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SedSulphOx

Quantification of oxidative sulphur cycling in marine sediments

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

SedSulphOx project word cloud

Explore the words cloud of the SedSulphOx project. It provides you a very rough idea of what is the project "SedSulphOx" about.

seafloor concurrent formed connected oxidative fe resolving quantification stable either radiotracer coastal isotope ancient methane signatures speciation mineralisation oxidation evolution react questions sulphate rates coupled earth organic interpretation inorganic intimately intermediate pyrite sediment amount estimates cycle debates fundamental sulphide sulphur biogeochemistry modern metabolism critical regarding responsible cycling ad oxidised sediments quantify marine buried intermediates herein combination sub experiments species accurate constraining implications biogeochemical decomposition microbial unanswered description carbon

Project "SedSulphOx" data sheet

The following table provides information about the project.

Coordinator	AARHUS UNIVERSITET Organization address address: NORDRE RINGGADE 1 city: AARHUS C postcode: 8000 website: www.au.dk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
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.

#	participants	country	role	EC contrib. [€]
1	AARHUS UNIVERSITET AARHUS UNIVERSITET Organization address address: NORDRE RINGGADE 1 city: AARHUS C postcode: 8000 website: www.au.dk contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	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

List of publications.
year	authors and title	journal	last update
2019	Alyssa J. Findlay, Emily R. Estes, Amy Gartman, Mustafa YÃ¼cel, 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 JÃ¸rgensen, Alyssa J. Findlay, AndrÃ© 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, AndrÃ© 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-SchÃ¶nberg, 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	AndrÃ© Pellerin, Gilad Antler, Simon Agner Holm, Alyssa J. Findlay, Peter W. Crockford, Alexandra V. Turchyn, Bo Barker JÃ¸rgensen, 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	AndrÃ© Pellerin, Gilad Antler, Hans RÃ¸y, Alyssa Findlay, Felix Beulig, Caroline Scholze, Alexandra V. Turchyn, Bo Barker JÃ¸rgensen 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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