Human-elephant conflict in western Thailand: Socio-economic drivers and potential mitigation strategies
Human-elephant conflict in western Thailand: Socio-economic drivers and potential mitigation strategies
Antoinette van de Water 0 1
Kevin Matteson 0 1
0 Department of Biology, Miami University , Oxford , Ohio, United States of America, 2 Bring the Elephant Home Foundation , Chiang Mai , Thailand
1 Editor: Bi-Song Yue, Sichuan University , CHINA
Understanding human-wildlife conflict is an important first step in the conservation of highly endangered species that can have adverse effects on human communities, such as elephants. To gain insights into variables that shape attitudes toward elephant conservation in Asia, we surveyed 410 households and 46 plantation owners in seven villages around the Salakpra Wildlife Sanctuary in western Thailand, an area of high human-elephant conflict. We sought to evaluate how past experiences with elephants (positive or negative), as well as socio-economic variables (age, income level, gender, and employment type) affect attitudes toward elephant conservation and coexistence in this area. In addition, we quantified deterrence methods currently used and identify potential mitigation strategies supported by community members. In general, less supportive attitudes toward elephant conservation and coexistence were held by individuals older than 35 years of age, those who had previously had experienced negative interactions with elephants, those with lower incomes, and those working in the agricultural sector. Conversely, those who had received benefits from living near elephants (e.g., supplemental income or feelings of pride from hosting volunteers or participating in conservation work) had more supportive views of elephant coexistence. Plantation owners reported using a variety of deterrence methods with varying success, with firecrackers being the most commonly utilized method. Community members identified several potentially beneficial mitigation strategies including forest restorations and patrol teams, adding water sources to wild elephant habitat, and education of local school and community groups. Overall, our results highlight the value of community members receiving benefits from living near elephants and suggest that special incentives may be needed for demographic groups disproportionately affected by elephants (e.g. those at lower income levels, those working in agriculture). A combination of these and other approaches will be required if human-elephant coexistence in western Thailand is to be realized.
Data Availability Statement: All relevant data are
within the paper and its Supporting Information
Funding: This work was supported by the
Ecosystem Partnership Fund (CEPF) of the
International Union for Conservation of Nature and
Natural Resources (IUCN) (https://www.iucn.org/
regions/asia/our-work/regional-projects/criticalecosystempartnership-fund-cepf) in 2015 for the
Conservation Leadership Program of Bring the
Elephant Home. The study conducted by AW was
part of this program (Ref1 IUCN Project no:
77636000, Ref2 Grant Contract no: CEPF-034). The
funder had no role in study design, data collection
and analysis, decision to publish, or preparation of
Alleviation of human-wildlife conflicts is one of the great challenges for conservation of
wildlife worldwide [
]. Several studies have demonstrated that people are more willing to tolerate
and coexist with wild species when they receive benefits from generating income through
tourism, a pleasure to see wildlife, feeling more secure/safe, and ecological services provided by
]. However, conflicts with individual animals can lead to persistent negative views
of `problem' species [
], reducing the likelihood of future conservation efforts [
]. In addition
to direct experiences (positive or negative) with wildlife, socio-economic variables such as
income level, gender, and employment type can all influence community perception of wildlife
]. A detailed understanding of community perceptions of human-wildlife conflicts is
necessary to facilitate coexistence of humans and wildlife in many areas of the world.
Reduction of human-wildlife conflict is especially challenging for large, potentially
dangerous and damaging species such as elephants. In 2008, an estimated 38,500±52,500 wild Asian
elephants (Elephas maximus) were remaining globally, primarily in India, Myanmar, Thailand,
Sri Lanka, Malaysia and Indonesia [
]. In this region, habitat destruction and fragmentation
often result in increasing conflicts between people and elephants [
]. Although Asian
elephants are listed by the IUCN as endangered, [
] human-elephant conflict (HEC) continues
to result in hundreds of elephant and human deaths per year [
], and HEC is considered a
major threat to the future of Asian elephants [
]. Identifying the factors that contribute to
HEC is a critical step towards effective conservation of Asian elephants.
