4f4c4942-4343-5764-6473-313135393534 English Master Reference Data Team Natural Resources Wales, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ 2026-10-01T14:54:42.472Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) Assessment of the condition of the white-clawed crayfish Austropotamobius pallipes in the River Wye Special Area of Conservation (SAC) (2014). Assessment of the condition of the white-clawed crayfish Austropotamobius pallipes in the River Wye Special Area of Conservation (SAC) (2014). Asesiad o gyflwr cimwch afon crafanc wen Austropotamobius pallipes yn Ardal Cadwraeth Arbennig Afon Gwy (2014). 2015-04-01 NRW_DS115954 http://naturalresources.wales/ In October and November 2014, sections of the River Wye Special Area of Conservation (SAC), including the Afon Edw, Nant yr Offeiriad, and Sgithwen Brook, were surveyed for white-clawed crayfish to assess the condition of both the crayfish populations and their habitats. The survey was undertaken to provide data required for assessing whether the white-clawed crayfish feature of the River Wye SAC was in favourable condition. Although additional data will be required before a full condition assessment can be completed, the apparent absence of white-clawed crayfish from the Afon Edw, following a mortality event in 2006, is of concern given the importance of this watercourse for the species in the recent past. While crayfish populations appeared relatively robust in Nant yr Offeiriad and Sgithwen Brook, they were largely confined to the headwater reaches. It was considered important to complete further white-clawed crayfish surveys within the River Wye SAC during 2015 so that the 2014 survey results could be incorporated into a comprehensive condition assessment. In October and November 2014, sections of the River Wye Special Area of Conservation (SAC), including the Afon Edw, Nant yr Offeiriad, and Sgithwen Brook, were surveyed for white-clawed crayfish to assess the condition of both the crayfish populations and their habitats. The survey was undertaken to provide data required for assessing whether the white-clawed crayfish feature of the River Wye SAC was in favourable condition. Although additional data will be required before a full condition assessment can be completed, the apparent absence of white-clawed crayfish from the Afon Edw, following a mortality event in 2006, is of concern given the importance of this watercourse for the species in the recent past. While crayfish populations appeared relatively robust in Nant yr Offeiriad and Sgithwen Brook, they were largely confined to the headwater reaches. It was considered important to complete further white-clawed crayfish surveys within the River Wye SAC during 2015 so that the 2014 survey results could be incorporated into a comprehensive condition assessment. 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 David Rogers Associates David Rogers Associates, 9 The Moat, Castle Donington, Derby, DE74 2PD drogers77777@gmail.com <!-- No web site --> 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 biological monitoring white-clawed crayfish biological surveys austropotamobius pallipes NRW Thesaurus 2026-08-27 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW, 2015. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 POWYS - POWYS -3.44023715 -3.259769549 52.08401111 52.21511506 2014-10-01 2014-11-30 Assessment of the condition of the white clawed crayfish austropotamobius pallipes in the river Wye Special Area of Conservation in 2014 Documents Unknown PDF report available in DMS (NRW Evidence Reports) Database Unknown Species data to be entered into Recorder 6 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 Sampling followed the methodology developed during the 2003 monitoring programme and included a combination of manual searching and trapping. The data were provided to Natural Resources Wales (NRW) and will, in due course, be transferred to and made available through Recorder 6. Sampling followed the methodology developed during the 2003 monitoring programme and included a combination of manual searching and trapping. The data were provided to Natural Resources Wales (NRW) and will, in due course, be transferred to and made available through Recorder 6.