Phase 2 Lowland Grassland Survey of Wales
Cyfnod 2 Arolwg o Laswelltir yr Iseldir yng Nghymru

  • English
  • wel
  • All

This project comprised of a detailed survey of plant communities in semi-natural lowland grassland vegetation across Wales. The purpose of this data capture was to characterise the semi-natural lowland grassland vegetation of Wales and to provide a systematic conservation assessment of the sites surveyed.


The survey locations and sites vary in size and complexity from small uniform hay-meadows of less than 1 ha, to extensive wet-dry pasture systems covering over 100 ha.


The datasets which were produced from this project have been extensively validated and verified. However, the main limitation of these datasets is their age. Habitat composition may change over time due to successional trends, agricultural treatments or even planned developments, which means that there is no guarantee that the information within these datasets is still representative on the ground today. However they do provide an important long-term catalogue of data which can be used to monitor changes to the grassland environments overtime.


The dataset contributes to JNCC's UK Lowland Grassland Database, held by the Lowland Grassland Lead Co-ordination Network at NE in Peterborough.


Where a grassland site has been resurveyed the most recent survey data is in the main Phase2 Grassland Survey datasets and the previous survey(s) have now been put into a folder called Archive [Historic]


GIS layer files within this dataset include: Site boundary (Sites), Vegetation polygons (veg), Mosaic Table, Mosaic Polygons (Mospolys), Quadrats, Photos and Target Note (Notes, points, polygons).


There is a DMS document explaining the GIS layers and data structure called P2 Grassland data structures in ArcGIS.

Survey Reports are also available from NRW.

Roedd y prosiect hwn yn cynnwys arolwg manwl o gymunedau planhigion yn llystyfiant glaswelltir rhannol naturiol yr iseldir ledled Cymru. Diben casglu'r data hwn oedd nodi llystyfiant glaswelltir rhannol naturiol iseldir Cymru a darparu asesiad cadwraeth systematig o'r safleoedd a arolygwyd. Mae'r setiau data a gynhyrchwyd yn sgil y prosiect hwn wedi'u cadarnhau a'u dilysu'n drwyadl. Fodd bynnag, prif gyfyngiad y setiau data hyn yw eu hoedran. Gall cyfansoddiad cynefinoedd newid dros amser o ganlyniad i dueddiadau olynol, triniaethau amaethyddol neu hyd yn oed ddatblygiadau arfaethedig, sy'n golygu nad oes unrhyw sicrwydd bod y setiau data hyn yn parhau i gynrychioli'r hyn sydd ar y tir heddiw.


Cydnabyddiaeth


Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl. Yn cynnwys data Arolwg Ordnans. Rhif Trwydded Arolwg Ordnans AC0000849444. Hawlfraint y Goron a Hawl Cronfa Ddata.

Identification

Dynodydd
Identifier
NRW_DS46160
Teitl Amgen
Alternative Title
  • PH2 Lowland Grassland mospolys (Archive).lyr
  • PH2 Lowland Grassland Sites (Archive).lyr
  • PH2 Lowland Grassland Veg (Archive).lyr
  • PH2 Lowland Grassland Mosaic (Archive).lyr
  • PH2 Lowland Grassland Mospolys.lyr
  • PH2 Lowland Grassland Notes Line.lyr
  • PH2 Lowland Grassland Notes Point.lyr
  • PH2 Lowland Grassland Notes Polygon.lyr
  • PH2 Lowland Grassland Photos.lyr
  • PH2 Lowland Grassland Quadrats.lyr
  • PH2 Lowland Grassland Sites.lyr
  • PH2 Lowland Grassland Veg.lyr
  • PH2 Lowland Grassland Mosaic.dbf
Laith Metadata
Metadata Language
English
Lineage

The sites identified for survey were identified mainly from the Phase 1 Habitat Survey. The areas surveyed included all forms of semi-natural neutral, acidic and calcareous grassland in lowland Wales, as well as wetter Molinia (purple-moor grass) and Juncus (rush) pasture communities and associated soligenous mires. Community definition follows the National Vegetation Classification (NVC). At each site, homogeneous stands of vegetation were identified, sampled with 2 x 2 m quadrats and mapped onto Ordnance Survey base maps or aerial photographs at a 1:5000 scale.
Additional Information

This dataset is compiled of numerous GIS layers, images and species datasets. This dataset is one of a series of major Phase 2 lowland habitat surveys including Natural Resources Wales (NRW)/Countryside Council for Wales (CCW) in house and commissioned surveys covering peatland, heathland, woodland and saltmarsh.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2026-05-27
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Countryside Council for Wales (CCW) -
Countryside Council for Wales, Maes y Ffynnon, 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


 
 

Distribution

Dosbarthiad
Distribution

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

    Specification

    [A] Summary report for each Area of Search (two sub-divided to make 14 when completed) available on paper or digitally (MS Word). Reports include an appendix containing quadrat data on paper or CD. [B] Site records held digitally on the 'Grasslands' copy of Recorder 6 database.Records include species records and Domin values from quadrats and summary of vegetation. (Previously this data was held in a Paradox database). [C] Spatial information (polygon and point data) held digitally in 5 MapInfo layers/tables: Site boundaries; vegetation polygons (with linked to non-geographic table of mosaics); location of quadrats; location of photos; location and details of target notes. Also hand-drawn habitat map of each site held on paper in 'site pack'. [D] Site pack containing site details, names and addresses of landowners; NVC assessment; site description; quadrat data. Held as paper copy and digitally in MS Word and Excel/Quattro Pro (quadrat data). [E] Site photographs held as hard copies only. A small batch is available as uncompressed files on DVD as jpgs

Lleolwr Adnoddau
Resource Locator
Download Data & Web Services ( WWW:LINK-1.0-http--link )
Lleolwr Adnoddau
Resource Locator
Web Mapping Service ( OGC:WMS )
 

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

The sites identified for survey were identified mainly from the Phase 1 Habitat Survey. The areas surveyed included all forms of semi-natural neutral, acidic and calcareous grassland in lowland Wales, as well as wetter Molinia (purple-moor grass) and Juncus (rush) pasture communities and associated soligenous mires. Community definition follows the National Vegetation Classification (NVC). At each site, homogeneous stands of vegetation were identified, sampled with 2 x 2 m quadrats and mapped onto Ordnance Survey base maps or aerial photographs at a 1:5000 scale.
 

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
  • Phase 2 Survey (Phase II)
  • habitat classification
  • geographical information systems (GIS)
  • habitat surveys (habitat monitoring)
  • vegetation classification
  • vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)
  • lowlands
  • plant communities
  • species inventory
  • lowland grassland
  • National Vegetation Classification (NVC)
  • vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-03-04
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

NRW SMNR Keywords
  • Ecosystem (SMNR)
  • Management Areas (SMNR)
  • Soil and Land (SMNR)
  • Sustainable Management of Natural Resources (SMNR)
  • Animals, Plants and Other Organisms (SMNR)
  • Soils (SMNR)
  • Natural Resources (Incl. Features and Processes) (SMNR)
  • Semi-natural Grasslands (SMNR)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-06-26
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

There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-3436313630 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Species Data on the NBN Atlas

NRW_DS116805
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-06-01T12:00:33.94Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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