| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Meiofauna communities’ response to an anthropogenic pressure: The case study of green macroalgal bloom on sandy beach in Brittany
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| Autores: |
Baldrighi, Elisa
Grall, Jacques
Quillien, Nolwenn
Carriço, Rita
Verdon, Valentin
Zeppilli, Daniela
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| Data: |
2019-10
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| Ano: |
2019
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| Palavras-chave: |
Meiofauna
Macroalgal bloom
Sandy beach
Nematodes
Brittany
Anthropogenic impact
Ulva spp
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| Resumo: |
Open sandy beaches support key ecological functions and a distinctive biodiversity, but are threatened by an increasing anthropogenic pressure. Among these threats is the occurrence of green tides of Ulva spp., expression of the eutrophication phenomenon. Our study aimed at determining the impact of green macroalgal accumulations on benthic meiofauna inhabiting two macrotidal sandy beaches of Brittany: Saint Nic (impacted) and Anse de Dinan (unimpacted). The presence of Ulva enhanced total meiofaunal abundance and nematode functional diversity when compared to a state free from macroalgal mats. The stranded Ulva supported high values of meiofaunal β-diversity as well. This unexpected response was likely due to the highly dynamic nature of open sandy beaches that prevents O2 depletion within sediments. Natural seasonal changes in meiofaunal biomass and composition were also evident at both beaches and changes in environmental features, apart from eutrophication alone, do drive the variability in meiofaunal biomass and nematodes diversity.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00509/62069/66249.pdf
DOI:10.1016/j.ecss.2019.106326
https://archimer.ifremer.fr/doc/00509/62069/
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| Editor: |
Elsevier BV
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| Formato: |
application/pdf
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| Fonte: |
Estuarine Coastal And Shelf Science (0272-7714) (Elsevier BV), 2019-10 , Vol. 227 , P. 106326 (14p.)
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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