CEFAS9015d8ba-9903-40ad-b9ce-d5f5ed2e8470 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 2023-02-09T12:48:26 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Phenological changes in growth in cod as an indicator of climate change 2014-11-26 publication 2023-02-09 revision 2014-06-02 creation CEFAS3102 https://data.cefas.co.uk Cod (*Gadus morhua*) stocks in the North Sea have declined to historically low levels of abundance and are considered to be suffering from a reduced ability to reproduce. In this situation there is considerable concern about the way in which climate change may affect the ability of these stocks to recover. Theoretical studies based on the effects of temperature on growth and spawning success or recruitment suggest that increases in temperature may result in the decline and subsequent disappearance of cod from the North Sea. Consequently it is useful to look at long time series data to see whether there is evidence for direct impacts of temperature changes on cod. Data includes otolith age, length and growth increment measurements, as well as high resolution photographs. 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 Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Fish Fisheries Other biological measurements SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Analysis Monitoring Stock (biological) Species GEMET, version 1.0 2008-06-01 publication Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Unknown 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 1.50 55.00 51.50 80.00 1979 2005 Delimited Unknown https://data.cefas.co.uk/view/3102 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: CSV. 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 One way in which it is possible to study changes in fish growth is through archival material maintained by a number of fisheries institutes. This study used samples of cod otoliths from archives covering the period 1985-2005 in the southern North Sea and 1979-2005 in the Barents Sea in the North East Arctic. All samples measured at x10 magnification. MEDIN 3.1.1