A variety of socio-economic factors have been shown to influence attitudes towards HEC
and elephant conservation. In Kenya [
] and Uganda [
], women were slightly less tolerant
of elephants or elephant conservation initiatives than men, potentially due to their greater
involvement in agricultural activities to sustain their families, an employment type
considered to be threatened by elephants [
]. Supporting this idea, people's employment type
has been shown to influence perceptions of elephants in Kenya, with people working in
agriculture exhibiting less tolerance of elephants than people working in other areas [
Alternately, those receiving benefits from the presence of elephants (e.g. via ecotourism,
employment, enjoyment to see elephants) have a higher inclination to support conservation
]. In India, about 50% of the survey participants stated that women were equally
affected by human-elephant conflicts, even though women were carrying a disproportionate
burden of these effects [
]. Gender, age, and income have also shown to play a role in
shaping attitudes toward conservation of species that contribute to human-wolf conflict in
India, with age showing a negative correlation with attitudes, males having more positive
attitudes and the number of income sources having a positive association with attitudes
toward wolves [
Although roughly half of the geographic range of elephant habitat in Thailand is considered
suitable for long-term elephant conservation, much of this area is threatened by agriculture,
roads and other development [
] resulting in fragmentation and increased HEC [
Tenasserim range, along the border between Thailand and Myanmar, is a priority area for the
conservation of the Asian elephant and one of the last places in Asia with enough continuous
habitat to support viable elephant populations [
]. Salakpra Wildlife Sanctuary on the
Tenasserim range is home to an estimated 181 Asian elephants [
]. Increased agricultural activity,
growing human populations, the construction of roads and of the Tha Tung Na and
Srinagarind dams, have all contributed to habitat fragmentation in and around this protected area [
These factors have resulted in increasing HEC [
], which now causes a variety of problems
for the human communities in the area while also threatening the long-term survival of the
elephant population [
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Fig 1. Examples of human-elephant conflict in the Chong Sadao district, Thailand as well as general hypotheses on factors affecting
perceptions of elephant conservation and coexistence. Panels show A) a cassava plantation that is frequently raided by wild elephants, B) a
wild elephant searching for water, C) a wild male elephant electrocuted by electric fencing on a corn plantation, D) a sustainable elephant
deterrence method that provides benefits, and E) a community tree nursery severely damaged by elephants.
The overall purpose of this paper is to improve understanding of the variables that influence
attitudes toward Asian elephant conservation, with a goal of mitigating conflicts and
promoting human-elephant coexistence. We explored perceptions of HEC for 410 households and 46
plantations distributed in seven villages around the Salakpra Wildlife Sanctuary in western
Thailand, examining trends in crop and property damage, as well as feelings about existing
and potential methods for reducing HEC. We assessed several hypotheses regarding the
relationship between socio-economic variables and perceptions of elephants in the area.
Specifically, we evaluated how socio-economic variables (gender, age, employment sector, income),
negative experiences with elephants (e.g., crop raiding, property damage), or perceived
benefits from elephants (e.g., income from ecotourism, involvement in community conservation)
affect residents' stated support for elephant conservation and willingness to tolerate elephants
in the area (Fig 1). We predicted that socio-economic variables, as well as past experiences
with elephants, would play a large role in structuring community feelings toward elephant
conservation. The results in this paper represent the first detailed study of perceptions of HEC
in villages around the Salakpra Wildlife Sanctuary in Thailand and contribute to a broader
understanding of HEC in Asia.
The Chong Sadao district in western Thailand consists of seven villages with a combined
population of 3,649 people. The district is located on the banks of the Kwai Yai River and borders
both Salakpra Wildlife Sanctuary and Erawan National Park (Fig 2). The landscape outside the
protected areas is dominated by cassava and sugarcane plantations and is adjacent to the Khao
Chong Krathing and Khao Tha Manao mountains. The district is an area of high
human-elephant conflict [
], especially during the dry season (February to June) when elephants search
for water sources located outside the protected areas (W. Sujirat, personal communication,
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Fig 2. Relative locations of Salakpra Wildlife sanctuary and the seven participating villages in the area of high human-elephant conflict.
(1) Chong Sadao), (2) Ban Mo Thao), (3) Ban Pong Pat, (4) Ban Chong Krathing, (5) Ban Kang Pla Kod), (6) Ban Nong Pra Chum and (7) Ban
Tub Sila. Adapted from Google Maps by A. van de Water.
The study consisted of two questionnaires, a primary questionnaire aimed at households in
the region (`household questionnaire' hereafter), and a follow-up questionnaire that
specifically targeted plantation owners (`plantation owner questionnaire', hereafter) because of their
vulnerability to elephant-induced damage. The household questionnaire included 14 questions
(S1 Appendix) focused on attitudes and perceptions of villagers towards elephants. The
questionnaire was translated into Thai and was administered in October 2015 to 410 households.
