Coastal Saltmarsh Monitoring
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.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115064
- Alternative Title
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- 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.
- Monitro Morfeydd Heli ACA 2006: Dolydd heli'r Iwerydd a Salicornia a phlanhigion unflwydd eraill sy'n cytrefu mewn llaid
- Metadata Language
- English
- Lineage
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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.
- Dataset Reference Date (Publication)
- 2016-08-17
Temporal Extent
- Begin date
- 2006-09-28
- End date
- 2006-10-11
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
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Vertical Extent
- Medin Extent Keyword
- benthic boundary layer
Distribution
Distribution
- Format Type and Description
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Database
()
- Specification
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[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
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Database
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- Resource Locator
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View and Download Data
World Wide Web page
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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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.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- saltmarsh (salt-marsh) (salt marsh)
- atlantic salt meadow
- glauco-puccinellietalia maritimae
- salicornia
- Special Area of Conservation Monitoring
- NBN Atlas
- National Biodiversity Network [NBN]
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Habitat characterisation
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Keywords
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NRW SMNR Vocabulary
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- Animals, Plants and Other Organisms (SMNR)
- Natural Resources (incl. Features and Processes) (SMNR)
- Coastal Margins (SMNR)
- Ecosystem (SMNR)
- Water Quality (SMNR)
- Sea and Coast (SMNR)
- Marine (SMNR)
- Hydrological Processes (SMNR)
- Water Resources (SMNR)
- Management Areas (SMNR)
- Physical Geography (physiography) (SMNR)
- Type
- Theme
Citation
- Date (Revision)
- 2023-12-27
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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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
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© 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.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313135303634 XML
- Metadata Language
- English
- Parent Identifier
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Natural Resources Wales (NRW) Species Data on the NBN Atlas
NRW_DS116805
- Resource type
- Dataset
- Metadata Date
- 2024-12-09T12:37:32.636Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0