4f4c4942-4343-5764-6473-313631343830 English NRW_DS161478 Natural Resources Wales Maes y Ffynnon Bangor LL57 2DW Wales opendata@cyfoethnaturiolcymru.gov.uk 2026-03-03T12:27:28.905Z NRW 1.0 wel WGS 84 (EPSG:4326) Impacts of bait collection on Welsh Marine Protected Areas (MPAs): Boulder Turning Impacts of bait collection on Welsh Marine Protected Areas (MPAs): Boulder Turning 2024 NRW North Wales boulder turning survey (ef12b4e8-dae9-403a-9fcf-2cfde55f7e26) 2025-03-06 2026-01-15 NRW_DS161480 Survey to assess the impacts of three bait collection methods on Welsh MPAs - bait digging (Sites : Angle Bay, Four Mile Bridge, Penmon - Beaumaris), boulder turning (Penmon-Beaumaris, West of Great Orme), crab shelters (Deganwy, Bangor Pier). Samples taken from control and impact sites. Infaunal cores, sediment cores, benthic megafauna (i.e. razor clam, cockle) quadrat, worm cast count, seagrass coverage, boulder epifauna, boulder turning classification. This metadata covers the results of boulder turning monitoring at Penmon-Beaumaris and West of Great Orme. Survey to assess the impacts of three bait collection methods on Welsh MPAs - bait digging (Sites : Angle Bay, Four Mile Bridge, Penmon - Beaumaris), boulder turning (Penmon-Beaumaris, West of Great Orme), crab shelters (Deganwy, Bangor Pier). Samples taken from control and impact sites. Infaunal cores, sediment cores, benthic megafauna (i.e. razor clam, cockle) quadrat, worm cast count, seagrass coverage, boulder epifauna, boulder turning classification. This metadata covers the results of boulder turning monitoring at Penmon-Beaumaris and West of Great Orme. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en ABP Marine Environmental Research Ltd Suite B, Waterside House, Town Quay, Southampton, SO14 2AQ, England enquiries@abpmer.co.uk http://www.abpmer.co.uk/ 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 Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme marine protected areas(marine consultation areas)(sensitive marine areas)seealso marine conservation&marine nature reserve boulders 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 on this data. NRW may release, publish or disseminate it freely. noLimitations © CNC/NRW. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English biota Wales (WLS) -4.2513 -3.6315 53.1725 53.3488 SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation littoral 2024-03-10 2024-03-13 Gihwala, K.N., West, V.A., Frost, N.J, Robbins, K. 2024. Impacts of bait collection on Welsh Marine Protected Areas: Year two survey report. NRW Evidence Report, Report No: 862, 266pp, ABPmer, Southampton Database Unknown Raw Survey Data Documents Unknown NRW Evidence Report in word or pdf format. https://registry.nbnatlas.org/public/show/dp122 WWW:LINK-1.0-http--link Download and view data 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 Boulder turning monitoring was carried out at Penmon-Beaumaris and west of Great Orme between 10th and 13th March 2024. Survey methods used a comparative sampling strategy between areas that are exposed to boulder turning activities (i.e. impact) and areas that experience no boulder turning activities (i.e. control). Suitable control areas were defined by minimal evidence of bait collection activities, comparable habitat types (e.g. sediments and algal coverage on boulders) and comparable shore heights (mid-low). A transect sampling method was used to qualitatively assess the intensity and extent of boulder turning at each site. Four transects were placed horizontally (using a tape measure) across the mid (defined by the presence of Fucus vesiculosus) and low shore (defined by the presence of Fucus serratus), within each impact and control area at each site. Transects were 20 m in length and were spaced at least 20-50 m from each other. Along each transect the number of ‘suitable’ turned vs un-turned boulders (those that fitted through a 0.5 x 0.5 m quadrat and were not embedded in sediment), was counted and each boulder was assigned a classification (Very Recently Turned, Recently Turned, Historically Turned or Not Turned). In addition, five boulders per transect (within both control and impact areas) were analysed in-situ with 5 minutes assigned per boulder. The information gathered included GPS location and boulder size; photographs of each boulder surface and faunal organisms observed on either surface. Boulder turning monitoring was carried out at Penmon-Beaumaris and west of Great Orme between 10th and 13th March 2024. Survey methods used a comparative sampling strategy between areas that are exposed to boulder turning activities (i.e. impact) and areas that experience no boulder turning activities (i.e. control). Suitable control areas were defined by minimal evidence of bait collection activities, comparable habitat types (e.g. sediments and algal coverage on boulders) and comparable shore heights (mid-low). A transect sampling method was used to qualitatively assess the intensity and extent of boulder turning at each site. Four transects were placed horizontally (using a tape measure) across the mid (defined by the presence of Fucus vesiculosus) and low shore (defined by the presence of Fucus serratus), within each impact and control area at each site. Transects were 20 m in length and were spaced at least 20-50 m from each other. Along each transect the number of ‘suitable’ turned vs un-turned boulders (those that fitted through a 0.5 x 0.5 m quadrat and were not embedded in sediment), was counted and each boulder was assigned a classification (Very Recently Turned, Recently Turned, Historically Turned or Not Turned). In addition, five boulders per transect (within both control and impact areas) were analysed in-situ with 5 minutes assigned per boulder. The information gathered included GPS location and boulder size; photographs of each boulder surface and faunal organisms observed on either surface.