4f4c4942-4343-5764-6473-313235333538 English NRW_DS122446 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-12-03T10:08:40.398Z NRW 1.0 wel NONE KiEco Freshwater Ecology: Fish Monitoring Data KiEco Freshwater Ecology: Fish Monitoring Data 2022-11-17 2025-01-16 NRW_DS125358 Freshwater fish are used as an indicator of stock status, water and habitat quality, artificial obstacles to migration and river flow requirements due to specific life-cycle requirements. This dataset is made up of the species count and length values from the freshwater river fish surveys conducted across Wales by Natural Resources Wales and former Environment Agency Wales. These surveys are conducted as part of on-going monitoring of fish in their natural environment for legislative requirements and to meet business drivers. For the geospatial version of this data please see NRW_DS125743 "KiEco: Freshwater Fish - Geospatial". Freshwater fish are used as an indicator of stock status, water and habitat quality, artificial obstacles to migration and river flow requirements due to specific life-cycle requirements. This dataset is made up of the species count and length values from the freshwater river fish surveys conducted across Wales by Natural Resources Wales and former Environment Agency Wales. These surveys are conducted as part of on-going monitoring of fish in their natural environment for legislative requirements and to meet business drivers. For the geospatial version of this data please see NRW_DS125743 "KiEco: Freshwater Fish - Geospatial". 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 Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme monitoring (see specific types of monitoring eg. woodland monitoring) fish (fishes) (see also specific species) catchment survey electric fishing NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords This data is comprised of a mixture of third party owned records and NRW records. There are no access restrictions on the NRW data. NRW may release, publish or disseminate it freely. However, there are third party use restrictions. no limitations © CNC/NRW. NRW owned 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. NRW does NOT grant permission to disseminate or re-use any data that is not labelled as NRW ownership. Those seeking such permission should approach the originator directly. 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 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 1974-01-01 Delimited Unknown CSV/Excel https://registry.nbnatlas.org/public/show/dr3164 WWW:LINK-1.0-http--link View and Download 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 A strict methodology is applied when sampling for freshwater river fish. There is a core network of sites which are monitored on an annual basis, and also catchment-wide surveys on a six-year rolling programme. These sites are located in habitat types suitable for the respective fish species. In addition, sites may be sampled for investigative work, or on an ad hoc basis. Sampling areas are commonly 50 metres long and the full width of the river and may embrace different flow types and substrate. Electric fishing is the most commonly used sampling method, although alternative methods are available for different strategies, such as netting and trapping. Once a sample of fish is collected, they are immediately identified in the field, measured and counted and then released alive into the same section of river from where they were captured. Freshwater fish survey data is available from 1974 to present. A caveat being that historical data are sporadic until 2001. This is because fish survey data collected before 2001 were often saved in local databases and not the national ones (KiEco and formerly NFPD). Some information has be redacted to make the data openly available. This includes: Third party data Data collected for ongoing investigations Cancelled or incomplete surveys A strict methodology is applied when sampling for freshwater river fish. There is a core network of sites which are monitored on an annual basis, and also catchment-wide surveys on a six-year rolling programme. These sites are located in habitat types suitable for the respective fish species. In addition, sites may be sampled for investigative work, or on an ad hoc basis. Sampling areas are commonly 50 metres long and the full width of the river and may embrace different flow types and substrate. Electric fishing is the most commonly used sampling method, although alternative methods are available for different strategies, such as netting and trapping. Once a sample of fish is collected, they are immediately identified in the field, measured and counted and then released alive into the same section of river from where they were captured. Freshwater fish survey data is available from 1974 to present. A caveat being that historical data are sporadic until 2001. This is because fish survey data collected before 2001 were often saved in local databases and not the national ones (KiEco and formerly NFPD). Some information has be redacted to make the data openly available. This includes: Third party data Data collected for ongoing investigations Cancelled or incomplete surveys