We first approached village leaders to explain the objectives of the research, who then helped
facilitate distribution of the questionnaires to the randomly selected households. All
community members that were present at the moment of the questionnaire were given an opportunity
to fill out the questionnaire. We estimate that ~38% of total households in Chong Sadao
district participated in the household questionnaire, with only one participant per household.
Participation was completely voluntary and no incentives (financial or other) were provided
for filling out the questionnaire. In March 2016, the 12-question plantation owner
questionnaire (S2 Appendix) was translated into Thai and was administered to gain a deeper insight
into the attitudes of 46 plantation owners. Plantations were defined as land used to grow cash
crops with a minimum size of one rai (1600 m2). The average size of the plantations was 24.4
rai (39,040 m2). It is possible that some of the participants in the plantation owner
questionnaire also participated in the household questionnaire. Both questionnaires were reviewed
and approved by the Miami University Internal Review Board with project reference number
01805e. Informed consent, written in Thai, was obtained before participants enrolled in the
study. Both questionnaires were divided into two sections to gain insight into (i)
socio-economic variables and past experiences with elephants (positive or negative) and (ii) attitude
toward and perception of potential solutions. The household questionnaire included
demographic questions and focused on the impact of HEC at the household level, including people's
overall perceptions of elephants in the community. The plantation owner questionnaire sought
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to examine what types of crops are usually raided, the level of crop raiding, currently used
elephant deterrence methods and their perceived efficacy.
We used logistic regression (SPSS 24, SPSS, Inc., Chicago, USA) to evaluate how
socio-economic variables (gender, employment type, age, and income) and past experiences with
elephants (negative or positive) affect respondents' `attitude toward elephant conservation' and
`attitude toward human-elephant coexistence'. Employment was grouped into those working
in agriculture versus all other non-agricultural work areas. Our survey asked for participant
age according to six possible age range categories (18±24 years old, 25±34 years old, 35±44,
45±54, 55±64, and 65 and older). To increase statistical power and clarity of recommendations,
age was grouped into two categories for statistical analyses (<35 years old versus 35 and
older). Similarly, income was analyzed as less than 10,000 THB (301 USD) and greater than or
equal to 10,000 THB per month.
`Attitude toward elephant conservation' was based on the question ªDo you feel it is
important to invest in elephant conservation?º for which respondents could answer ªyesº or ªnoº.
The respondents also had the option to specify the reasoning behind their answer (see S1
Appendix) but, for the purposes of this paper, we focused just on the frequency of ªyesº and
ªnoº responses. For `attitude toward human-elephant coexistence' we analyzed responses to
the question ªWhich statement describes your attitude toward elephants most accurately?º
which included three possible response categories: 1) ªI tolerate elephants in my
environmentº, 2) ªI would tolerate elephants in my environment if the elephants would stop
destroying my plantationsº and 3) ªI would prefer the elephants to be eradicatedº. For simplicity, we
condensed these responses to 1) ªtolerateº, 2) ªconditional tolerateº, and 3) ªeradicateº. To
evaluate the dichotomous dependent variable `attitude toward elephant conservation', we used
binary logistic regression, with a Hosmer and Lemeshow Test used to evaluate overall model
fit. For `attitude toward human-elephant coexistence', with three categories, we used
multinomial regression with a likelihood ratio test used to evaluate the model fit. Variables were
removed if not statistically significant at an alpha of 0.05. Interactions were not included to
keep the set of variables to a reasonable size and due to a lack of clear a priori hypotheses
regarding the influence of interactions.
We used the plantation owner survey to evaluate the frequency and types of HEC occurring
on plantations. We generally compared plantation owner perceptions of elephants to verify the
differences between employment sectors found in the household questionnaire. Finally, we
summarized the current deterrence methods utilized by plantation owners and the perceived
efficacy of these methods. The question about the deterrence methods utilized by plantation
owners had a category for `other methods' to account for used methods outside of the
categories we had predefined as deterrent methods. From field experience, we have not heard that
people were using ginger or chili in the area of this study, so these methods were not included
as a predefined category in the plantation questionnaire.
