Show simple item record

dc.contributor.authorSerrano, Oscar
dc.contributor.authorRicart, Aurora M.
dc.contributor.authorLavery, Paul S.
dc.contributor.authorMateo, Miguel Angel
dc.contributor.authorArias-Ortiz, Ariane
dc.contributor.authorMasque, Pere
dc.contributor.authorRozaimi, Mohammad
dc.contributor.authorSteven, Andy
dc.contributor.authorDuarte, Carlos M.
dc.date.accessioned2016-12-22T13:34:56Z
dc.date.available2016-12-22T13:34:56Z
dc.date.issued2016-08-15
dc.identifier.citationSerrano O, Ricart AM, Lavery PS, Mateo MA, Arias-Ortiz A, et al. (2016) Key biogeochemical factors affecting soil carbon storage in Posidonia meadows. Biogeosciences 13: 4581–4594. Available: http://dx.doi.org/10.5194/bg-13-4581-2016.
dc.identifier.issn1726-4189
dc.identifier.doi10.5194/bg-13-4581-2016
dc.identifier.urihttp://hdl.handle.net/10754/622064
dc.description.abstractBiotic and abiotic factors influence the accumulation of organic carbon (C-org) in seagrass ecosystems. We surveyed Posidonia sinuosa meadows growing in different water depths to assess the variability in the sources, stocks and accumulation rates of Corg. We show that over the last 500 years, P. sinuosa meadows closer to the upper limit of distribution (at 2-4 m depth) accumulated 3- to 4-fold higher C-org stocks (averaging 6.3 kg C-org m(-2) at 3- to 4-fold higher rates (12.8 gC(org) m(-2) yr(-1) ) compared to meadows closer to the deep limits of distribution (at 6-8 m depth; 1.8 kg C-org m(-2) and 3.6 g C-org m(-2) yr(-1) . In shallower meadows, C-org stocks were mostly derived from seagrass detritus (88% in average) compared to meadows closer to the deep limit of distribution (45% on average). In addition, soil accumulation rates and fine-grained sediment content (< 0.125 mm) in shallower meadows (2.0 mm yr(-1) and 9 %, respectively) were approximately 2-fold higher than in deeper meadows (1.2 mm yr(-1) and 5 %, respectively). The C-org stocks and accumulation rates accumulated over the last 500 years in bare sediments (0.6 kg C-org m(-2) and 1.2 g C-org m(-2) yr(-1)were 3- to 11-fold lower than in P. sinuosa meadows, while fine-grained sediment content (1 %) and seagrass detritus contribution to the Corg pool (20 %) were 8- and 3-fold lower than in Posidonia meadows, respectively. The patterns found support the hypothesis that Corg storage in seagrass soils is influenced by interactions of biological (e.g., meadow productivity, cover and density), chemical (e.g., recalcitrance of Corg stocks) and physical (e.g., hydrodynamic energy and soil accumulation rates) factors within the meadow. We conclude that there is a need to improve global estimates of seagrass carbon storage accounting for biogeochemical factors driving variability within habitats.
dc.description.sponsorshipThis work was supported by the ECU Faculty Research Grant Scheme, the ECU Early Career Research Grant Scheme and the CSIRO Flagship Marine & Coastal Carbon Biogeochemical Cluster (Coastal Carbon Cluster) with funding from the CSIRO Flagship Collaboration Fund and the Generalitat de Catalunya (MERS, 2014 SGR-1356). Pere Masque was supported in part by a Gledden Visiting Fellowship awarded by the Institute of Advanced Studies at the University of Western Australia and AAO by a PhD grant of Obra Social
dc.publisherCopernicus GmbH
dc.relation.urlhttp://www.biogeosciences.net/13/4581/2016/
dc.rightsThis work is distributed under the Creative Commons Attribution 3.0 License.
dc.titleKey biogeochemical factors affecting soil carbon storage in <i>Posidonia</i> meadows
dc.typeArticle
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalBiogeosciences
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSchool of Sciences, Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, WA, Australia
dc.contributor.institutionUniversity of Western Australia Oceans Institute, University of Western Australia, 35 Stirling Highway, Crawley, WA, Australia
dc.contributor.institutionDepartament d'Ecologia, Universitat de Barcelona, Av. Diagonal 643, Barcelona, Spain
dc.contributor.institutionCentro de Estudios Avanzados de Blanes, Consejo Superior de Investigaciones Científicas, Blanes, Spain
dc.contributor.institutionDepartament de Física and Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain
dc.contributor.institutionSchool of Physics, University of Western Australia, Crawley, WA, Australia
dc.contributor.institutionSchool of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
dc.contributor.institutionCSIRO, EcoSciences Precinct, 41 Boggo Road, Dutton-Park, QLD, Australia
kaust.personDuarte, Carlos M.
refterms.dateFOA2018-06-14T03:34:24Z


Files in this item

Thumbnail
Name:
bg-13-4581-2016.pdf
Size:
1.337Mb
Format:
PDF
Description:
Main article

This item appears in the following Collection(s)

Show simple item record