Mostrar el registro sencillo del ítem
Understanding sediment and carbon accumulation in macrotidal minerogenic saltmarshes for climate resilience
| dc.rights.license | open | en_US |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | AMANN, Benjamin | |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | CHAUMILLON, Eric | |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | BERTIN, Xavier | |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | PIGNON-MUSSAUD, Cecilia | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | PERELLO, Marie-Claire | |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | DUPUY, Christine | |
| hal.structure.identifier | LIttoral ENvironnement et Sociétés [LIENSs] | |
| dc.contributor.author | LONG, Nathalie | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | SCHMIDT, Sabine
IDREF: 131836129 | |
| dc.date.accessioned | 2025-04-14T11:55:13Z | |
| dc.date.available | 2025-04-14T11:55:13Z | |
| dc.date.issued | 2024-10-23 | |
| dc.identifier.issn | 0169-555X | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/206183 | |
| dc.description.abstractEn | Coastal saltmarshes play an essential role in providing services such as coastal protection, support for biodiversity, and sediment and carbon storage. Despite their importance, understanding the factors controlling sediment and carbon accumulation in these minerogenic saltmarshes remains challenging due to their diversity and site-specific characteristics. Understanding the respective role of these drivers is essential for effective coastal management, particularly for mitigating the impacts of climate change. This study evaluates the control of forcing factors on the lateral and vertical morphological evolution and carbon burial rates of three minerogenic saltmarshes located on the French Atlantic coast (Pertuis Charentais region). By focusing on these sites, the study isolates specific factors such as wind and wave exposure, inundation frequency, and sediment availability, while minimizing confounding influences like climate and tidal range. Results reveal significant lateral expansion of saltmarsh boundaries towards the sea across all sites, with the highest rates of progradation observed in the protected areas influenced by geomorphological features such as sand spits and sheltered bay heads. Sediment and mass accumulation rates (SAR; MAR), derived from 210Pb and 137Cs profiles of sediment cores (n = 14), range from 0.48 to 2.22 cm yr-1, among the highest reported globally, with notable variability within and between sites. Inundation frequency and accommodation space explain SAR variability within sites, while sediment availability predominantly determines spatial differences in vertical accumulation rates between sites. Organic carbon burial rates range from 75 to 345 gC m -2 yr-1, and show a strong correlation with SAR (r = 0.9, p<0.001, n = 13) but no dependence on carbon content or density (r = 0.2, p<0.05, n = 13). This highlights the role of sediment input in the accumulation and sequestration of carbon by minerogenic saltmarshes. Furthermore, isotopic analysis indicates a marine source dominance in organic carbon sediment. This research provides insights into how different environmental conditions affect saltmarsh morphological evolution and carbon sequestration rates, informing targeted coastal management strategies focused on enhancing ecosystem resilience and climate resilience. | |
| dc.language.iso | EN | en_US |
| dc.subject.en | saltmarsh morphodynamics | |
| dc.subject.en | Blue carbon | |
| dc.subject.en | Sediment transport | |
| dc.subject.en | Ecosystem services | |
| dc.subject.en | Sea level rise | |
| dc.subject.en | Coastal management | |
| dc.title.en | Understanding sediment and carbon accumulation in macrotidal minerogenic saltmarshes for climate resilience | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1016/j.geomorph.2024.109465 | en_US |
| dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Géomorphologie | en_US |
| dc.subject.hal | Sciences de l'environnement/Milieux et Changements globaux | en_US |
| bordeaux.journal | Geomorphology | en_US |
| bordeaux.page | 109465 | en_US |
| bordeaux.volume | 467 | en_US |
| bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.team | GEOLSED | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | hal | |
| hal.identifier | hal-04747483 | |
| hal.version | 1 | |
| hal.popular | non | en_US |
| hal.audience | Internationale | en_US |
| hal.export | false | |
| workflow.import.source | hal | |
| dc.rights.cc | CC BY | en_US |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geomorphology&rft.date=2024-10-23&rft.volume=467&rft.spage=109465&rft.epage=109465&rft.eissn=0169-555X&rft.issn=0169-555X&rft.au=AMANN,%20Benjamin&CHAUMILLON,%20Eric&BERTIN,%20Xavier&PIGNON-MUSSAUD,%20Cecilia&PERELLO,%20Marie-Claire&rft.genre=article |