4f4c4942-4343-5764-6473-313131313737 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 2026-10-19T09:51:47.04Z NRW 1.0 wel utf8 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 http://naturalresources.wales/ 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 rockpools Pembrokeshire Marine SAC Marine Recorder Specialised biotope Rockpools NRW Thesaurus 2026-08-27 geonetwork.thesaurus.local.theme.converted_nrw-keywords 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 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 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 Database Marine Recorder Online - Version 2.09.02 Marine Recorder 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.