4f4c4942-4343-5764-6473-3234333037 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-10-01T15:09:18.004Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) Dormouse Database (1905-2004) Dormouse Database (1905-2004) Cronfa Ddata Pathewod Dormouse Database - NE - Welsh Extract CCW000380000000C 2004-06-01 NRW_DS24307 http://naturalresources.wales/ This database was created to store records generated through the Great Nut Hunt and to provide a comprehensive and up-to-date picture of the distribution of the dormouse across England and Wales. The dormouse does not occur in Scotland or Northern Ireland. The dataset has been used to support reporting on Biodiversity Action Plan (BAP) delivery. As the records were derived largely from contributed observations rather than systematic survey effort, the dataset is subject to bias towards locations visited during Great Nut Hunt activities. Grid references generally refer to the centroid of the woodland in which dormice were recorded, rather than the precise location of the observation. Many grid references have not yet been validated using a Geographic Information System (GIS) to confirm that they fall within woodland boundaries. This validation process is ongoing and typically results in the use of eight-figure grid references (10 m resolution). The dataset includes the recorder name, site name, grid reference, and type of sighting (for example, whether the animal was alive or dead, or the location of a nest). Records originate from a variety of sources and have been collated and maintained by Tony Mitchell-Jones at English Nature. The dataset represents an incomplete directory of sites, some of which are monitored annually as part of the National Dormouse Monitoring Programme. Only the most recent record for each site is included in this dataset; historical records are retained within the source database. The source data also include record source information and associated comments. Records are generally stored using six-figure British National Grid references, with the precision of the original observations unknown. All grid references represent the centre point of the site. This database was created to store records generated through the Great Nut Hunt and to provide a comprehensive and up-to-date picture of the distribution of the dormouse across England and Wales. The dormouse does not occur in Scotland or Northern Ireland. The dataset has been used to support reporting on Biodiversity Action Plan (BAP) delivery. As the records were derived largely from contributed observations rather than systematic survey effort, the dataset is subject to bias towards locations visited during Great Nut Hunt activities. Grid references generally refer to the centroid of the woodland in which dormice were recorded, rather than the precise location of the observation. Many grid references have not yet been validated using a Geographic Information System (GIS) to confirm that they fall within woodland boundaries. This validation process is ongoing and typically results in the use of eight-figure grid references (10 m resolution). The dataset includes the recorder name, site name, grid reference, and type of sighting (for example, whether the animal was alive or dead, or the location of a nest). Records originate from a variety of sources and have been collated and maintained by Tony Mitchell-Jones at English Nature. The dataset represents an incomplete directory of sites, some of which are monitored annually as part of the National Dormouse Monitoring Programme. Only the most recent record for each site is included in this dataset; historical records are retained within the source database. The source data also include record source information and associated comments. Records are generally stored using six-figure British National Grid references, with the precision of the original observations unknown. All grid references represent the centre point of the site. 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 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=/ 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 mammals (see also specific species)(see also animals) muscardinus avellanarius dormice (dormouse) hazel dormouse (common dormouse) 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, 2004. 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. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. 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 1905-05-15 2004-06-01 Database Unknown Microsoft Access database; Welsh extract of the species data held in Recorder 6 (Dormouse Database - NE - Welsh Extract) 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 presence of dormice was determined using a variety of survey methods, all of which are recorded within the dataset. These methods provide differing levels of confidence in species identification: High confidence Live animal observed Dead animal recorded Confirmed dormouse-opened hazelnut Nest box occupancy Medium confidence Unconfirmed dormouse-opened hazelnut Nest located in vegetation Low confidence Reported sighting Other evidence Unknown evidence type Unconfirmed nest Records were obtained from three principal sources: Hazel nuts opened by dormice collected by members of the public during two Great Nut Hunts. All opened nuts were verified by Dr P. Morris. Occasional records submitted by individual observers. Site data from the National Dormouse Monitoring Programme, which typically included observations of live animals. Data collection was limited to records collected since 1990. Since that time, record acquisition has been sporadic and largely associated with the Great Nut Hunts and other projects that gathered dormouse records, such as hedgerow surveys. The majority of records are based on the identification of hazelnuts opened in a characteristic manner by dormice. These may be found throughout the year, although winter is generally the most productive period for surveys. Such evidence typically indicates the presence of dormice within the previous 12 months, depending on local conditions and the rate of shell decomposition. For this reason, the year of the record is generally more important than the precise date of observation. The presence of dormice was determined using a variety of survey methods, all of which are recorded within the dataset. These methods provide differing levels of confidence in species identification: High confidence Live animal observed Dead animal recorded Confirmed dormouse-opened hazelnut Nest box occupancy Medium confidence Unconfirmed dormouse-opened hazelnut Nest located in vegetation Low confidence Reported sighting Other evidence Unknown evidence type Unconfirmed nest Records were obtained from three principal sources: Hazel nuts opened by dormice collected by members of the public during two Great Nut Hunts. All opened nuts were verified by Dr P. Morris. Occasional records submitted by individual observers. Site data from the National Dormouse Monitoring Programme, which typically included observations of live animals. Data collection was limited to records collected since 1990. Since that time, record acquisition has been sporadic and largely associated with the Great Nut Hunts and other projects that gathered dormouse records, such as hedgerow surveys. The majority of records are based on the identification of hazelnuts opened in a characteristic manner by dormice. These may be found throughout the year, although winter is generally the most productive period for surveys. Such evidence typically indicates the presence of dormice within the previous 12 months, depending on local conditions and the rate of shell decomposition. For this reason, the year of the record is generally more important than the precise date of observation.