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Ungulate densities and biomass in the tropical dry deciduous forests of Gir, Gujarat, India

Published online by Cambridge University Press:  10 July 2009

Jamal A. Khan ,
Ravi Chellam ,
W. A. Rodgers  and
A. J. T. Johnsingh
Jamal A. Khan
Affiliation:
Wildlife Institute of India, P.O. Box-18, Chandrabani, Dehradun, 248 001, India
Ravi Chellam
Affiliation:
Wildlife Institute of India, P.O. Box-18, Chandrabani, Dehradun, 248 001, India
W. A. Rodgers
Affiliation:
Wildlife Institute of India, P.O. Box-18, Chandrabani, Dehradun, 248 001, India
A. J. T. Johnsingh
Affiliation:
Wildlife Institute of India, P.O. Box-18, Chandrabani, Dehradun, 248 001, India
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Abstract

Data on densities, biomass and ecological factors governing the distribution of various wild ungulate species in the difFerent management units of Gir forest from 1987 to 1989 were collected. Density of ungulates ranged from 50.8 km−2 to 0.42 km−2, the highest for chital (Axis axis), followed by chinkara (Gazella gazella), sambar (Cervus unicolor), nilgai (Boselaphus tragocamelus) and chowsingha (Tetracerus quadricornis). The density of chital did not vary significantly between different censuses and management units. The wild ungulate biomass ranged from 3290 kg km−2 in the National Park to 1900 kg km−2 in the Sanctuary East. Following the partial removal of people and livestock in the mid-1970s, there was an increase in the population of all wild ungulates except nilgai and wild pig (Sus scrofa). Concurrently, there was an increase in the proportion of wild ungulate prey in the lion's diet. Chital density has shown a 1320% increase. An increase in suitable habitats and a decrease in direct competition with livestock are the most likely factors to have triggered the eruption in chital population. These density estimates are discussed in relation to the prevailing ecological conditions in different management units of Gir.

Keywords

Axis axisCervus unicolordry deciduous forestecological implicationsFourier Series EstimatorGir Lion Sanctuarylivestock grazing
Type
Research Article
Information
Journal of Tropical Ecology , Volume 12 , Issue 1 , January 1996 , pp. 149 - 162
Copyright
Copyright © Cambridge University Press 1996

