Seasonal temperature as a factor influencing bacterial sulfate reduction in a saltmarsh sediment
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The population of sulfate-reducing bacteria in saltmarsh sediment was examined at monthly intervals by plate-counting and by determining the response of sulfate reduction rates to environmental temperature using35SO 4 2− . The sulfate reduction rate was shown to be related to temperature by an Arrhenius function.
The temperature characteristic of the population of sulfate-reducing bacteria did not vary significantly with season, and was shown to be equivalent to 20.4 kcals mole−1, a Q10 of 3.5. Apart from one anomolous result, the monthly value for the Arrhenius constant also did not show any significant variation throughout the year. There was no seasonal trend of optimum temperature for sulfate reduction.
The results suggested that, although environmental temperature was the dominant variable influencing sulfate reduction rates in the sediment, there was no detectable response or adaptation of the sulfate-reducing population to seasonally changing environmental temperature.
KeywordsSulfate Significant Variation Nature Conservation Reduction Rate Temperature Characteristic
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- 1.American Public Health Association: Standard Methods for the Examination of Water and Waste Water, 13th ed. Washington, D.C. (1971)Google Scholar
- 2.Farrell, J., and A. H. Rose: Temperature effects on microorganisms. In: Thermobiology, edited by A. H. Rose, pp. 147–218. Academic Press. London (1967)Google Scholar
- 3.Goldman, J. C., and E. J. Carpenter: A kinetic approach to the effect of temperature on algal growth. Limnol. Oceanogr.19, 756–766 (1974)Google Scholar
- 5.Jorgensen, B. B.: The sulfur cycle of a coastal marine sediment. Limnol. Oceanogr.22, 814–832 (1977)Google Scholar
- 6.Nedwell, D. B., and J. W. Abram: Bacterial sulphate reduction in relation to sulphur geochemistry in two contrasting areas of saltmarsh sediment. Estuar. Coastal Mar. Sci.6, 341–351 (1978)Google Scholar
- 7.Nedwell, D. B., and J. W. Abram: The relative influence of temperature, electron donor and electron acceptor concentrations upon bacterial sulfate dissimilation in saltmarsh sediment. Microbial Ecol.15, 67–72 (1979)Google Scholar
- 8.Nedwell, D. B., and G. D. Floodgate: The seasonal selection by temperature of heterotrophic bacteria in an intertidal sediment. Mar. Biol.11, 306–310 (1971)Google Scholar
- 10.Sieburth, J. McN.: Seasonal selection of estuarine bacteria by water temperature. J. Exp. Mar. Biol. Ecol.1, 98–121 (1967)Google Scholar
- 11.Topiwala, H., and C. G. Sinclair: Temperature relationship in continual culture. Biotech. Bioeng.13, 795–813 (1971)Google Scholar