4f4c4942-4343-5764-6473-313037373932 English NRW_DS116346 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-09-29T10:51:24.788Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) SAC Monitoring: Shad Monitoring Data for Rivers Wye, Usk and Tywi (2006) SAC Monitoring: Shad Monitoring Data for Rivers Wye, Usk and Tywi (2006) Data Monitro Gwangod Afonydd Gwy, Wysg a Thywi, 2006 Shad Monitoring, Usk, Wye & Tywi Catchments 2006 - CCW - Report no.40 CCW0002800000005 2007-01-31 NRW_DS107792 http://naturalresources.wales/ The purpose of this data capture was to monitor the Rivers Wye, Usk, and Tywi for the presence of shad. These rivers are designated as Special Areas of Conservation (SACs), partly because they support internationally important populations of twaite shad. Allis shad is also a feature of these sites and is a secondary reason for their selection as SACs. Records of other freshwater and estuarine fish species are also included within this dataset. This dataset provides a collation of existing knowledge, habitat data, and shad records, and supplies evidence to support the design and implementation of a suitable juvenile monitoring programme for condition assessment. There were five survey sites along the River Usk, five along the River Wye, and five along the River Tywi. Additional data are available in paper format within the associated report, including historical egg survey records dating back to 1980. These historical data were collated from the Environment Agency. The purpose of this data capture was to monitor the Rivers Wye, Usk, and Tywi for the presence of shad. These rivers are designated as Special Areas of Conservation (SACs), partly because they support internationally important populations of twaite shad. Allis shad is also a feature of these sites and is a secondary reason for their selection as SACs. Records of other freshwater and estuarine fish species are also included within this dataset. This dataset provides a collation of existing knowledge, habitat data, and shad records, and supplies evidence to support the design and implementation of a suitable juvenile monitoring programme for condition assessment. There were five survey sites along the River Usk, five along the River Wye, and five along the River Tywi. Additional data are available in paper format within the associated report, including historical egg survey records dating back to 1980. These historical data were collated from the Environment Agency. 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 Hull International Fisheries Institute University of Hull, Cottingham Road, Hull, HU6 7RX biosci@hull.ac.uk http://www2.hull.ac.uk/ 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 allis shad alosa fallax twaite shad bullhead herring esox lucius brown trout Special Areas of Conservation (SAC) - SAC monitoring cottus gobio bass alosa alosa european eel salmo trutta river Tywi (afon Tywi) dicentrarchus labrax pike salmo salar anguilla anguilla River Wye (Afon Gwy) Lampetra sp. clupea harengus River Usk Atlantic salmon 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 2006 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. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 England (ENG) SIR FYNWY - MONMOUTHSHIRE SIR GAERFYRDDIN - CARMARTHENSHIRE -4.45913055 -2.50794188 51.50323065 52.12667123 1980-01-01 2006-07-21 Further information is available in Countryside Council for Wales Environmental Monitoring Report no.40. Shad monitoring and assessment of conservation condition in the Wye, Usk and Tywi SACs Delimited Unknown Species survey data and associated monitoring records held in Microsoft Excel spreadsheets. Documents Unknown Shad Monitoring, Usk, Wye and Tywi Catchments 2006 (CCW Report No. 40; Reference: CCW0002800000005). Database Unknown Species records and sample locations held in 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 The data were collated from a variety of sources, including Excel spreadsheets containing data collected in 2006, Recorder surveys uploaded in 2007, and spatially mapped sample locations. Juvenile shad seine netting was undertaken in September and October 2005 and again in July 2006, in accordance with the protocols described by Hillman et al. (2003). Each sample station was netted multiple times, and counts were recorded for each sampling event. All fish were measured, and a subsample was identified to species using gill raker counts. Confidence in this dataset is high, as the surveys were undertaken by experienced staff. The data were collated from a variety of sources, including Excel spreadsheets containing data collected in 2006, Recorder surveys uploaded in 2007, and spatially mapped sample locations. Juvenile shad seine netting was undertaken in September and October 2005 and again in July 2006, in accordance with the protocols described by Hillman et al. (2003). Each sample station was netted multiple times, and counts were recorded for each sampling event. All fish were measured, and a subsample was identified to species using gill raker counts. Confidence in this dataset is high, as the surveys were undertaken by experienced staff.