NRW_DS111176 eng NRW_DS115409 dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T11:14:48 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Intertidal Monitoring of Rocky Reefs in Pembrokeshire Marine Special Area of Conservation (SAC) 2007 Intertidal Monitoring of Rocky Reefs in Pembrokeshire Marine Special Area of Conservation (SAC) 2007 Gwaith monitro rhynglanwol ar riffiau creigiog yn ACA Sir Benfro Forol yn 2007 2007 CCW/ASML Pembrokeshire SAC rocky reef monitoring MRCCW1630000000C 2009-02-28 publication 4f4c4942-4343-5764-6473-313131313736 Pembrokeshire Marine Special Area of Conservation (SAC) is considered to be one of the best areas in the UK for marine reef habitats, a category within annex 1 of the Habitats Directive. This dataset comprises of the results of re-surveys of the six Milford Haven rocky intertidal transects first established in 2005, and the additional establishment of a similar transect at Nolton Haven in the north of Pembrokeshire. The purpose of this data capture was to repeat a set of six permanent monitoring sites representative of the rocky shore intertidal habitats within the Haven Waterway and last surveyed in 2005 and to present data on the current status of the sites. This data was also used to establish another site outside the Haven to the north at Nolton Haven. Pembrokeshire Marine Special Area of Conservation (SAC) is considered to be one of the best areas in the UK for marine reef habitats, a category within annex 1 of the Habitats Directive. This dataset comprises of the results of re-surveys of the six Milford Haven rocky intertidal transects first established in 2005, and the additional establishment of a similar transect at Nolton Haven in the north of Pembrokeshire. The purpose of this data capture was to repeat a set of six permanent monitoring sites representative of the rocky shore intertidal habitats within the Haven Waterway and last surveyed in 2005 and to present data on the current status of the sites. This data was also used to establish another site outside the Haven to the north at Nolton Haven. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en owner Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en custodian 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 originator Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en distributor notPlanned Habitats and biotopes theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme knotted wrack bedrock rocky reef Pembrokeshire Marine SAC ascophyllum nodosum Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC) intertidal Special Areas of Conservation (SAC) - SAC monitoring biogenic reef Milford Haven theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat characterisation theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml otherRestrictions There are no access restrictions to this data. NRW may release, publish or disseminate it freely no limitations otherRestrictions © 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. vector eng utf8 oceans biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision benthic boundary layer NRW Geographic Identifiers Collection 2024-01-01 publication SIR BENFRO - PEMBROKESHIRE -4.11789 -3.97589 53.22692 53.28244 2007-08-13 2007-08-17 Database [A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version [B] Excel Spreadsheets of data: - Pemb Quadrat Data 2007 V2.xls [C] Marine Recorder file: MRCCW1630000000C [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 dataset 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 publication This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false Fieldwork was carried out during five days of spring tides during 2007. A number of techniques used within the survey follow the same methodology as currently used within the MarClim monitoring programme and therefore are comparable to data from other sites around the Welsh coastline. The main surveys conducted were as follows: - Permanent quadrat recording: Relocated the six monitoring sites. At each site records were taken from upper, middle and lower shore heights, with four 1m x 1m quadrats relocated in each zone. Cell counts were made for conspicuous species. - Limpet counts and monitoring: Limpet abundance was recorded from 5 random cells within each quadrat. Up to 200 limpets were systematically selected within the middle zone at each site and the longest basal shell length of each was measured to construct population profiles. - Barnacle abundance: Percentage cover of barnacles was recorded from 5 random cells within each quadrat - Ascophyllum nodosum population structure: 50 Ascophyllum plants were randomly selected from the mid shore zone at Lawrenny Quay. The number of vesicles on the longest unbroken frond of each plant was recorded to provide an estimate of the average age of the plants on the shore. Fieldwork was carried out during five days of spring tides during 2007. A number of techniques used within the survey follow the same methodology as currently used within the MarClim monitoring programme and therefore are comparable to data from other sites around the Welsh coastline. The main surveys conducted were as follows: - Permanent quadrat recording: Relocated the six monitoring sites. At each site records were taken from upper, middle and lower shore heights, with four 1m x 1m quadrats relocated in each zone. Cell counts were made for conspicuous species. - Limpet counts and monitoring: Limpet abundance was recorded from 5 random cells within each quadrat. Up to 200 limpets were systematically selected within the middle zone at each site and the longest basal shell length of each was measured to construct population profiles. - Barnacle abundance: Percentage cover of barnacles was recorded from 5 random cells within each quadrat - Ascophyllum nodosum population structure: 50 Ascophyllum plants were randomly selected from the mid shore zone at Lawrenny Quay. The number of vesicles on the longest unbroken frond of each plant was recorded to provide an estimate of the average age of the plants on the shore.