seanoe:56531 TRENKEL Verena Ifremer, France 2021-05-12 ISO 19115:2003/19139 1.0 Haul duration experimental data set (0 & 30 minutes hauls) 2003 2021-05-12 Battaglia Andre, Biais Gerard, Rochet Marie-Joelle, Trenkel Verena (2003). Haul duration experimental data set (0 & 30 minutes hauls). SEANOE. https://doi.org/10.17882/56531 In 2003 two experiments were carried out in the Bay of Biscay to compare catch numbers obtained in standard research 30-min hauls with those from 0-min hauls to determine the so called end effect. The end effect in trawl catches is defined as the proportion of the fish catch taken during shooting and hauling of the net, a period excluded from what is nominally referred to as haul duration. In 0-hauls the trawl was hauled as soon as the trawl geometry stabilized on the seabed. The trawl used was a beam trawl rigged as twin trawl. Overall 24 hauls were carried out, six 30-min and 18 0-min hauls. Average catch ratios (0-min/30-min hauls) ranged from 0.05 (s.d. 0.06) for sole to 0.34 (s.d. 0.64) for hake. BATTAGLIA Andre Ifremer, France BIAIS Gerard Ifremer, France ROCHET Marie-Joelle Ifremer, France TRENKEL Verena Ifremer, France SEANOE https://www.seanoe.org/data/00454/56531/illustration.gif haul duration trawl end effect catchability 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 /Observational data/in-situ Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY-NC-ND (Creative Commons - Attribution, No commercial usage, No modification) Estimating end effects in trawl catches 2006 Elsevier BATTAGLIA ANDRE TRENKEL VERENA ROCHET MARIE-JOELLE 10.1016/j.icesjms.2006.03.002 10.17600/3050070 10.17600/3050150 oceans -2.5 0.0 45.3 47.2 TEXTE CSV https://www.seanoe.org/data/00454/56531/data/58231.txt WWW:DOWNLOAD-1.0-link--download Read me file describing data format - 1 KB https://www.seanoe.org/data/00454/56531/data/58232.csv WWW:DOWNLOAD-1.0-link--download Processed data Station details for each haul - 3 KB https://www.seanoe.org/data/00454/56531/data/58233.csv WWW:DOWNLOAD-1.0-link--download Quality controlled data Catch by species - 14 KB https://www.seanoe.org/data/00454/56531/data/58234.csv WWW:DOWNLOAD-1.0-link--download Processed data Length measurements by species - 41 KB https://doi.org/10.17882/56531 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00454/56531/ rel-canonical Seanoe beam trawl and temperature sensor