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References

LITERATURE CITED

Barrette, C. 1991. The size of Axis fluid groups in Wilpattu national park, Sri Lanka. Mammalia 55:207–220.Google Scholar
Berwick, S. H. 1974. The community of wild ruminants in the Gir forest ecosystem, India. PhD Thesis, Yale University, USA. 226 pp.Google Scholar
Brown, J. H. 1984. On the relationship between abundance and distribution of species. American Naturalist 124:255–279.Google Scholar
Buckland, S. T., Anderson, D. R., Burnham, K. P. & Laake, J. L. 1993. Distance sampling: estimating abundance of biological populations. Chapman & Hall, London. 446 pp.Google Scholar
Burnham, K. P., Anderson, D. R. & Laake, J. L. 1980. Estimation of density from line transect sampling of biological populations. Wildlife Monographs 72. The Wildlife Society, Washington, DC.202 pp.Google Scholar
Campbell, R. C. 1989. Statistics for biologists. 3rd Edition. Cambridge University Press, Cambridge. 446 pp.CrossRefGoogle Scholar
Champion, H. G. & Seth, S. K. 1968. The revised survey of the forest types of India. Manager of Publications, Government of India, New Delhi. 404 pp.Google Scholar
Damuth, J. 1981. Population density and body size in mammals. Nature 290:699–700.CrossRefGoogle Scholar
Dinerstein, E. 1980. An ecological survey of Royal Karnali-Bardia wildlife reserve, Nepal. Biological Conservation 18:5–38.Google Scholar
Drummer, T. D. & McDonald, L. L. 1987. Size bias in line transect sampling. Biometrics 43:13–21.CrossRefGoogle Scholar
Du Toit, J. T. & Owen-Smith, N. 1989. Body size, population metabolism, and habitat specialization among large African herbivores. American Naturalist 133:736–740.Google Scholar
Eisenberg, J. F. 1980. The density and biomass of tropical mammals. Pp. 34–55 in Soulé, M. E. & Wilcox, B. A. (eds). Conservation biology: an evolutionary-ecological perspective. Sinauer Associates, Sunderland.Google Scholar
Eisenberg, J. F. & Seidensticker, J. 1976. Ungulates in southern Asia: a consideration of biomass estimates for selected habitats. Biological Conservation 10:293–307.Google Scholar
Fowler, J. & Cohen, L. 1986. Statistics for ornithologists. BTO Guide No. 22. British Trust for Ornithology. 175 pp.Google Scholar
Hirst, S. M. 1969. Road-strip census techniques for wild ungulates in African woodland. Journal of Wildlife Management 33:40–48.CrossRefGoogle Scholar
Johnsingh, A. J. T. 1983. Large mammalian prey-predators of Bandipur. Journal of Bombay Natural History Society 80:1–57.Google Scholar
Joslin, P. 1973. The Asiatic lion: a study of ecology and behaviour. PhD Thesis, University of Edinburgh, UK. 249 pp.Google Scholar
Karanth, K. U. & Sunquist, M. E. 1992. Population structure, density and biomass of large herbivores in the tropical forest of Nagarahole, India. Journal of Tropical Ecology 8:21–35.CrossRefGoogle Scholar
Khan, J. A. 1993. Ungulate-habitat relationship in Gir forest ecosystem and its management implications. PhD Thesis, Aligarh Muslim University, India. 185 pp.Google Scholar
Khan, J. A. 1994. Food habits of ungulates in dry tropical forest of Gir Lion Sanctuary, Gujarat, India. Acta Theriologica 39:185–193.Google Scholar
Khan, J. A. In press. Conservation and management of Gir Lion Sanctuary and National Park, Gujarat, India. Biological Conservation.Google Scholar
Khan, J. A., Rodgers, W. A., Johnsingh, A. J. T. & Mathur, P. K. 1990. Gir lion project: ungulate habitat ecology in Gir. Final project report. Wildlife Institute of India. 214 pp.Google Scholar
Khan, J. A., Rodgers, W. A., Johnsingh, A. J. T. & Mathur, P. K. 1994. Tree and shrub mortality and debarking by sambar Cervus unicolor (Kerr) in Gir after a drought in Gujarat, India. Biological Conservation 68:149–154.CrossRefGoogle Scholar
Laake, J. L., Burnham, K. P. & Anderson, D. R. 1979. Users' manual for program TRANSECT. Utah State University Press, Logan. 26 pp.Google Scholar
Mishra, H. R. 1982. The ecology and behaviour of chital (Axis axis) in Royal Chitwan National Park. PhD Thesis, University of Edinburgh, UK. 240 pp.Google Scholar
Peters, R. H. & Raelson, J. V. 1984. Relations between individual size and mammalian population density. American Naturalist 124:498–517.Google Scholar
Ravi, Chellam. 1993. Ecology of Asiatic lion (Panthera leo persica). PhD Thesis, Saurashtra University, Rajkot, India. 170 pp.Google Scholar
Ravi, Chellam & Johnsingh, A. J. T. 1993. Management of Asiatic lions in the Gir forest, India. Symposia Zoological Society London 65:409–424.Google Scholar
Robinson, J. G. & Redford, K. H. 1986. Body size, diet, and population density of neotropical forest mammals. American Naturalist 128:665–680.CrossRefGoogle Scholar
Schaller, G. B. 1967. The deer and the tiger. University of Chicago Press, Chicago. 370 pp.Google Scholar
Sinclair, A. R. E., Olsen, P. D. & Redhead, T. D. 1990. Can predators regulate small mammal populations? Evidence from house mouse outbreaks in Australia. Oikos 59:382–392.Google Scholar
Sinha, S. P. 1987. The ecology of wildlife with special reference to Gir lion in Gir Lion Sanctuary and National Park. PhD Thesis, Saurashtra University, India. 264 pp.Google Scholar
Srikosamatara, S. 1993. Density and biomass of large herbivores and other mammals in a dry tropical forest, western Thailand. Journal of Tropical Ecology 9:33–43.CrossRefGoogle Scholar