seanoe:100653 data@seanoe.org 2025-10-23 ISO 19115:2003/19139 1.0 ORHAGO beam trawl survey catch data : Bentho-demersal assemblages of the Bay of Biscay (North-eastern Atlantic) from 2007 to present. 2007 2025-10-23 Lecomte Jean Baptiste, Coupeau Yann, Biais Gerard, Pencreac'H-Cornou Anne-Sophie (2007). ORHAGO beam trawl survey catch data : Bentho-demersal assemblages of the Bay of Biscay (North-eastern Atlantic) from 2007 to present. SEANOE. https://doi.org/10.17882/100653 The ORHAGO campaigns (Observation of the benthic aquatic resources of the Golfe de Gascogne) are designed to collect data on the composition, distribution and change in relative abundance of benthic fish fauna on the continental shelf (depth <100m) in November to December on a yearly basis. The ORHAGO survey was initiated in 2007 with the objective of developing a fishery-independent abundance index for flatfish species, with a particular focus on the common sole (Solea solea) of the Bay of Biscay. In accordance with the ICES-agreed gear for flatfish abundance surveys, ORHAGO employs a 4-meter-beam trawl with a chain mat, 50-millimeter mesh in the net, and 40-millimeter mesh in the cod-end. The sampling plan was designed to ensure full coverage of the common sole habitat in the Bay of Biscay during a period (November-December) for which fish behavior and distribution was suitable for obtaining an unbiased abundance index (young fish move offshore when coastal waters become colder and before the concentrations of the spawning season). The sampling design is a systematic sampling with 49 reference stations. The sampling design was validated in 2013 by the ICES Working Group on Beam Trawl Surveys (WGBEAM). Since 2013, the ORHAGO survey has been used to assess the status of the Bay of Biscay common sole stock (WGBIE, Working Group for the Bay of Biscay and the Iberian Waters Ecoregion). LECOMTE Jean Baptiste DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro - Agrocampus Ouest, Nantes, France COUPEAU Yann DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro - Agrocampus Ouest, Lorient, France BIAIS Gerard Laboratoire Ressources halieutiques, IFREMER La Rochelle, BP 7, 17137 L’Houmeau, France PENCREAC'H-CORNOU Anne-Sophie DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro - Agrocampus Ouest, Lorient, France SEANOE https://www.seanoe.org/data/00895/100653/illustration.gif Bay of Biscay Atlantic Bentho-demersal assemblages Demersal fish beam trawl survey Common sole benthic invertebrates WGBEAM WGBIE marine macro-litter exploited species ORHAGO Fisheries and aquaculture Fish ODATIS aggregation parameters and Essential Variable names 2025-07-29 geonetwork.thesaurus.external.theme.NVS.OD1 Fisheries and aquaculture SeaDataNet Parameter Disciplines 2025-07-29 geonetwork.thesaurus.external.parameter.NVS.P08 /Observational data/in-situ Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY-ND (Creative Commons - Attribution, No modification) We do our best to ensure that the data is complete, accurate and useful. However, because the processing required to generate the data is complex, we cannot be liable for omissions or inaccuracies. The data and any related materials contained therein are provided “as is”, without warranty of any kind, either expressed or implied, including but not limited to, fitness for a particular purpose, non-interference, system integration, or non-infringement. The entire risk of use of the data shall be with the user. In case errors or incoherences be detected, please signal them at the following address : harmonie@ifremer.fr 10.13155/109277 10.17895/ices.pub.25382437 10.1016/j.pocean.2023.102969 10.17895/ices.pub.29154206 10.17600/3050040 10.17600/3050070 10.17600/3050150 10.17600/6050110 10.17600/6050240 10.17600/7050060 10.17600/7050150 10.17600/8050120 10.17600/9050100 10.17600/10050090 10.17600/11050070 10.17600/12050090 10.17600/13050090 10.17600/14005300 10.17600/15006600 10.17600/16010500 10.17600/17011300 10.17600/18000594 10.17600/18001044 10.17600/18001084 10.17600/18001598 10.17600/18002005 10.17600/18002511 oceans -4.5 -1.0 43.0 48.5 TEXTE https://www.seanoe.org/data/00895/100653/data/122508.zip WWW:DOWNLOAD-1.0-link--download Quality controlled data ORHAGO - 1 MB https://datras.ices.dk/Data_products/Download/Download_Data_public.aspx WWW:LINK ICES Datras portal https://doi.org/10.13155/109277 WWW:LINK ELFIC : format description https://doi.org/10.17882/100653 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00895/100653/ rel-canonical Seanoe 4m beam trawl