Show simple item record

Files in this item


Item metadata

dc.contributor.authorSmeaton, Craig
dc.contributor.authorAustin, William E. N.
dc.identifier.citationSmeaton , C & Austin , W E N 2017 , ' Sources, sinks and subsidies : terrestrial carbon storage in mid-latitude fjords ' , Journal of Geophysical Research - Biogeosciences , vol. 122 , no. 11 , pp. 2754-2768 .
dc.identifier.otherPURE: 251032341
dc.identifier.otherPURE UUID: 0417557a-8b24-441a-b749-48dfe688e3b3
dc.identifier.otherScopus: 85038015515
dc.identifier.otherORCID: /0000-0003-4535-2555/work/39721761
dc.identifier.otherWOS: 000418086800003
dc.descriptionThis work was supported by the Natural Environment Research Council (Grant Number: NE/L501852/1) with additional support from the NERC Life Science Mass Spectrometry Facility (CEH_L_098_11_2015) and the NERC Geophysical Equipment Facility (NGGFSC Minor Loan 1031).en
dc.description.abstractFjords are recognized as globally important sites for the burial and long-term storage of carbon (C) within sediments. The proximity of fjords to the terrestrial environment in combination with their geomorphology and hydrography results in the fjordic sediments being subsidized with organic carbon (OC) from the terrestrial environment. It has been well documented that terrestrial OC (OCterr) is an important component of coastal sediments, yet our understanding of the quantity of OCterr stored in these sediments remains poorly constrained. Utilizing Bayesian isotopic sediment fingerprinting techniques to the surface sediments of Loch Sunart, we estimate that 42.0 ± 10.1% of the OC is terrestrial in origin. Through combining these outputs with sedimentary OC stock estimates, we have calculated that the surface sediments (0–15 cm) hold 0.1 megaton (Mt) OCterr and estimate that the postglacial sediment held within the fjord contains 3.96 Mt OCterr. When these totals are compared to the quantity of OC stored in the adjacent terrestrial environment, it is clear that the fjord's catchment stores a greater amount of OCterr in the form of vegetation and soil. Though when normalized for area the results suggest that the marine sediments are a more effective long-term store of OCterr than the adjacent terrestrial environment. This striking result highlights the importance of the terrestrial environment as a source of OC to the coastal ocean and that the OCterr subsidy to the marine sediments is a significant mechanism for the long-term storage of OC in coastal marine sediments.
dc.relation.ispartofJournal of Geophysical Research - Biogeosciencesen
dc.rights©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectLand-sea interactionsen
dc.subjectGB Physical geographyen
dc.titleSources, sinks and subsidies : terrestrial carbon storage in mid-latitude fjordsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record