Semi-automated Great Crested Newt Habitat Suitability Index (HSI) calculator based on Oldham et al. (2000).
Calculates the Great Crested Newt (GCN) Habitat Suitability Index for up to 10 candidate ponds per run. Automates SI1-SI6 scoring using national spatial datasets and habitat data. Supports remote and full HSI assessments, per-pond overrides, and road barrier detection to exclude habitats and ponds on the far side of road features from scoring. Output is a polygon layer with per-pond HSI scores and traffic-light symbology.
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