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Sedimentary organic carbon and nitrogen sequestration across a vertical gradient on a temperate wetland seascape Including salt marshes, seagrass meadows and rhizophytic macroalgae beds

dc.contributor.authorBarrena de los Santos, Carmen
dc.contributor.authorEgea, Luis G.
dc.contributor.authorMartins, Márcio
dc.contributor.authorSantos, Rui
dc.contributor.authorMasqué, Pere
dc.contributor.authorPeralta, Gloria
dc.contributor.authorBrun, Fernando G.
dc.contributor.authorJiménez-Ramos, Rocío
dc.date.accessioned2024-02-03T09:59:29Z
dc.date.available2024-02-03T09:59:29Z
dc.date.issued2022
dc.date.updated2024-02-01T13:20:07Z
dc.description.abstractCoastal wetlands are key in regulating coastal carbon and nitrogen dynamics and contribute significantly to climate change mitigation and anthropogenic nutrient reduction. We investigated organic carbon (OC) and total nitrogen (TN) stocks and burial rates at four adjacent vegetated coastal habitats across the seascape elevation gradient of Cádiz Bay (South Spain), including one species of salt marsh, two of seagrasses, and a macroalgae. OC and TN stocks in the upper 1 m sediment layer were higher at the subtidal seagrass Cymodocea nodosa (72.3 Mg OC ha−1, 8.6 Mg TN ha−1) followed by the upper intertidal salt marsh Sporobolus maritimus (66.5 Mg OC ha−1, 5.9 Mg TN ha−1), the subtidal rhizophytic macroalgae Caulerpa prolifera (62.2 Mg OC ha−1, 7.2 Mg TN ha−1), and the lower intertidal seagrass Zostera noltei (52.8 Mg OC ha−1, 5.2 Mg TN ha−1). The sedimentation rates increased from lower to higher elevation, from the intertidal salt marsh (0.24 g cm−2 y−1) to the subtidal macroalgae (0.12 g cm−2 y−1). The organic carbon burial rate was highest at the intertidal salt marsh (91 ± 31 g OC m−2 y−1), followed by the intertidal seagrass, (44 ± 15 g OC m−2 y−1), the subtidal seagrass (39 ± 6 g OC m−2 y−1), and the subtidal macroalgae (28 ± 4 g OC m−2 y−1). Total nitrogen burial rates were similar among the three lower vegetation types, ranging from 5 ± 2 to 3 ± 1 g TN m−2 y−1, and peaked at S. maritimus salt marsh with 7 ± 1 g TN m−2 y−1. The contribution of allochthonous sources to the sedimentary organic matter decreased with elevation, from 72% in C. prolifera to 33% at S. maritimus. Our results highlight the need of using habitat-specific OC and TN stocks and burial rates to improve our ability to predict OC and TN sequestration capacity of vegetated coastal habitats at the seascape level. We also demonstrated that the stocks and burial rates in C. prolifera habitats were within the range of well-accepted blue carbon ecosystems such as seagrass meadows and salt marshes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s10021-022-00801-5pt_PT
dc.identifier.eissn1435-0629
dc.identifier.slugcv-prod-3096664
dc.identifier.urihttp://hdl.handle.net/10400.1/20357
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relationAssessment and restoration of coastal blue carbon stocks in Portugal for climate change mitigation (BLUEPORT)
dc.relationBlue carbon inventories in the warm temperate NE Atlantic seagrass meadows
dc.subjectSeascapept_PT
dc.subjectBlue carbonpt_PT
dc.subjectSeagrasspt_PT
dc.subjectSalt marshpt_PT
dc.subjectCadiz baypt_PT
dc.subjectCaulerpapt_PT
dc.titleSedimentary organic carbon and nitrogen sequestration across a vertical gradient on a temperate wetland seascape Including salt marshes, seagrass meadows and rhizophytic macroalgae bedspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitleAssessment and restoration of coastal blue carbon stocks in Portugal for climate change mitigation (BLUEPORT)
oaire.awardTitleBlue carbon inventories in the warm temperate NE Atlantic seagrass meadows
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 3ed/2020.03825.CEECIND%2FCP1597%2FCT0005/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//2020.06996.BD/PT
oaire.citation.endPage842pt_PT
oaire.citation.startPage826pt_PT
oaire.citation.titleEcosystemspt_PT
oaire.citation.volume26pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 3ed
person.familyNameBarrena de los Santos
person.familyNameMartins
person.familyNameSantos
person.givenNameCarmen
person.givenNameMárcio
person.givenNameRui
person.identifier42560
person.identifier.ciencia-idC317-02C0-516E
person.identifier.ciencia-idB511-7AB1-159B
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0002-7013-494X
person.identifier.orcid0000-0002-6969-2215
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridL-3723-2014
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id26427612000
person.identifier.scopus-author-id7201375018
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.cv.cienciaidC317-02C0-516E | Carmen B de los Santos
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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