at Google ScholarTitle data
Alewell, Christine ; Giesemann, Anette:
Sulfate reduction in a forested catchment as indicated by δ34S values of sulfate in soil solutions and runoff.
In: Isotopes in Environmental and Health Studies.
Vol. 32
(1996)
Issue 2-3
.
- pp. 203-210.
ISSN 1477-2639
DOI: https://doi.org/10.1080/10256019608036312
Abstract in another language
In a forested catchment in the Fichtelgebirge mountains (NE-Bavaria, Germany) the long term SO42- budget (average 1988 - 1994) indicated that about 40% of the input with throughfall (16.8 kg SO4-S.ha-1.yr-1) was retained in the catchment. In order to identify processes acting as potential SO42- sinks, d34S values of SO42- in soil solutions and runoff were measured between May and November 1994. d34S values of the runoff and the fen were higher (5.8 & #137;) than the d34S values of the soil solution of the oxic soils in the terrestrial area (3.9 & #137;). Because there is no lithogenic S source within the catchment, it can be assumed that SO42- deposition is the only S source in the catchment. Thus the results were interpreted as a result of SO42- reduction within the catchment, because the uptake of 32S is favored during the dissimilatory SO42- reduction and 34S is consequently enriched in the soil solution. To estimate the amount of SO42- reduced, isotopic fractionation factors between -9 & #137; and -46 & #137; were considered, resulting in SO42- reduction rates of 1.8 - 9.3 kg SO42-S.ha-1.yr-1. It was concluded that besides dissimilatory SO42- reduction another sink exists in the catchment (e.g. SO42- sorption in deep soil layers).
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Additional notes: | BAYCEER6980 |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences Research Institutions Research Institutions > Research Centres |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science |
| Date Deposited: | 22 Oct 2015 07:29 |
| Last Modified: | 22 Oct 2015 07:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/20746 |