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Auteur Nikolic, N.; Lauretta, M.; Patucca, A.; Morandeau, G. doi  openurl
  Titre (up) Characterization and standardization of the Atlantic albacore French pelagic trawl fishery Type Article scientifique
  Année 2018 Publication Revue Abrégée Aquat. Living Resour.  
  Volume 31 Numéro Pages 31  
  Mots-Clés Albacore; Atlantic; behavior; catch; catch rates; fisheries; habitat; migration; north pacific albacore; ocean; stock; thunnus-alalunga; trawl; tuna  
  Résumé We compiled and analysed logbook data from the French trawl albacore fishery covering the period 1991-2015. The dataset comprised catch and effort data for the French fleet operating in the Bay of Biscay and Celtic Sea, as well as spatiotemporal and gear characteristics. Generalized linear modelling was used to model spatial, seasonal, environmental, and gear covariates of fleet CPUE rates. A long-term index of relative abundance is provided that can be integrated into the stock assessment of North Atlantic albacore. The analysis revealed higher albacore CPUE associated with relatively low sea surface temperature and distinct seasonal effects. The derived abundance trend for the French trawl fishery agreed with the estimated time series of stock abundance from recent assessments.  
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  Langue English Langue du Résumé Titre Original  
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  Volume de collection Numéro de collection Edition  
  ISSN 0990-7440 ISBN Médium  
  Région Expédition Conférence  
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  Numéro d'Appel MARBEC @ alain.herve @ collection 2426  
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Auteur Giannoulaki, M.; Iglesias, M.; Tugores, M.P.; Bonanno, A.; Patti, B.; Felice, A.D.; Leonori, I.; BIGOT, J.-L.; Ticina, V.; Pyrounaki, M.M.; Tsagarakis, K.; Machias, A.; Somarakis, S.; Schismenou, E.; Quinci, E.; Basilone, G.; Cuttitta, A.; Campanella, F.; Miquel, J.; Onate, D.; ROOS, D.; Valavanis, V. url  openurl
  Titre (up) Characterizing the potential habitat of European anchovy Engraulis encrasicolus in the Mediterranean Sea, at different life stages Type Article scientifique
  Année 2013 Publication Revue Abrégée Fisheries Oceanography  
  Volume 22 Numéro 2 Pages 69-89  
  Mots-Clés anchovy; anchovy potential nurseries; habitat suitability modelling; Mediterranean sea; small pelagics  
  Résumé Identification of the potential habitat of European anchovy (Engraulis encrasicolus) at different life stages in relation to environmental conditions is an interesting subject from both ecological and management points of view. For this purpose, acoustic data from different seasons and different parts of the Mediterranean Sea along with satellite environmental and bathymetry data were modelled using generalized additive models. Similarly, egg distribution data from summer ichthyoplankton surveys were used to model potential spawning habitat. Selected models were used to produce maps presenting the probability of anchovy presence (adults, juveniles and eggs) in the entire Mediterranean basin, as a measure of habitat adequacy. Bottom depth and sea surface chlorophyll concentration were the variables found important in all models. Potential anchovy habitats were located over the continental shelf for all life stages examined. An expansion of the potential habitat from the peak spawning (early summer) to the late spawning season (early autumn) was observed. However, the most suitable areas for the presence of anchovy spawners seem to maintain the same size between seasons. Potential juvenile habitats were associated with highly productive inshore waters, being less extended and closer to coast during winter than late autumn. Potential spawning habitat in June and July based on ichthyoplankton surveys overlapped but were wider in extent compared with adult potential habitat from acoustics in the same season. Similarities and dissimilarities between the anchovy habitats as well as comparisons with sardine habitats in the oligotrophic Mediterranean Sea and other ecosystems with higher productivity are discussed.  
