CEFAS2405253d-25a9-44f5-adc7-2c156e72f1a5 English series series 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 2025-05-13T12:27:02 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Western Celtic Sea Groundfish Survey, Q1 (FSS: WCGFS) 2015-10-21 publication 2025-05-13 revision 2011-10-07 creation CEFAS117 https://data.cefas.co.uk Surveys carried out to investigate the distribution and abundance of juvenile mackerel. Two surveys per year in March and December. Station, catch, length (all species) and biological data (selected species) are collect using research vessels. The standard bottom trawl used on these surveys was a modified Portuguese High-headline Trawl fitted with 14” rubber bobbins on the groundrope and a bunt tickler chain. The codend was fitted with a small-mesh liner (nominal diagonal stretched mesh 20 mm). The standard haul duration was 60 min and trawling was restricted to daylight hours. Fixed station positions were used and for analytical purposes 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 European Commission info@publications.europa.eu owner annually Benthos Crustacean Invertebrate Mollusc Shellfish Age Advice Indicator Management Monitoring Stock (biological) Aquatic environment Biodiversity Catchment area Coastal environment Deep sea Ecosystem Species Taxonomy GEMET, version 1.0 2008-06-01 publication Biodiversity indices Electrical conductivity of the water column Salinity of the water column Temperature of the water column Fish abundance in water bodies Fish biomass in water bodies SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Biota abundance, biomass and diversity Water column temperature and salinity Fish Fisheries SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Infralittoral Circalittoral Epipelagic 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 Public data - no limitations to reuse English biota -12.00 -1.00 47.00 53.00 1982 2004 Unknown https://data.cefas.co.uk/view/117 Cefas Data Portal information The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. 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 Fishing over an allocated area of the western English Channel and Celtic Sea using a standard grid. The objectives of the survey were as follows: 1. To monitor changes in the distribution, abundance and size/age structure of fish populations within the survey area. 2. To provide time-series of indices of abundance for inclusion in scientific assessments of the main commercial species. 3. To provide information on the biology and ecology of fish species in the survey area. MEDIN 3.1.1