|
|
|
| Registros recuperados: 202 | |
|
| |
|
|
| Quero, Jean-claude; Spitz, J; Vayne, Jean-jacques. |
| During 2002, along the French coasts, three living specimens of Regalecus glesne are recorded, one of them at Cap Ferret, first record in the Bay of Biscay, two others in the Mediterranean sea between Marseille and Cassis. Among the trawl catches in the Bay of Biscay by N/O "Thalassa", we have observed two specimens of Chlorophthalmus agassizi, one of Callionymus reticulatus recorded for the first time along the Poitou-Charentes coasts, four of Mentodus rostratus and one of Photostylus pycnoptcrus. NOT CONTROLLED OCR |
| Tipo: Text |
Palavras-chave: Poitou Charentes coasts; Bay of Biscay; Photostylus pycnopterus; Mentodus rostratus; Callionymus reticulatus; Chlorophthalmus agassizi; Regalecus glesne; First record; Côtes de Poitou Charentes; Golfe de Gascogne; Photostylus pycnopterus; Mentodus rostratus; Callionymus reticulatus; Chlorophthalmus agassizi; Regalecus glesne; 1er signalement. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-3659.pdf |
| |
|
|
| Quero, Jean-claude; Spitz, J; Vayne, Jean-jacques. |
| One species, fished in 1999 in the Bay of Biscay, determinated during 2001 according to two photographs, Aristostomias tittmanni, is recorded for the first time in the European Atlantic. Six other species, five fished with a pelagic trawl, Bathylagichthys greyae, Melanostomias bartonbeani, Macroparalepis affinis, Lobianchia gemellarii and Melanonus zugmayeri, one fished with a bottom trawl Ophidion barbatum, were recorded for the first time in tbe Bay of Biscay. The pelagic ichtyological fauna about -500 m, -1000m and -1500 m depth has changed between 1966 to 1968 and 2001 with a decrease of temperate cold affinities species, mostly Benthosema glaciale, and an increase of temperate warm affinities species, mostly Ceratoscopelus maderensis. NOT CONTROLLED OCR |
| Tipo: Text |
Palavras-chave: Mesopelagic ichthyological fauna; Changes; Bay of Biscay; Ophidion barbatum; Melanonus zugmayeri; Lobianchia gemellarii; Macroparalepis affinis; Melanostomias bartonbeani; Bathylagichthys greyae; European Atlantic; Aristostomias tittmanni; First record; Faune ichtyologique mésopélagique; Modifications; Golfe de Gascogne; Ophidion barbatum; Melanonus zugmayeri; Lobianchia gemellarii; Macroparalepis affinis; Melanostomias bartonbeani; Bathylagichthys greyae; Atlantique européen; Aristostomias tittmanni; 1er signalement. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-3651.pdf |
| |
|
| |
|
|
| Kopp, Dorothee; Robert, Marianne; Chouvelon, Tiphaine; Mehault, Sonia. |
| For the ecosystem approach to fisheries management, understanding population dynamics and ecosystem resilience in response to the landing obligation acted by the reform of the European Common Fishery Policy (CFP) is currently an important avenue of research. This study attempts to assess the impact of the new CFP on marine food webs. Total carbon and nitrogen loss induced by a discard ban were estimated for the ecosystem of the Bay of Biscay based on French At-Sea Observer data and carbon and nitrogen content of discarded fish. Changes in predator diets were estimated by comparing two Bayesian mixing models, one mimicking the current situation and the second the application of the new CFP (removing the discarded species that would be landed from the... |
| Tipo: Text |
Palavras-chave: Fishery discards; Discard ban; Bay of Biscay; Organic input; Resource use. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00308/41895/41229.pdf |
| |
|
|
| Dessier, Aurelie; Dupuy, Christine; Kerric, Anais; Mornet, Francoise; Authier, Matthieu; Bustamante, Paco; Spitz, Jerome. |
| To explore some aspects of mesozooplankton functional diversity, this study quantified energy density during the springtime in the Bay of Biscay both between different species and between different size-classes. Energy densities of copepod species (Centropages typicus, Anomalocera patersoni, Calanus helgolandicus, and Labidocera wollastoni), as well as anchovy eggs (Engraulis encrasicolus) ranged from 0.5 to 6.7 kJ/g wet weight (ww). Considering size-classes, energy densities varied from 0.74 to 1.26 kJ/g ww. Energy density of C. helgolandicus exhibited a spatial pattern with the highest values in the plume of the Gironde estuary. In contrast, no spatial pattern of energy density has been detected considering size-classes. Our results showed that the... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Profitability; Copepods; Prey-predator relationship; Fisheries. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00407/51835/52434.pdf |
| |
|
|
| Masse, Jacques. |
