Interstitial dissolved organic carbon in sediments of a Southern Appalachian headwater stream. Crocker, M. T. Journal of the North American Benthological Society, 1987.
Interstitial dissolved organic carbon in sediments of a Southern Appalachian headwater stream. [pdf]Paper  abstract   bibtex   
Objectives were to compare seasonal and spatial patterns of dissolved organic carbon (DOC) and interstitial DOC (IDOC) concentrations at a headwater spring seep, and to explore interactions between sediment organic matter content, benthic bacterial biomass, water column DOC concentration, and sediment IDOC concentration and composition. Sediment organic matter content, IDOC concentration, water column DOC concentration, and benthic bacterial biomass were measured in a spring seep at Coweeta for two years. Organic matter content was increased or decreased in experimental sediments, and variables measured within three weeks of sediment manipulation and again after five and a half months. Benthic bacterial production was measured one week after sediment manipulation. Benthic organic matter is a source of IDOC, the concentration of which depends on sediment organic matter content, the relative proportion of high and low molecular weight IDOC compounds, and the exchange of interstitial and water column DOC.

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