| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Influence of Crepidula fornicata on suspended particle dynamics in coastal systems: a mesocosm experimental study
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| Autores: |
Grasso, Florent
Carlier, Antoine
Cugier, Philippe
Verney, Romaric
Marzloff, Martin
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| Data: |
2020
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| Ano: |
2020
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| Palavras-chave: |
Laboratory experiments
Coastal processes
Physical-biological interactions
Benthic engineer species
Mud settling
Flocculation
Biofiltration
Organic matter
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| Resumo: |
In coastal environments, strong feedback can exist between benthic fauna and sediment dynamics. Benthic populations can modify sediment dynamics through biofiltration and bioturbation, while hydro- and sediment dynamics directly determine local environmental conditions for benthic organisms. However, these complex feedbacks are difficult to study in situ. Here, we carried out mesocosm experiments to characterize the effects of a benthic species (the gastropod Crepidula fornicata) on mud dynamics under hydrodynamic conditions representative of their natural habitat. Different experimental tests related to the inclusion (or not) of dead or live crepidula reveal that biofiltration can increase particle settling up to 40%. Flocculation, which is strengthened by organic matter enrichment in shell beds, also substantially increases particle settling. Thus, both processes enhance sedimentation above live crepidula habitats. Furthermore, these experiments highlight serious technical, physical and biological challenges that have to be tackled for properly investigating bio-physical interactions.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00662/77403/79043.pdf
DOI:10.1080/24705357.2020.1834884
https://archimer.ifremer.fr/doc/00662/77403/
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| Editor: |
Informa UK Limited
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| Relação: |
info:eu-repo/grantAgreement/EC/H2020/654110/EU//HYDRALAB+
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| Formato: |
application/pdf
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| Fonte: |
Journal of Ecohydraulics (2470-5357) (Informa UK Limited) In Press
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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