GCN Risk Zones (Hertfordshire)

Authoritative
Natural England Open Data Publication
Defra group ArcGIS Online organisation
View Map

Summary

Risk Zones for District Licensing of Great Crested Newts in Hertfordshire

This dataset identifies areas where the distribution of Great Crested Newts (GCN) has been categorised into district zones relating to GCN occurrence and the level of impact development is likely to have on this species.

  • Red zones contain key populations of GCN, which are important on a regional, national or international scale and include designated Sites of Special Scientific Interest for GCN.
  • Amber zones contain main population centres for GCN and comprise important connecting habitat that aids natural dispersal.
  • Green zones contain sparsely distributed GCN and are less likely to contain important pathways of connecting habitat for this species.
  • White zones contain no GCN. However, as most of England forms the natural range of GCN, white zones are rare and will only be used when it is certain that there are no GCN.
Data used to generate this derived data set includes the 2015 CEH Land Cover map (woodland, grassland and arable land classifications), OS MasterMap (pond locations that have been converted by NE into pond densities), CEH / NE Natural Capital Soil pH, Natural England GCN Class License Survey Returns England, Natural England GCN Pond Surveys DLL 17 18 19, OS Open Rivers, OS Boundary Line District Boundaries, Freshwater Habitats Trust PondNet GCN data and GCN data from Leicestershire and Rutland Environmental Records Centre and the Nottinghamshire Biological and Geological Records Centre.

Soil pH:  Henrys, P.A.; Keith, A.M.; Robinson, D.A.; Emmett, B.A. (2012). Model estimates of topsoil pH and bulk density [Countryside Survey]. NERC Environmental Information Data Centre

DOI for LCM2015 25m raster data for Great Britain:
Rowland, C.S.; Morton, R.D.; Carrasco, L.; McShane, G.; O’Neil, A.W.; Wood, C.M. (2017) Land Cover Map 2015 (25m raster, GB). NERC Environmental Information Data Centre. 

Full metadata can be viewed on environment.data.gov.uk and data.gov.uk.
Looking for something else? See other datasets nearby

Details

  • Dataset
    Feature Layer
  • 3 March 2024
    Info Updated
  • 2 March 2024
    Data Updated
  • 2 March 2024
    Published Date
  • Records: 528
  • Public
    Anyone can see this content
  • Custom License
  • Relevant Area

I want to...

View Data Source
Select to open in a new tab
View All Metadata
Select to open in a new tab
Open in ArcGIS Online
Select to open in a new tab

You may be interested in

  1. Map
    Ancient Woodland (England)
    Opendata_NE
    The inventory identifies over 52,000 ancient woodland sites in England.
    Type
    Feature Service
    Date Updated
    21 March 2024
  2. Map
    Traditional Orchards HAP (England)
    Opendata_NE
    This is a spatial dataset that describes the geographic extent and location of the UK Biodiversity Action Plan traditional orchard priority habitat in England.
    Type
    Feature Service
    Date Updated
    27 July 2023
  3. Map
    Priority Habitat Inventory (Central) (England)
    Opendata_NE
    The Priority Habitat Inventory (England) is a spatial dataset that describes the geographic extent and location of Natural Environment and Rural Communities Act (2006) Section 41 habitats of principal importance. This dataset covers Central England.
    Type
    Feature Service
    Date Updated
    6 June 2023
  4. Map
    Habitat Networks (England) - Upland Heathland
    Opendata_NE
    The habitat network maps are developed around 4 distinct habitat components sets and include 4 distinct network zones where action may be undertaken to build greater ecological resilience. This data package contains the individual habitat areas.
    Type
    Feature Service
    Date Updated
    6 June 2023