seanoe:39847 data@seanoe.org 2025-02-18 ISO 19115:2003/19139 1.0 Observations of activity, catches, discards and causes of discards on board commercial fishing vessels 2015-11 2025-02-18 Morandeau Gilles (2015). Observations of activity, catches, discards and causes of discards on board commercial fishing vessels. SEANOE. https://doi.org/10.17882/39847 Data were collected from the regional program LOUPE (Observation of the habitat and associated communities in the context of the fisheries of the Capbreton Canyon). It consisted in the observations of two métiers practiced around the canyon. The observations were carried out between July 2011 and April 2013 on coastal boats. Observations and interviews were made on board commercial vessels. The longlines used in the hake fishery are semi-pelagic and are deployed on the edge of the Capbreton Canyon. It is an emblematic and major métier benefiting from a particular regulation as they take advantage of a prohibition of net and trawl fishing on their fishing grounds. Between 8 and 14 costal boats practice this métier during the year and the fleet characteristics are homogeneous. Boats lay between 1,200 and 1,800 hooks per day, baited with frozen pilchard (Sardina pilchardus). Two or three men are on board these vessels. Fishing is mostly practiced in spring and summer but a small number of vessels work all year. Generally, trips last between ten and twelve hours; longline is set before sunrise and retrieved three or four hours later. Hake is the main targeted species; other targets are pollack (Pollachius pollachius), red sea bream (Pagellus bogaraveo) and conger (Conger conger). Netting is a major métier in terms of vessels involved and the number of trips. Crew composition varies and depends on boat length (from one to four men on average). This métier is practiced by 30 to 35 boats all year round, but fleet characteristics are less homogeneous than in the case of longliners . The strategy of these netters operating in the coastal area is based on the use of several types of nets (gillnets and trammel nets) targeting several species, often sold directly to consumers on the docks. Gillnets, consisting of a single mesh, target hake, sea bass and sea bream species (Diplodus spp, Sparus aurata, Litognathus mormyrus), while the trammel nets (three meshes) are used to capture benthic fish, such as common sole, monkfish (Lophius spp), turbot and brill (Scophthalmus rhombus). Generally, trips last less than twelve hours for coastal netters (less than 15 m), which predominate in the sector, and a few days for large netters. On average, the coastal vessels set 6000 to 8000 m. nets daily. MORANDEAU Gilles Ifremer, Laboratoire Ressources Halieutiques Aquitaine RBE HGS, UFR Côte Basque, FED MIRA 4155, F 64600 Anglet, France SEANOE https://www.seanoe.org/data/00287/39847/illustration.gif Fisheries data recording with a ichtyomètre Fisheries and aquaculture Fish ODATIS aggregation parameters and Essential Variable names 2024-09-16 geonetwork.thesaurus.external.theme.NVS.OD1 Fisheries and aquaculture SeaDataNet Parameter Disciplines 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.P08 IR-FOF Research Infrastructure 2024-07-26 geonetwork.thesaurus.local.theme.IR /Observational data/in-situ Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY-NC (Creative Commons - Attribution, No commercial usage) Individual data are confidential; only aggregate data (more than 3 vessels) are diffusible. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Characterizing catches taken by different gears as a step towards evaluating fishing pressure on fish communities 2015 Elsevier FAUCONNET LAURENCE TRENKEL VERENA M. MORANDEAU GILLES CAILL-MILLY NATHALIE ROCHET MARIE-JOELLE 10.1016/j.fishres.2014.11.019 Why do fishermen discard? Distribution and quantification of the causes of discards in the Southern Bay of Biscay passive gear fisheries. 2014 Elsevier Sci Ltd MORANDEAU GILLES MACHER CLAIRE SANCHEZ FLORENCE BRU NOELLE FAUCONNET LAURENCE CAILL-MILLY NATHALIE 10.1016/j.marpol.2014.02.022 oceans -2.680664 -1.142578 43.182596 44.372408 PDF CSV https://www.seanoe.org/data/00287/39847/data/38376.pdf WWW:DOWNLOAD-1.0-link--download Texte Data description - 40 KB https://www.seanoe.org/data/00287/39847/data/38380.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Landing - 364 KB https://www.seanoe.org/data/00287/39847/data/38381.csv WWW:DOWNLOAD-1.0-link--download Processed data Characteristics of fishing operations - 12 KB https://www.seanoe.org/data/00287/39847/data/38382.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Discards - 4 KB https://www.seanoe.org/data/00287/39847/data/38383.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Others discards - 4 KB https://www.seanoe.org/data/00287/39847/data/38384.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Trip economic parameters - 3 KB https://www.seanoe.org/data/00287/39847/data/38386.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Registration criteria for discards - 1020 bytes https://www.seanoe.org/data/00287/39847/data/38387.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Characteristics for boats - 672 bytes https://doi.org/10.17882/39847 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00287/39847/ rel-canonical Seanoe