CEFAS29a4f7ba-bf73-4fc0-a46d-fff918085a4b English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2021-12-01T01:24:27 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Gillnet retrieval survey 2006/07 - Fisheries Science Partnership FSP Gill net retrieval survey 2014-12-05 publication 2021-12-01 revision 2013-10-08 creation CEFAS2916 https://data.cefas.co.uk Gillnet retrieval survey carried out on fishing grounds to the south-west of Ireland, from 4th to 24th July 2006, using the commercial trawler FV Regina Ponti, to examine the quantity and mesh size of lost and discarded gillnets in the anglerfish and shark fisheries in two areas of Porcupine Bank. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Biota abundance, biomass and diversity SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Water column SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Adherance to the Cefas Data access policy required. Terms and conditions of OGL – Open Government Licence apply. `http://www.nationalarchives.gov.uk/doc/open-government-licence/`_ .. _`http://www.nationalarchives.gov.uk/doc/open-government-licence/`: http://www.nationalarchives.gov.uk/doc/open-government-licence/ English biota -17.00 -5.00 46.50 58.25 2006-07-04 2006-07-24 Binary Unknown https://data.cefas.co.uk/view/2916 Cefas Data Portal download The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: Binary download. dataset INSPIRE Data Specification on Species Distribution – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification A Fisheries Science Partnership survey was carried out in July 2006 to examine the quantity and mesh size of lost and discarded gillnets in the anglerfish and shark fisheries in two areas of Porcupine Bank. Information from the DEEPNET project suggests that lost and discarded gillnets from these fisheries to the west of the British Isles may continue to 'ghost fish' for long periods due to a slow rate of bio-fouling. The FV Regina Ponti was chartered to carry out a gillnet retrieval survey using a single grapnel. The survey area was chosen based on information on the distribution of fishing activity from VMS data. Retrieval tows along transects were stratified by depth, the two strata corresponding to the depth range of the anglerfish (400–800 m) and the deep-water shark (800–1200 m) fisheries. Mesh size was used to further attribute retrieved gear to fishery. The size and composition of any ghost catches taken by retrieved nets were recorded. Weather conditions throughout the trip were generally good. The targeted transects to the west of the Porcupine Bank were fully completed and those to the SW of Porcupine Bank were 91% completed. No complete fleets of gillnets were retrieved. Only parts of gillnets were retrieved and these comprised small portions of net a few square metres in area, headlines with some mesh, lead-lines with some mesh or occasionally both headline and lead-line with a portion of mesh. The majority of the mesh was either not present or was rarely recovered. Most recovered nets had a mesh size of between 270 and 290 mm, suggesting they were from the anglerfish fishery. Compared with the results of the 2005 FSP retrieval survey at Rosemary Bank, there was evidence of much greater quantities of gillnets at Porcupine Bank. This suggests that the distribution of lost and discarded gillnets may be very variable, even between areas where the level of gillnet activity is Ghost catches were found in 5 of the 12 gillnet fragments retrieved, most of which comprised only small numbers of various species of deep-water crab. Only one fragment had a significant ghost catch (0.3 tonnes) and this comprised deep-water crab (Geryon tridens). Only a single fish was observed in ghost catches throughout the survey. MEDIN 3.1.1