Microbial activity affects sulphur in biogenic aragonite
Carbonates that exhibit obvious diagenetic alteration are usually excluded as archives in palaeoenvironmental studies. However, the potential impact of microbial alteration during early diagenesis is still poorly explored. To investigate the sensitivity of sulphur concentration, distribution, oxidat...
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Wiley
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Online Access: | https://oceanrep.geomar.de/id/eprint/51376/ https://oceanrep.geomar.de/id/eprint/51376/9/dep2.133.pdf https://oceanrep.geomar.de/id/eprint/51376/2/dep2133-sup-0001-supinfo.docx https://doi.org/10.1002/dep2.133 |
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ftoceanrep:oai:oceanrep.geomar.de:51376 2024-02-11T10:01:51+01:00 Microbial activity affects sulphur in biogenic aragonite Fichtner, Vanessa Lange, Skadi M. Krause, Stefan Huthwelker, Thomas Borca, Camelia N. Schurr, Simon L. Immenhauser, Adrian Pederson, Chelsea L. Treude, Tina Erhardt, Andrea M. Strauss, Harald 2021-09 text https://oceanrep.geomar.de/id/eprint/51376/ https://oceanrep.geomar.de/id/eprint/51376/9/dep2.133.pdf https://oceanrep.geomar.de/id/eprint/51376/2/dep2133-sup-0001-supinfo.docx https://doi.org/10.1002/dep2.133 en eng Wiley https://oceanrep.geomar.de/id/eprint/51376/9/dep2.133.pdf https://oceanrep.geomar.de/id/eprint/51376/2/dep2133-sup-0001-supinfo.docx Fichtner, V., Lange, S. M., Krause, S. , Huthwelker, T., Borca, C. N., Schurr, S. L., Immenhauser, A., Pederson, C. L., Treude, T. , Erhardt, A. M. and Strauss, H. (2021) Microbial activity affects sulphur in biogenic aragonite. Open Access The Depositional Record, 7 (3). pp. 500-519. DOI 10.1002/dep2.133 <https://doi.org/10.1002/dep2.133>. doi:10.1002/dep2.133 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2021 ftoceanrep https://doi.org/10.1002/dep2.133 2024-01-15T00:22:42Z Carbonates that exhibit obvious diagenetic alteration are usually excluded as archives in palaeoenvironmental studies. However, the potential impact of microbial alteration during early diagenesis is still poorly explored. To investigate the sensitivity of sulphur concentration, distribution, oxidation state and isotopic composition in marine aragonite to microbial alteration, Arctica islandica bivalves and Porites sp. corals were experimentally exposed to anaerobic microbial activity. The anoxic incubation media included a benthic bacterial strain Shewanella sediminis and a natural anoxic sediment slurry with a natural microbial community of unknown species. Combined fluorescence microscopy and synchrotron‐based analysis of the sulphur distribution and oxidation state enabled a comparison of organic matter and sulphur content in the two materials. Results revealed a higher proportion of reduced sulphur species and locally stronger fluorescence within the pristine bivalve shell compared to the pristine coral skeleton. Within the pristine bivalve specimen, reduced sulphur was enriched in layers along the inner shell margin. After incubation in the anoxic sediment slurry, this region revealed rust‐brown staining and a patchy S2‐ distribution pattern rather than S2‐‐layers. Another effect on sulphur distribution was rust‐brown coloured fibres along one growth line, revealing a locally higher proportion of sulphur. The δ34S value of carbonate‐associated sulphate remained largely unaffected by both incubation media, but a lower δ34S value of water‐soluble sulphate reflected the degradation of insoluble organic matter by microbes in both experiments. No significant alteration was detected in the coral samples exposed to microbial alteration. The data clearly identified a distinct sensitivity of organically bound sulphur in biogenic aragonite to microbial alteration even when “traditional” geochemical proxies such as δ18OCARB or δ13CCARB in the carbonate didn’t show any effect. Differences in the intensity of microbial ... Article in Journal/Newspaper Arctica islandica OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) The Depositional Record |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Carbonates that exhibit obvious