4f4c4942-4343-5764-6473-313130303135 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-09-28T11:44:03.749Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) Welsh coastal habitats as calving and nursery grounds for the harbour porpoise (Phocoena phocoena) Welsh coastal habitats as calving and nursery grounds for the harbour porpoise (Phocoena phocoena) Cynefinoedd arfordirol Cymru fel mannau lloia a meithrin i'r llamhidydd (Phocoena phocoena) 1999-12-31 NRW_DS110015 http://naturalresources.wales/ The results of an investigation into strandings data for evidence that harbour porpoises breed and calve in Welsh coastal waters. Harbour porpoise calves are recorded annually off the Welsh coast from mid-May onwards. However, published survey data is lacking for the region and the distribution and relative abundance of calves have not been reported. This project present data from harbour porpoise strandings on the Welsh coast collected through the collaborative UK and Celtic Marine Mammal Strandings Project, examines the incidence and seasonality of calf and neonate strandings and compare stranding rates in Wales with England, Scotland and Ireland. The only data associated with this project is held within the report. Raw data is held by CSIP. The results of an investigation into strandings data for evidence that harbour porpoises breed and calve in Welsh coastal waters. Harbour porpoise calves are recorded annually off the Welsh coast from mid-May onwards. However, published survey data is lacking for the region and the distribution and relative abundance of calves have not been reported. This project present data from harbour porpoise strandings on the Welsh coast collected through the collaborative UK and Celtic Marine Mammal Strandings Project, examines the incidence and seasonality of calf and neonate strandings and compare stranding rates in Wales with England, Scotland and Ireland. The only data associated with this project is held within the report. Raw data is held by CSIP. 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 Marine Environmental Monitoring Marine Environmental Monitoring, Penwalk, Llechryd, Cardigan, Ceredigion, SA43 2PS, Wales rod.penrose@demon.co.uk http://www.strandings.com/ Cetacean Strandings Investigation Programme (CSIP) Manager (Rob Deaville), The Institute of Zoology, Reagents Park, London, NW1 4RY rob.deaville@ioz.ac.uk http://ukstrandings.org/ Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme carcass strandings calving grounds Natural History Museum postmortem marine and freshwater inventory neonate calves Marine Environmental Monitoring (MEM) phocoena phocoena nursery grounds harbour porpoises cetaceans (see also specific species) body length NRW Thesaurus 2026-08-27 geonetwork.thesaurus.local.theme.converted_nrw-keywords Cetacean mortality Cetacean morphology and physiology Cetacean reproduction SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects NRW SMNR Keywords 2024-06-26 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords 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 copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 1989-01-01 1999-01-31 The use of Welsh coastal habitats as calving and nursing grounds for the Harbour Porpoise Documents Report is held as Word document, and within a Winzip. Folder 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 Data collation and desk study. Marine mammal and turtle strandings in Wales are reported to Marine Environmental Monitoring (MEM) via a dedicated telephone line. MEM respond to and collect systematic data from all stranding incidents, identify/confirm species, measure body length, sex the carcass, collect tissue samples, and advise on disposal of carcasses. In addition, animals in fresh, slight or moderate condition are recovered whenever possible placed in cold storage or taken directly for post mortem examination. All records of cetacean strandings in England and Wales are held by the Natural History Museum, London and have been since 1913. The present study investigates all strandings of harbour porpoise recorded on the Welsh coast over a 10 year period between January 1989 and January 1999. Identification of maternally dependant and neonate calves- overall body length used to separate stranded animals into approximate age classes. Classify animals of 110cm or less as 'calves'. Body length maximum of 90cm to identify calves that were still maternally dependent, i.e. neonates and calves assumed too young to survive alone. Data collation and desk study. Marine mammal and turtle strandings in Wales are reported to Marine Environmental Monitoring (MEM) via a dedicated telephone line. MEM respond to and collect systematic data from all stranding incidents, identify/confirm species, measure body length, sex the carcass, collect tissue samples, and advise on disposal of carcasses. In addition, animals in fresh, slight or moderate condition are recovered whenever possible placed in cold storage or taken directly for post mortem examination. All records of cetacean strandings in England and Wales are held by the Natural History Museum, London and have been since 1913. The present study investigates all strandings of harbour porpoise recorded on the Welsh coast over a 10 year period between January 1989 and January 1999. Identification of maternally dependant and neonate calves- overall body length used to separate stranded animals into approximate age classes. Classify animals of 110cm or less as 'calves'. Body length maximum of 90cm to identify calves that were still maternally dependent, i.e. neonates and calves assumed too young to survive alone.