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Predicting hedgehog mortality risks on British roads using habitat suitability modelling.

Patrick G R Wright^1,2, Frazer G Coomber^1,2, Chloe C Bellamy³

¹Life Sciences, University of Sussex, Brighton, UK.

|January 31, 2020

Summary

This summary is machine-generated.

Road vehicle collisions are a major threat to European hedgehogs in Britain. Habitat suitability modeling identified urban and grassland areas as high-risk zones for hedgehog roadkill, crucial for targeted conservation efforts.

Keywords:

Erinaceus europaeus Habitat fragmentation Hedgehogs Maxent Mitigation Population decline Road casualties Roadkill Wildlife-vehicle collisions

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Area of Science:

Wildlife ecology and conservation biology
Road ecology and wildlife-vehicle collisions
Habitat suitability modeling and spatial analysis

Background:

European hedgehog (Erinaceus europaeus) populations in Britain are declining.
Road vehicle collisions are a significant contributing factor to this decline.
Understanding spatial and temporal patterns of hedgehog roadkill is vital for effective conservation.

Purpose of the Study:

To assess the seasonal trends and key environmental predictors of European hedgehog roadkill across Britain.
To identify high-risk areas for hedgehog roadkill using a Habitat Suitability Modelling (HSM) framework.
To inform targeted mitigation strategies for reducing hedgehog mortality on roads.

Main Methods:

Analysis of a collaborative roadkill dataset from multiple projects across Britain.
Application of Generalized Additive Models to determine seasonal roadkill patterns.
Utilisation of a sequential multi-level Habitat Suitability Modelling (HSM) framework to predict roadkill probability across the British road network.

Main Results:

Hedgehog roadkill peaked in July, with minimal casualties during the winter hibernation period.
Habitat suitability modelling indicated that grassland and urban habitat coverage are key predictors of roadkill probability.
High probabilities of roadkill were predicted in urban and suburban areas with a mix of urban and grassland habitats, covering 9% of the road network.

Conclusions:

Seasonal patterns of hedgehog roadkill are strongly linked to their activity and hibernation periods.
Urban and suburban environments with specific habitat mixes pose the highest risk for hedgehog road collisions.
The developed framework can pinpoint priority locations for implementing effective roadkill mitigation measures to conserve European hedgehogs.