4f4c4942-4343-5764-6473-313030353134 English NRW_DS110059 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-03T12:00:12.699Z NRW 1.0 wel Latitude and Longitude (EPSG::4326) Skomer Marine Conservation Zone ( MCZ ) - Zostera marina (Eelgrass) Monitoring Skomer Marine Conservation Zone ( MCZ ) - Zostera marina (Eelgrass) Monitoring GNF Ynys Sgomer - Monitro gwellt y gamlas Zostera marina Skomer Marine Conservation Zone ( MCZ ) formally a Marine Nature Reserve ( MNR ) - Zostera marina (Eelgrass) monitoring Eel grass bed 2006-12-31 NRW_DS100514 In 2015 Skomer Marine Nature Reserve changed designation to Skomer Marine Conservation Zone (MCZ). Skomer Marine Nature Reserve (MNR) was designated in 1990. Zostera marina is the only flowering plant within the British Isles that grows and produces seed entirely submerged by seawater. Zostera populations are highly productive habitats and they provide an important stabilising function for the mobile marine sediments. The maintenance of Zostera populations directly influences the associated algal and invertebrate communities that it supports, which are an important source of food for birds. Zostera marina is one of three seagrass species which are listed as nationally scarce and are included as a key habitat for conservation in the UK Biodiversity Action Plan 1994. The bed at North Haven, Skomer is one of only 4 in Wales and is the deepest. It is completely sub tidal and has been well surveyed. The purpose of this data capture was: 1. To map the boundaries of the Zostera marina bed. 2. To determine and identify changes in its distribution and abundance. 3. Record conspicuous organisms associated with the Zostera population. In 2015 Skomer Marine Nature Reserve changed designation to Skomer Marine Conservation Zone (MCZ). Skomer Marine Nature Reserve (MNR) was designated in 1990. Zostera marina is the only flowering plant within the British Isles that grows and produces seed entirely submerged by seawater. Zostera populations are highly productive habitats and they provide an important stabilising function for the mobile marine sediments. The maintenance of Zostera populations directly influences the associated algal and invertebrate communities that it supports, which are an important source of food for birds. Zostera marina is one of three seagrass species which are listed as nationally scarce and are included as a key habitat for conservation in the UK Biodiversity Action Plan 1994. The bed at North Haven, Skomer is one of only 4 in Wales and is the deepest. It is completely sub tidal and has been well surveyed. The purpose of this data capture was: 1. To map the boundaries of the Zostera marina bed. 2. To determine and identify changes in its distribution and abundance. 3. Record conspicuous organisms associated with the Zostera population. 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 Countryside Council for Wales (CCW). Skomer MNR Team Natural Resources Wales, Fishermans Cottage, Marloes, Haverfordwest, Pembrokeshire, SA62 3BJ, Wales enquiries@naturalresourceswales.gov.uk enquiries@naturalresourceswales.gov.uk Various including volunteer recorders c/o Natural Resources Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme zostera eelgrass zostera marina marine monitoring (see also marine surveys) North Haven, Skomer seagrasses (see also potamogetonaceae and hydrocharitaceae) Skomer MNR NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat extent Macroalgae and seagrass taxonomy-related counts 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 2007 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. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer St. Brides Bay Irish Sea SIR BENFRO - PEMBROKESHIRE -5.2804 -5.2795 51.73768 51.73853 1982-01-01 2006-12-31 -8 -1 Documents [A] Excel spreadsheet [B] GIS MapInfo layers 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 Permanent markers define the corners of a survey plot of 60 x 60 m2, in North Haven and lead lines marked every 5m are laid for the survey duration. Within the plot area transects are completed every 5 m. Every 5 metres along each transects Zostera shoot counts are taken in 6, 25 x 25 cm2 quadrats. The transects are continued outside the survey plot where Zostera is present. Quadrat counts are completed along these transects at 5 metres until no more Zostera is found. A boat based GPS unit was used to electronically record the boundary of the Zostera bed as divers with a surface marker buoy (SMB) swam the edge of the Zostera bed. Permanent markers define the corners of a survey plot of 60 x 60 m2, in North Haven and lead lines marked every 5m are laid for the survey duration. Within the plot area transects are completed every 5 m. Every 5 metres along each transects Zostera shoot counts are taken in 6, 25 x 25 cm2 quadrats. The transects are continued outside the survey plot where Zostera is present. Quadrat counts are completed along these transects at 5 metres until no more Zostera is found. A boat based GPS unit was used to electronically record the boundary of the Zostera bed as divers with a surface marker buoy (SMB) swam the edge of the Zostera bed.