Crossing Structure Use in a Tiger Landscape, and Implications For Multi-Species Mitigation

47 Pages Posted: 11 Feb 2022

See all articles by Akanksha Saxena

Akanksha Saxena

Wildlife Institute of India

Bilal Habib

Wildlife Institute of India

Abstract

Crossing structures (CS) for wildlife are important mitigation strategies to offset impacts of roads on wildlife. Little information on CS use exists for the Indian subcontinent or the global tiger landscapes. We monitored wildlife use of nine CS on a national highway in a critical tiger conservation landscape in India. 21 wild mammals were found to use the CS within a span of 2 years. Tigers, wild dogs, most small mammals and ungulates were found to use CS that were near protected areas, while ungulates and small mammals preferred CS with proximal vegetation cover. High species richness was observed under large CS. Similar movement rates for large carnivores between CS and adjacent habitat were observed. We found varied responses by structure generalists and specialists, a consequence of animal behavior and tolerance to human disturbance. We posit that animal behavior holds the key to designing and managing effective wildlife CS.

Keywords: Mitigation, road ecology, passage use, biodiversity conservation, mammals, tiger landscape

Suggested Citation

Saxena, Akanksha and Habib, Bilal, Crossing Structure Use in a Tiger Landscape, and Implications For Multi-Species Mitigation. Available at SSRN: https://ssrn.com/abstract=4032623 or http://dx.doi.org/10.2139/ssrn.4032623

Akanksha Saxena

Wildlife Institute of India ( email )

India

Bilal Habib (Contact Author)

Wildlife Institute of India ( email )

India

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