4f4c4942-4343-5764-6473-313038383030 eng dataset GIS and Spatial Data Team 0300 065 3000 Natural Resources Wales Maes y Ffynnon gis.helpdesk@ccw.gov.uk pointOfContact Data Services Team 0300 065 3000 Natural Resources Wales (NRW) Maes y Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk pointOfContact 2023-08-22 Gemini 2.2 urn:ogc:def:crs:EPSG::BNG OGP Phase 2 Saltmarsh Survey of Wales NVC Phase 2 Saltmarsh Survey of Wales Arolwg Cam 2 Morfeydd Heli Cymru PH2_Saltmarsh_Mosaics_none.LYR PH2_Saltmarsh_Photo_points.LYR PH2_Saltmarsh_Quadrats_font.LYR PH2_Saltmarsh_Sites.LYR PH2_Saltmarsh_Surveys.LYR PH2_Saltmarsh_Target_Notes.LYR PH2_Saltmarsh_Vegetation.LYR 2022-08-04 publication 2008-10-15 revision 108800 https://naturalresources.wales Coastal saltmarshes in the UK comprise of the upper, vegetated portions of intertidal mudflats, lying approximately between mean high water neap tides and mean high water spring tides. Saltmarshes are usually restricted to comparatively sheltered locations in five main physiographic situations: in estuaries, in saline lagoons, behind barrier islands, at the heads of sea lochs, and on beach plains. The development of saltmarsh vegetation is dependent on the presence of intertidal mudflats. Communities are additionally affected by differences in climate, the particle size of the sediment and, within estuaries, by decreasing salinity in the upper reaches. This National Vegetation Classification (NVC) Phase 2 project and corresponding datasets are a collation of mapped saltmarsh habi tats across Wales. This data was collected to provide an overview of saltmarshes across Wales. In addition to this it has helped contribute towards the monitoring of Special Area of Conservation, which includes: Carmarthen Bay and Estuaries / Bae Caerfyrddin ac Aberoedd; Glannau Môn: Cors heli / Anglesey Coast: Saltmarsh; Pembrokeshire Marine / Sir Benfro Forol; Pen Llyn a`r Sarnau / Lleyn Peninsula and the Sarnau; Dee Estuary / Aber Dyfrdwy and Severn Estuary / Môr Hafren. The surveys were conducted between 1990 and 2003. The dataset has been extensively validated and verified. Data collected by trained personnel, digitised by contractors, validated by NRW KMG, corrections made by contractors, validated again by NRW KMG, corrections made in-house in conjunction with relevant s alt marsh specialist. Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk owner Various 01248 385500 Enquiries Unit Maes y Fynnon LL57 2DW enquiries@naturalresourceswales.gov.uk originator notPlanned Documents Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2023-08-23 publication Biodiversity Marine environment Nature conservation Integrated Public Sector Vocabulary (IPSV) 2023-08-23 publication © CNC/NRW and © Crown copyright. All rights reserved. Natural Resources Wales, AC0000849444 [2016]. © Hawlfraint y Goron. Cedwir pob hawl. Cyfoeth Naturiol Cymru AC0000849444 [2016] This dataset contains 'simple derived data' which is jointly owned by NRW and the Ordnance Survey in the form of polygon vector data- vegetation, site boundary and vegetation mosaic MapInfo tables. Third parties seeking to re-use this dataset require a NRW licence. It allows reproduction, dissemination and re-use 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. otherRestrictions This dataset contains 'simple derived data' which is jointly owned by NRW and the Ordnance Survey in the form of polygon GIS tables. NRW may release, publish or disseminate these components freely, providing recipients are made aware of use restrictions (see below). Data not derived from OS products have no access or use restrictions. Third party recipients may reproduce, disseminate and re-use 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. To avoid using old information, we recommend that the latest version is obtained from the original source. eng environment boundaries biota ISO3166 Countries 2023-08-23 publication Wales (WLS) -5.77774100 -2.60886500 51.24082900 53.51306100 1993-08-24 2003-08-06 Data Services Team 0300 065 3000 Natural Resources Wales (NRW) Maes y Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk distributor https://datamap.gov.wales/layergroups/geonode:nrw_phase_2_salt_marsh View and Download https://datamap.gov.wales/capabilities/layergroup/3605/?access_token=i61nd1X0RwdwAgQrGW0sqAsWxBMiwx&ows_service=wms Web Service dataset This dataset is one of a series of major Phase 2 lowland habitat surveys including former Countryside Council for Wales’ (CCW) in-house and commissioned surveys covering grassland, woodland, heathland, peatland and sand dunes. Dataset is a collation of 14 NRW commissioned NVC surveys carried out on saltmarshes across Wales. Individual surveys utilised standard NVC Phase 2 survey methodology and community definition follows the National Vegetation Classification. Habitats were mapped using GIS against either OS maps or aerial photographs. Target notes and quadrat species lists were compiled.