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SedSulphOx

Quantification of oxidative sulphur cycling in marine sediments

Total Cost €

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EC-Contrib. €

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Partnership

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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 DK (AARHUS C) coordinator 200˙194.00

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 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
List of publications.
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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