4f4c4942-4343-5764-6473-313135303732 English NRW_DS109834 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T12:00:37.39Z NRW 1.0 wel British National Grid (EPSG::27700) Intertidal Monitoring of Sabellaria Reef in Cardigan Bay Special Area of Conservation (SAC) 2008 Intertidal Monitoring of Sabellaria Reef in Cardigan Bay Special Area of Conservation (SAC) 2008 Monitro Rhynglanwol: Sabellaria alveolata yn ACA Bae Caerfyrddin 2008 2008 CCW / ASML Cardigan Bay SAC Sabellaria Reef Monitoring MRCCW16300000016 2010-03-31 NRW_DS115072 The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. Honeycomb reef worm Sabellaria alveolata is a sedentary, tube-dwelling polychaete most commonly found on rocky substrata in the lower shore and shallow subtidal zones of marine and estuarine areas. The honeycomb reef worm is a UK BAP Priority Habitat (BAP habitats are now Habitats of Principal Importance/Priority Habitats). In Cardigan Bay SAC specific areas of interest include the biogenic Sabellaria reef. Sabellaria reef is considered vulnerable to coastal development, sea defence construction and heavy trampling. The purpose of this data capture was to re-survey the quadrat monitoring sites established in 2007. The descriptive transect surveys are not repeated in 2008. Data quality and confidence is considered high as all survey completed by professional and experienced marine field surveyors. The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. Honeycomb reef worm Sabellaria alveolata is a sedentary, tube-dwelling polychaete most commonly found on rocky substrata in the lower shore and shallow subtidal zones of marine and estuarine areas. The honeycomb reef worm is a UK BAP Priority Habitat (BAP habitats are now Habitats of Principal Importance/Priority Habitats). In Cardigan Bay SAC specific areas of interest include the biogenic Sabellaria reef. Sabellaria reef is considered vulnerable to coastal development, sea defence construction and heavy trampling. The purpose of this data capture was to re-survey the quadrat monitoring sites established in 2007. The descriptive transect surveys are not repeated in 2008. Data quality and confidence is considered high as all survey completed by professional and experienced marine field surveyors. 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 Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme polychaete worms sabellaria alveolata Cardigan Bay SAC intertidal honeycomb worm biogenic reef NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat extent Habitat characterisation 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. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer SIR CEREDIGION - CEREDIGION -4.34192885 -4.25760878 52.21170584 52.24923105 2008-05-05 2008-05-08 Intertidal SAC monitoring Cardigan Bay SAC May 2008 Documents [A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. [B] Excel Spreadsheets of data: - Card 2008 Data Sabellaria and Rockpools v2.xls [C] Marine Recorder file [MRCCW16300000016] [D] A series of MapInfo GIS layers in MapInfo Native format (Tables): 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 Surveys of Sabellaria reefs in the SAC were carried out for CCW in 2004 (Boyes et al. 2008). Additional mapping of Sabellaria reef extent at Aberaeron was carried out by CMACS Ltd. (sub-contracted by Atkins Ltd.) In August 2006 as part of an Environmental Assessment for proposed Aberaeron North Beach Coastal Defence Work (unpublished data provided by Atkins Ltd.). In 2007, ASML and CCW further developed Intertidal SAC monitoring methodologies for monitoring the Sabellaria reefs and monitoring sites were established and surveyed in May 2007 (Moore 2009).The extent and measure of the quality of the Sabellaria reef was evaluated using a GPS track and quadrat surveys, respectively. Sabellaria density, physical attributes and other conspicuous species were recorded from replicate quadrat stations to provide a repeatable method of evaluation. Surveys of Sabellaria reefs in the SAC were carried out for CCW in 2004 (Boyes et al. 2008). Additional mapping of Sabellaria reef extent at Aberaeron was carried out by CMACS Ltd. (sub-contracted by Atkins Ltd.) In August 2006 as part of an Environmental Assessment for proposed Aberaeron North Beach Coastal Defence Work (unpublished data provided by Atkins Ltd.). In 2007, ASML and CCW further developed Intertidal SAC monitoring methodologies for monitoring the Sabellaria reefs and monitoring sites were established and surveyed in May 2007 (Moore 2009).The extent and measure of the quality of the Sabellaria reef was evaluated using a GPS track and quadrat surveys, respectively. Sabellaria density, physical attributes and other conspicuous species were recorded from replicate quadrat stations to provide a repeatable method of evaluation.