CEFAS95e3e817-f0c8-480e-8ca3-b8693b00ebc8 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 2021-12-16T12:13:54 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Inshore longline fisheries in the Southern North Sea 2019/20 - Fisheries Science Partnership FSP Report 63 Inshore Longline Survey 2019/2020 2020-12-01 publication 2021-12-16 revision 2020-11-16 creation CEFAS20925 https://data.cefas.co.uk This work was carried out as part of the Fisheries Science Partnership (FSP) programme. The overall aims of this project were to examine i) the seasonal catch rates of fish taken in the southern North Sea demersal longline fishery; ii) catch composition of all discarded and retained fish; iii) vitality of commercially important skate and ray species, focusing on thornback ray *Raja**clavata*; iv) post-release behaviour and discard survival of discarded thornback ray through an electronic tagging programme. On each occasion longlines were deployed, the positional information, soak times, and number of hooks/baths were recorded, and for all species of fish length distribution data were taken. For electronically tagged fish the release date, release position and individual length, wing width, sex and maturity were recorded. 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 Fish Fisheries 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 0.50 2.00 51.50 52.25 2019-08-01 2020-01-31 Binary Unknown https://data.cefas.co.uk/view/20925 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 Three inshore longline surveys were successfully completed, each consisting of three days, and fishing at six locations, undertaken seasonally (August 2019, November 2019 and January 2020). In each location, a line comprising three sets of lines (“baths”) were deployed, with ca. 600 No 7 J-hooks in total. Whilst the number of “baths” deployed was less than the ‘normal’ commercial fishing activity (ca. 8 baths), it allowed for a higher number of locations to be chosen and covered per survey, and still allowed typical commercial fishing operations to be undertaken. All fish species brought onboard were recorded in terms of their total length (measured to the cm below), sex and maturity. For male skate and shark species encountered (with the exception of lesser-spotted dogfish), maturity was further discriminated as these species could be externally assessed. Additional wing width measurements (measured to the cm below), were also recorded for all skate species. Further data collection included whether the fish would refer to the retained or discarded component part of the catch. A random subsample of the retained and discarded thornback ray were further assessed in terms of health condition and vitality. A sub-sample of the thornback ray were tagged electronically with data storage tags (DST) to further infer on the post-release survival after capture by longline. MEDIN 3.1.1