diagenetic alteration are usually excluded as archives in palaeoenvironmental studies. However, the potential impact of microbial alteration during early diagenesis is still poorly explored. To investigate the sensitivity of sulphur concentration, distribution, oxidation state and isotopic composition in marine aragonite to microbial alteration, Arctica islandica bivalves and Porites sp. corals were experimentally exposed to anaerobic microbial activity. The anoxic incubation media included a benthic bacterial strain Shewanella sediminis and a natural anoxic sediment slurry with a natural microbial community of unknown species. Combined fluorescence microscopy and synchrotron‐based analysis of the sulphur distribution and oxidation state enabled a comparison of organic matter and sulphur content in the two materials. Results revealed a higher proportion of reduced sulphur species and locally stronger fluorescence within the pristine bivalve shell compared to the pristine coral skeleton. Within the pristine bivalve specimen, reduced sulphur was enriched in layers along the inner shell margin. After incubation in the anoxic sediment slurry, this region revealed rust‐brown staining and a patchy S2‐ distribution pattern rather than S2‐‐layers. Another effect on sulphur distribution was rust‐brown coloured fibres along one growth line, revealing a locally higher proportion of sulphur. The δ34S value of carbonate‐associated sulphate remained largely unaffected by both incubation media, but a lower δ34S value of water‐soluble sulphate reflected the degradation of insoluble organic matter by microbes in both experiments. No significant alteration was detected in the coral samples exposed to microbial alteration. The data clearly identified a distinct sensitivity of organically bound sulphur in biogenic aragonite to microbial alteration even when “traditional” geochemical proxies such as δ18OCARB or δ13CCARB in the carbonate didn’t show any effect. Differences in the intensity of microbial ... |
format |
Article in Journal/Newspaper |
author |
Fichtner, Vanessa Lange, Skadi M. Krause, Stefan Huthwelker, Thomas Borca, Camelia N. Schurr, Simon L. Immenhauser, Adrian Pederson, Chelsea L. Treude, Tina Erhardt, Andrea M. Strauss, Harald |
spellingShingle |
Fichtner, Vanessa Lange, Skadi M. Krause, Stefan Huthwelker, Thomas Borca, Camelia N. Schurr, Simon L. Immenhauser, Adrian Pederson, Chelsea L. Treude, Tina Erhardt, Andrea M. Strauss, Harald Microbial activity affects sulphur in biogenic aragonite |
author_facet |
Fichtner, Vanessa Lange, Skadi M. Krause, Stefan Huthwelker, Thomas Borca, Camelia N. Schurr, Simon L. Immenhauser, Adrian Pederson, Chelsea L. Treude, Tina Erhardt, Andrea M. Strauss, Harald |
author_sort |
Fichtner, Vanessa |
title |
Microbial activity affects sulphur in biogenic aragonite |
title_short |
Microbial activity affects sulphur in biogenic aragonite |
title_full |
Microbial activity affects sulphur in biogenic aragonite |
title_fullStr |
Microbial activity affects sulphur in biogenic aragonite |
title_full_unstemmed |
Microbial activity affects sulphur in biogenic aragonite |
title_sort |
microbial activity affects sulphur in biogenic aragonite |
publisher |
Wiley |
publishDate |
2021 |
url |
https://oceanrep.geomar.de/id/eprint/51376/ https://oceanrep.geomar.de/id/eprint/51376/9/dep2.133.pdf https://oceanrep.geomar.de/id/eprint/51376/2/dep2133-sup-0001-supinfo.docx https://doi.org/10.1002/dep2.133 |
genre |
Arctica islandica |
genre_facet |
Arctica islandica |
op_relation |
https://oceanrep.geomar.de/id/eprint/51376/9/dep2.133.pdf https://oceanrep.geomar.de/id/eprint/51376/2/dep2133-sup-0001-supinfo.docx Fichtner, V., Lange, S. M., Krause, S. , Huthwelker, T., Borca, C. N., Schurr, S. L., Immenhauser, A., Pederson, C. L., Treude, T. , Erhardt, A. M. and Strauss, H. (2021) Microbial activity affects sulphur in biogenic aragonite. Open Access The Depositional Record, 7 (3). pp. 500-519. DOI 10.1002/dep2.133 <https://doi.org/10.1002/dep2.133>. doi:10.1002/dep2.133 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/dep2.133 |
container_title |
The Depositional Record |
_version_ |
1790597661561192448 |