4f4c4942-4343-5764-6473-313139313235 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-03-07T15:18:46.44Z NRW 1.0 wel British National Grid (EPSG::27700) Special Area of Conservation (SAC) Monitoring: Shad Egg Survey on the River Wye (2017) Special Area of Conservation (SAC) Monitoring: Shad Egg Survey on the River Wye (2017) Monitro Ardaloedd Cadwraeth Arbennig (ACA): Arolwg o Wyau Gwangod ar yr Afon Gwy (2017) 2017-06-30 NRW_DS119125 The River Wye rises on Plynlimon in the Cambrian Mountains and flows in a generally south-easterly direction to enter the Severn Estuary at Chepstow. The river is designated as a Special Area of Conservation (SAC) under the Habitats Directive for several features, including salmon, lampreys and shads: Twaite (Alosa fallax) and Allis (Alosa alosa) shad. In Britain, significant populations of Twaite shad are known to spawn in the Rivers Severn, Wye, Usk and Tywi. The population of both species are threatened in Europe mainly due to obstructions to migration and water quality issues. The purpose of this data capture was to make an assessment of Conservation Status by conducting egg deposition surveys to assess spawning extent and compare these with results from previous datasets. Surveys carried out along the length of the Welsh portion of the River Wye from Builth Wells to Monmouth. The survey was conducted in May and June of 2013, 2015 & 2016. The River Wye rises on Plynlimon in the Cambrian Mountains and flows in a generally south-easterly direction to enter the Severn Estuary at Chepstow. The river is designated as a Special Area of Conservation (SAC) under the Habitats Directive for several features, including salmon, lampreys and shads: Twaite (Alosa fallax) and Allis (Alosa alosa) shad. In Britain, significant populations of Twaite shad are known to spawn in the Rivers Severn, Wye, Usk and Tywi. The population of both species are threatened in Europe mainly due to obstructions to migration and water quality issues. The purpose of this data capture was to make an assessment of Conservation Status by conducting egg deposition surveys to assess spawning extent and compare these with results from previous datasets. Surveys carried out along the length of the Welsh portion of the River Wye from Builth Wells to Monmouth. The survey was conducted in May and June of 2013, 2015 & 2016. 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 Protected sites Species distribution Habitats and biotopes GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme protected areas allis shad alosa alosa twaite shad alosa fallax monitoring (see specific types of monitoring eg. woodland monitoring) freshwater (fresh water, open water) (see also freshwater ecology) (see also inland waters,rivers,lakes) Special Areas of Conservation (SAC) - SAC monitoring Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC) protected sites NRW Thesaurus NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml IPSV Subjects List IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects NRW SMNR Keywords NRW SMNR Keywords 2024-06-26 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords There are no access restrictions to 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. English biota inlandWaters SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.512067 2012-01-01 2018-12-31 Garrett, HM., (2017), River Wye SAC Allis & Twaite shad population condition assessment, Reporting cycle 2013 to 2018, 23 pp., Natural Resources Wales, Dolgellau. Unpub. Delimited Microsoft Excel Table .XLSX format [Workbook Wye shad egg surveys 2013 onwards.xlsx] 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 is collected according to Joint Nature Conservation Committee (JNCC) published guidance on Common Standards Monitoring for Freshwater Fauna (JNCC, 2015). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring. Data is collected according to Joint Nature Conservation Committee (JNCC) published guidance on Common Standards Monitoring for Freshwater Fauna (JNCC, 2015). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring.