4f4c4942-4343-5764-6473-313135303737 English NRW_DS114501 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T12:27:36.492Z NRW 1.0 wel British National Grid (EPSG::27700) Collection Activity and Crab Survey in the Menai Strait (2009) Collection Activity and Crab Survey in the Menai Strait (2009) Gweithgarwch casglu ac arolwg crancod yn Afon Menai 2009 2009 CCW Menai Strait and Conwy Bay SAC collecting activity and crab survey MRCCW3000000005D 2010-11-30 NRW_DS115077 Special Areas of Conservation (SACs) are strictly protected sites designated under the EC Habitats Directive. In the Menai Strait and Conwy Bay SAC the relevant Annex I intertidal habitat features are Mudflats and sandflats not covered by seawater at low tide and Reefs. Specific areas of interest include areas of tide-swept bedrock and boulders and areas of tide-swept Fucus serratus on mixed sediment along the Menai Strait. In previous studies it was noted that a portion of the boulders had been turned by bait collectors. Surveys to assess bait collection activity and crab counts were carried out along the length of the shoreline of the Menai Strait using student volunteers. Data quality and confidence considered high. Special Areas of Conservation (SACs) are strictly protected sites designated under the EC Habitats Directive. In the Menai Strait and Conwy Bay SAC the relevant Annex I intertidal habitat features are Mudflats and sandflats not covered by seawater at low tide and Reefs. Specific areas of interest include areas of tide-swept bedrock and boulders and areas of tide-swept Fucus serratus on mixed sediment along the Menai Strait. In previous studies it was noted that a portion of the boulders had been turned by bait collectors. Surveys to assess bait collection activity and crab counts were carried out along the length of the shoreline of the Menai Strait using student volunteers. Data quality and confidence considered high. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Countryside Council for Wales (CCW). Marine and Freshwater Ecosystems Group Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@ccw.gov.uk http://www.ccw.gov.uk Various including volunteer recorders c/o Natural Resources Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution Land use GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme boulders crabs activities peelers littorina littorea turning winkles bait digging (bait collecting) underboulder NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Zoobenthos taxonomic abundance SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW 2010. 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. English biota GWYNEDD - GWYNEDD -4.34261482 -4.17303216 53.12011362 53.2225892 SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation benthic boundary layer 2009-06-25 2009-06-26 The associated report for this dataset is as follows: Moore, J., Brazier. P., Hobbs, E. 2009 Intertidal SAC monitoring Menai Strait and Conwy Bay SAC June 2009. CCW Marine Monitoring Report 82. Bangor. Intertidal SAC monitoring Menai Strait and Conwy Bay SAC : June 2009 Intertidal SAC monitoring Menai Strait and Conwy Bay SAC June 2008 Across Wales intertidal SAC monitoring Menai Strait and Conwy Bay SAC september 2007 Database Marine Recorder file [MRCCW3000000005D] Documents Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. Geographic Information System MapInfo GIS layer in MapInfo Native format (Tables): - Positions of survey blocks. Image Photographs of boulders Delimited Excel spreadsheets for activity and crab counts 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 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The intertidal zone of each site was divided into approximately 200 m long sections and given 'shore block' codes. In each shore block the amount of collecting activity was observed for 10 minutes and recorded; winkle collectors and peeler collectors were noted as well as any unknown activities. The boulder turning frequency was also recorded for each shore block. In addition, the surveyors worked along the lower-mid shore evaluating the number of turned boulders; 30 boulders were checked in each shore block. Crab counts were also recorded; juvenile Carcinus maenas, adult Carcinus maenas and juvenile Cancer pagurus. The intertidal zone of each site was divided into approximately 200 m long sections and given 'shore block' codes. In each shore block the amount of collecting activity was observed for 10 minutes and recorded; winkle collectors and peeler collectors were noted as well as any unknown activities. The boulder turning frequency was also recorded for each shore block. In addition, the surveyors worked along the lower-mid shore evaluating the number of turned boulders; 30 boulders were checked in each shore block. Crab counts were also recorded; juvenile Carcinus maenas, adult Carcinus maenas and juvenile Cancer pagurus.