NRW_DS109889 eng NRW_DS108800 dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T12:00:54 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Saltmarsh Features at Pen Llyn a'r Sarnau Special Area of Conservation (SAC) - Dyfi 1993 Saltmarsh Features at Pen Llyn a'r Sarnau Special Area of Conservation (SAC) - Dyfi 1993 Nodweddion morfa heli ACA Pen Llyn a'r Sarnau- Dyfi 1993 NVC Phase 2 survey of the Dyfi 1993 1993-12-31 publication 4f4c4942-4343-5764-6473-313039383839 Use of the National Vegetation Classification (NVC) as a basis for community definition in the saltmarsh habitats of Pen Llyn a'r Sarnau - Dyfi 1993. Dyfi Junction saltmarsh survey. The main objective of the survey was to use the National Vegetation Classification to describe and map the unusual brackish water saltmarsh communities as well as characterising some of the transitional vegetation types and the glycophytic communities present. Use of the National Vegetation Classification (NVC) as a basis for community definition in the saltmarsh habitats of Pen Llyn a'r Sarnau - Dyfi 1993. Dyfi Junction saltmarsh survey. The main objective of the survey was to use the National Vegetation Classification to describe and map the unusual brackish water saltmarsh communities as well as characterising some of the transitional vegetation types and the glycophytic communities present. 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 Countryside Council for Wales (CCW) Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ 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 vegetation surveys (vegetation monitoring)(see also biologicalsurveys) vegetation classification Pen Llyn a'r Sarnau SAC National Vegetation Classification (NVC) Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC) vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys) Dyfi (Dovey) theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat extent Habitat characterisation theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml otherRestrictions The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions). no limitations otherRestrictions © CNC/NRW and © Crown copyright [1993]. All rights reserved. Natural Resources Wales, AC0000849444. Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right vector eng utf8 environment biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision benthic boundary layer NRW Geographic Identifiers Collection 2024-01-01 publication Wales (WLS) -3.928726796 -3.911078437 52.56325152 52.57497769 1993-01-01 1993-12-31 Geographic Information System a) GIS products- Vegetation polygons (MapInfo Table) - Site Boundaries (MapInfo Table) - Survey Boundary (MapInfo Table) - Vegetation NVC summaries (MapInfo Table) Documents b) Paper report 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 Standard NVC survey methodology. All the homogenous stands of different maritime vegetation were identified and mapped. A 4m2 quadrat was then used to estimate the cover abundance (Domin scale) of all taxa found within selected stands of each vegetation type. Computer software package Vespan II was used to store and handle the quadrat data. Data collected by trained personnel, digitised by contractors, validated by NRW, corrections made by contractors, validated again by NRW, corrections made in-house in conjunction with relevant salt marsh specialist. NRW commissioned survey which contributes to an NVC Saltmarsh survey collation. Standard NVC survey methodology. All the homogenous stands of different maritime vegetation were identified and mapped. A 4m2 quadrat was then used to estimate the cover abundance (Domin scale) of all taxa found within selected stands of each vegetation type. Computer software package Vespan II was used to store and handle the quadrat data. Data collected by trained personnel, digitised by contractors, validated by NRW, corrections made by contractors, validated again by NRW, corrections made in-house in conjunction with relevant salt marsh specialist. NRW commissioned survey which contributes to an NVC Saltmarsh survey collation.