Lambir herpetofaunal mortalities Project (proposal)

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Animal mortalities on the highway in Lambir Hills, Sarawak, Borneo

Thasun Amarasinghe and Juwinikh Jupain



The increase in road networks throughout the world has brought about for a concern for the effects of vehicular traffic on flora and fauna. This concern is evidenced by the increasing amount of literature dealing with the ecological effects of roads and traffic. Roads are known to cause forest fragmentation.


  1. Identify the animal mortalities on highway goes through the Lambir Hills National Park (LHNP), Sarawak, Borneo and analyze the diversity.
  2. Find whether there is any significant difference of roadkills in rainy and non-rainy days.

Research outcomes

  • A checklist of roadkills and diversity in road kills in LHNP, Borneo
  • Occurrence of roadkills during rainy days and non-rainy days and significant differences (if any)

Study area

The study was conducted along the highway (500 m) going through the Lambir Hills National Park situated in Miri, Sarawak of Borneo.


Roadkills will be sampled in 2km road segment. One of us will be walking along this road segment during early hours (6:00 hr) in the morning looking and late hours (18:00 hr) in the evening for road kills. On sighting a roadkill, the roadside habitat, state of the roadkill, and the location of the roadkill on the road segment will be recorded. All road-killed individuals will be examined and photographed.

All of them will be removed from the road to avoid multiple counts of the same kill. Wherever possible, individuals crossing roads will be caught, identified and released at the same location. Samplings will be repeated for 3 days.

The Shannon Wiener Index will be used to determine the diversity. H = -∑s (Pi) (-log Pi): H = Diversity of species; S = Number of species; Pi = Proportional frequency of the ith species.

A non-parametric test for comparison of independent samples (Mann-Whitney U-test) to test the difference between the number of roadkills on rainy and dry days.