4f4c4942-4343-5764-6473-313136333436 English NRW_DS116805 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2024-05-31T09:38:49.457Z NRW 1.0 wel British National Grid (EPSG::27700) Freshwater Shad Monitoring Data Freshwater Shad Monitoring Data Data Monitro Gwangen Dŵr Croyw 2016-08-17 NRW_DS116346 The Rivers Wye, Usk and Tywi are designated as Special Areas of Conservation (SACs) under the EC 92/43/EEC Habitats Directive for several features including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shads are migratory members of the Clupeidae (herring family) that ascend rivers to spawn in late spring. The populations of both species are threatened in Europe mainly due to obstructions to migration and issues surrounding water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye and Tywi. The River Wye, Usk and Tywi have been designated as a Special Area of Conservation (SAC) for shads and other features including salmon, lampreys and bullhead. However, it is not certain whether a breeding population of allis shad still exists. The former Countryside Council for Wales (CCW), and now Natural Resources Wales (NRW) is responsible for monitoring the condition of shad populations within SACs and to ensure the maintenance of favourable conservation status within these designated sites. The purpose of this data capture was to assist with the assessment of Favourable Conservation Status along the Wye, Usk and Tywi to supplement the main shad spawning distribution condition assessment for these rivers. This dataset comprises of a number of surveys entered into Recorder 6 which have been packaged for dissemination onto the NBN Atlas. Detailed information about each of the survey data can be found under their individual metadata entries. The Rivers Wye, Usk and Tywi are designated as Special Areas of Conservation (SACs) under the EC 92/43/EEC Habitats Directive for several features including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shads are migratory members of the Clupeidae (herring family) that ascend rivers to spawn in late spring. The populations of both species are threatened in Europe mainly due to obstructions to migration and issues surrounding water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye and Tywi. The River Wye, Usk and Tywi have been designated as a Special Area of Conservation (SAC) for shads and other features including salmon, lampreys and bullhead. However, it is not certain whether a breeding population of allis shad still exists. The former Countryside Council for Wales (CCW), and now Natural Resources Wales (NRW) is responsible for monitoring the condition of shad populations within SACs and to ensure the maintenance of favourable conservation status within these designated sites. The purpose of this data capture was to assist with the assessment of Favourable Conservation Status along the Wye, Usk and Tywi to supplement the main shad spawning distribution condition assessment for these rivers. This dataset comprises of a number of surveys entered into Recorder 6 which have been packaged for dissemination onto the NBN Atlas. Detailed information about each of the survey data can be found under their individual metadata entries. 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 Countryside Council for Wales (CCW) Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ Environment Agency Wales (EA Wales) Cambria House, 29 Newport Road, Cardiff, CF24 0TP, Wales enquiries@environment-agency.gov.uk www.environment-agency.gov.uk 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 Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC) Shad NBN Atlas National Biodiversity Network [NBN] alosa alosa twaite shad River Usk Special Areas of Conservation (SAC) - SAC monitoring alosa fallax allis shad NRW Thesaurus NRW Thesaurus 2024-04-09 geonetwork.thesaurus.local.theme.converted_nrw-keywords Sustainable Management of Natural Resources (SMNR) Animals, Plants and Other Organisms (SMNR) Ecosystem (SMNR) Water Quality (SMNR) Management Areas (SMNR) Natural Resources (Incl. Features and Processes) (SMNR) Freshwater and Wetlands (SMNR) NRW SMNR Keywords NRW SMNR Keywords 2024-03-05 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 2011 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. English biota SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -3.66161429 -3.58302308 52.85964672 52.91223083 1980-01-01 2012-12-31 For further information see the survey metadata: - 107792 SAC Monitoring: Shad Monitoring data for Rivers Wye, Usk and Tywi (2006) - 112727 SAC Monitoring: Twaite (Alosa fallax) and Allis (Alosa alosa) Shad egg survey of the River Usk (2010-2011) - 114673 SAC Monitoring: Shad Egg Survey on the River Wye (2011) - 115312 SAC Monitoring: Afon Tywi Shad Egg Survey (2012) - 115294 SAC Monitoring: Shad Egg Survey River Usk and River Wye (2012) Database [A] Species data is held in Recorder 6. [B] This dataset is also available to download on the NBN Gateway - See Resource Locator https://registry.nbnatlas.org/public/show/dp122 View and Download Data World Wide Web page 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 false Environment Agency Wales (EAW) and Countryside Council for Wales (CCW), recorded shad egg survey data are available for the River Wye Usk and Tywi. A minimum of 10 kick samples were undertaken at each site with the number of eggs found in each kick recorded. If in total 10 shad eggs were recorded the survey was terminated. However, if less than 10 shad eggs were recorded the kick sampling continued either until over 10 eggs were found or a maximum of 25 kick samples had been undertaken. Confidence in this dataset is high. Environment Agency Wales (EAW) and Countryside Council for Wales (CCW), recorded shad egg survey data are available for the River Wye Usk and Tywi. A minimum of 10 kick samples were undertaken at each site with the number of eggs found in each kick recorded. If in total 10 shad eggs were recorded the survey was terminated. However, if less than 10 shad eggs were recorded the kick sampling continued either until over 10 eggs were found or a maximum of 25 kick samples had been undertaken. Confidence in this dataset is high.