Phase 2 Lowland Grassland Mosaic Polygons
This is a spatial dataset of grassland mosaic polygons. These polygons are a gridsquares, coloured in chequerboard fasion according to Vegetation_type, for display purposes only. The records where collected during the Phase 2 Lowland Grassland Survey of Wales ( 1987 - 2004 ). Digitising this datasets allowed the detailed survey of plant communities in semi-natural lowland grassland vegetation to be accessible more widely. The purpose of this data capture was to characterise the semi-natural lowland grassland vegetation of Wales, and provide a systematic conservation assessment of the sites surveyed. 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 survey was started by Nature Conservancy Council (NCC) and continued since 1991 by Countryside Council for Wales (CCW). CCW now forms part of Natural Resources Wales (NRW). The main limitation of the data are the age of records. Habitat composition may change over time due to successional trends and also through agricultural treatments or even planned developments. A record of a vegetation type in the data is therefore no guarantee that it is still extant on the ground.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS100358
- Alternative Title
-
- PH2_Lowland_Grassland_mospolys.LYR
- Polygonau Mosaig Glaswelltir yr Iseldir Cam 2
- Phase2 Lowland Grassland MosPolys Survey (1987-2004)
- Metadata Language
- English
- Lineage
-
The records are from surveys conducted on 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 1:5000 scale.
- Dataset Reference Date (Publication)
- 2006-04-26
Temporal Extent
- Begin date
- 1987-04-01
- End date
- 2004-12-31
- Topic category
-
- Farming
- Environment
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
- Format Type and Description
-
-
Geographic Information System
Geographic Information System
()
- Specification
-
ARCMAP format
-
Geographic Information System
Geographic Information System
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
The records are from surveys conducted on 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 1:5000 scale.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- geographical information systems (GIS)
- lowland grassland
- Phase 2 Survey (Phase II)
- habitat classification
- habitat surveys (habitat monitoring)
- species inventory
- vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)
- vegetation classification
- vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
- plant communities
- coastal lowland
- National Vegetation Classification (NVC)
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW, 2015. 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
- 4f4c4942-4343-5764-6473-313030333538 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:23:30.038Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0