This dataset identifies areas where the addition of new ponds would benefit Great Crested Newt populations.
The core areas contain a pond density of 2+ (i.e. there are 2+ ponds within 250m of any 25m square) where great crested newt presence has been predicted.
Fringe areas contain a pond density of <2 (i.e. there are fewer than 2 ponds within 250m of any 25m square) where great crested newt presence has been predicted or are within a 250m of a Core Area.
Higher scores are associated with darker colouration and represent a greater presence of suitable habitat features:
distance from rivers 50 - 1000m
arable density 50 - 100%
urban denity 40 - 100%
grassland density 5 - 50%
distrance from woodland < 100m
distance to nearest pond 0 - 150m
These suitable habitat features have been given a score of ‘1’.
distance from rivers 50 - 1000m
grassland density 5 - 50%
distrance from woodland < 100m
distance to nearest pond 0 - 150m
These suitable habitat features have been given a score of ‘-1’.
arable density 50 - 100%
urban denity 40 - 100%
Urban areas greater than 2ha (+400m buffer), roads (7.5m), rivers (7.5m) and Environment Agency Flood Zone 2 have been excluded. Attribution statement: © Natural England, 2023
Based upon LCM2015 © NERC (CEH) 2011. Contains Ordnance Survey data © Crown Copyright 2007.
Based upon LCM2015 © NERC (CEH) 2017. Contains Ordnance Survey data © Crown Copyright 2007, Licence number 100017572.
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 Ordnance Survey data © Crown copyright and database right, 2020 © Hertfordshire County Council © Crown copyright and database rights 2020 Ordnance Survey
100019606 © St Albans City & District Council © Crown copyright and database rights 2021 Ordnance Survey
100018953 © Three Rivers District Council © Crown copyright and database rights 2021 Ordnance Survey
100018686 © Welwyn Hatfield Borough Council © Crown copyright and database rights 2021 Ordnance Survey
100019547 © Broxbourne Borough Council © Crown copyright and database rights 2021 © Dacorum Borough Council, 2021; © East Herts Council, 2021; © Hertsmere Borough Council, 2021; © Stevenage Borough Council, 2021; © Watford Borough Council, 2021
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