4f4c4942-4343-5764-6473-313234313634 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T16:24:55.393Z NRW 1.0 wel Latitude and Longitude (EPSG::4326) Eighteen years of capture-mark-recapture (CMR) data of grey seal pups, Halichoerus grypus, from Pembrokeshire, Wales Eighteen years of capture-mark-recapture (CMR) data of grey seal pups, Halichoerus grypus, from Pembrokeshire, Wales Deunaw mlynedd o ddata dal-nodi-ail-ddal (CMR) morloi llwyd, Halichoerus grypus, ifainc o Sir Benfro Ringing_Records_Full_Scan.pdf Ringing_Records_Digitised.xlsx Grey_seal_pup_capture-mark-recapture_METADATA (003).docx Grey_seal_pup_capture-mark-recapture_VARIABLES.xlsx Grey_seal_pup_capture-mark-recapture_DATA.csv 2019-10-28 NRW_DS124164 Eighteen years (1954-1972) of capture-mark-recapture data of 245 grey seal pups marked with identification tags in Wales. The data was obtained from paper files held by NRW and supplied originally West Wales Field Society and includes information on the location and number of animals marked in each year including sex and age estimations. Eighteen years (1954-1972) of capture-mark-recapture data of 245 grey seal pups marked with identification tags in Wales. The data was obtained from paper files held by NRW and supplied originally West Wales Field Society and includes information on the location and number of animals marked in each year including sex and age estimations. Deunaw mlynedd (1954-1972) o ddata dal-marcio-ail-ddal 245 o forloi llwyd ifainc wedi'u nodi â thagiau adnabod yng Nghymru. Cafwyd y data o ffeiliau papur a gedwir gan CNC ac a gyflenwyd yn wreiddiol gan Gymdeithas Maes Gorllewin Cymru ac mae'n cynnwys gwybodaeth am leoliad a nifer yr anifeiliaid a farciwyd bob blwyddyn gan gynnwys amcangyfrifon rhyw ac oedran. Cydnabyddiaeth Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © a Hawl Cronfa Ddata Cyfoeth Naturiol Cymru. Cedwir pob hawl. Yn cynnwys data gwirfoddolwyr © Cymdeithas Sŵolegol Llundain a © Cymdeithas Maes Gorllewin Cymru. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Zoological Society London (ZSL) Zoological Society London (ZSL), London Zoo, Outer Circle, Regent's Park, London, NW1 4RY https://www.zsl.org/about-us/contact-us https://www.zsl.org/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Zoological Society London (ZSL) Zoological Society London (ZSL), London Zoo, Outer Circle, Regent's Park, London, NW1 4RY https://www.zsl.org/about-us/contact-us https://www.zsl.org/ 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 marine mammals marine mammals halichoerus grypus seals (see also specific species) dispersal grey seals ontogeny mark-release-recapture population dynamics pinnipedia (pinnipeds) NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Seal abundance Seal morphology and physiology SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml This data is comprised of a mixture of third party owned records and NRW records. NRW policy permits access to and release of this data under the same terms as its own data. There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW, ZSL, WWFS and various third-party recorders NRW owns the copyright of the collation, but the ownership of the records themselves rests with the originators. Data held by NRW 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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains volunteer data © Zoological Society London and © West Wales Field Society Open Government Licence English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 littoral SIR BENFRO - PEMBROKESHIRE -5.40 -4.65 51.55 52.15 1954-01-01 1972-12-31 Kay, W. P., Börger, L., Stringell, T. B., Mortlock, E., Lock, K., Alexander, M., Bull, J. C. (Year) Eighteen years of capture-mark-recapture data of grey seal pups, Halichoerus grypus, from Pembrokeshire, Wales, United Kingdom. Delimited Excel spreadsheets Documents PDF and.docx copies of the scientific paper and metadata [B] Scan of paper field records https://datamap.gov.wales/documents/2611 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 Seal pups were marked on beaches around the coast of Pembrokeshire covering over 100 km of National Park coastline. Seals were captured and marked with rings during the pupping season and were captured opportunistically. From detailed descriptive accounts for each individual, information of each seal’s natal colony, condition, and censorship, as well as an estimated of their date of birth and calculation of the duration of time between mark and recapture was derived. From original text descriptions of mark locations geolocated accurate positional information in a latitude-longitude format was also derived. Data collected in 1952 and 1953 were not documented in the paper files. However, a summary of records for 1952-1953 can be found in Hewer (1955). Seal pups were marked on beaches around the coast of Pembrokeshire covering over 100 km of National Park coastline. Seals were captured and marked with rings during the pupping season and were captured opportunistically. From detailed descriptive accounts for each individual, information of each seal’s natal colony, condition, and censorship, as well as an estimated of their date of birth and calculation of the duration of time between mark and recapture was derived. From original text descriptions of mark locations geolocated accurate positional information in a latitude-longitude format was also derived. Data collected in 1952 and 1953 were not documented in the paper files. However, a summary of records for 1952-1953 can be found in Hewer (1955).