Counting Tigers and Prey Animals

How can population sizes of tiger and deer be estimated more accurately in order to better understand their relationship?
The last few years have seen a major transition in tiger counting techniques. Nowadays pugmark counting and identification of footprints of individual tigers have been replaced by camera trapping. The first method suffered from lack of repeatability; the second method is heavily influenced by (statistical) assumptions. Both methods suffer from a lack of independent verification procedures. Yet, camera-trapping data comprise a unique data set, not only about tigers but also about prey animals. The latter have never been analysed to date. Questions are whether the statistical methods and software for stripe recognition can be improved. It is also important to know whether the growing tiger population has started ‘eating down the food chain’ meaning that the bigger deer such as sambar and barasingha are being replaced by the smaller chital.

See: Evidence-based park management: the facts behind tiger and deer counting.

To read more about the research programmes click on:
Ground Water
Grazing Lawns
Prey Animals
Human Tiger Conflicts
Re-wilding Bardiya National Park
or return to 2xT Research