NH3 Sensitive Ancient Woodlands

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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

Dynodydd
Identifier
NRW_DS124763
Teitl Amgen
Alternative Title
  • Coetiroedd Hynafol Sensitif o ran NH3
  • Ammonia Sensitive Ancient Woodlands
  • NH3 sensitive Ancient Woodlands.lyr
  • N Sensitive Wood_Parks Lichens Bryophytes
Laith Metadata
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.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2022-08-03
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 

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
  • Geographic Information System ( )

    Specification

    ESRI Feature Class

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
Degree
false
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

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
  • ancient woodland (ancient trees) (veteran trees)
  • lichens
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-03-20
Code
geonetwork.thesaurus.local.theme.converted_nrw-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: 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

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313234373633 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-03-20T15:46:16.122Z
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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