SedSulphOx
Quantification of oxidative sulphur cycling in marine sediments
Total Cost €
0EC-Contrib. €
0Partnership
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Project "SedSulphOx" data sheet
The following table provides information about the project.
| Coordinator |
AARHUS UNIVERSITET
Organization address contact info |
| Coordinator Country | Denmark [DK] |
| Project website | http://pure.au.dk/portal/en/persons/alyssa-jean-lehsau-findlay |
| Total cost | 200˙194 € |
| EC max contribution | 200˙194 € (100%) |
| Programme |
1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility) |
| Code Call | H2020-MSCA-IF-2016 |
| Funding Scheme | MSCA-IF-EF-ST |
| Starting year | 2017 |
| Duration (year-month-day) | from 2017-06-01 to 2019-05-31 |
Partnership
Take a look of project's partnership.
| # | ||||
|---|---|---|---|---|
| 1 | AARHUS UNIVERSITET | DK (AARHUS C) | coordinator | 200˙194.00 |
Map
Project objective
The goal of this proposal is to quantify the rates and processes of sulphide oxidation in coastal sediments. The marine sulphur cycle is driven by the reduction of sulphate to sulphide coupled to microbial decomposition of organic matter, a process which is responsible for up to 50 % of carbon mineralisation in coastal sediment and is intimately connected to earth’s biogeochemical evolution. The sulphide produced by sulphate reduction may either react with Fe to be buried as pyrite or may be oxidised through different pathways and intermediates. The amount of sulphide that is oxidised in marine sediments is not known, yet oxidative sulphur cycling has critical implications for estimates of sulphate reduction, sub-seafloor carbon mineralisation, methane oxidation, microbial metabolism and the interpretation of ancient and modern stable isotope signatures. Quantification of oxidative sulphur cycling, including sulphide oxidation rates, the formation of key intermediate species and associated stable isotope effects is therefore fundamental to our understanding of sub-seafloor biogeochemistry. The research proposed herein will address these yet unanswered questions through a novel combination of radiotracer experiments, stable isotope measurements, and analyses of inorganic sulphur speciation. This approach will be applied to (1) quantify rates of concurrent sulphate reduction and sulphide oxidation in coastal sediment, (2) quantify the formation of intermediate species formed during sulphide oxidation and (3) measure stable isotope effects associated with oxidative sulphur cycling. This work will result in a more accurate description of sediment biogeochemistry by resolving current debates regarding the role of sulphur for carbon mineralisation ad further constraining processes which affect the sulphur stable isotope distribution.
Publications
| year | authors and title | journal | last update |
|---|---|---|---|
| 2019 |
Alyssa J. Findlay, Emily R. Estes, Amy Gartman, Mustafa Yücel, Alexey Kamyshny, George W. Luther Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-019-09580-5 |
Nature Communications 10/1 | 2020-01-27 |
| 2019 |
Bo Barker Jørgensen, Alyssa J. Findlay, André Pellerin The Biogeochemical Sulfur Cycle of Marine Sediments published pages: , ISSN: 1664-302X, DOI: 10.3389/fmicb.2019.00849 |
Frontiers in Microbiology 10 | 2020-01-27 |
| 2019 |
Alyssa J. Findlay, Valeria Boyko, André Pellerin, Khoren Avetisyan, Qingjun Guo, Xi Yang, Alexey Kamyshny Sulfide oxidation affects the preservation of sulfur isotope signals published pages: 739-743, ISSN: 0091-7613, DOI: 10.1130/g46153.1 |
Geology 47/8 | 2020-01-27 |
| 2019 |
Amy Gartman, Alyssa J. Findlay, Mark Hannington, Dieter Garbe-Schönberg, John W. Jamieson, Tom Kwasnitschka The role of nanoparticles in mediating element deposition and transport at hydrothermal vents published pages: 113-131, ISSN: 0016-7037, DOI: 10.1016/j.gca.2019.06.045 |
Geochimica et Cosmochimica Acta 261 | 2020-01-27 |
| 2019 |
André Pellerin, Gilad Antler, Simon Agner Holm, Alyssa J. Findlay, Peter W. Crockford, Alexandra V. Turchyn, Bo Barker Jørgensen, Kai Finster Large sulfur isotope fractionation by bacterial sulfide oxidation published pages: eaaw1480, ISSN: 2375-2548, DOI: 10.1126/sciadv.aaw1480 |
Science Advances 5/7 | 2020-01-27 |
| 2019 |
Eyal Wurgaft, Alyssa J. Findlay, Hanni Vigderovich, Barak Herut, Orit Sivan Sulfate reduction rates in the sediments of the Mediterranean continental shelf inferred from combined dissolved inorganic carbon and total alkalinity profiles published pages: 64-74, ISSN: 0304-4203, DOI: 10.1016/j.marchem.2019.03.004 |
Marine Chemistry 211 | 2020-01-27 |
| 2018 |
André Pellerin, Gilad Antler, Hans Røy, Alyssa Findlay, Felix Beulig, Caroline Scholze, Alexandra V. Turchyn, Bo Barker Jørgensen The sulfur cycle below the sulfate-methane transition of marine sediments published pages: 74-89, ISSN: 0016-7037, DOI: 10.1016/j.gca.2018.07.027 |
Geochimica et Cosmochimica Acta 239 | 2020-01-27 |
| 2017 |
Alyssa J. Findlay, Alexey Kamyshny Turnover Rates of Intermediate Sulfur Species (Sx2-, S0, S2O32-, S4O62-, SO32-) in Anoxic Freshwater and Sediments published pages: , ISSN: 1664-302X, DOI: 10.3389/fmicb.2017.02551 |
Frontiers in Microbiology 8 | 2020-01-27 |
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