| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Spatial Distributions of Surface Sedimentary Organics and Sediment Profile Image Characteristics in a High-Energy Temperate Marine RiOMar: The West Gironde Mud Patch
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| Autores: |
Lamarque, Bastien
Deflandre, Bruno
Galindo Dalto, Adriana
Schmidt, Sabine
Romero-ramirez, Alicia
Garabetian, Frédéric
Dubosq, Nicolas
Diaz, Melanie
Grasso, Florent
Sottolichio, Aldo
Bernard, Guillaume
Gillet, Hervé
Cordier, Marie-ange
Poirier, Dominique
Lebleu, Pascal
Derriennic, Hervé
Danilo, Martin
Murilo Barboza Tenório, Márcio
Grémare, Antoine
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| Data: |
2021-03
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| Ano: |
2021
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| Palavras-chave: |
RiOMar
Surface sediment
Spatial distribution
Sedimentary organics
Bioturbation
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| Resumo: |
The spatial distributions of (1) surface sediment characteristics (D0.5, Sediment Surface Area (SSA), Particulate Organic Carbon (POC), Chlorophyll-a (Chl-a), Phaeophytin-a (Phaeo-a), Total and Enzymatically Hydrolyzable Amino Acids (THAA, EHAA), δ13C) and (2) sediment profile image (apparent Redox Potential Discontinuity (aRPD), numbers and depths of biological traces) characteristics were quantified based on the sampling of 32 stations located within the West Gironde Mud Patch (Bay of Biscay, NE Atlantic) in view of (1) assessing the spatial structuration of a temperate river-dominated ocean margin located in a high-energy area, (2) disentangling the impacts of hydrodynamics and bottom trawling on this structuration, and (3) comparing the West Gironde Mud Patch with the Rhône River Prodelta (located in a low-energy area). Results support the subdivision of the West Gironde Mud Patch in a proximal and a distal part and show (1) the existence of depth gradients in surface sedimentary organics characteristics and bioturbation within the distal part; (2) no evidence for a significant effect of bottom trawling, as opposed to Bottom Shear Stress, on the West Gironde Mud Patch spatial structuration; and (3) major discrepancies between spatial structuration in the West Gironde Mud Patch and the Rhône River Prodelta, which were attributed to differences in tidal regimes, sedimentation processes, and local hydrodynamics, which is in agreement with current river-dominated ocean margin typologies.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00681/79336/81848.pdf
DOI:10.3390/jmse9030242
https://archimer.ifremer.fr/doc/00681/79336/
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| Editor: |
MDPI AG
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| Relação: |
info:eu-repo/grantAgreement/EC/FP7/654410/EU//JERICO-NEXT
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Marine Science And Engineering (2077-1312) (MDPI AG), 2021-03 , Vol. 9 , N. 3 , P. 242 (32p.)
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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