Of the 410 participants in the household survey, 51.5% of respondents were female, 29.5% of
participants were under 35 years of age and 51.5% were between 35 and 54 years old. 25.5%
of households were located within 750 m of the protected area boundary. Three respondents
answered they lived inside the protected area. In addition, although one village appears to be
located within the boundaries of the protected area (Fig 2), it is important to note that the
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boundaries between the protected area and the community forest in this area are not entirely
clear. The main source of reported income was general labor (44.1%, including manufacturing,
construction, and retail trade) followed by those working in agriculture (22.5%), and `other'
types of income (20.4%, including accommodation and food services and support from adult
children and others). 9.1% of respondents worked as officials (including public administration,
education, and public health services) and 3.8% stated that their main income came from
forest products. Income was relatively low in the area of our study: 59.9% of the participants
declared incomes of less than 10,000 THB (301 USD) per month and 37.4% declared incomes
of between 10,000 THB (301 USD) and 20,000 THB (602 USD) per month. The national
average monthly wage for Thailand in 2016 was 413 USD (National Statistical Office of Thailand).
Just over half (52.7%) of the surveyed households reported experiencing a negative impact
from HEC over the last two years (October 2013±October 2015). Of those who reported a
negative experience, 104 respondents (48.4%) provided additional details regarding the type of
negative impact. The most commonly identified type of negative effect of elephants was
property damage (49.0%) (e.g., see Fig 1, Panel E). Twenty-four respondents (23.1%) mentioned
that they saw elephants passing the house, crossing the road or drinking water, although it was
not clearly stated how, exactly, this was a negative interaction. Wild elephants have killed
people in this area so it is reasonable for a wild elephant sighting to elicit fear and to potentially
be a negative experience. Ten respondents (9.6%) reported experiencing crop raiding by
elephants. Nine respondents (8.7%) reported fear from seeing elephants, and six respondents
(5.8%) mentioned the inconvenience of traveling when elephants are near the house. Two
respondents (1.9%) answered that they had experienced human injuries caused by elephants,
and an additional two individuals did not specify the negative impact they experienced from
Just over a third of respondents (35.9%) reported a perceived benefit of living near wild
elephants. The exact nature of these benefits varied, with 46.6% indicating community
development, 24.4% indicating a feeling of pride from hosting conservation volunteers (e.g. volunteers
to plant trees), 17.6% indicating a feeling of satisfaction/pride to do conservation work, 8.3%
reporting financial benefits through conservation jobs, and 3.1% reporting financial benefits
due to ecotourism jobs.
Influence of socio-economic variables on attitudes toward elephant conservation and
coexistence. Attitudes toward elephant conservation and coexistence varied by
socio-economic variables (S3 Appendix). We found no significant difference in overall attitude toward
elephant conservation by gender, income or employment type (those working in agriculture
versus those not working in agriculture). We did, however, find a significant difference in the
overall attitudes toward elephant conservation by age (Table 1), with residents older than 35
years of age being less likely to view elephant conservation as important than their younger
counterparts (coefficient = -0.783 [SE 0.372], p = 0.035). In addition, those who had
experienced a negative impact of elephants were significantly less likely to view elephant
conservation as important (coefficient = -1.184 [SE 0.328], p < 0.001; Table 1). The binary logistics
model including age and negative experiences with elephants fit the data well (Hosmer and
Lemeshow Test = 0.568, df = 2, p = 0.753).
ªConditional toleranceº was set as the reference category and departures towards ªeradicateº and ªtolerateº are shown below. Gray shading indicates significance at
p < 0.05.
When evaluating feelings towards coexistence with elephants (preference for tolerance,
conditional tolerance, or local eradication), we found no difference by gender or age. There was,
however, a difference in attitude toward human-elephant coexistence by employment type and
income, with those working in agriculture (coefficient = -1.131 [SE 0.376], p = 0.003; Table 2)
or making less than 10,000 THB/year (coefficient = -0.724 [SE 0.271], p = 0.008; Table 2) being
less likely to unconditionally tolerate elephants. In addition, those who had not experienced a
negative effect of living near elephants were more likely to support both eradication
(coefficient = 0.695 [SE 0.260], p = 0.007) and unconditional tolerance of elephants (coefficient = 0.959
[SE 0.282], p = 0.001), an unexpected result. Finally, those who had not received benefits from
living near elephants were more likely to support eradication of elephants from the area
(coefficient = 1.005 [SE 0.296], p = 0.001; Table 2). The multinomial logistics model including the
above variables fit the data well (Likelihood Ratio Test = 72.204, df = 8, p < 0.001).
