||Use of Stable Carbon Isotopes to Study Microbial Processes in Estuaries. (Chapter 10).
Coffin, R. B. ;
Cifuentes, L. A. ;
Elderidge, P. M. ;
||Environmental Research Lab., Gulf Breeze, FL. Office of Research and Development. ;Texas A and M Univ., College Station.
Carbon cycle ;
Carbon isotopes ;
Tracer techniques ;
Case studies ;
DIC(Dissolved inorganic carbon) ;
Dissolved inorganic carbon ;
POC(Particulate organic carbon) ;
Particulate organic carbon ;
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The paper describes the use of bacterial carbon pools and bacterial dynamics in studies of estuarine carbon cycling. The authors suggest that field data from such studies, which include all the carbon pools, coupled with modelling efforts can be used to study the extent of eutrophication in estuarine systems. Carbon isotope data on bacterial carbon sources are described for several estuaries. Authors present a model that predicts the relative importance of respiration and atmospheric exchange on the isotope ratio of DIC in an estuary.