Short-Term Fluxes Through Major Outlets of the North Inlet Marsh in Terms of Adenosine 5′-Triphosphate
Transects across three major creeks joining the North Inlet marsh system to the neighboring ocean and bay environments were characterized in terms of the temporal fluctuations, distribution, and short-term transport of total microbial biomass (measured as adenosine 5′-triphosphate [ATP]). The mean ATP density ranged from 0.865 to 1.357 mg per m3. Highest densities were recovered during flood tides. The distribution of mean ATP densities as well as net flux through each interface proved to be complex with both vertical and horizontal stratification apparent at some locations. A net import of ATP at a rate of about 40 mg per s was noted at the two creeks that interfaced directly with the oceanic environment. A net export was noted through the creek that emptied into the bay. The results indicate that the characterization of a tidal creek interface in terms of ATP, or similar parameters, requires the simultaneous measurement of both the component of interest and directional velocity.
KeywordsMicrobial Biomass Tidal Cycle Oceanic Environment North Inlet Total Microbial Biomass
Unable to display preview. Download preview PDF.
- Axelrad, D. M., K. A. Moore, and M. E. Bender. 1976. Nitrogen, phosphorus and carbon flux in Chesapeake Bay marshes. Bulletin 79, Virginia Water Resources Center.Google Scholar
- Chrzanowski, T. H., and L. H. Stevenson. 1980. Microbial biomass variability in salt-marsh creek cross-sections. Marine Geology (submitted).Google Scholar
- Holm-Hansen, O. 1973. Determination of total microbial biomass by measurement of adenosine triphosphate, p. 73–89. In Estuarine Microbial Ecology (L. H. Stevenson and R. R. Colwell, eds.) University of South Carolina Press, Columbia.Google Scholar
- Kjerfve, B., and J. A. Proehl. 1979. Velocity variability in a cross-section of a well-mixed estuary. Journal of Marine Research 37:409–418.Google Scholar
- Kjerfve, B., L. H. Stevenson, J. A. Proehl, T. H. Chrzanowski, J. D. Spurrier, and W. M. Kitchens. Estimation of material fluxes in an estuarine cross-section; a critical analysis of spatial measurement density and errors. Limnology and Oceanography (submitted).Google Scholar
- Pritchard, D. W. and W. V. Burt. 1951. An inexpensive and rapid technique for obtaining current profiles in estuarine waters. Journal of Marine Research 10:180–189.Google Scholar