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  Volume de collection Numéro de collection Edition  
  ISSN 1054-6006 ISBN Médium  
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  Numéro d'Appel LL @ pixluser @ collection 240  
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Auteur Le Marchand, M.; Hattab, T.; Niquil, N.; Albouy, C.; Le Loc'h, F.; Lasram, F.B.R. url  doi
openurl 
  Titre (up) Climate change in the Bay of Biscay: Changes in spatial biodiversity patterns could be driven by the arrivals of southern species Type Article scientifique
  Année 2020 Publication Revue Abrégée Marine Ecology Progress Series  
  Volume 647 Numéro Pages 17-31  
  Mots-Clés Climate change; Ecological niche model; Habitat model; Hierarchical filters; Species distribution; Species turnover  
  Résumé Under climate change, future species assemblages will be driven by the movements and poleward shift of local species and the arrival of more thermophilic species from lower latitudes. To evaluate the impacts of climate change on marine communities in the Bay of Biscay, we used the hierarchical filters modelling approach. Models integrated 3 vertical depth layers and considered 2 Intergovernmental Panel on Climate Change (IPCC) scenarios (Representative Concentration Pathway, RCP2.6 and RCP8.5) and 2 periods (2041-2050 and 2091-2100) to simulate potential future species distributions. Results predicted potentially suitable future ranges for 163 species as well as future arrivals of non-indigenous southern species. We aggregated these results to map changes in species assemblages. Results revealed that coastal areas would undergo the highest species loss among the Bay of Biscay species, depending on their vertical habitat (benthic, demersal, benthopelagic or pelagic). Benthic and demersal species were projected to experience a westward shift, which would induce a deepening of those species. In contrast, pelagic species were projected to shift northward. The potential ecological niche for half of the studied species, mostly benthic and demersal, was projected to decrease under climate change. In addition, a high rate of southern species arrivals is expected (+28%). Assessment of community composition showed high species replacement within the 0-50 m isobath, driven by the replacement of native species by southern ones. This could lead to a major reorganization of trophic networks and have socio-economic impacts.  
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  Volume de collection Numéro de collection Edition  
  ISSN 0171-8630, 1616-1599 ISBN Médium  
  Région Expédition Conférence  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2814  
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Auteur Morato, T.; Gonzalez-Irusta, J.-M.; Dominguez-Carrio, C.; Wei, C.-L.; Davies, A.; Sweetman, A.K.; Taranto, G.H.; Beazley, L.; Garcia-Alegre, A.; Grehan, A.; Laffargue, P.; Murillo, F.J.; Sacau, M.; Vaz, S.; Kenchington, E.; Arnaud-Haond, S.; Callery, O.; Chimienti, G.; Cordes, E.; Egilsdottir, H.; Freiwald, A.; Gasbarro, R.; Gutierrez-Zarate, C.; Gianni, M.; Gilkinson, K.; Wareham Hayes, V.E.; Hebbeln, D.; Hedges, K.; Henry, L.-A.; Johnson, D.; Koen-Alonso, M.; Lirette, C.; Mastrototaro, F.; Menot, L.; Molodtsova, T.; Duran Munoz, P.; Orejas, C.; Pennino, M.G.; Puerta, P.; Ragnarsson, S. a; Ramiro-Sanchez, B.; Rice, J.; Rivera, J.; Roberts, J.M.; Ross, S.W.; Rueda, J.L.; Sampaio, I.; Snelgrove, P.; Stirling, D.; Treble, M.A.; Urra, J.; Vad, J.; van Oevelen, D.; Watling, L.; Walkusz, W.; Wienberg, C.; Woillez, M.; Levin, L.A.; Carreiro-Silva, M. doi  openurl
  Titre (up) Climate-induced changes in the suitable habitat of cold-water corals and commercially important deep-sea fishes in the North Atlantic Type Article scientifique
  Année 2020 Publication Revue Abrégée Glob. Change Biol.  
