stormwater was not the major external source of organic carbon in dry weather. The rate of heterotrophic bacterial production was 4 g C m-2 d-1. The bacteria were decomposing over four times more organic carbon per day than the ...
    View more >
    Microorganisms mediate the many biochemical transformations of aquatic ecosystems. Heterotrophic bacteria mineralise most of the total carbon of freshwater and marine ecosystems via the dissolved organic carbon (DOC) fraction. This paper describes the relationship between primary and heterotrophic microbial production in a major subtropical river in South East Queensland, Australia, in dry weather. Stormwater was not the major external source of organic carbon in dry weather. The rate of heterotrophic bacterial production was 4 g C m-2 d-1. The bacteria were decomposing over four times more organic carbon per day than the daily primary production (1.1 g C m-2 d-1). There was not sufficient organic carbon generated through photosynthesis to support the heterotrophic bacterial growth. The river ecosystem was net heterotrophic. However, the concentration of the DOC in the water column remained relatively constant. The bacteria mineralised the DOC pool every few days. This suggests that organic carbon was constantly being supplied to this aquatic ecosystem from a terrestrial source that was readily degradable. The organic carbon pollution was likely due to non-point sources related to human activities in the catchment.
    View less >
    Journal Title
    Developments in Chemical Engineering and Mineral Processing
    Volume
    12
    Issue
    5/6
    Publisher URI
    https://onlinelibrary.wiley.com/doi/10.1002/apj.5500120506
    Subject
    Chemical Engineering
    Publication URI
    http://hdl.handle.net/10072/5265
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander