Saltmarsh Extents
Helaethrwydd Morfeydd Heli
Polygon data layer showing the extent of Saltmarsh in Coastal and Transitional waters for use by both Flood and Coastal Risk Management and the implementation of Water Framework Directive. At the seaward end of the transect, the final demarcation will be where the saltmarsh vegetation cover has become so sparse it only covers 5% whether it is Upper, Mid, Lower or Pioneer saltmarsh.
Haen data polygon sy'n dangos helaethrwydd morfeydd heli mewn dyfroedd arfordirol a throsiannol ar gyfer defnydd Rheoli Perygl Llifogydd ac Erydu Arfordirol a gweithredu'r Gyfarwyddeb Fframwaith Dŵr. Ar ochr y trawslun atfôr, bydd y ffin derfynol lle y mae'r gorchudd planhigion morfa heli mor brin mae ond yn gorchuddio 5%, boed yn forfa heli uchaf, canolig, isaf neu gyntaf.
Mae maint morfa heli wedi cael ei ddehongli o ddelweddu digidol 10cm wrth 10cm o'r awyr. Ffin y forfa heli tua'r tir yw'r pwynt lle y mae'r parthau uchaf yn gorffen a phlanhigion daearol yn cychwyn (wrth droed morglawdd yn aml. Y marc yw lle y mae planhigion morfa heli'n fwy na 5% o'r gymuned sy'n ddaearol yn bennaf.
Datganiad priodoli
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
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DynodyddIdentifier
- NRW_DS116252
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Teitl AmgenAlternative Title
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- Saltmarsh extents.LYR
- Saltmarsh Extents AFA137
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Laith MetadataMetadata Language
- English
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Lineage
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Saltmarsh extent has been interpreted from 10 cm by 10 cm digital aerial imagery. The demarcation of the landward extent is the point at which the upper most zones gives way to terrestrial plants (often at the foot of a seawall). The mark is where saltmarsh plants become more than 5% of the predominantly terrestrial community.
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Dyddiad cyfeirnod y set ddata (Cyhoeddiad)Dataset Reference Date (Publication)
- 2017-03-01
Extent
Extent
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HydGeographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
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benthic boundary layer
Distribution
Dosbarthiad
Distribution
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Fformat - Math a DisgrifiadFormat Type and Description
-
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Geographic Information System
(
Unknown
)
- Specification
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ESRI Feature Class
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Geographic Information System
(
Unknown
)
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Lleolwr AdnoddauResource Locator
- Web Mapping Service ( OGC:WMS )
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Lleolwr AdnoddauResource Locator
- Download Data & Web Services ( WWW:LINK-1.0-http--link )
Quality
Ansawdd Data
Data quality
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Cwmpas AnsawddQuality Scope
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DatasetDataset
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CydymffurfiadConformity
- 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
- Explanation
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
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Lineage
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Saltmarsh extent has been interpreted from 10 cm by 10 cm digital aerial imagery. The demarcation of the landward extent is the point at which the upper most zones gives way to terrestrial plants (often at the foot of a seawall). The mark is where saltmarsh plants become more than 5% of the predominantly terrestrial community.
Keywords
Allweddair
Keywords
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2008-06-01
Allweddair
Keywords
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NRW Thesaurus
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- aerial photography (air photography) (aerial photographs)
- MARINE
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2025-01-08
Allweddair
Keywords
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SeaDataNet Parameter Discovery Vocabulary
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2024-06-19
Allweddair
Keywords
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IPSV Subjects List
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- Monitoring
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2020-11-18
Allweddair
Keywords
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NRW SMNR Keywords
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- Ecosystem (SMNR)
- Water Quality (SMNR)
- Water Resources (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Freshwater and Wetlands (SMNR)
- Animals, Plants and Other Organisms (SMNR)
- Management Areas (SMNR)
- Natural Resources (Incl. Features and Processes) (SMNR)
- Sea and Coast (SMNR)
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2024-06-26
Spatial Reference System
Content
Gwybodaeth Cynnwys
Content Information
Proffil CNC
NRW Profile
Elfennau CNC
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
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Math o GyfyngiadRestriction type
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Other restrictionsOther restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
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Cyfyngiadau DefnyddioUse constraints type
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Other restrictionsOther restrictions
- Other constraints
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© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
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Dynodydd FfeilFile Identifier
- 4f4c4942-4343-5764-6473-313136323532 XML
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Laith MetadataMetadata Language
- English
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Math o adnoddResource type
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DatasetDataset
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Dyddiad MetadataMetadata Date
- 2026-03-03T12:02:31.138Z
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Enw Safonol MetadataMetadata Standard Name
- NRW
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Fersiwn MetadataMetadata Standard Version
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1.0