Pearl Mussel Distribution for Habitats Directive (Council Directive 92/43/EEC) Reporting under Article 17

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. 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.

Identifier: NRW_DS116443

Alternative Title

Dosbarthiad Misglod Perlog ar gyfer adroddiadau’r Gyfarwyddeb Cynefinoedd (Cyfarwyddeb y Cyngor 92/43/EEC) dan Erthygl 17
Pearl Mussel distribution, Wales (2004-2012)

Metadata Language: English

Lineage: Surveys have been undertaken as part of monitoring programmes and Wales-wide distribution surveys. Records are taken from CCW’s biological database and the Environment Agency (Wales) GIS system and relate to in-house and contracted surveys of Welsh rivers carried out in the past eight years. Surveys have been undertaken as part of monitoring programmes and Wales-wide distribution surveys. The majority of records in this dataset are collated with six or eight figure grid-references, although where surveys have reported on individual river sections then four-figure references may have been used. The dataset represents the distribution of the pearl mussel across Wales during the data capture period.

Additional Information: Most have an exact date but some are in the following format MM-YYYY or YYYY only.

Dataset Reference Date (Publication): 2012-06-30

Temporal Extent

Begin date: 2003-06-01

End date: 2012-06-30

Topic category

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Countryside Council for Wales (CCW)

Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

http://naturalresourceswales.gov.uk/splash?orig=/

Originator

Environment Agency Wales (EA Wales)

Cambria House, 29 Newport Road, Cardiff, CF24 0TP, Wales

www.environment-agency.gov.uk

Extent

Geographic Extent: Wales (WLS)

Distribution

Format Type and Description

Documents ()

Specification

Excel spreadsheet available to download from NBN Gateway

Resource Locator

View and Download Data

World Wide Web page

Data quality

Quality Scope: Dataset

Conformity: 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
Explanation: This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree: false

Lineage: Surveys have been undertaken as part of monitoring programmes and Wales-wide distribution surveys. Records are taken from CCW’s biological database and the Environment Agency (Wales) GIS system and relate to in-house and contracted surveys of Welsh rivers carried out in the past eight years. Surveys have been undertaken as part of monitoring programmes and Wales-wide distribution surveys. The majority of records in this dataset are collated with six or eight figure grid-references, although where surveys have reported on individual river sections then four-figure references may have been used. The dataset represents the distribution of the pearl mussel across Wales during the data capture period.

Keywords

GEMET - INSPIRE themes, version 1.0

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

Habitats Directive (Directive 92/43/EEC) (EC Habitats Directive) (European Community Habitats Directive)
pearl mussels
margaritifera margaritifera
freshwater biology
FRESHWATER
NBN Atlas
National Biodiversity Network [NBN]

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

NRW SMNR Vocabulary

Animals, Plants and Other Organisms (SMNR)
Natural Resources (incl. Features and Processes) (SMNR)
Ecosystem (SMNR)
Sustainable Management of Natural Resources (SMNR)
Water Quality (SMNR)
Management Areas (SMNR)
Freshwater and Wetlands (SMNR)

Type: Theme

Citation

Date (Revision): 2023-12-27

Code: geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: Part of this dataset is sensitive and restricted. The sensitive data is as follows - location of Pearl Mussels. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Data Distribution Team. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale.

Use Constraints

Use constraints type: Other restrictions

Other constraints: © CNC/NRW 2008 Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence or equivalent. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale. At a spatial scale at which the records are considered non-sensitive then there are no use restrictions on this data, including for commercial and research purposes. 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.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313136343433 XML

Metadata Language: English

Parent Identifier: Natural Resources Wales (NRW) Species Data on the NBN Atlas
NRW_DS116805

Resource type: Dataset

Metadata Date: 2025-03-07T17:31:22.019Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Pearl Mussel Distribution for Habitats Directive (Council Directive 92/43/EEC) Reporting under Article 17

Identification

Temporal Extent

Extent

Extent

Distribution

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body