Potential HEC mitigation methods preferred by household owners. The potential HEC
mitigation methods deemed essential by the respondents of the household questionnaire were
`Forest restoration efforts inside the wildlife sanctuary' and `Patrol team to chase elephants
back into the protected area'. Respondents also frequently reported `Forest restoration efforts
at the buffer zoneº as a high priority. Support for most mitigation actions was high. For
example, 98% of respondents felt that ªInitiatives to realize benefits for local communitiesº and
ªEducation of local groups and schoolsº were medium, high, or essential priorities (Table 3).
Potential community-wide human-elephant conflict mitigation strategies ranked by
Forest restoration efforts inside the wildlife sanctuary
Patrol team to chase elephants back into the protected area
Fencing the wildlife sanctuary so that the elephants cannot get out
Forest restoration efforts at the buffer zone
Adding water sources to wild elephant habitat (check dams, reservoirs)
Initiatives to realize benefits for local communities (ecotourism, conservation jobs)
Education of local groups and schools
Essential High priority Medium
36.1% 48.0% 9.0%
31.5% 38.5% 25.4%
26.6% 46.8% 22.9%
24.9% 52.9% 17.1%
22.4% 44.6% 28.8%
20.2% 54.4% 23.4%
17.3% 52.9% 28.0%
Low priority Not a
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Plantation owner questionnaire
The plantation owner questionnaire was completed by 46 respondents. We did not collect
detailed demographic data on plantation owners (e.g., age, income), but the majority of
plantations were family-owned and ownership was quite evenly divided between men and women.
All plantations were within 4 km of the protected areas. The largest plantations were primarily
used to grow cassava and sugarcane, while other cash crops included banana, jackfruit, mango,
tamarind, lime and kaffir lime.
Causes and impacts of HEC on plantations. Just over half of plantation owners
(54.3%) stated that their plantations are raided by elephants daily. Nearly all (95.7%)
experienced crop raiding at least once a month. All sugarcane plantation owners (8 respondents)
reported that their plantation had been raided by elephants at least once a week. The major
crops mentioned by the participants as raided by elephants were cassava (41.5%, n = 200),
banana (17.0%), jackfruit (10.0%), mango (8.5%) and tamarind (3.5%). Plantation owners
estimated annual losses to be less than 10,000 THB (301 USD) per year in 52.2% of these
cases, while 28.3% estimated it to be between 10,000 and 20,000 THB (301±602 USD).
Although we did not collect data on financial loss due to property damage and human injury,
the financial burden of these incidences is substantial and likely higher than crop damage
costs in most cases (e.g., in 2018, replacement of a water tank is estimated to cost at least
9,000 THB and a new water pipe system can cost more than 6,000 THB). Furthermore,
human injuries can result in catastrophic financial losses if an individual becomes unable to
work and incurs medical expenses. Property damage by elephants other than crop raiding
was mentioned by 71.7% of plantation owners and human injury was reported by 2.2% of
plantation owners. 26.1% of the plantation owners reported that elephants did not cause any
harm other than crop raiding. The most commonly reported property damage was breaking
of water pipes and water tanks (63.0%).
69.6% of the participants in the plantation owner questionnaire wanted elephants
eradicated, a much higher proportion than in the household survey (34.3%).
Deterrence methods currently used by plantation owners. The most common method
reported by plantation owners to deter elephants was firecrackers (used by 87.0% of
respondents), and firecrackers were also considered the most effective method (Table 4). Less than
half of plantation owners used electric fencing, which was largely considered semi-effective
(63.6%) or not effective (31.8%). Elephant watchtowers and non-electric fences were
less-utilized and considered less effective. Other deterrence methods that were anecdotally mentioned
include voice/shouting, calling park officers, and use of dogs, fire, flashlights or cars to scare or
8 / 14
80.4% of the plantation owners were interested to try beehive fences as a new deterrence
method: 32.6% mentioned that they would like help to install beehive fences now and 47.8%
stated they were interested and would like to learn more.
Finding ways to support coexistence of humans and endangered species in areas of high
human-wildlife conflict is a key challenge for conservation. In this study, we identified high
levels of human-elephant conflict in the Chong Sadao district of western Thailand, with over
half of the household respondents having experienced negative effects of living near elephants
over the last two years, and over 95% of plantation owners reporting monthly crop raiding by
elephants. Although there was general support for elephant conservation (84.6% of household
respondents considered elephant conservation important), there were important differences
in perceptions according to socio-economic variables and positive or negative experiences
with elephants. Furthermore, there were a variety of deterrents and ideas for mitigation efforts
reported by both household and plantation owners. Understanding these issues and potential
solutions is a first step in mitigating human-elephant conflicts in this region of Thailand and
in Asia generally.
