Pearl Mussel Distribution for Habitats Directive (Council Directive 92/43/EEC) Reporting under Article 17.
Citation
Natural Resources Wales (2025). Pearl Mussel Distribution for Habitats Directive (Council Directive 92/43/EEC) Reporting under Article 17.. Occurrence dataset https://doi.org/10.15468/keemst accessed via GBIF.org on 2025-05-21.Description
This dataset comprises of a collation of records of pearl mussels from Welsh rivers. This dataset is a compilation of numerous records from different sources complied for Habitats Directive Article 17 reporting, related to freshwater pearl mussels Margaritifera margaritifera. Every six years, Member States of the European Union are required (by Article 17 of the Directive) to report on implementation of the Habitats Directive. The reporting format set by the European Commission requires a separate analysis for each species and each habitat in each biogeographic region which that country covers. This dataset comprises of Environment Agency and Countryside Council for Wales surveys.
Purpose
The aim of this collation has been to ensure that the 10 km distribution maps on the NBN accurately reflect the known position of this species. Records have been compiled with this in mind and hence no attempt has been made to collate every single record for each 10km square within the designated time period.
Sampling Description
Quality Control
Most have an exact date but some are in the following format MM-YYYY or YYYY only.Method steps
Taxonomic Coverages
Geographic Coverages
Bibliographic Citations
Contacts
originatorNatural Resources Wales
metadata author
Natural Resources Wales
distributor
NBN Atlas
27 Old Gloucester St, Holborn
London
WC1N 3AX
London
GB
email: admin@nbnatlas.org
NRW NBN Administrator
administrative point of contact
position: editor
email: nbnadmin@cyfoethnaturiolcymru.gov.uk