Great Crested Newt - Risk Zones (Hertfordshire)

This dataset identifies areas where the distribution of great crested newts (GCN) has been categorised into 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 (None are present on this draft). 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. Attribution statement: © Natural England, 2023; Based upon LCM2015 © NERC (CEH) 2011. Contains Ordnance Survey data © Crown Copyright 2007.; Contains data supplied by Natural Environment Research Council © NERC (Centre for Ecology & Hydrology) and © Natural England. Soils Data © Cranfield University (NSRI) and for the Controller of HMSO 2019. Based upon LCM2007 © NERC (CEH) 2011.; Contains Ordnance Survey data © Crown Copyright 2007. © third party licensors.; Contains, or is derived from, information supplied by the Ordnance Survey and Rural Payments Agency. © Crown copyright and database rights 2019.; © Freshwater Habitats Trust, PondNet monitoring scheme 2018. Contains, or is derived from, information supplied by Ordnance Survey.; © Crown copyright and database rights 2020 Ordnance Survey 100022021.; Contains Ordnance Survey data © Crown copyright and database right, 2020.