IUCN / SSC Cat Specialist Group - Digital Cat Library |
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| Das, S.K.; Sarkar, P.K.; Saha, R.; Vyas, P.; Danda, A.A.; Vattakavan, J. | |
| Status of tigers in 24-Parganas (South) Forest Division, Sundarban Biosphere Reserve, West Bengal, India | |
| 2012 Full Book | |
This report presents the findings of the first attempt to estimate the tiger population in the 24-Parganas (South) Forest division. As a part of Phase-IV tiger estimation in the Indian Sundarbans, WWF-India in collaboration with the Sundarban Biosphere Reserve carried out camera trapping exercise and estimated population using photographic capture-recapture analysis. Traditionally, capture-recapture techniques have been employed to estimate population parameters for fish, birds and small mammals which cannot be easily counted using distance sampling methods, such as point and line transects. Recent analytical advances and the use of cameras make it possible to model biologically important factors like capture probabilities being heterogeneous among individual animals in a population, a result of social structure and behavioural response to trapping or temporal variation for rare and elusive species such as the tiger. Availability of various softwares such as CAPTURE, MARK and Density makes this technique statistically precise for estimation of populations. |
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