Correlates and impacts of human-mammal conflict in the central part of Chitwan Annapurna Landscape, Nepal

Jagan Nath Adhikari; Bishnu Prasad Bhattarai; Tej Bahadur Thapa

doi:10.1016/j.heliyon.2024.e26386

Correlates and impacts of human-mammal conflict in the central part of Chitwan Annapurna Landscape, Nepal

Heliyon. 2024 Feb 16;10(4):e26386. doi: 10.1016/j.heliyon.2024.e26386. eCollection 2024 Feb 29.

Authors

Jagan Nath Adhikari^{1

2

3}, Bishnu Prasad Bhattarai^{1

3}, Tej Bahadur Thapa¹

Affiliations

¹ Central Department of Zoology, Institute of Science and Technology, Tribhuvan University, Kirtipur, Kathmandu, 44600, Nepal.
² Department of Zoology, Birendra Multiple Campus, Tribhuvan University, Bharatpur, Chitwan, 44200, Nepal.
³ Nepal Zoological Society, Kirtipur, Kathmandu, Nepal.

Abstract

Crop damage, predation on domestic animals and human attacks are often associated with human-wildlife conflict. The abundance and encounter rate of wild mammals are often associated with human wildlife conflict. Crop damage, livestock depredation and human injury and their relation with environmental factors and encounter rate of the mammals was evaluated in the central region of Chitwan Annapurna Landscape. The abundance and the encounter rate of large mammals were determined by dividing the study area into four different study blocks (A, B, C and D) based on river course and topography. A total of 150 transects (average length = 3.18 ± 0.11 km), were administrated for data collection. Similarly, information on human-wildlife conflict was collected using 600 semi-structured questionnaires (150 from each block). The chital was the most abundant mammal (encounter rate (ER) = 1.49 and relative abundance (RA) = 55.45%) in block A whereas muntjac had the highest encounter rate in blocks B, C and D (ER = 0.34, 0.31, 0.79 respectively) but the relative abundance of rhesus was comparatively higher in blocks B, C and D. The signs of tiger were reported from block A only whereas signs of leopard were reported from all blocks. But signs of Himalayan black bear were reported from B, C and D. The encounter rate of the mammals correlated with the monetary loss caused by them. Greater one-horned rhino, wild pig and chital in lowland and monkeys, northern red muntjac, and Himalayan black bear in mid-hills (blocks B, C and D) were the principal crop raiders with a total average annual loss of US$ 11.45 per household. Similarly, the total annual monetary loss by livestock depredation was US$ 76.60 per household. This study evaluated the encounter rate of mammals and their effects on the conflict with people. However, the negative effects arrived from human-wildlife conflicts always threaten large mammals. Hence, this study suggests future intensive studies related to mitigation and prevention methods to mitigate the issues of human-wildlife conflicts.

Keywords: Chitwan Annapurna Landscape; Conflict; Conservation; Crop damage; Human mammals' interaction; Livestock depredation.