Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta
International audience Understanding spatio-temporal dynamics of glass eel recruitment is necessary to characterize eel population status and the stock of future elvers. Despite numerous studies that have characterized recruitment across Europe, multiple systems along the Mediterranean coasts need a...
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Online Access: | https://hal.inrae.fr/hal-03738744 https://doi.org/10.1093/icesjms/fsac122 |
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ftccsdartic:oai:HAL:hal-03738744v1 2023-05-15T13:27:54+02:00 Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta Bouchard, Colin Drouineau, Hilaire Lambert, Patrick Boutron, Olivier Nicolas, Delphine Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP) Université de Pau et des Pays de l'Adour (UPPA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecosystèmes aquatiques et changements globaux (UR EABX) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Institut de recherche de la Tour du Valat 2022-07-26 https://hal.inrae.fr/hal-03738744 https://doi.org/10.1093/icesjms/fsac122 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/icesjms/fsac122 hal-03738744 https://hal.inrae.fr/hal-03738744 doi:10.1093/icesjms/fsac122 WOS: 000821723700001 ISSN: 1054-3139 EISSN: 1095-9289 ICES Journal of Marine Science https://hal.inrae.fr/hal-03738744 ICES Journal of Marine Science, Oxford University Press (OUP), 2022, 79 (6), pp.1874-1887. ⟨10.1093/icesjms/fsac122⟩ Anguilla anguilla Dirichlet distribution glass eel Hierarchical Bayesian Model population dynamics time-series [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1093/icesjms/fsac122 2022-11-13T00:03:58Z International audience Understanding spatio-temporal dynamics of glass eel recruitment is necessary to characterize eel population status and the stock of future elvers. Despite numerous studies that have characterized recruitment across Europe, multiple systems along the Mediterranean coasts need a deeper look. We built a Bayesian State-Space Model to investigate the temporal variations in glass eel recruitment in the Rhône delta (France). The model was suited to address the spatial heterogeneity due to the complexity of this system constituted by numerous entrance pathways. Over 13 years, we found inter-annual variations without a particular trend. Here, an overall migration peak occurred in February-March for the system, but substantial spatial variations in the resulting recruitment were visible. Spatial variations in the inter-annual dynamics and migration peak pointed out the necessity to account for spatial heterogeneity in the dynamics of glass eel recruitment. The highlighted inter-annual variations are consistent with analysis of coincident time-series in other sites in Europe (e.g. WGEEL), and the migration peak's timing is similar to peaks observed in other estuaries. Spatial variations in the migration peak suggest a potential effect of local environment conditions on the recruitment. Our model provided a suitable approach to investigate temporal variations while accounting for spatial heterogeneity. Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) ICES Journal of Marine Science 79 6 1874 1887 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Anguilla anguilla Dirichlet distribution glass eel Hierarchical Bayesian Model population dynamics time-series [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
Anguilla anguilla Dirichlet distribution glass eel Hierarchical Bayesian Model population dynamics time-series [SDV.EE]Life Sciences [q-bio]/Ecology environment Bouchard, Colin Drouineau, Hilaire Lambert, Patrick Boutron, Olivier Nicolas, Delphine Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
topic_facet |
Anguilla anguilla Dirichlet distribution glass eel Hierarchical Bayesian Model population dynamics time-series [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience Understanding spatio-temporal dynamics of glass eel recruitment is necessary to characterize eel population status and the stock of future elvers. Despite numerous studies that have characterized recruitment across Europe, multiple systems along the Mediterranean coasts need a deeper look. We built a Bayesian State-Space Model to investigate the temporal variations in glass eel recruitment in the Rhône delta (France). The model was suited to address the spatial heterogeneity due to the complexity of this system constituted by numerous entrance pathways. Over 13 years, we found inter-annual variations without a particular trend. Here, an overall migration peak occurred in February-March for the system, but substantial spatial variations in the resulting recruitment were visible. Spatial variations in the inter-annual dynamics and migration peak pointed out the necessity to account for spatial heterogeneity in the dynamics of glass eel recruitment. The highlighted inter-annual variations are consistent with analysis of coincident time-series in other sites in Europe (e.g. WGEEL), and the migration peak's timing is similar to peaks observed in other estuaries. Spatial variations in the migration peak suggest a potential effect of local environment conditions on the recruitment. Our model provided a suitable approach to investigate temporal variations while accounting for spatial heterogeneity. |
author2 |
Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP) Université de Pau et des Pays de l'Adour (UPPA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecosystèmes aquatiques et changements globaux (UR EABX) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Institut de recherche de la Tour du Valat |
format |
Article in Journal/Newspaper |
author |
Bouchard, Colin Drouineau, Hilaire Lambert, Patrick Boutron, Olivier Nicolas, Delphine |
author_facet |
Bouchard, Colin Drouineau, Hilaire Lambert, Patrick Boutron, Olivier Nicolas, Delphine |
author_sort |
Bouchard, Colin |
title |
Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
title_short |
Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
title_full |
Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
title_fullStr |
Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
title_full_unstemmed |
Spatio-temporal variations in glass eel recruitment at the entrance pathways of a Mediterranean delta |
title_sort |
spatio-temporal variations in glass eel recruitment at the entrance pathways of a mediterranean delta |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.inrae.fr/hal-03738744 https://doi.org/10.1093/icesjms/fsac122 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 1054-3139 EISSN: 1095-9289 ICES Journal of Marine Science https://hal.inrae.fr/hal-03738744 ICES Journal of Marine Science, Oxford University Press (OUP), 2022, 79 (6), pp.1874-1887. ⟨10.1093/icesjms/fsac122⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/icesjms/fsac122 hal-03738744 https://hal.inrae.fr/hal-03738744 doi:10.1093/icesjms/fsac122 WOS: 000821723700001 |
op_doi |
https://doi.org/10.1093/icesjms/fsac122 |
container_title |
ICES Journal of Marine Science |
container_volume |
79 |
container_issue |
6 |
container_start_page |
1874 |
op_container_end_page |
1887 |
_version_ |
1766401058366554112 |