NRW_DS114459 eng NRW_DS114501 dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T12:01:24 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Intertidal Monitoring of Eelgrass (Zostera marina) Beds in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2010 Intertidal Monitoring of Eelgrass (Zostera marina) Beds in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2010 Gwaith Monitro Rhynglanwol - Zostera marina yn ACA Pen Llyn a'r Sarnau 2010 2010 CCW / ASML Pen Llyn a'r Sarnau SAC intertidal Zostera marina monitoring MRCCW16300000027 2011-04-30 publication 4f4c4942-4343-5764-6473-313134343539 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. Seagrass beds develop in intertidal and shallow subtidal areas on sands and muds. They may be found in marine inlets and bays but also in other areas, such as lagoons and channels, which are sheltered from significant wave action. Eelgrass (Zostera marina), is considered to be scarce (present in 16-100 ten km squares) is protected through the EC Habitats Directive and is classed as a UK Biodiversity Action Plan (BAP) Priority Habitat. Data is captured to support reporting on conservation status of the Pen Llyn air Sarnau SAC. 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. Seagrass beds develop in intertidal and shallow subtidal areas on sands and muds. They may be found in marine inlets and bays but also in other areas, such as lagoons and channels, which are sheltered from significant wave action. Eelgrass (Zostera marina), is considered to be scarce (present in 16-100 ten km squares) is protected through the EC Habitats Directive and is classed as a UK Biodiversity Action Plan (BAP) Priority Habitat. Data is captured to support reporting on conservation status of the Pen Llyn air Sarnau SAC. 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 Species distribution Habitats and biotopes theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme zostera marina intertidal eelgrass theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat extent 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 2011 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 10 eng utf8 biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision benthic boundary layer NRW Geographic Identifiers Collection 2024-01-01 publication Wales (WLS) -4.57526448 -4.50251063 52.92947436 52.95800477 2010-07-11 2010-07-16 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: PLAS 2010 Sabellaria Data.xls PLAS 2010 Porth Dinllaen Zostera.xls PLAS 2010 Photo Log.xls [C] A series of MapInfo GIS layers in MapInfo Native format (Tables): Translations from the above MapInfo Tables are retained in ESRI Shapefile and MapInfo Interchange formats. [D] Marine Recorder files [E] Photographs of the site, sediment characteristics, core contents and quadrats. 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 The Zostera marina beds were mapped using the tracking facility on the GPS receivers, although on 14th July the tide failed to expose more than the uppermost plants in the diffuse bed. Digital photographs were also taken at points of interest during all Z. marina surveys. Whilst the perimeter of the Porth Dinllaen bed was being mapped, several pairs of surveyors walked north/south transects along the bed on the beach. The surveyors assessed quadrats at regular intervals noting Zostera density, substratum type, abundance of core taxa and presence/ absence of lesser taxa. The transects surveyed at Porth Dinllaen were worked using handheld GPS receivers. All survey completed by professional and experienced marine field surveyors. Data quality and confidence considered high. Intertidal SAC monitoring, previous work was also carried out in 2009 and 2008. The Zostera marina beds were mapped using the tracking facility on the GPS receivers, although on 14th July the tide failed to expose more than the uppermost plants in the diffuse bed. Digital photographs were also taken at points of interest during all Z. marina surveys. Whilst the perimeter of the Porth Dinllaen bed was being mapped, several pairs of surveyors walked north/south transects along the bed on the beach. The surveyors assessed quadrats at regular intervals noting Zostera density, substratum type, abundance of core taxa and presence/ absence of lesser taxa. The transects surveyed at Porth Dinllaen were worked using handheld GPS receivers. All survey completed by professional and experienced marine field surveyors. Data quality and confidence considered high. Intertidal SAC monitoring, previous work was also carried out in 2009 and 2008.