All Wales Phase 1 Terrestrial - Habitat Layer
This is a spatial dataset containing point data showing the location of habitats mapped in mixed habitat polygons during the Upland Vegetation Survey.
The habitat codes have been translated from Ratcliffe and Birkes to Phase 1. Corrections made in 2014 are: missing points added for Cothi Tywi and Mynydd Mallaen and Pwllpeirian, and points removed from single habitat and uniform mixed habitat polygons in Berwyn. This update was done when the voronoi version of the Phase 1 veg layer was created.
The original field surveys were carried out as part of a national habitat survey programme required to implement conservation at a local level. An all-Wales electronic dataset was created for the generation of national statistics on habitat coverage. The dataset was subsequently imported into a GIS to enable its disaggregation into various different geographical regions within Wales.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS99419
- Alternative Title
-
- Phase1 Habitat.lyr
- phase1_hab
- Ph1 Terr.AllWales.hab
- Metadata Language
- English
- Lineage
-
Field survey for the Upland Vegetation Survey spanned from 1979 to 1989. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1-0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor).
All field mapping was carried out by trained and closely co-ordinated teams of surveyors. Checks on the Upland Vegetation Survey data were carried out between 1994-1996 (Yeo, M. J. M., Blackstock, T. H. 2002. A vegetation analysis of the pastoral landscapes of upland Wales, UK. Journal of Vegetation Science 13, 803–816). The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.
- Dataset Reference Date (Publication)
- 2004-03-31
Temporal Extent
- Begin date
- 1979-01-01
- End date
- 1989-12-31
- Topic category
-
- Biota
- Geoscientific information
- Environment
- Imagery base maps earth cover
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
- Format Type and Description
-
-
Geographic Information System
(
)
- Specification
-
[A] ESRI Feature Class [B] Excel Phase 1 look-up-table.
-
Geographic Information System
(
)
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
Field survey for the Upland Vegetation Survey spanned from 1979 to 1989. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1-0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor).
All field mapping was carried out by trained and closely co-ordinated teams of surveyors. Checks on the Upland Vegetation Survey data were carried out between 1994-1996 (Yeo, M. J. M., Blackstock, T. H. 2002. A vegetation analysis of the pastoral landscapes of upland Wales, UK. Journal of Vegetation Science 13, 803–816). The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- habitats (see also specific types of habitats)
- Nature Conservancy Council (NCC)
- Countryside Council for Wales (CCW)
- geographical information systems (GIS)
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Upland vegetation survey 1979-1989 : background, methodology and summary of data collected
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- 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
- Use constraints type
- 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
- File Identifier
- 4f4c4942-4343-5764-6473-3939343139 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-07-30T15:42:49.413Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0