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Ecological Indicators
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Can forest fragmentation and configuration work as indicators of
human–wildlife conflict? Evidences from human death and injury by
wildlife attacks in Nepal
Krishna Prasad Acharya
a,b,
⁎
, Prakash Kumar Paudel
c
, Shant Raj Jnawali
d
, Prem Raj Neupane
b
,
Michael Köhl
b
a
Department of Forests, Ministry of Forest and Soil Conservation, Government of Nepal, Kathmandu, Nepal
b
University of Hamburg, World Forestry, Leuschnerstr 91, D-21031 Hamburg, Germany
c
Center for Conservation Biology, Kathmandu Institute of Applied Sciences, PO Box 23002, Kathmandu, Nepal
d
Hariyo Ban Program, WWF Nepal, Baluwatar, Kathmandu, Nepal
ARTICLE INFO
Keywords:
Asiatic elephant
Bengal tiger
Fragmentation
Human wildlife conflict
Leopard
Nepal
Rhinoceros
Zero-inflated regression
ABSTRACT
Fragmented forests and heterogeneous landscapes are likely to have less natural vegetation and smaller core
areas, a low degree of landscape connectivity, high prevalence of anthropogenic edges, and high landscape
heterogeneity, which may alter—at varying degrees—behavior of wildlife species such as attacks on humans. We
evaluated whether or not forest fragmentation (e.g. shape, size and distribution of forest patches measured as
landscape shape index, effective mesh size, and landscape heterogeneity), habitats (proportion of bush and
grassland, distance to water sources), and human disturbances (human population density) have a significant
relationship with frequencies of human deaths and injuries by Bengal tiger (Panthera tigris tigris), common
leopard (Panthera pardus), one-horned rhinoceros (Rhinoceros unicornis) and Asiatic elephant (Elephas maximus).
Data on human injury and death were obtained from a national survey over five years (2010–2014). The
relationship between wildlife attacks and landscape attributes were investigated using a zero-inflated Poisson
regression model. Attacks by tigers were significantly and positively associated with forest fragmentation
(effective mesh size which is high in a landscape consisting of disconnected small patches). Attacks by common
leopards were strongly positively related with landscape heterogeneity, and negatively related to the proportion
of bush and grassland. Attacks by one-horned rhinoceros were positively significantly related to the distance to
water sources, and proportion of bush and grassland in the landscape. Attacks by elephants were strongly and
positively associated with the forest fragmentation (landscape shape index, which increases as patches in the
landscapes becomes disaggregated). These results suggest that forest fragmentation is inevitably a critical driver
of human–wildlife conflicts, although the extent of effects varies depending on species specific habitat
requirements.
1. Introduction
Large mammals play important roles in the forest ecosystems mostly
by maintaining prey populations and seed dispersal (Berger et al., 2001;
Tanner, 1975). They are regarded as keystone species of ecosystems
(Caro, 2010; Roberge and Angelstam, 2004; Williams et al., 2000).
Forest fragmentation and deforestation lead to loss of core forest areas,
disruption of dispersal ability of wildlife in their home ranges, and
deterioration of quality habitats by different means such as frequent
forest fire and invasion by alien flora and fauna, etc. (Bennett, 1990;
Laurance et al., 2000; Lehmkuhl and Ruggiero, 1991). Furthermore,
forest loss and degradation bring wildlife into human proximity and
cause confrontation because both wildlife and humans compete for
shared resources (Distefano, 2015; Woodroffe et al., 2005). Conse-
quently, wildlife raid crops, damage property and kill humans. The
subsequent aggressive actions by humans result in further escalation of
conflict, including retaliatory killings of wildlife (Distefano, 2015;
Michalski et al., 2006; Woodroffe et al., 2005).
Bengal tiger Panthera tigris tigris (Linnaeus, 1758), common leopard
Panthera pardus fusca (Meyer, 1974), Asiatic one-horned rhinoceros
Rhinoceros unicornis (Linnaeus, 1758) and Asiatic elephant Elephas
maximus (Linnaeus, 1758) are top ranked conflict animals in Nepal in
http://dx.doi.org/10.1016/j.ecolind.2017.04.037
Received 7 January 2017; Received in revised form 9 April 2017; Accepted 14 April 2017
⁎
Corresponding author at: Department of Forests, Ministry of Forest and Soil Conservation, Government of Nepal, Kathmandu, Nepal.
E-mail addresses: dgdof@dof.gov.np, kpacharya1@hotmail.com (K.P. Acharya).
Ecological Indicators 80 (2017) 74–83
1470-160X/ © 2017 Elsevier Ltd. All rights reserved.
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