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dc.contributor.authorHunt, Corallie Anne
dc.contributor.authorDemsar, Urska
dc.contributor.authorDove, Dayton
dc.contributor.authorSmeaton, Craig
dc.contributor.authorCooper, Rhys
dc.contributor.authorAustin, William
dc.identifier.citationHunt , C A , Demsar , U , Dove , D , Smeaton , C , Cooper , R & Austin , W 2020 , ' Quantifying marine sedimentary carbon : a new spatial analysis approach using seafloor acoustics, imagery, and ground-truthing data in Scotland ' , Frontiers in Marine Science , vol. 7 , 588 .
dc.identifier.otherPURE: 268707369
dc.identifier.otherPURE UUID: de7c6d0e-aadf-45fe-9254-055cf2abf79c
dc.identifier.otherORCID: /0000-0001-7791-2807/work/78205021
dc.identifier.otherORCID: /0000-0003-4535-2555/work/78205051
dc.identifier.otherORCID: /0000-0002-1955-7277/work/78205113
dc.identifier.otherWOS: 000553446800001
dc.identifier.otherScopus: 85089345687
dc.descriptionThis work received joint funding from the University of St Andrews and the MASTS pooling initiative (The Marine Alliance for Science and Technology for Scotland) and their support is gratefully acknowledged. MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions. Additionally this work was funded via a grant to WA from the Natural Environment Research Council/Biotechnology and Biological Sciences Research Council (NERC/BBSRC) (grant number BB/M026620/1).en
dc.description.abstractMarine sediments are important repositories of organic matter, effectively burying organic carbon (OC) over geological timescales thus providing a climate regulation service. However, the spatial distribution of this marine sedimentary OC store is not well constrained. In this study we leverage a high resolution multibeam echosounder (MBES) survey taken at Loch Creran, a model fjordic site on the west coast of Scotland, to develop a new methodology for predicting the distribution of OC in surface sediments. Using an integrated approach, we use MBES survey, video imagery and ground-truthing data to produce a high-resolution (2 × 2 m) map of surficial carbon and calculate a 10 cm stock. We find that the backscatter survey reliably uncovers a heterogeneous seabed and that OC correlates strongly with the MBES backscatter signal as a function of sediment composition. We estimate that there are approximately 12,346 ± 2,677 t of OC held within the top 10 cm of mixed sediments across the MBES survey area (7.96 km2; 60% of the total area), upscaled to 20,577 ± 4,462 t of OC across Loch Creran (13.27 km2). Normalised by area, we find that fine sediments with small fractions of sand and gravel hold more OC than homogenous fine sediments. This initial work proposes a novel methodological approach to using high resolution MBES surveys to improve the spatial mapping of sedimentary carbon (C) and identification of C hotspots, enabling consideration of this resource in sedimentary carbon accounting, seabed management and climate mitigation strategies.
dc.relation.ispartofFrontiers in Marine Scienceen
dc.rightsCopyright © 2020 Hunt, Demšar, Dove, Smeaton, Cooper and Austin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.subjectOrganic carbonen
dc.subjectSeabed mappingen
dc.subjectCarbon stocksen
dc.subjectQE Geologyen
dc.subjectSDG 13 - Climate Actionen
dc.subjectSDG 14 - Life Below Wateren
dc.titleQuantifying marine sedimentary carbon : a new spatial analysis approach using seafloor acoustics, imagery, and ground-truthing data in Scotlanden
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.contributor.institutionUniversity of St Andrews. Environmental Change Research Groupen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Coastal Resources Management Groupen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.description.statusPeer revieweden

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