4f4c4942-4343-5764-6473-313631353332 English NRW_DS114501 Natural Resources Wales Maes y Ffynnon Bangor LL57 2DW Wales opendata@cyfoethnaturiolcymru.gov.uk 2026-05-21T13:16:56.016Z NRW 1.0 wel WGS 84 (EPSG:4326) Intertidal Monitoring of Sabellaria alveolata in Cardigan Bay Special Areas of Conservation (SACs) 2025 Intertidal Monitoring of Sabellaria alveolata in Cardigan Bay Special Areas of Conservation (SACs) 2025 Monitro rhynglanwol Sabellaria alveolata yn Ardaloedd Cadwraeth Arbennig (ACAoedd) Bae 2025 NRW Cardigan Bay Special Area of Conservation (SAC) Sabellaria Reef Monitoring (2d2cc2ad-c399-48ab-a62d-20d2832c07d1) Monitro Riffiau Sabellaria Ardal Cadwraeth Arbennig (ACA) Bae Ceredigion CNC 2025 2026-03-12 2026-05-21 NRW_DS161532 The Habitats Directive requires the management of Special Areas of Conservation (SACs) to achieve favourable conservation status for habitats and species listed in Annex I and Annex II. Under Regulation 9a of the Habitats Regulations (formerly Article 17), the conservation status of these features must be reported every six years. In Wales, Natural Resources Wales (NRW) is responsible for this reporting. Sabellaria alveolata (honeycomb reef worm) forms biogenic reef structures on rocky substrates in intertidal and shallow subtidal marine and estuarine environments. Dense aggregations create reef formations that are important habitat features within SACs. This dataset provides information on the extent and condition of Sabellaria alveolata reef at surveyed locations. The Habitats Directive requires the management of Special Areas of Conservation (SACs) to achieve favourable conservation status for habitats and species listed in Annex I and Annex II. Under Regulation 9a of the Habitats Regulations (formerly Article 17), the conservation status of these features must be reported every six years. In Wales, Natural Resources Wales (NRW) is responsible for this reporting. Sabellaria alveolata (honeycomb reef worm) forms biogenic reef structures on rocky substrates in intertidal and shallow subtidal marine and estuarine environments. Dense aggregations create reef formations that are important habitat features within SACs. This dataset provides information on the extent and condition of Sabellaria alveolata reef at surveyed locations. 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 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 Annex 1 habitats biogenic reef sabellaria alveolata NRW Thesaurus 2026-03-04 geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat characterisation Habitat extent 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 environment Wales (WLS) -4.6972 -3.6582 52.0267 52.5624 SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation infralittoral SeaVoX Vertical Co-ordinate Coverages 2013-02-05 creation littoral 2025-04-27 2025-04-28 5 -20 Database Unknown Delimited Unknown Geographic Information System Unknown ESRI Feature Class Image Unknown https://registry.nbnatlas.org/public/show/dp122 WWW:LINK-1.0-http--link 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 The data were collected as part of Natural Resources Wales’ programme of feature condition monitoring to support Regulation 9a reporting. Surveys were undertaken at specific locations to measure the extent of Sabellaria alveolata reef and to assess reef quality. Sabellaria alveolata reefs were identified and mapped based on field survey observations, with reef structures characterised by aggregations of sand- and shell-based tubes forming hummocks, sheets or more complex biogenic formations. The dataset is derived from targeted surveys undertaken by experienced staff, and confidence in the data is considered high. However, the data represent a snapshot in time and are dependent on survey coverage and methodology. The data were collected as part of Natural Resources Wales’ programme of feature condition monitoring to support Regulation 9a reporting. Surveys were undertaken at specific locations to measure the extent of Sabellaria alveolata reef and to assess reef quality. Sabellaria alveolata reefs were identified and mapped based on field survey observations, with reef structures characterised by aggregations of sand- and shell-based tubes forming hummocks, sheets or more complex biogenic formations. The dataset is derived from targeted surveys undertaken by experienced staff, and confidence in the data is considered high. However, the data represent a snapshot in time and are dependent on survey coverage and methodology.