Freshwater Bullhead Survey Data in Wales

Bullhead is listed under Annex II of the Habitat and Species Directive as a species of community interest and is a feature on the River Wye Afon Gwy and River Usk Afon Wysg Special Areas of Conservation (SACs) in Wales. Bullhead numbers have been declining across Europe in recent decades as a result of human activities. The purpose of this data capture was to monitor bullhead populations to assess whether SAC management adequately protects that species.

Identifier: NRW_DS107795

Alternative Title

Bullhead Monitoring, Wye and Usk Catchments 2007 - CCW- Report no. 818 CCW000280000000B.
Bullhead Monitoring, Dee Catchment 2001-2004- CCW - RoC Report no. 19 CCW0002800000006
Data Arolwg ar Bennau Lletwad

Metadata Language: English

Lineage: Relevant species abundance data was extracted from the overall spreadsheet supplied with the RoC Report. Where quantitative and semi-quantitative surveys were carried out on the same site at the same time then the semi-quantitative data has not been extracted (as this is a subset of the quantitative data). Historical data for 2001 - 2003: Data was collated from the North Wales Fisheries Monitoring Programme of 2001. A limited number of sites (approximately 12) are fished on an annual basis to obtain information and detect trends within the fish populations and catches. Bullhead populations were also recorded as part of the Dee Stock Assessment Programme on a selection of sites in 2004 and as part of work on the Eel Monitoring Programme at 3 sites in the Dee Catchment for 2004. All sites were surveyed using the electric fishing equipment in accordance with protocols described in the Environment Agency - Electric Fishing Theory and Practice Manual (1988). Two methodologies were employed either quantitative temporal data for sites surveyed annually or semi-quantitative spatial data for sites surveyed every 5 years. Three fishing runs were used for quantitative surveys and one for semi-quantitative surveys.

Additional Information: This published packaged dataset is made up of two separate datasets. Please see the following metadata entries for further information: 107797 Bullhead Monitoring for the Dee Catchment, 2004 108557 Bullhead Monitoring for the Usk and Wye Catchments, 2007

Dataset Reference Date (Publication): 2016-08-17

Temporal Extent

Begin date: 2001-01-01

End date: 2007-09-09

Topic category

Biota

Owner

Natural Resources Wales (NRW)

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

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

Originator

Various contractors

See Natural Resources Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

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

Extent

Geographic Extent: Wales (WLS)

Distribution

Format Type and Description

Database Database ()

Specification

Data is held in Recorder 6

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
Degree: false

Lineage: Relevant species abundance data was extracted from the overall spreadsheet supplied with the RoC Report. Where quantitative and semi-quantitative surveys were carried out on the same site at the same time then the semi-quantitative data has not been extracted (as this is a subset of the quantitative data). Historical data for 2001 - 2003: Data was collated from the North Wales Fisheries Monitoring Programme of 2001. A limited number of sites (approximately 12) are fished on an annual basis to obtain information and detect trends within the fish populations and catches. Bullhead populations were also recorded as part of the Dee Stock Assessment Programme on a selection of sites in 2004 and as part of work on the Eel Monitoring Programme at 3 sites in the Dee Catchment for 2004. All sites were surveyed using the electric fishing equipment in accordance with protocols described in the Environment Agency - Electric Fishing Theory and Practice Manual (1988). Two methodologies were employed either quantitative temporal data for sites surveyed annually or semi-quantitative spatial data for sites surveyed every 5 years. Three fishing runs were used for quantitative surveys and one for semi-quantitative surveys.

Keywords

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

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

Keywords

NRW Thesaurus

bullhead
cottus gobio
Special Area of Conservation Monitoring
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

Freshwater and Wetlands (SMNR)
Sustainable Management of Natural Resources (SMNR)
Ecosystem (SMNR)
Management Areas (SMNR)
Water Quality (SMNR)
Animals, Plants and Other Organisms (SMNR)
Natural Resources (incl. Features and Processes) (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: There are no access restrictions to this data. NRW may release, publish or disseminate it freely. This dataset does not contain sensitive species data. Names and addresses of landowners and others is restricted (Data Protection Act).

Use Constraints

Use constraints type: Other restrictions

Other constraints: © CNC/NRW and Environment Agency 2007 You may reproduce this dataset free of charge for non-commercial and internal business purposes in any format or medium, provided that you do so accurately, acknowledging both the source and NRW's and Environment Agency's copyright, and do not use it in a misleading context. To avoid using old information, we recommend that you obtain the latest version from the original source. NRW owns all intellectual property rights (including copyrights and database) to the collation and data originated by NRW. The Environment Agency (EA) holds the copyright to data originated by EA. NRW has permission to release this data on behalf of both parties.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313037373935 XML

Metadata Language: English

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

Resource type: Dataset

Metadata Date: 2024-05-31T09:38:31.794Z

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.

Freshwater Bullhead Survey Data in Wales

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