NRW_DS111800 eng dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T14:28:00 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Common Scoter Survey (Melanitta nigra) in Liverpool Bay (2000-2001) Common Scoter Survey (Melanitta nigra) in Liverpool Bay (2000-2001) Arolwg o for-hwyaid duon ym Mae Lerpwl 2000-2001 2001-08-31 publication 4f4c4942-4343-5764-6473-313131383030 The Common Scoter is strongly migratory and often travels considerable distances over land making brief stop-overs on inland waters. It is currently listed under the Birds Directive (Annex 2) Convention on Migratory Species (Bonn Convention Appendix 2) and is featured on the UK red-listed bird of conservation concern (for the breeding population) and a UK Biodiversity Action Plan (BAP) Priority Species for conservation and is a Schedule 1 species under the Wildlife and Countryside Act 1981. The majority of wintering common scoter recorded around the Welsh coast around Carmarthen Bay, North Cardigan Bay and the North Wales coast, which in combination are thought to hold 30-36,000 birds. A further 10 sites regularly support 1000 or more birds. These are no known major concentrations away from these 13 sites, although this may be a consequence of the lack of appropriate survey. Large numbers of birds are recorded at several sites in April and May and there are significant post-breeding gatherings at three sites, including Carmarthen Bay, from August onwards. Casual observations suggest that these sites are not moulting grounds for the majority of birds. However there maybe as yet undetected moulting sites further offshore, as is the case in Denmark. The purpose of this data capture was to record the numbers and distribution of common scoter in the Liverpool Bay; to determine the accuracy of the two survey methods (aerial and land-based) and the correlation between the two; and to provide recommendations on future monitoring of common scoter in Liverpool bay. The Common Scoter is strongly migratory and often travels considerable distances over land making brief stop-overs on inland waters. It is currently listed under the Birds Directive (Annex 2) Convention on Migratory Species (Bonn Convention Appendix 2) and is featured on the UK red-listed bird of conservation concern (for the breeding population) and a UK Biodiversity Action Plan (BAP) Priority Species for conservation and is a Schedule 1 species under the Wildlife and Countryside Act 1981. The majority of wintering common scoter recorded around the Welsh coast around Carmarthen Bay, North Cardigan Bay and the North Wales coast, which in combination are thought to hold 30-36,000 birds. A further 10 sites regularly support 1000 or more birds. These are no known major concentrations away from these 13 sites, although this may be a consequence of the lack of appropriate survey. Large numbers of birds are recorded at several sites in April and May and there are significant post-breeding gatherings at three sites, including Carmarthen Bay, from August onwards. Casual observations suggest that these sites are not moulting grounds for the majority of birds. However there maybe as yet undetected moulting sites further offshore, as is the case in Denmark. The purpose of this data capture was to record the numbers and distribution of common scoter in the Liverpool Bay; to determine the accuracy of the two survey methods (aerial and land-based) and the correlation between the two; and to provide recommendations on future monitoring of common scoter in Liverpool bay. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en owner Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en custodian Lancashire Wildlife Trust Wildlife Trust for Lancashire, Manchester and North Merseyside, Berkeley Drive, Bamber Bridge, Preston, Lancashire, PR5 6BY info@lancswt.org.uk http://www.lancswt.org.uk/ originator Casella Science and Environment Limited PO Box 13, Runcorn, Chesire, WA7 4UH, England Unknown <!-- No web site --> originator Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en distributor notPlanned Species distribution theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme aerial surveys melanitta nigra Liverpool Bay common scoter (black scoter) theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Bird taxonomy-related abundance per unit area of surface theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml otherRestrictions There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations otherRestrictions © CNC/NRW 2001. 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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. vector 1000 eng utf8 biota NRW Geographic Identifiers Collection 2024-01-01 publication England and Wales (EAW) NRW Geographic Identifiers Collection 2024-01-01 publication SIR YNYS MON - ISLE OF ANGLESEY NRW Geographic Identifiers Collection 2024-01-01 publication Caernarvonshire (49) NRW Geographic Identifiers Collection 2024-01-01 publication SIR DDINBYCH - DENBIGHSHIRE NRW Geographic Identifiers Collection 2024-01-01 publication SIR Y FFLINT - FLINTSHIRE -4.12757249 -2.97727468 53.2832401 53.95058018 SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation water column 2000-11-30 2001-02-28 Documents The report and individual chapters are held as Word and Excel Files. Delimited Excel spreadsheets. Geographic Information System avl files and .sbx files. Database Data is held as .dbf files dataset 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 publication This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false Four aerial surveys were completed, monthly between November 2000 and February 2001. Synchronous land-based counts were made on some dates, although complete coverage from all planned observation points was never achieved. Aerial surveys covered between 702-1142 km2 whilst land-based observations were over an estimated sea area of between 60-120 km2 Four aerial surveys were completed, monthly between November 2000 and February 2001. Synchronous land-based counts were made on some dates, although complete coverage from all planned observation points was never achieved. Aerial surveys covered between 702-1142 km2 whilst land-based observations were over an estimated sea area of between 60-120 km2