  Volume Numéro Pages  
  Mots-Clés calcification rates; climate change; cod gadus-morhua; cold-water corals; deep-sea; envelope models; fisheries; fishes; habitat suitability modelling; lophelia-pertusa; ocean acidification; octocorals; protected areas; scleractinian corals; scleractinians; species distribution models; species distribution models; thermal tolerance; vulnerable marine ecosystems  
  Résumé The deep sea plays a critical role in global climate regulation through uptake and storage of heat and carbon dioxide. However, this regulating service causes warming, acidification and deoxygenation of deep waters, leading to decreased food availability at the seafloor. These changes and their projections are likely to affect productivity, biodiversity and distributions of deep-sea fauna, thereby compromising key ecosystem services. Understanding how climate change can lead to shifts in deep-sea species distributions is critically important in developing management measures. We used environmental niche modelling along with the best available species occurrence data and environmental parameters to model habitat suitability for key cold-water coral and commercially important deep-sea fish species under present-day (1951-2000) environmental conditions and to project changes under severe, high emissions future (2081-2100) climate projections (RCP8.5 scenario) for the North Atlantic Ocean. Our models projected a decrease of 28%-100% in suitable habitat for cold-water corals and a shift in suitable habitat for deep-sea fishes of 2.0 degrees-9.9 degrees towards higher latitudes. The largest reductions in suitable habitat were projected for the scleractinian coral Lophelia pertusa and the octocoral Paragorgia arborea, with declines of at least 79% and 99% respectively. We projected the expansion of suitable habitat by 2100 only for the fishes Helicolenus dactylopterus and Sebastes mentella (20%-30%), mostly through northern latitudinal range expansion. Our results projected limited climate refugia locations in the North Atlantic by 2100 for scleractinian corals (30%-42% of present-day suitable habitat), even smaller refugia locations for the octocorals Acanella arbuscula and Acanthogorgia armata (6%-14%), and almost no refugia for P. arborea. Our results emphasize the need to understand how anticipated climate change will affect the distribution of deep-sea species including commercially important fishes and foundation species, and highlight the importance of identifying and preserving climate refugia for a range of area-based planning and management tools.  
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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 1354-1013 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000514391400001 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2752  
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Auteur Virgili, A.; Authier, M.; Boisseau, O.; Cañadas, A.; Claridge, D.; Cole, T.; Corkeron, P.; Dorémus, G.; David, L.; Di‐Méglio, N.; Dunn, C.; Dunn, T.E.; García‐Barón, I.; Laran, S.; Lauriano, G.; Lewis, M.; Louzao, M.; Mannocci, L.; Martínez‐Cedeira, J.; Palka, D.; Panigada, S.; Pettex, E.; Roberts, J.J.; Ruiz, L.; Saavedra, C.; Santos, M.B.; Canneyt, O.V.; Bonales, J.A.V.; Monestiez, P.; Ridoux, V. url  doi
openurl 
  Titre (up) Combining multiple visual surveys to model the habitat of deep-diving cetaceans at the basin scale Type Article scientifique
  Année 2019 Publication Revue Abrégée Global Ecology and Biogeography  
  Volume 28 Numéro 3 Pages 300-314  
  Mots-Clés beaked whales; data-assembling; deep-diving cetaceans; habitat modelling; kogiids; sperm whales  
  Résumé Aim Deep-diving cetaceans are oceanic species exposed to multiple anthropogenic pressures including high intensity underwater noise, and knowledge of their distribution is crucial to manage their conservation. Due to intrinsic low densities, wide distribution ranges and limited presence at the sea surface, these species are rarely sighted. Pooling data from multiple visual surveys sharing a common line-transect methodology can increase sightings but requires accounting for heterogeneity in protocols and platforms. Location North Atlantic Ocean and Mediterranean Sea. Time period 1998 to 2015. Major taxa Ziphiidae; Physeteriidae; Kogiidae. Methods About 1,240,000 km of pooled effort provided 630 sightings of ziphiids, 836 of physeteriids and 106 of kogiids. For each taxon, we built a hierarchical model to estimate the effective strip width depending on observation conditions and survey types. We then modelled relative densities in a generalized additive modelling framework. Geographical predictions were limited to interpolations identified with a gap analysis of environmental space coverage. Results Deeper areas of the North Atlantic gyre were mostly environmental extrapolation in the predictions, thereby highlighting gaps in sampling across the different surveys. For the three species groups, the highest relative densities were predicted along continental slopes, particularly in the western North Atlantic Ocean where the Gulf Stream creates dynamic frontal zones and eddies. Main conclusions Pooling a large number of surveys provided the first basin-wide models of distribution for deep-diving cetaceans, including several data-deficient taxa, across the North Atlantic Ocean and the Mediterranean Sea. These models can help the conservation of elusive and poorly known marine megafauna.  
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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 MARBEC @ isabelle.vidal-ayouba @ collection 2756  
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