NRW_DS115064 eng NRW_DS116805 dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T11:15:51 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Coastal Saltmarsh Monitoring Coastal Saltmarsh Monitoring Monitro Morfeydd Heli ACA 2006: Dolydd heli'r Iwerydd a Salicornia a phlanhigion unflwydd eraill sy'n cytrefu mewn llaid Special Area of Conservation (SAC) Saltmarsh Monitoring 2006: Atlantic Salt meadow and Salicornia and other annuals colonising mud feature CCW Saltmarsh Monitoring - Environmental Monitoring Report 37 LC0003850000006Q Across Wales saltmarsh monitoring Saltmarsh Monitoring in Carmarthen Bay and Estuaries, Glannau Mon, Pembrokeshire Marine and Pen Llyn a'r Sarnau SACs 2006: Atlantic Salt meadow and Salicornia and other annuals colonising mud features. 2016-08-17 publication 4f4c4942-4343-5764-6473-313135303634 Coastal saltmarshes in the UK comprise the upper, vegetated portions of intertidal mudflats, lying approximately between mean high water neap tides and mean high water spring tides. The characteristic vegetation consists of a limited number of halophytic (salt tolerant) species adapted to regular immersion by the tides. This project was commissioned by former Countryside Council for Wales (CCW) primarily to cover the condition monitoring of the Annex I saltmarsh habitats across four Welsh Special Areas of Conservation (SAC). The two habitats concerned are: - Atlantic salt meadows (referred to as ASM) - Annexe I code 1330. Atlantic salt meadows develop when halophytic vegetation colonises soft intertidal sediments of mud and sand in areas protected from strong wave action. This vegetation forms the middle and upper reaches of saltmarshes, where tidal inundation still occurs but with decreasing frequency and duration. A wide range of community types is represented and the saltmarshes can cover large areas, especially where there has been little or no enclosure on the landward side. The vegetation varies with climate and the frequency and duration of tidal inundation. - Salicornia and other annuals colonising mud (referred to as 'Salicornia') - Annexe I code 1310. This pioneer saltmarsh vegetation colonises intertidal mud and sandflats in areas protected from strong wave action and is an important precursor to the development of more stable saltmarsh vegetation. It develops at the lower reaches of saltmarshes where the vegetation is frequently flooded by the tide, and can also colonise open creek sides, depressions or pans within saltmarshes, as well as disturbed areas of upper saltmarshes. Coastal saltmarshes in the UK comprise the upper, vegetated portions of intertidal mudflats, lying approximately between mean high water neap tides and mean high water spring tides. The characteristic vegetation consists of a limited number of halophytic (salt tolerant) species adapted to regular immersion by the tides. This project was commissioned by former Countryside Council for Wales (CCW) primarily to cover the condition monitoring of the Annex I saltmarsh habitats across four Welsh Special Areas of Conservation (SAC). The two habitats concerned are: - Atlantic salt meadows (referred to as ASM) - Annexe I code 1330. Atlantic salt meadows develop when halophytic vegetation colonises soft intertidal sediments of mud and sand in areas protected from strong wave action. This vegetation forms the middle and upper reaches of saltmarshes, where tidal inundation still occurs but with decreasing frequency and duration. A wide range of community types is represented and the saltmarshes can cover large areas, especially where there has been little or no enclosure on the landward side. The vegetation varies with climate and the frequency and duration of tidal inundation. - Salicornia and other annuals colonising mud (referred to as 'Salicornia') - Annexe I code 1310. This pioneer saltmarsh vegetation colonises intertidal mud and sandflats in areas protected from strong wave action and is an important precursor to the development of more stable saltmarsh vegetation. It develops at the lower reaches of saltmarshes where the vegetation is frequently flooded by the tide, and can also colonise open creek sides, depressions or pans within saltmarshes, as well as disturbed areas of upper saltmarshes. 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 Central Environmental Surveys Woodley, Perth Road, Dubliner, Perthshire, FK15 0BU, England alan@environmentalsurverys.co.uk http://www.environmentalsurveys.co.uk/ 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 Species distribution theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme atlantic salt meadow saltmarsh (salt-marsh) (salt marsh) salicornia National Biodiversity Network [NBN] NBN Atlas Special Area of Conservation Monitoring glauco-puccinellietalia maritimae theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Habitat characterisation theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml Water Quality (SMNR) Management Areas (SMNR) Animals, Plants and Other Organisms (SMNR) Ecosystem (SMNR) Hydrological Processes (SMNR) Sea and Coast (SMNR) Water Resources (SMNR) Marine (SMNR) Coastal Margins (SMNR) Natural Resources (Incl. Features and Processes) (SMNR) Physical Geography (Physiography) (SMNR) theme NRW SMNR Keywords 2024-06-26 publication geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords otherRestrictions There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations otherRestrictions © 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. 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) -5.32489518 -3.73799676 51.48223734 53.31543885 2006-09-28 2006-10-11 Database [A] Report in pdf format (in Ffynnon) [B] Spreadsheets in xls format [C] GIS data as MapInfo tables [D] Performance Indicators in word format [E] Positive Species data available in Recorder 6 and on the NBN Gateway https://registry.nbnatlas.org/public/show/dp122 View and Download Data World Wide Web page information 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 areas of focus were within Special Areas of Conservation: Glannau Mon Cors Heli SAC, Pen Llyn a'r Sarnau SAC, Pembrokeshire Marine SAC, and, Carmarthen Bay and Estuaries SAC. Within each SAC a series of transects were established, totalling 39 transects across the four SACs. At each point along the transect presence and absence of a suite of species was used to determine the saltmarsh zone present. Additional information was recorded at each point such as presence of vehicle tracks, bare patches due to poaching damage, anoxic algal mats, Spartina anglica, grazing indicators, pollution damage, turf cutting and rare species. Targets were set for what constituted good condition on a point, transect and SAC level. For some sites estuary specific targets were also set. Surveys were conducted as follows: - Glannau Mon 28-30 Sept 2006 - Pen Llyn a'r Sarnau 1-6 Oct 2006 - Pembrokeshire Marine 7-11 Oct 2006 - Carmarthen Bay and Estuaries 17-20 Oct 2006 Confidence in this data is High and field work carried out by Central Environment Surveys (CES) under contract to the former Countryside Council for Wales. The areas of focus were within Special Areas of Conservation: Glannau Mon Cors Heli SAC, Pen Llyn a'r Sarnau SAC, Pembrokeshire Marine SAC, and, Carmarthen Bay and Estuaries SAC. Within each SAC a series of transects were established, totalling 39 transects across the four SACs. At each point along the transect presence and absence of a suite of species was used to determine the saltmarsh zone present. Additional information was recorded at each point such as presence of vehicle tracks, bare patches due to poaching damage, anoxic algal mats, Spartina anglica, grazing indicators, pollution damage, turf cutting and rare species. Targets were set for what constituted good condition on a point, transect and SAC level. For some sites estuary specific targets were also set. Surveys were conducted as follows: - Glannau Mon 28-30 Sept 2006 - Pen Llyn a'r Sarnau 1-6 Oct 2006 - Pembrokeshire Marine 7-11 Oct 2006 - Carmarthen Bay and Estuaries 17-20 Oct 2006 Confidence in this data is High and field work carried out by Central Environment Surveys (CES) under contract to the former Countryside Council for Wales.