Increase of marine juvenile fish abundances in the middle Gironde estuary related to warmer and more saline waters, due to global changes
| العنوان: | Increase of marine juvenile fish abundances in the middle Gironde estuary related to warmer and more saline waters, due to global changes |
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| المؤلفون: | Maja Hjort Larsen, Stéphanie Pasquaud, Henrique N. Cabral, Aurélie Chaalali, Jérémy Lobry, Mélanie Béguer |
| المساهمون: | Ecosystèmes estuariens et poissons migrateurs amphihalins (UR EPBX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), UNIVERSIDADE DE LISBOA PRT, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
| المصدر: | Estuarine, Coastal and Shelf Science Estuarine, Coastal and Shelf Science, Elsevier, 2012, 104-105, pp.46-53. ⟨10.1016/j.ecss.2012.03.021⟩ |
| بيانات النشر: | Elsevier BV, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | 0106 biological sciences, geography, geography.geographical_feature_category, Sprattus sprattus, Ecology, 010604 marine biology & hydrobiology, FRANCE, Estuary, Juvenile fish, GIRONDE ESTUAIRE, Aquatic Science, Biology, Oceanography, biology.organism_classification, 010603 evolutionary biology, 01 natural sciences, Salinity, Fishery, Merlangius merlangus, Engraulis, Abundance (ecology), [SDE]Environmental Sciences, Ecosystem, 14. Life underwater |
| الوصف: | International audience; Estuaries have an essential ecological function for several marine fish species, that use these systems as nurseries. Previous studies in the Gironde estuary have reported an increase in water temperature and an extended seawater intrusion associated to global changes. In this study, we evaluated whether these changes impact the nursery function in the middle part of the system, based on the analyses of long-term data series (1991e2009) collected in that area. Trend analysis, correlations and generalized additive models (GAM) were computed in order to study the influence of water temperature and salinity changes on marine juveniles occurrence/densities. Results showed that densities of all the studied species (i.e. Engraulis encrasicolus, Sprattus sprattus, Dicentrarchus labrax, Solea solea, Argyrosomus regius, Merlangius merlangus) significantly increased over the period considered. Changes in water temperature and seawater intrusion contributed to explain the variability in presence/absence and in densities of the majority of these species. However, the deviance explained by GAM and the relevance of these two explanatory variables differed considerably according to species. For most species, it was suggested that the interaction of these two factors, and their effects on other variables, may explain the increase in abundance in the middle part of the Gironde. The effects of global changes in this estuarine system may favour its nursery function for marine juveniles, but some evidence of effects at a wider scale (community and ecosystem levels) may alter the structure and functioning of this system. |
| تدمد: | 0272-7714 1096-0015 |
| DOI: | 10.1016/j.ecss.2012.03.021 |
| DOI: | 10.1016/j.ecss.2012.03.021⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::496803b07a8a953dd6492bf043d0d1de https://doi.org/10.1016/j.ecss.2012.03.021 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....496803b07a8a953dd6492bf043d0d1de |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 02727714 10960015 |
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| DOI: | 10.1016/j.ecss.2012.03.021 |