Exploring habitat suitability for Bubalus arnee (Kerr, ۱۷۹۲) (Mammalia: Artiodactyla: Bovidae) and its interplay with domestic cattle within Koshi Tappu Wildlife Reserve
Publish place: Journal of Animal Diversity، Vol: 5، Issue: 3
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAD-5-3_005
تاریخ نمایه سازی: 28 آبان 1402
Abstract:
The Wild water buffalo (Bubalus arnee) holds a significant ecological role within the Koshi Tappu Wildlife Reserve. Despite its importance, there has been a lack of comprehensive research addressing its distribution, habitat suitability, and interaction with domestic cattle. To address these gaps, this study was undertaken with the primary objectives of elucidating the population distribution of Bubalus arnee, mapping its habitat suitability, and evaluating the interplay between B. arnee and domestic cattle in the Koshi Tappu Wildlife Reserve. The study area was subdivided into cells to gather data on B. arnee presence using various indicators such as sightings, dung, and footprints. Interaction between B. arnee and domestic cattle was assessed based on their spatial overlap within and outside a ۵۰۰-meter radius from observation points. Employing the MaxEnt algorithm, distribution data of B. arnee and climatic variables including maximum and minimum temperatures, mean temperature, and rainfall were analyzed, while land use and cover maps were acquired from the Department of Survey for further analysis. Results revealed a concentration of B. arnee in the southwest region of the Koshi Tappu Wildlife Reserve, with a total of ۴۰۵ individuals recorded, comprising ۲۶ calves, ۶ sub-adults, and ۳۷۳ adults. The distribution pattern displayed a prevalence of small-sized herds (۱۵) followed by medium-sized (۱۵–۲۹) and large-sized (۲۹) herds. Notably, B. arnee presence was most prominent in grassland areas (approximately ۴۹%), while forested regions accounted for the lowest presence (approximately ۱۰%). Interestingly, domestic buffalo were observed near B. arnee only in a singular grid (۲۴ O) in the southwest, while in the eastern grids of the reserve, overlaps between domestic cows and B. arnee occurred within a ۵۰۰-meter radius. Our study indicated a suitability index greater than or equal to ۰.۵۸۷۶, encompassing only about ۱۴% of the reserve's total area. The jackknife test highlighted the influential environmental variables in the model, with annual precipitation contributing around ۶۰.۸% and the maximum temperature of the warmest month contributing about ۳۹.۲۰% in determining the distribution of B. arnee. The results underscored the significance of annual precipitation, with a regularized training gain of ۰.۵۰, compared to ۰.۳۲ for the maximum temperature of the warmest month. In conclusion, this study sheds light on the distribution, habitat suitability, and interaction dynamics of B. arnee within the Koshi Tappu Wildlife Reserve, offering valuable insights for informed wildlife management and conservation strategies.
Keywords:
Authors
Ashish Subedi
School of Environmental Science and Management (SchEMS), Faculty of Science and Technology, Pokhara University, Nepal
Rajeev Joshi
College of Natural Resource Management, Faculty of Forestry, Agriculture and Forestry University, Katari-۵۶۳۱۰, Udayapur, Nepal
Santosh Ghimire
Faculty of Forestry, Agriculture and Forestry University, Hetauda-۴۴۱۰۷, Nepal
Sewak Bhatta
Faculty of Forestry, Agriculture and Forestry University, Hetauda-۴۴۱۰۷, Nepal
Kripa Pokhrel
College of Natural Resource Management, Faculty of Forestry, Agriculture and Forestry University, Katari-۵۶۳۱۰, Udayapur, Nepal
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