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Auteur (up) Garavelli, L.; Grüss, A.; Grote, B.; Chang, N.; Smith, M.; Verley, P.; Stenevik, E.K.; Kaplan, D.; Lett, C. url  doi
openurl 
  Titre Modeling the dispersal of Cape hake ichthyoplankton Type Article scientifique
  Année 2012 Publication Revue Abrégée Journal of Plankton Research  
  Volume 34 Numéro 8 Pages 655-669  
  Mots-Clés Abondance; Distribution Spatiale; Larve; Migration Reproductrice; Modele; Poisson Marin  
  Résumé  
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  Editeur Lieu de Publication Éditeur  
  Langue Langue du Résumé Titre Original  
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  Volume de collection Numéro de collection Edition  
  ISSN 0142-7873 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel LL @ pixluser @ collection 189  
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Auteur (up) Garcia-Ruiz, C.; Hidalgo, M.; Carpentieri, P.; Fernandez-Arcaya, U.; Gaudio, P.; Gonzalez, M.; Jadaud, A.; Mulas, A.; Peristeraki, P.; Luis Rueda, J.; Vitale, S.; D'Onghia, G. doi  openurl
  Titre Spatio-temporal patterns of macrourid fish species in the northern Mediterranean Sea Type Article scientifique
  Année 2019 Publication Revue Abrégée Sci. Mar.  
  Volume 83 Numéro Pages 117-127  
  Mots-Clés abundance; assemblages; bathyal; bathymetric distribution; deep-sea; distributions; geographic distribution; ionian sea; macrourids; Mediterranean; megafauna; population-structure; spatio-temporal trends; trawl survey; trophic relationships; upper slope; western  
  Résumé The present study describes for the first time the spatial distribution of five macrourid species throughout the Mediterranean Sea and analyses depth, geographical and time-related trends regarding their abundance, biomass and mean fish weight. The data were collected as part of the MEDITS annual bottom trawl survey carried out by several European Mediterranean countries from 1994 to 2015, using the same standardized gear and sampling protocol. The most represented species in terms of abundance and biomass was Coelorinchus caelorhincus. The bathymetric trend was different for each species. The shallowest occurring species was C. caelorhincus, followed by Hymenocephalus italicus and Nezumia sclerorhynchus, while Nezumia aequalis and Trachyrincus scabrus were the deepest. Overall, the mean weight of all the species increased with depth. C. caelorhincus and H italicus occurred in the entire study area: the first species showed relatively high catches in most areas, while the second was more abundant in the central and easternmost areas. N. aequalis and T. scabrus were mainly reported in the western basin, and N. sclerorhynchus in the central-eastern areas of the Mediterranean. An increasing inter-annual trend in abundance was only detected for C. caelorhincus and N. sclerorhynchus, while variable fluctuations were observed in the other species.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0214-8358 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000504829900009 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2701  
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Auteur (up) Genovesi, B.; Berrebi, P.; Nagai, S.; Reynaud, N.; Wang, J.; Masseret, E. url  doi
openurl 
  Titre Geographic structure evidenced in the toxic dinoflagellate Alexandrium pacificum Litaker (A. catenella – group IV (Whedon & Kofoid) Balech) along Japanese and Chinese coastal waters Type Article scientifique
  Année 2015 Publication Revue Abrégée Marine Pollution Bulletin  
  Volume 98 Numéro 1–2 Pages 95-105  
  Mots-Clés Alexandrium pacificum (A. catenella – group IV); Harmful algal blooms; Invasive species distribution; Microsatellites markers; Temperate Asian coasts; Toxic dinoflagellate  
  Résumé Abstract

The intra-specific diversity and genetic structure within the Alexandrium pacificum Litaker (A. catenella – Group IV) populations along the Temperate Asian coasts, were studied among individuals isolated from Japan to China. The UPGMA dendrogram and FCA revealed the existence of 3 clusters. Assignment analysis suggested the occurrence of gene flows between the Japanese Pacific coast (cluster-1) and the Chinese Zhejiang coast (cluster-2). Human transportations are suspected to explain the lack of genetic difference between several pairs of distant Japanese samples, hardly explained by a natural dispersal mechanism. The genetic isolation of the population established in the Sea of Japan (cluster-3) suggested the existence of a strong ecological and geographical barrier. Along the Pacific coasts, the South–North current allows limited exchanges between Chinese and Japanese populations. The relationships between Temperate Asian and Mediterranean individuals suggested different scenario of large-scale dispersal mechanisms.
