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Past and future marsh adaptation: Lessons learned from the Ria Formosa lagoon

2021Journal article Restricted access
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dc.contributor.authorCarrasco, A. Rita
dc.contributor.authorKompiadou, Katerini
dc.contributor.authorAmado, M.
dc.contributor.authorMatias, Ana
dc.date.accessioned2021-09-23T12:43:58Z
dc.date.available2021-09-23T12:43:58Z
dc.date.issued2021
dc.description.abstractIt is rational to assume that salt marshes in regions where sediment loads are high should remain stable or pro grade when facing a range of sea-level scenarios, whereas those in sediment-poor systems may erode or drown. Despite extensive theoretical and laboratory studies, additional marsh 'persistence' indicators under human pressures and accelerated sea-level rise rates are still needed. This study investigates the recent lateral and volumetric changes occurring in the lagoon marshes of the Ria Formosa lagoon (south Portugal), under human pressures and sea-level rise. Our analysis assesses the past (1947-2014) geomorphological evolution of marshes based on aerial imagery analysis and estimates its potential future adjustment to sea-level rise (-100 years) based on SLAMM (landscape-based model) simulated land cover changes. We highlight the influence of both stressors on marsh ecosystems and examine how their interactions can contribute to understanding sea-level rise impacts and ecological resilience of lagoon marshes. Salt marshes in the Ria Formosa have slowly expanded over the last 70 years (-0.2 mm/yr), with local erosion in front of tidal inlets and along the main navigable channels, associated with inlet migration and dredging activities. Past evolution shows that the ecosystem was able to maintain its functions and cope with sea-level rise. However, future marsh trajectories under a high sea-level rise rate suggest unbalanced vertical marsh accretion and progressive migration of the tidal flat (and water bodies) towards the salt marsh area. The model results show evidence of non-linearity in marsh response to high sea level rise rates, which could indicate the presence of a system tipping-point and potential positive (disturbance reinforcing) feedbacks within the system, with significant implications to marsh resilience.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2021.148082pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/17153
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationNot Available
dc.relationCentre for Marine and Environmental Research (CIMA)
dc.subjectLateral expansionpt_PT
dc.subjectHuman pressurespt_PT
dc.subjectFuture trajectoriespt_PT
dc.subjectTidal flatspt_PT
dc.subjectPositive feedbackspt_PT
dc.titlePast and future marsh adaptation: Lessons learned from the Ria Formosa lagoonpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNot Available
oaire.awardTitleCentre for Marine and Environmental Research (CIMA)
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2018/6680/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1361%2FCT0002/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00350%2F2020/PT
oaire.citation.startPage148082pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume790pt_PT
oaire.fundingStreamCEEC IND 2018
oaire.fundingStreamDL 57/2016
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCarrasco
person.familyNameKombiadou
person.familyNameMatias
person.givenNameA. Rita
person.givenNameKaterina
person.givenNameAna
person.identifier545203
person.identifierR-000-116
person.identifier.ciencia-idA31E-1703-4030
person.identifier.ciencia-id1813-F159-070B
person.identifier.ciencia-id2811-D7C1-1DE2
person.identifier.orcid0000-0002-8980-0068
person.identifier.orcid0000-0003-1199-1236
person.identifier.orcid0000-0003-2090-6291
person.identifier.ridD-2235-2016
person.identifier.ridM-7458-2017
person.identifier.ridE-9709-2013
person.identifier.scopus-author-id15724386100
person.identifier.scopus-author-id16029005200
person.identifier.scopus-author-id56260567900
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
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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