4f4c4942-4343-5764-6473-313031383731 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2024-12-09T12:37:55.027Z NRW 1.0 wel British National Grid (EPSG::27700) Collated Saltmarsh Survey of Wales (1994 - 2004) Collated Saltmarsh Survey of Wales (1994 - 2004) Collated Saltmarsh Derived GIS Layer Arolwg o Gorsydd Heli Cymru 2004-12-31 NRW_DS101871 This, now static, dataset was collected to monitoring the progress of saltmarsh development across Wales, between 1994 and 2002. The dataset comprises of a collation of biological data recorded across different saltmarsh environments. This dataset is now archived, as more up-to-date information is available about saltmarsh habitats across Wales. However this still forms an important baseline dataset in which to monitor the health and species richness across saltmarshes and overtime. This will help inform conservation management requirements for the important saltmarsh habitats. The more up-to-date surveys can be found in the following metadata entry: 114725 Priority Marine Habitats of Wales (coastal saltmarsh). This, now static, dataset was collected to monitoring the progress of saltmarsh development across Wales, between 1994 and 2002. The dataset comprises of a collation of biological data recorded across different saltmarsh environments. This dataset is now archived, as more up-to-date information is available about saltmarsh habitats across Wales. However this still forms an important baseline dataset in which to monitor the health and species richness across saltmarshes and overtime. This will help inform conservation management requirements for the important saltmarsh habitats. The more up-to-date surveys can be found in the following metadata entry: 114725 Priority Marine Habitats of Wales (coastal saltmarsh). 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) Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW 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 Habitats and biotopes GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme saltmarsh (salt-marsh) (salt marsh) saltmarsh ecology saltmarsh vegetation habitat mapping habitat management NRW Thesaurus NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat extent Habitat characterisation SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2021-01-06 geonetwork.thesaurus.external.theme.rdf+xml 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 © CNC/NRW and © Crown copyright 2004. 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. English biota SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 benthic boundary layer Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 1994-01-01 2004-12-31 Priority Marine Habitats of Wales: Coastal Saltmarsh Geographic Information System [A] Mapinfo: Phase 2 quadrat data and polygons GIS 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 false The structure of this data layer was updated in 2011 as part of a project to develop a series of priority and protected spatial marine habitat layers. The survey methodology used to collect this dataset either followed the National Vegetation Classification (NVC) Phase 2 methodology or intertidal Phase 1 methodology. The habitats were mapped using GIS against either OS maps or Aerial photographs. The NVC Saltmarsh layer was identified as most accurate of the three layers collated and therefore forms the base of the collation. All polygons extracted from the Phase 1 Intertidal Saltmarsh data that intersect with the NVC polygons were erased. Where 2 NVC survey overlap the most recently surveyed is taken as the most accurate. All polygons from the 1:50,000 OS map that intersect with either the NVC Saltmarsh layer or the extracted Phase 1 Intertidal Saltmarsh were also erased. The structure of this data layer was updated in 2011 as part of a project to develop a series of priority and protected spatial marine habitat layers. The survey methodology used to collect this dataset either followed the National Vegetation Classification (NVC) Phase 2 methodology or intertidal Phase 1 methodology. The habitats were mapped using GIS against either OS maps or Aerial photographs. The NVC Saltmarsh layer was identified as most accurate of the three layers collated and therefore forms the base of the collation. All polygons extracted from the Phase 1 Intertidal Saltmarsh data that intersect with the NVC polygons were erased. Where 2 NVC survey overlap the most recently surveyed is taken as the most accurate. All polygons from the 1:50,000 OS map that intersect with either the NVC Saltmarsh layer or the extracted Phase 1 Intertidal Saltmarsh were also erased.