| Afler a short review of acoustic principles, methodology and purposes of accustic surveys are described and some examples given. IFREMER instrumentation, strategy and calculations used during echo sur veys are described in details and criticized. Five acouslic sur veys carried o t in the Bay of Biscay between 1983 and 1987 show that several species are generally mixed , and lheir identification is very oflen biased by behaviour phenomena. A new way of classi fying echotraces and interpretating data has been applied to these surveys. The results are summarized in tables and maps. Whenever multispecies structures are concerned, it seems at present impossible to assess absolute biomasses based on acoustic survey method. ln such a situation, acoustic surveys... |
| Tipo: Text |
Palavras-chave: Echo-intégration; Golfe de Gascogne; Petits pélagiques; Comportement; Evaluation; Acoutic; Surveys; Bay of Biscay; Pelagic fishes; Behaviour; Assessment. |
| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00455/56654/58395.pdf |
| |
|
| |
|
|
| Leseur, Floriane. |
| With the constant rising of the human population, it is essential to assess and manage the exploitation of the marine species for human consumption such as the anchovy of Bay of Biscay. Thanks to the PELGAS annual surveys, stocks of each species are estimated (biomass, repartition) and studies are undertaken to improve our knowledge about these species. Allozymic studies realized on the anchovy allowed to find a correlation between 2 alleles of the locus IDH and the habitat (depth). This allozyme has a key role in Krebs’ cycle,being speed limiting.. It enables to tolerate variations of temperature and dissolved oxygen. It would be interesting to do new research on variations in the anchovy’s environment and its migrations. |
| Tipo: Text |
Palavras-chave: Anchois; Golfe de Gascogne; Allozyme; Locus; Allèle; Adaptation; Anchovy; Bay of Biscay; Allozyme; Locus; Allele; Adaptation. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00342/45336/44798.pdf |
| |
|
|
| Gohin, Francis; Loyer, S; Lunven, Michel; Labry, Claire; Froidefond, J; Delmas, Daniel; Huret, Martin; Herbland, Alain. |
| In biological modelling of the coastal phytoplankton dynamics, the light attenuation coefficient is often expressed as a function of the concentrations of chlorophyll and mineral suspended particulate matter (SPM). In order to estimate the relationship between these parameters over the continental shelf of the northern Bay of Biscay, a set of in situ data has been gathered for the period 1998-2003 when SeaWiFS imagery is available. These data comprise surface measurements of the concentrations of total SPM, chlorophyll, and irradiance profiles from which is derived the attenuation coefficient of the photosynthetically available radiation, K-PAR. The performance of the IFREMER look-up table used to retrieve the chlorophyll concentration from the SeaWiFS... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; SeaWiFS; Sediment; Chlorophyll; Ocean color. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-1172.pdf |
| |
|
| |
|
| |
|
|
| Poulard, Jean-charles; Trenkel, Verena. |
| Survey indices play an important role in stock assessments as they provide information on stock trends. In certain cases large interannual variations have been observed which are unlikely to reflect true underlying stock changes but are rather outliers. When survey indices for several species appear to be outliers for the same year, the suspicion is raised that something happened during the survey of that year. This is called a year-effect in survey catches. To study the potential year-effect in survey catches for the French autumn groundfish survey taking place in the Bay of Biscay, several indicators for survey design and wind conditions were derived as explanatory variables and Principal Component Analysis was used to study the relationship between... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Survey conditions; Time trends; Catchability; Survey index. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2690.pdf |
| |
|
|
| Feist, S. W.; Stentiford, G. D.; Kent, Maxxie; Ribeiro Santos, Ana; Lorance, Pascal. |
| The deep-sea environment is a sink for a wide variety of contaminants including heavy metals and organic compounds of anthropogenic origin. Life history traits of many deep-water fish species including longevity and high trophic position may predispose them to contaminant exposure and subsequent induction of pathological changes, including tumour formation. The lack of evidence for this hypothesis prompted this investigation in order to provide data on the presence of pathological changes in the liver and gonads of several deep-water fish species. Fish were obtained from the north east region of the Bay of Biscay (north east Atlantic Ocean) by trawling at depths between 700 to 1400m. Liver and gonad samples were collected on board ship and fixed for... |
