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  • P-ISSN2765-2203
  • E-ISSN2765-2211

Temporal Variation in Tiger Population in a Semi-Arid Habitat in India

Proceedings of the National Institute of Ecology of the Republic of Korea, (P)2765-2203; (E)2765-2211
2022, v.3 no.3, pp.154-164
https://doi.org/10.22920/PNIE.2022.3.3.154
Randeep Singh (Wildlife Institute of India)
Puneet Pandey (Wildlife Institute of India)
Qamar Qureshi (Wildlife Institute of India)
Kalyanasundaram Sankar (Salim Ali Centre for Ornithology and Natural History)
Paul R. Krausman (School of Natural Resources and the Environment, University of Arizona)
Surendra Prakash Goyal (Wildlife Institute of India)

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Abstract

Understanding temporal variations in wildlife populations is a prerequisite for conservation planning of wide-ranging species such as tigers (Panthera tigris). We determined the temporal variation in abundance, population growth, and sex ratios at different age and sex stages for a tiger population in Ranthambhore Tiger Reserve, India from November 2007 to February 2011 using motion-sensing cameras. We identified 19 male and 21 female tigers from stripe patterns during 16,110 trap nights within an area covering 233 km2. The annual abundance of the population varied from 34.9 (mean)±3.8 (SE) to 23.9±1.5, with a declining trend in the mean annual change of abundance (−12%). The density of adult females remained stable across the study duration, but the densities of adult males and non- breeding tigers fluctuated. The sex ratio was female-biased (0.58 males/female) for breeding tigers and male-biased (1.74 males/female) for non-breeding tigers. Our results reinforce the importance of long-term studies for monitoring the naturally occurring processes in populations to develop population indicators and identify reliable baseline information for conservation and management planning of populations.

keywords
Demography Mark-recapture Motion-sensing cameras Panthera tigris Ranthambhore
Submission Date
2021-09-08
Revised Date
2022-04-28
Accepted Date
2022-04-29

Proceedings of the National Institute of Ecology of the Republic of Korea