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High seasonal variability in sediment carbon stocks of coldā€temperate seagrass meadows

2020Journal article Open access
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dc.contributor.authorDahl, Martin
dc.contributor.authorAsplund, Maria E.
dc.contributor.authorDeyanova, Diana
dc.contributor.authorFranco, Joao N.
dc.contributor.authorKoliji, Alan
dc.contributor.authorInfantes, Eduardo
dc.contributor.authorPerry, Diana
dc.contributor.authorBjƶrk, Mats
dc.contributor.authorGullstrƶm, Martin
dc.date.accessioned2021-07-29T14:38:29Z
dc.date.available2021-07-29T14:38:29Z
dc.date.issued2020
dc.description.abstractSeagrass meadows have a high ability to capture and store atmospheric CO2 in the plant biomass and underlying sediment and thereby function as efficient carbon sinks. The seagrass Zostera marina is a common species in the temperate Northern Hemisphere, a region with strong seasonal variations in climate. How seasonality affects carbon storage capacity in seagrass meadows is largely unknown, and therefore, in this study, we aimed to assess variations in sedimentary total organic carbon (TOC) content over a 1ā€year cycle in seagrass meadows on the Swedish west coast. The TOC was measured in two Z. marina sites, one wave exposed and one sheltered, and at two depths (1.5 and 4 m) within each site, every second month from August 2015 to June 2016. We found a strong seasonal variation in carbon density, with a peak in early summer (June), and that the TOC was negatively correlated to the net community production of the meadows, presumably related to organic matter degradation. There was seasonal variation in TOC content at all sediment sections, indicating that the carbon content down to 30 cm is unstable on a seasonal scale and therefore likely not a longā€term carbon sink. The yearly mean carbon stocks were substantially higher in the sheltered meadow (3,965 and 3,465 g māˆ’2) compared to the exposed one (2,712 and 1,054 g māˆ’2) with similar seasonal variation. Due to the large intraā€annual variability in TOC content, seasonal variation should be considered in carbon stock assessments and management for coldā€temperate seagrass meadows.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDahl, M., Asplund, M. E., Deyanova, D., Franco, J. N., Koliji, A., Infantes, E., et al. (2020). High seasonal variability in sediment carbon stocks of coldā€temperate seagrass meadows. Journal of Geophysical Research: Biogeosciences, 125, e2019JG005430. https://doi.org/10.1029/2019JG005430pt_PT
dc.identifier.doi10.1029/2019JG005430pt_PT
dc.identifier.issn2169-8961
dc.identifier.issn2169-8953
dc.identifier.urihttp://hdl.handle.net/10400.8/5970
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleHigh seasonal variability in sediment carbon stocks of coldā€temperate seagrass meadowspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Geophysical Research: Biogeosciencespt_PT
oaire.citation.volume125pt_PT
person.familyNameFranco
person.givenNameJoao N
person.identifier153718
person.identifier.ciencia-id7E1B-4C01-D6BC
person.identifier.orcid0000-0002-8249-5224
person.identifier.scopus-author-id36903257100
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationeb34c96c-a44e-4fe7-aa47-2dfe4aaa76d1
relation.isAuthorOfPublication.latestForDiscoveryeb34c96c-a44e-4fe7-aa47-2dfe4aaa76d1

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