4f4c4942-4343-5764-6473-313135303635 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 2024-12-09T12:33:09.329Z NRW 1.0 wel British National Grid (EPSG::27700) Intertidal Monitoring of Muddy Gravel, Sediments and Rocky Shore in Pen Llyn a'r Sarnau Special Area of Conservation (SAC) 2008 Intertidal Monitoring of Muddy Gravel, Sediments and Rocky Shore in Pen Llyn a'r Sarnau Special Area of Conservation (SAC) 2008 Arolwg rhynglanw o Raean Lleidiog, Gwaddod a Glan Mor Creigiog y ACA Pen Llyn a'r Sarnau 2008 2008 CCW / ASML Pen Llyn a'r Sarnau SAC Dwyryd/Glaslyn MRCCW1630000000E 2010-10-31 NRW_DS115065 Pen Llyn a'r Sarnau Special Area of Conservation (SAC) is designated for five Annex 1 habitats and four subsidiary ones. The major features of intertidal interest are Estuaries and their constituent mudflats, sandflats and reefs, Large shallow inlets and bays with intertidal Zostera beds, populations of the shingle dwelling amphipod Pectenogammarus, piddocks in clay and lower shore boulder communities and Reefs, particularly biogenic reefs of Sabellaria alveolata. Specific areas of interest for are the intertidal sediments and rocky areas in the Glaslyn and Dwyryd Estuaries. There were two purposes for this data capture. The first was related to sediments. Sediment data was collected to test monitoring methodology, establish sites for long term monitoring and collect baseline and reference data. The second was related to the Data collected on the rocky shore to establish sand levels at key rocky areas - Port Meirion, Ynys Gifftan and Cei Ballast. Pen Llyn a'r Sarnau Special Area of Conservation (SAC) is designated for five Annex 1 habitats and four subsidiary ones. The major features of intertidal interest are Estuaries and their constituent mudflats, sandflats and reefs, Large shallow inlets and bays with intertidal Zostera beds, populations of the shingle dwelling amphipod Pectenogammarus, piddocks in clay and lower shore boulder communities and Reefs, particularly biogenic reefs of Sabellaria alveolata. Specific areas of interest for are the intertidal sediments and rocky areas in the Glaslyn and Dwyryd Estuaries. There were two purposes for this data capture. The first was related to sediments. Sediment data was collected to test monitoring methodology, establish sites for long term monitoring and collect baseline and reference data. The second was related to the Data collected on the rocky shore to establish sand levels at key rocky areas - Port Meirion, Ynys Gifftan and Cei Ballast. 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 Aquatic Survey and Monitoring Ltd (ASML) Whitfield Brow, Bollihope, Frosterley, Weardale, Co. Durham, DL13 2SZ, England tom@aquatic-environments.co.uk http://www.marineseen.com/aquatic_survey_and_monitoring.htm Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en sd">Species distribution Species distribution GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme intertidal mudflats sandflats rocky reef estuarine rock Glaslyn Dwyryd estuary biotopes NRW Thesaurus NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords Macroalgae and seagrass taxonomy-related counts Zoobenthos taxonomy-related counts Habitat characterisation SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2021-01-06 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. 400.0 English biota SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer GWYNEDD - GWYNEDD -4.17054843 -4.03716729 52.87783429 52.87783429 2008-10-18 2008-10-20 Across Wales intertidal SAC monitoring Pen Llyn a'r Sarnau SAC : August 2008 Documents [A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. [B] MapInfo GIS layer in MapInfo Native format (Tables): - Position of the sample stations. [C] Excel spreadsheets with station details and species data [D] Photographs of the stations [E] Marine Recorder file[MRCCW1630000000E] 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 false In situ recording of sediment characteristics were undertaken across the whole area of the sediment flats. This data capture included epibiota, infauna and granulometry sampling. A collection of samples from ten stations were then analysed in the laboratory for infauna and sediment granulometry. Quadrat recording on three rocky shores was undertaken. One muddy gravel habitat site was visited at Carreg y Defaid but the tide failed to expose enough of the bank to allow a detailed survey. A species list was generated and some specimens were collected for identification. Data quality and confidence was considered high, as all surveys were completed by professional and experienced marine field surveyors. The methodology for the in situ grid stations was an adaptation of Phase I survey techniques developed for an earlier survey of the Mawddach Estuary (Wyn and Cooke, 2001). Monitoring was also previously carried out in 2007. All survey completed by professional and experienced marine field surveyors. Data quality and confidence considered high. In situ recording of sediment characteristics were undertaken across the whole area of the sediment flats. This data capture included epibiota, infauna and granulometry sampling. A collection of samples from ten stations were then analysed in the laboratory for infauna and sediment granulometry. Quadrat recording on three rocky shores was undertaken. One muddy gravel habitat site was visited at Carreg y Defaid but the tide failed to expose enough of the bank to allow a detailed survey. A species list was generated and some specimens were collected for identification. Data quality and confidence was considered high, as all surveys were completed by professional and experienced marine field surveyors. The methodology for the in situ grid stations was an adaptation of Phase I survey techniques developed for an earlier survey of the Mawddach Estuary (Wyn and Cooke, 2001). Monitoring was also previously carried out in 2007. All survey completed by professional and experienced marine field surveyors. Data quality and confidence considered high.