| Tipo: Text |
Palavras-chave: Histopathology; Disease; Bay of Biscay; Neoplasia; Ovotestis; Deep-sea fish. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00252/36370/34910.pdf |
| |
|
|
| Doray, Mathieu; Petitgas, Pierre; Huret, Martin; Duhamel, Erwan; Romagnan, Jean-baptiste; Authier, Matthieu; Dupuy, Christine; Spitz, Jerome. |
| This paper is a practical contribution to two important debates raised by the implementation of marine ecosystem based management: (i) which ecosystem data can be provided by a fisheries survey optimised for ecosystem monitoring; and (ii) how to combine/select potential indicators to derive useful information on marine ecosystem status and dynamics? A suite of 143 potential indicators, including spatial indices, representing small pelagic fish and their biotic and abiotic environments are presented. Indicators were routinely derived from the PELGAS integrated ecosystem survey conducted in spring in the Bay of Biscay (BoB). The general patterns over time in this suite of 5–16 years, non-stationary time series are characterised using a methodology based on... |
| Tipo: Text |
Palavras-chave: Min/max autocorrelation factors; Time correlation; Survey-based indicators; Marine Strategy Framework Directive; Ecosystem variability; Bay of Biscay; Pelagic ecosystem. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00414/52552/53443.pdf |
| |
|
|
| Toucanne, Samuel; Zaragosi, S; Bourillet, Jean-francois; Naughton, F; Cremer, M; Eynaud, F; Dennielou, Bernard. |
| High-resolution sedimentological and micropaleontological studies of several deep-sea cores retrieved from the levees of the Celtic and Armorican turbidite systems (Bay of Biscay - North Atlantic Ocean) allow the detection of the major oscillations of the British-Irish Ice Sheet (BIIS) and 'Fleuve Manche' palaeoriver discharges over the last 30,000 years, which were mainly triggered by climate changes. Between 30 and 20 cal ka, the turbiditic activity on the Celtic-Annorican margin was weak, contrasting with previous stratigraphic models which predicted a substantial increase of sediment supply during low sea-level stands. This low turbidite deposit frequency was most likely the result of a weak activity of the 'Fleuve Manche' palaeoriver and/or of a... |
| Tipo: Text |
Palavras-chave: Turbidites; Heinrich events; LGM; Last deglaciation; Palaeoriver; Fleuve Manche; British irish ice sheet; Bay of Biscay. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3729.pdf |
| |
|
|
| Leaute, Jean-pierre; Caill-milly, Nathalie; Lissardy, Muriel; Bru, Noelle; Dutertre, Marie-adele; Saguet, Cassandre. |
| The stocks of whiting (Merlangius merlangus), pollack (Pollachius pollachius) and striped red mullet (Mullus surmuletus), are considered by ICES as Data Limited Stocks (DLS) for the Bay of Biscay areas, those bordering the Iberian Peninsula as well as the Celtic Sea for red mullet. In the case of insufficient data for an analytical assessment, ICES has recommended, for 2013 and 2014, to precautionarily reduce landings by 20 % compared to the period 2009-2011 for these 3 stocks. In order to improve knowledge to fill the gaps in the status of these stocks, and to extract them from the DLS category, the ROMELIGO project has: i) analyzed available data on both catches and professional fishing activity, Captures per Unit of Effort (CPUE) to identify reference... |
| Tipo: Text |
Palavras-chave: Merlan; Lieu jaune; Rouget barbet de roche; Golfe de Gascogne; CPUE; Flottille de pêche; Paramètres biologiques; Whiting; Pollack; Striped red mullet; Bay of Biscay; CPUE; Fishing fleet; Biological parameters. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00440/55126/56584.pdf |
| |
|
| |
|
| |
|
|
| Desaunay, Yves; Guerault, Daniel; Le Pape, Olivier; Poulard, Jean-charles. |
| Several works have demonstrated trends in the distribution of fish species relative to global warming. This study investigated whether similar trends have occurred for selected flatfish species on the continental shelf of the Bay of Biscay. These species were used as indicators and changes in their Populations were studied in a coastal nursery ground,where flatfish juveniles are concentrated as well as on the entire shelf. Previous studies analysing changes in sea surface temperature for the continental shelf indicate that winter warming occurred in the 1980s and 1990s. Sixteen autumn cruises conducted since 1981 in the Bay of Vilaine nursery area and I I autumn cruises since 1987 over the entire shelf provided data on a nearly annual basis for the... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Ocean warming; Spatial distribution; Flatfish. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3962.pdf |
| |
| Registros recuperados: 202 | |
|
|
|
