4f4c4942-4343-5764-6473-313131313737 English NRW_DS114436 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T12:01:03.187Z NRW 1.0 wel British National Grid (EPSG::27700) Intertidal Monitoring of Rockpools in Pembrokeshire Marine Special Area of Conservation (SAC) 2007 Intertidal Monitoring of Rockpools in Pembrokeshire Marine Special Area of Conservation (SAC) 2007 Gwaith monitro rhynglanwol ar byllau glan mor yn ACA Sir Benfro Forol yn 2007 2007 CCW/ASML Pembrokeshire marine SAC rockpool monitoring Pen y Holt MRCCW1630000000B 2009-02-01 NRW_DS111177 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) was therefore required to report on a regular basis on whether features are in favourable conservation status. Pembrokeshire Marine Special Area of Conservation (SAC) was selected for eight Habitats Directive Annex I habitat types and five Annex II species. The SAC is considered to be one of the best areas in the UK for marine reef habitats, a category within the Annex I list. High habitat and biological diversity is of great importance throughout the site, particularly the best documented reefs habitat in the Milford Haven ria-estuary. This dataset includes the results of a survey of intertidal rockpools at Pen-y-Holt on the Castlemartin peninsula. 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) was therefore required to report on a regular basis on whether features are in favourable conservation status. Pembrokeshire Marine Special Area of Conservation (SAC) was selected for eight Habitats Directive Annex I habitat types and five Annex II species. The SAC is considered to be one of the best areas in the UK for marine reef habitats, a category within the Annex I list. High habitat and biological diversity is of great importance throughout the site, particularly the best documented reefs habitat in the Milford Haven ria-estuary. This dataset includes the results of a survey of intertidal rockpools at Pen-y-Holt on the Castlemartin peninsula. 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 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 Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme corallinales Special Areas of Conservation (SAC) - SAC monitoring intertidal coralline algae Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC) rockpools Pembrokeshire Marine SAC coral weed corallina officinalis NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat characterisation Habitat extent 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 2009. 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. Open Government Licence English oceans biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer SIR BENFRO - PEMBROKESHIRE -4.11789 -3.97589 53.22692 53.28244 2007-08-16 2007-08-18 Intertidal monitoring of rocky reefs in Milford Haven, Pembrokeshire Marine SAC Intertidal monitoring of rocky reefs in Milford Haven, Pembrokeshire Marine SAC in 2005 Geographic Information System Unknown [A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version [B] Excel Spreadsheets of data: - PenYholt_Rockpool_dataV2.xls - Rockpool Algal washings (plus algal weights).xls [C]Marine Recorder file: MRCCW1630000000B [D] A series of MapInfo GIS layers in MapInfo Native format (Tables). Translations from the MapInfo Tables are retained in ESRI Shapefile and MapInfo Interchange formats. [E] Photos 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 A well defined mid shore rock platform was identified from local knowledge. Within this area 10 pools were selected for survey, they all had to be at a similar height on shore, have a surface area of more than 0.5m2, be more than 5 cm deep and not more than 4 times as long as wide. A GPS fix was taken for each. Photographs were taken of each pool and basic measurement of depth and length were taken. The presence of typical pool sub-habitats and the influence of silt and scour were recorded as were the presence of typical pool taxa. Percentage cover estimates were made for algae and other cover species and presence of mobile animals and hydroids were recorded. A sample of Corallina officinalis algal turf was collected from each pool and from 4 locations in the Milford Haven. These samples were sent to a laboratory for post-survey identification of cryptic fauna. IECS was contracted in 2005 to establish a series of fixed quadrats across the rocky shore sites within the Milford Haven waterway (Hull et al., 2006). The 2005 survey provides baseline data for this project undertaken in 2007. A well defined mid shore rock platform was identified from local knowledge. Within this area 10 pools were selected for survey, they all had to be at a similar height on shore, have a surface area of more than 0.5m2, be more than 5 cm deep and not more than 4 times as long as wide. A GPS fix was taken for each. Photographs were taken of each pool and basic measurement of depth and length were taken. The presence of typical pool sub-habitats and the influence of silt and scour were recorded as were the presence of typical pool taxa. Percentage cover estimates were made for algae and other cover species and presence of mobile animals and hydroids were recorded. A sample of Corallina officinalis algal turf was collected from each pool and from 4 locations in the Milford Haven. These samples were sent to a laboratory for post-survey identification of cryptic fauna. IECS was contracted in 2005 to establish a series of fixed quadrats across the rocky shore sites within the Milford Haven waterway (Hull et al., 2006). The 2005 survey provides baseline data for this project undertaken in 2007.