NH3 Sensitive Ancient Woodlands
This layer identifies areas of Ancient Woodland and Parkland from which NRW hold recent, auditable records of N-sensitive lichens. Not all lichens are sensitive to increased ammonia: the 62 species used to identify N-sensitive Ancient Woodland and Parkland are particularly sensitive and are important in the woodland/parkland ecosystem. Any area identified as sensitive in this GIS layer should be assessed using a 1µg/m3 NH3 Critical Level.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS124763
- Alternative Title
-
- Coetiroedd Hynafol Sensitif o ran NH3
- Ammonia Sensitive Ancient Woodlands
- NH3 sensitive Ancient Woodlands.lyr
- N Sensitive Wood_Parks Lichens Bryophytes
- Metadata Language
- English
- Lineage
-
The dataset is based on the Ancient Woodland Inventory 2011 ( https://libcat.naturalresources.wales/folio/?oid=11644 2) and Cadw: Historic Parks and Gardens ( https://libcat.naturalresources.wales/folio/?oid=111947 ), with polygons selected if they contain a recent record of one of 62 N-sensitive lichens using lichen data from the British Lichen Society.
- Dataset Reference Date (Publication)
- 2022-08-03
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
Distribution
- Format Type and Description
-
-
Geographic Information System
(
)
- Specification
-
ESRI Feature Class
-
Geographic Information System
(
)
- Resource Locator
-
View and Download
World Wide Web page
- Resource Locator
-
Web Service
World Wide Web page
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
The dataset is based on the Ancient Woodland Inventory 2011 ( https://libcat.naturalresources.wales/folio/?oid=11644 2) and Cadw: Historic Parks and Gardens ( https://libcat.naturalresources.wales/folio/?oid=111947 ), with polygons selected if they contain a recent record of one of 62 N-sensitive lichens using lichen data from the British Lichen Society.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- ancient woodland (ancient trees) (veteran trees)
- lichens
- Type
- Theme
Citation
- Date (Publication)
- 2026-03-20
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
-
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: 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.
Attribution Statement
- Other constraints
- Open Government Licence (OGL)
Licence
- Other constraints
- Open Government Licence (OGL)
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313234373633 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-03-20T15:46:16.122Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0