Bullhead Monitoring for the Dee Catchment, 2004

Bullhead is listed under Annex II of the Habitat and Species Directive as a "species of community interest". Bullhead numbers have been declining across Europe in recent decades as a result of human activities. Bullhead is a designated feature on the River Dee and Bala Lake / Afon Dyfrdwy a Llyn Tegid Special Area of Conservation (SAC) in Wales. The purpose of this data capture was to assess bullhead abundances and population structure throughout the Special Area of Conservation (SAC) area. Population data for the fish bullhead (Cottus gobio) collected in the River Dee Catchment since 2001 and additional quantitative and semi-quantitative survey data to assess bullhead abundance from 2004.

Dynodydd: NRW_DS107797

Teitl Amgen

Bullhead Monitoring, Dee Catchment 2001-2004- CCW - RoC Report no. 19 CCW0002800000006
Monitro Llyfrothennod Dalgylch Afon Dyfrdwy, 2004
Bullhead Monitoring - CCW - RoC Report no.19

Laith Metadata: English

Datganiad: Relevant species abundance data was extracted from the overall spreadsheet supplied with the RoC Report. Where quantitive and semi-quantitive surveys were carried out on the same site at the same time then the semi-quantitive data has not been extracted (as this is a subset of the quantitive data). Historical data for 2001 - 2003: Data was collated from the North Wales Fisheries Monitoring Programme of 2001. A limited number of sites (approx 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 quantitive temporal data for sites surveyed annually or semi-quantitive spatial data for sites surveyed every 5 years. Three fishing runs were used for quantitive surveys and one for semi-quantitive surveys.

Gwybodaeth ychwanegol: Rivers Ecologist, NRW Further information, including information on population structure is available in CCW Review of Consents Report no. 19. This dataset has been available to download on the NBN Gateway - See Metadata Unique Resource for full details: 107795

Dyddiad cyfeirnod y set ddata (Cyhoeddiad): 2004-10-31

Ystod amser

Dyddiad cychwyn: 2001-01-01

Dyddiad gorffen: 2004-10-31

Categori pwnc

Biota

Perchennog

Natural Resources Wales (NRW)

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

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

Cychwynnwr

Various

Enquiries Unit, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

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

Cychwynnwr

Environment Agency (EA)

Millbank Tower, 25th Floor, 21//24 Millbank, London, SW1P 4XL, England

http://www.environment-agency.gov.uk/

Cychwynnwr

Countryside Council for Wales (CCW)

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

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

Cychwynnwr

Natural Resources Wales (NRW)

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

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

Rhychwant

Hyd: POWYS - POWYS

Hyd: GWYNEDD - GWYNEDD

Hyd: SIR Y FFLINT - FLINTSHIRE

Hyd: SIR DDINBYCH - DENBIGHSHIRE

Hyd: CONWY - CONWY

Hyd: WRECSAM - WREXHAM

Map representing the geographic extent of the dataset

Fformat - Math a Disgrifiad

Database Database ()

Math

Data Archived under Project Number 295 Media Number 1198 [A] Published report held on Ffynnon DCT-10-027856 [B] Excel spreadsheets. [C] Map Info files of Bullhead Density [D] ArcGIS Files of Bullhead Density.

Ansawdd Data

Cwmpas Ansawdd: Dataset

Cydymffurfiad: 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
Eglurhad
Gradd: false

Datganiad: Relevant species abundance data was extracted from the overall spreadsheet supplied with the RoC Report. Where quantitive and semi-quantitive surveys were carried out on the same site at the same time then the semi-quantitive data has not been extracted (as this is a subset of the quantitive data). Historical data for 2001 - 2003: Data was collated from the North Wales Fisheries Monitoring Programme of 2001. A limited number of sites (approx 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 quantitive temporal data for sites surveyed annually or semi-quantitive spatial data for sites surveyed every 5 years. Three fishing runs were used for quantitive surveys and one for semi-quantitive surveys.

Allweddair

GEMET - INSPIRE themes, version 1.0

Species distribution

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2008-06-01

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

Allweddair

NRW Thesaurus

cottus gobio
bullhead
Special Areas of Conservation (SAC) - SAC monitoring
Dee estuary

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2023-12-31

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

Cod: British National Grid (EPSG::27700)

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Teitlau cysylltiedig CNC: River Dee candidate special area of conservation bullhead survey 2004

Cyfyngiadau

Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus

Math o Gyfyngiad: Other restrictions

Cyfarwyddeb Cyfyngiadau Mynediad

Cyfyngiadau: no limitations

Testun cyfyngiadau mynediad

Cyfyngiadau eraill: There are no access restrictions to this data. NRW may release, publish or disseminate it freely.

Defnyddiwch gyfyngiadau

Cyfyngiadau Defnyddio: Other restrictions

Cyfyngiadau eraill: © CNC/NRW 2004 There are no use restrictions on this data. 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

Dynodydd Ffeil: 4f4c4942-4343-5764-6473-313037373937 XML

Laith Metadata: English

Dynodydd Rhiant: Freshwater Bullhead Survey Data in Wales
NRW_DS107795

Math o adnodd: Dataset

Dyddiad Metadata: 2024-05-31T09:37:23.489Z

Enw Safonol Metadata: NRW

Fersiwn Metadata: 1.0

Pwynt Cyswllt

Master Reference Data Team

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

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

Corff Cyhoeddi

Mynediad i'r Porth

Mynediad llawn i'r porth a'r metadata.

Bullhead Monitoring for the Dee Catchment, 2004

Dull adnabod

Ystod amser

Rhychwant

Rhychwant

Dosbarthiad

Ansawdd

Ansawdd Data

Allweddeiriau

Allweddair

Dyfyniad

Allweddair

Dyfyniad

System Cyfeirio Gofodol

Cynnwys

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Cyfyngiadau

Cyfyngiadau

Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus

Cyfarwyddeb Cyfyngiadau Mynediad

Testun cyfyngiadau mynediad

Defnyddiwch gyfyngiadau

Metadata

Metadata

Corff Cyhoeddi