ISSN:
1573-5117
Keywords:
Sulfate reduction
;
meromictic
;
saline lakes
;
Antarctica
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Sulfate reduction rates were measured in waters and sediments from four antarctic lakes and an antarctic fjord basin by a radiometric technique. There was generally a linear correlation between the period of incubation and sulfate reduced; the average of the correlation coefficients was 0.76 ± 0.1. The rates at 6 °C were very low (0.0–1.1 µmol kg−1 d−1) when compared to most other marine and non-marine environments for which sulfate reduction rates have been reported. Lactate and acetate did not stimulate sulfate reduction. Temperatures of the sediments selected from the different sites varied from −0.4 to 4.5 °C and the chloride and sulfate concentrations of the sediments varied from 0.19 to 0.83 mol kg−1 and 0.04 to 41.01 mmol kg−1 respectively. Sulfate reduction rates did not correlate with the chlorosity of sediment porewaters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00025571
