Phase 2 Saltmarsh Survey of Wales

  • English
  • wel
  • All

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 habitats 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 salt marsh specialist.

Identification

Dynodydd
Identifier
NRW_DS108800
Teitl Amgen
Alternative Title
  • PH2_Saltmarsh_Vegetation.LYR
  • PH2_Saltmarsh_Target_Notes.LYR
  • PH2_Saltmarsh_Surveys.LYR
  • PH2_Saltmarsh_Sites.LYR
  • PH2_Saltmarsh_Quadrats_font.LYR
  • PH2_Saltmarsh_Photo_points.LYR
  • PH2_Saltmarsh_Mosaics_none.LYR
  • Arolwg Cam 2 Morfeydd Heli Cymru
  • NVC Phase 2 Saltmarsh Survey of Wales
Laith Metadata
Metadata Language
English
Lineage

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.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2022-08-04
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Various -
Enquiries Unit, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
inapplicable
 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ( )

    Specification

    Each individual survey has a paper report- see separate metadata entries. [A] Species data held in paradox database (plans to transfer to Recorder in 2009/2010) [B] An all Wales collated GIS product including the following spatial information: - Vegetation polygons (ArcGIS) - Mosaic information (ArcGIS) - Site Boundaries (ArcGIS) - Survey Boundary (ArcGIS) - Quadrat points (ArcGIS) - Target Note points (ArcGIS) - Photo points (ArcGIS) - Vegetation NVC summaries (MapInfo Table)

Lleolwr Adnoddau
Resource Locator
View and Download

World Wide Web page

Lleolwr Adnoddau
Resource Locator
Web Service

World Wide Web page

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
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

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

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.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • species inventory
  • habitat surveys (habitat monitoring)
  • habitat mapping
  • Phase 2 Survey (Phase II)
  • vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)
  • saltmarsh (salt-marsh) (salt marsh)
  • National Vegetation Classification (NVC)
  • vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
  • vegetation classification
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-06-13
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Habitat extent
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-03-28
Code
geonetwork.thesaurus.external.theme.rdf+xml

Allweddair
Keywords

NRW SMNR Keywords
  • Animals, Plants and Other Organisms (SMNR)
  • Coastal Margins (SMNR)
  • Sustainable Management of Natural Resources (SMNR)
  • Sea and Coast (SMNR)
  • Management Areas (SMNR)
  • Soil and Land (SMNR)
  • Soils (SMNR)
  • Ecosystem (SMNR)
  • Natural Resources (Incl. Features and Processes) (SMNR)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-06-19
Code
geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

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.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© 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.
 

Attribution Statement

Other constraints
Open Government Licence (OGL)
 

Licence

Other constraints
Open Government Licence (OGL)
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313038383030 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T13:10:05.265Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  GIS and Spatial Data Team -
Natural Resources Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
Pwynt Cyswllt
pointOfContact
  Data Services Team -
Natural Resources Wales (NRW), Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 
 

Publishing Body

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