4f4c4942-4343-5764-6473-313232323032 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T16:24:56.27Z NRW 1.0 wel Latitude and Longitude (EPSG::4326) Wales' grey seal photo-identification database: EIRPHOT (1992-2016) Wales' grey seal photo-identification database: EIRPHOT (1992-2016) Cronfa ddata adnabod lluniau morloi llwydion Cymru: EIRPHOT EIRPHOT 2019-10-30 NRW_DS122202 This dataset is a catalogue of seal images that were collected as part of the former Countryside Council for Wales (CCW) and Natural Resources Wales' (NRW) seal monitoring and evidence work. Images were also provided by volunteers, partners, organisations and members of the public through collaboration with CCW/NRW. The images are of heads, necks and flanks of grey seals (mostly female) photographed at seal haul out sites around the Celtic and Irish Seas from 1992 to 2016 and show the pelage markings of seals that can be individually recognised/identified from subsequent photographic encounters – photo-identification (Capture, Mark, Recapture). The database contains over 17,000 photographic images of more than 9,000 grey seals. Photo-ID allows individual seals to be captured through time and space and analyses of the data provide insights into site fidelity and associations, movements and connectivity, and longevity/survival. This entry supersedes metadata entry 115548 which was created in 2013. This dataset is a catalogue of seal images that were collected as part of the former Countryside Council for Wales (CCW) and Natural Resources Wales' (NRW) seal monitoring and evidence work. Images were also provided by volunteers, partners, organisations and members of the public through collaboration with CCW/NRW. The images are of heads, necks and flanks of grey seals (mostly female) photographed at seal haul out sites around the Celtic and Irish Seas from 1992 to 2016 and show the pelage markings of seals that can be individually recognised/identified from subsequent photographic encounters – photo-identification (Capture, Mark, Recapture). The database contains over 17,000 photographic images of more than 9,000 grey seals. Photo-ID allows individual seals to be captured through time and space and analyses of the data provide insights into site fidelity and associations, movements and connectivity, and longevity/survival. This entry supersedes metadata entry 115548 which was created in 2013. Mae'r set ddata hon yn gatalog o ddelweddau morloi a gasglwyd fel rhan o waith monitro morloi a thystiolaeth Cyngor Cefn Gwlad Cymru a Chyfoeth Naturiol Cymru (CNC). Darparwyd delweddau hefyd gan wirfoddolwyr, partneriaid, sefydliadau ac aelodau'r cyhoedd trwy gydweithrediad â'r Cyngor Cefn Gwlad/CNC. Mae'r delweddau'n dangos pennau, gyddfau ac ystlysau morloi llwyd (benywod yn bennaf) y tynnwyd ffotograffau ohonynt mewn safleoedd glanio morloi o amgylch y Môr Celtaidd a Môr Iwerddon rhwng 1992 a 2016 ac maent yn dangos marciau croen morloi y gellir eu hadnabod yn unigol o gyfarfyddiadau ffotograffig dilynol - adnabod lluniau (Dal, Nodi, Ail-ddal). Mae'r gronfa ddata yn cynnwys dros 17,000 o ddelweddau ffotograffig o fwy na 9,000 o forloi llwyd. Mae Adnabod trwy luniau yn caniatáu dal morloi unigol drwy amser a gofod ac mae dadansoddiadau o'r data'n rhoi mewnwelediadau i ffyddlondeb a chysylltiadau safle, symudiadau a chysylltedd, a hirhoedledd/goroesiad. Adroddiad Tystiolaeth CNC 280 mewn cyfeiriadau: Langley I, Rosas da Costa Oliver T, Hiby L, Morris CW, Stringell TB, Pomeroy P 2018. EIRPHOT: A critical assessment of Wales’ grey seal (Halichoerus grypus) photo-identification database. Adroddiad Cyfres Adroddiadau Tystiolaeth CNC Rhif: 280, 94tud, Cyfoeth Naturiol Cymru, Bangor Cydnabyddiaeth Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © a Hawl Cronfa Ddata Cyfoeth Naturiol Cymru. Cedwir pob hawl Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme halichoerus grypus seals (see also specific species) grey seals pinnipedia (pinnipeds) NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Seal morphology and physiology Seal abundance SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Those wishing to publish papers and academic research based on the data, should cite the report as per the information warning Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 unknown Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation unknown 1992-07-01 2016-11-30 Langley I, Rosas da Costa Oliver T, Hiby L, Morris CW, Stringell TB, Pomeroy P 