Brehmer Patrice auteur aut IRD Laugier T. auteur aut IRD Kantoussan J. auteur aut IRD Galgani F. auteur aut IRD Mouillot D. auteur aut IRD text journalArticle eng text/pdf born digital access Ensuring the sustainability of fish resources necessitates understanding their interaction with coastal habitats, which is becoming ever more challenging in the context of ever increasing anthropogenic pressures. The ability of coastal lagoons, exposed to major sources of disturbance, to provide resources and suitable habitats for growth and survival of juvenile fish is especially important. We analysed three lagoons with different ecological statuses and habitat quality on the basis of their eutrophication and ecotoxicity (Trix test) levels. Fish abundances were sampled using fishing and horizontal beaming acoustic surveys with the same protocols in the same year. The relative abundance of Anguilla anguilla, Dicentrarchus labrax or the Mugilidae group was not an indicator of habitat quality, whereas Atherina boyeri and Sparus aurata appeared to be more sensitive to habitat quality. Fish abundance was higher in the two lagoons with high eutrophication and ecotoxicity levels than in the less impacted lagoon, while fish sizes were significantly higher in the two most severely impacted lagoons. This leads us to suggest low habitat quality may increase fish growth rate (by the mean of a cascading effect), but may reduce lagoon juvenile abundance by increasing larval mortality. Such a hypothesis needs to be further validated using greater investigations which take into account more influences on fish growth and recruitment in such variable environments under complex multi-stressor conditions. specialized fish shallow water ecotoxicity lagoon habitat quality amphidromous 036 038 126 1-6 2013 0272-7714 https://www.documentation.ird.fr/hor/fdi:010060451 10.1016/j.ecss.2013.03.011 0272-7714 [F B010060451] https://www.documentation.ird.fr/hor/fdi:010060451 https://www.documentation.ird.fr/intranet/publi/2013/07/010060451.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2013-07-29 2024-01-08 fdi:010060451 fre