 
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  ISSN 0025-326x ISBN Médium  
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  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ alain.herve @ collection 1352  
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Auteur (up) Gruss, A.; Yemane, D.; Fairweather, T.P. doi  openurl
  Titre Exploring the spatial distribution patterns of South African Cape hakes using generalised additive models Type Article scientifique
  Année 2016 Publication Revue Abrégée Afr. J. Mar. Sci.  
  Volume 38 Numéro 3 Pages 395-409  
  Mots-Clés abundance; benguela ecosystem; distribution maps; fish; Merluccius capensis; Merluccius paradoxus; prediction; South Africa; spatial distributions; species distributions  
  Résumé We developed delta generalised additive models (GAMs) to predict the spatial distribution of different size classes of South African hakes, Merluccius capensis and M. paradoxus, using demersal trawl survey data and geographical (latitude and longitude) and environmental features (depth, temperature, bottom dissolved oxygen and sediment type). Our approach consists of fitting, for each hake size class, two independent models, a binomial GAM and a quasi-Poisson GAM, whose predictions are then combined using the delta method. Delta GAMs were validated using an iterative cross-validation procedure, and their predictions were then employed to produce distribution maps for the southern Benguela. Delta GAM predictions confirmed existing knowledge about the spatial distribution patterns of South African hakes, and brought new insights into the factors influencing the presence/absence and abundance of these species. Our GAM approach can be used to produce distribution maps for spatially explicit ecosystem models of the southern Benguela in a rigorous and objective way. Ecosystem models are critical features of the ecosystem approach to fisheries, and distribution maps constructed using our GAM approach will enable a reliable allocation of species biomasses in spatially explicit ecosystem models, which will increase trust in the spatial overlaps and, therefore, the trophic interactions predicted by these models.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 1814-232x ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ alain.herve @ collection 1686  
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Auteur (up) Hattab, T.; Albouy, C.; Lasram, F.B.R.; Somot, S.; Le Loc'h, F.; Leprieur, F. url  doi
openurl 
  Titre Towards a better understanding of potential impacts of climate change on marine species distribution: a multiscale modelling approach Type Article scientifique
  Année 2014 Publication Revue Abrégée Global Ecology and Biogeography  
  Volume 23 Numéro 12 Pages 1417-1429  
  Mots-Clés climate change; exploited species; habitat loss; hierarchical filtering; Mediterranean Sea; spatial scale; species distribution modelling  
  Résumé Aim In this paper, we applied the concept of ‘hierarchical filters’ in community ecology to model marine species distribution at nested spatial scales. Location Global, Mediterranean Sea and the Gulf of Gabes (Tunisia). Methods We combined the predictions of bioclimatic envelope models (BEMs) and habitat models to assess the current distribution of 20 exploited marine species in the Gulf of Gabes. BEMs were first built at a global extent to account for the full range of climatic conditions encountered by a given species. Habitat models were then built using fine-grained habitat variables at the scale of the Gulf of Gabes. We also used this hierarchical filtering approach to project the future distribution of these species under both climate change (the A2 scenario implemented with the Mediterranean climatic model NEMOMED8) and habitat loss (the loss of Posidonia oceanica meadows) scenarios. Results The hierarchical filtering approach predicted current species geographical ranges to be on average 56% smaller than those predicted using the BEMs alone. This pattern was also observed under the climate change scenario. Combining the habitat loss and climate change scenarios indicated that the magnitude of range shifts due to climate change was larger than from the loss of P. oceanica meadows. Main conclusions Our findings emphasize that BEMs may overestimate current and future ranges of marine species if species–habitat relationships are not also considered. A hierarchical filtering approach that accounts for fine-grained habitat variables limits the uncertainty associated with model-based recommendations, thus ensuring their outputs remain applicable within the context of marine resource management.  
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  Auteur institutionnel Thèse  
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  Langue en Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 1466-8238 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel LL @ pixluser @ collection 391  
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