2018. EIRPHOT: A critical assessment of Wales’ grey seal (Halichoerus grypus) photo-identification database. NRW Evidence Report Series Report No: 280, 94pp, Natural Resources Wales, Bangor. Further information about photo-identification software used can be found at http://conservationresearch.org.uk/ EIRPHOT : A critical assessment of Wales' grey seal (halichoerus grypus) photo-identification database Database [A] EIRPHOT database [B] Software: ExtractCompare.exe for use with the database Delimited Capture history data in the form of Excel spreadsheets Text or Plaintext Capture history data in the form of MARK compatible text files Documents The final report in Microsoft Word and Adobe PDF formats https://datamap.gov.wales/documents/2609 WWW:LINK-1.0-http--link View and Download Data 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 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The EIRPHOT database consists of 35,724 pattern extracts, from 17,056 images across 3,273 sampling occasions collected between 1992 and 2016 at 280 locations around the British Isles, with a focus on the Irish and Celtic Seas. The EIRPHOT database uses Microsoft Access to store photo-ID data. The Sightings table stores metadata on each sampling occasion including the date and location. This is linked to the Encounter table which lists each encounter with a seal, its age, sex, whether it was with a pup, any scars or injuries, and here it is assigned an ID. This table is linked to the Image table which records the names of images taken for each encounter. And finally this is linked to the Cells table, which lists the details of the pattern extracts that are available from the images. Pattern extracts from images entered into EIRPHOT were compared using ExtractCompare software. Capture histories were produced using Spatially Explicit Capture-Recapture software. Outputs in the form of Excel spreadsheets where each row represents a uniquely identifiable seal, each column represents a time period during which the individual has been photographed and matched to a previous image, and values in each spreadsheet cell are the location code in which the animal was seen first during that period. Information Warning: any published outputs or research based on these data should use the citation for NRW Evidence Report 280 in references: Langley I, Rosas da Costa Oliver T, Hiby L, Morris CW, Stringell TB, Pomeroy P 2018. EIRPHOT: A critical assessment of Wales’ grey seal (Halichoerus grypus) photo-identification database. NRW Evidence Report Series Report No: 280, 94pp, Natural Resources Wales, Bangor. NRW cannot provide advice or support for use or installation of the database. The EIRPHOT database consists of 35,724 pattern extracts, from 17,056 images across 3,273 sampling occasions collected between 1992 and 2016 at 280 locations around the British Isles, with a focus on the Irish and Celtic Seas. The EIRPHOT database uses Microsoft Access to store photo-ID data. The Sightings table stores metadata on each sampling occasion including the date and location. This is linked to the Encounter table which lists each encounter with a seal, its age, sex, whether it was with a pup, any scars or injuries, and here it is assigned an ID. This table is linked to the Image table which records the names of images taken for each encounter. And finally this is linked to the Cells table, which lists the details of the pattern extracts that are available from the images. Pattern extracts from images entered into EIRPHOT were compared using ExtractCompare software. Capture histories were produced using Spatially Explicit Capture-Recapture software. Outputs in the form of Excel spreadsheets where each row represents a uniquely identifiable seal, each column represents a time period during which the individual has been photographed and matched to a previous image, and values in each spreadsheet cell are the location code in which the animal was seen first during that period. Information Warning: any published outputs or research based on these data should use the citation for NRW Evidence Report 280 in references: Langley I, Rosas da Costa Oliver T, Hiby L, Morris CW, Stringell TB, Pomeroy P 2018. EIRPHOT: A critical assessment of Wales’ grey seal (Halichoerus grypus) photo-identification database. NRW Evidence Report Series Report No: 280, 94pp, Natural Resources Wales, Bangor. NRW cannot provide advice or support for use or installation of the database.