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| Registros recuperados: 11 | |
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| Brind'Amour, Anik; Rochet, Marie-joelle; Ordines, Francesc; Hosack, Geoff; Berthele, Olivier; Merigot, Bastien; Carbonara, Pierluigi; Follesa, Maria Cristina; Jadaud, Angelique; Lefkaditou, Evgenia; Maiorano, Porzia; Peristeraki, Panagiota; Mannini, Alessandro; Rabiller, Manuella; Spedicato, Maria Teresa; Tserpes, George; Trenkel, Verena. |
| Functional groups are sets of species that play a similar role in a food web. We defined functional groups of fish species based on their morphological characteristics, while using expert knowledge for invertebrates. We measured 9 morphological traits of 72 fish species, and carried out multivariate analyses to assign fish species to functional groups. The analysis identified 9 trait-based fish functional groups to which were added 3 expert-based invertebrate functional groups. The habitat (position in the water column) and potential diet of each group were identified from the literature. Using the MEDITS bottom trawl survey data collected at 10 to 800 m depth, we calculated relative change in the 12 fish and invertebrate functional group biomasses for 12... |
| Tipo: Text |
Palavras-chave: Morphological traits; Community models; Functional network; Functional groups; Mediterranean Sea; Temporal trends; Fish; Shellfish. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00363/47382/47475.pdf |
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| Trenkel, Verena; Berthele, Olivier; Lorance, Pascal; Bertrand, Jacques; Brind'Amour, Anik; Cochard, Marie-laure; Coppin, Franck; Leaute, Jean-pierre; Mahe, Jean-claude; Morin, Jocelyne; Rochet, Marie-joelle; Salaun, Michele; Souplet, Arnauld; Verin, Yves. |
| Depuis une vingtaine d'années, l'Ifremer organise des campagnes de pêche scientifique en mer du Nord, Manche, Atlantique et Méditerranée concernant les ressources pélagiques, démersales et benthiques. L'objectif prioritaire est de produire des indices d'abondance des principales espèces commerciales. Elles recueillent également des données sur les espèces capturées non commerciales. Les campagnes sont réalisées selon des plans d'échantillonnage standardisés. L'engin de pêche et son gréement, la position des stations, le tri des captures, les prélèvements biologiques suivent des protocoles fixés. Chaque zone étudiée est découpée en fonction de la profondeur, de la latitude ou d'autres critères. L'échantillonnage prévoit un nombre de traits de chalut... |
| Tipo: Text |
Palavras-chave: Populations; Halieutique; Bulletin; Méditerranée; Golfe de Gascogne; Manche; Mer du Nord; France; Pêche; Campagnes à la mer; Atlas; Survey; Mediterranean Sea; Bay of Biscay; English Channel; North Sea; France; Populations; Fishery science; Bulletin; Atlas. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/rapport-6976.pdf |
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| Pasquaud, Stephanie; Brind'Amour, Anik; Berthele, Olivier; Girardin, Michel; Elie, Pierre; Boet, Philippe; Lepage, Mario. |
| In view of the European Union (EU) requirements to diagnose and monitor the ecological status of estuarine ecosystems using fish-based indicators, we assessed the effect of the sampling protocol in meeting these objectives. Using three different sampling surveys, we evaluated the impact of four components, i.e. sampling gear, spatial extent, length of time series and temporal window analysed, on the detection of ecological trends in the Gironde estuary, estimated by different types of fish-based indicator. For each component, temporal trends of several fish-based indicators were analysed and for the final diagnosis these temporal trends were combined. The results showed that sampling gear had significant effects on the assessment of ecological trends, as... |
| Tipo: Text |
Palavras-chave: Protocol effects; Fishing gear; Ecological trend; Fish; Indicators; Estuarine ecosystem. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00049/15976/14533.pdf |
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| Le Goff, Ronan; Drogou, Mickael; Le Ru, Loic; Garren, Francois; Martin, Stephane; Bouche, Ludovic; Le Roy, Didier; Berthele, Olivier. |
| Rapport de la campagne d’échantillonnage réalisée au moyen du chalut GOV « Bargip-NOURDEM » en août 2017 dans l’estuaire de la Seine afin d’y produire l’indice d’abondance 2017 en juvéniles de bar (et de quelques autres espèces d’intérêt commercial). Définition du plan d’échantillonnage applicable à l’avenir en cas de pérennisation d’une campagne annuelle. Campagne réalisée dans le cadre d'un partenariat entre l'Ifremer, le Comité Régional des Pêches Maritimes de Normandie, le Comité Régional des Pêches Maritimes et Elevages Marins des Hauts de France, et les organisations de producteurs OP CME, OP Normandie, OP COBRENORD, OP FROM NORD et OP Pêcheurs de Bretagne. |
| Tipo: Text |
Palavras-chave: Bar européen; Dicentrarchus labrax Nourricerie de l’estuaire de Seine échantillonnage au chalut Indice d’abondance 2017. European Sea Bass Dicentrarchux labrax Nurserie of the Seine estuary 2017 Abundance index trawling net samplings. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00411/52262/53008.pdf |
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| Trenkel, Verena; Lorance, Pascal; Berthele, Olivier; Ferrant, Anthony; Le Piver, David; Rochet, Marie-joelle. |
| The data come from bait experiments that were carried out at three study sites (Meriadzek Terrace, terrace located between the canyon of Belle Île and the canyon of St Nazaire referred to as St Nazaire Terrace, and Belle Île Canyon) on the continental slope of the Bay of Biscay during the VITAL cruise in late August and early September 2002 using the ROV Victor 6000. A full description of the experiments and results can be found in Trenkel and Lorance (2011). The depth range 1100 – 1500 m was investigated in all sites by perpendicular strip transects starting from the deepest point and moving up slope (see full description in Trenkel et al 2004). Bait experiments were carried out at all three sites at regular intervals (every 12 hours) along the... |
| Tipo: Dataset |
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| Ano: 2015 |
URL: http://dx.doi.org/10.17882/39746 |
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| Registros recuperados: 11 | |
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