Age of respondents and past negative experiences with elephants affected respondents'
perceptions of elephant conservation. Specifically, we found that older respondents (>35 years
old) and those who had experienced a negative impact from elephants were significantly less
likely to view elephant conservation as important. This may partially be due to older people
having a greater likelihood of having experienced negative interactions with elephants. Indeed,
we found that individuals older than 35 years had experienced more negative interactions with
elephants (56.3%) as opposed to those who were younger than 35 (43.3%) (post hoc chi-square
analysis: χ2 = 5.63, DF = 1, p = 0.018). In addition, individuals over 35 years of age were more
likely to work in the agricultural sector (χ2 = 26.02, DF = 1, p < 0.001), an employment area
directly affected by elephant crop raiding. Other factors may be at play here as well, potentially
including age-based differences in education level, family responsibilities and pressures, and
environmental views. Those working in agriculture, who tended to be older than 35 years of
age, also were less likely to unconditionally tolerate the presence of elephants in the area. This
suggests that, while it may be easier to include younger individuals in elephant conservation
efforts, it also is important to engage older individuals and those who work in agriculture, as
such individuals may have less supportive views overall, a longer history of interactions with
elephants, and potentially more locally relevant decision-making capability.
Contrary to other studies [
], we did not find an influence of gender on expressed
conservation attitudes. This may partially be due to the fact that there was not a major
difference in occupation by gender. For example, roughly half of the female participants generated
income through agriculture. However, men tended to make more money than women and
while not statistically significant, there was not a suggestive relationship between gender and
income level (post hoc chi-square analysis: χ2 = 3.536, DF = 1, p = 0.060) indicating important
discrepancies that may affect conservation attitudes. A study in India suggested that women
may have more negative views of elephants because they have greater responsibilities when it
came to family care, household support, and prevention of elephant conflicts [
]. In Africa, it
was suggested that more negative attitudes of women towards elephants were caused by their
dependence on agriculture and because of the higher risk of getting in contact with elephants
due to their daily duties [
]. While we did not identify any explicit gender-based differences in
expressed conservation attitudes, income disparity between men and women in this area may
contribute to underlying issues not identified by our study design.
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Although stated support for elephant conservation did not vary by income, lower income
households were less likely to support unconditional tolerance of elephants as opposed to
conditional tolerance (e.g., tolerance if they could be ensured they would not destroy their crops).
This makes sense, as for this group economic security is more at risk than for higher-income
families. Similarly, those who work in agriculture (and thus who tended to be older than 35
years of age) were less likely to support elephant unconditional tolerance of elephants in the
area. Interestingly, this result was not conflated with income level as there was not a significant
relationship between income level and employment sector (post hoc chi-square analysis:
χ2 = 0.397, DF = 1, p = .529). These results correspond to a study in Kenya that found people
working in agriculture to be less tolerant toward elephants than pastoral people [
], a study in
Congo were perceptions toward elephants of farmers were mostly negative [
] and a study in
the USA about citizens' attitudes toward wolf depredation, where occupation had the strongest
influence on tolerance of these carnivores [
]. This indicates that special incentives, outreach
approaches, and mitigation methods may be necessary for those at lower income levels and
those working in agriculture if elephant coexistence in western Thailand is to be realized.
An important result of this study was the finding that people who perceive benefits from
living near wild elephants were more likely to support their coexistence in the area, a positive
association also found in India [
], Cameroon [
], Congo [
] and Kenya [
benefits mentioned by respondents were not just financial- they included community
development, feelings of pride from hosting volunteers, and feelings of satisfaction/pride in doing
conservation work. Given this result, we conducted a post hoc analysis to see if benefits of
living near elephants could somewhat counteract past negative experiences with elephants.
Although the subgroup sample size was small and the result was not statistically significant
(post hoc chi-square analysis: χ2 = 1.082, DF = 1, p = 0.2981), individuals who had both
experienced negative experiences with elephants and who also perceived benefits of living
near elephants were slightly more likely to view elephant conservation as important (80.8%) as
opposed to those who had only ever experienced negative effects of elephants (74.8%). Overall,
our data suggests that engaging community members in conservation initiatives could
substantially increase their acceptance of elephants.
Similar to studies in other areas of high human-elephant conflict [
], most plantation
owners in this study reported having tried more than one deterrence method to keep elephants out
of their fields, with noise and explosives being most commonly utilized and considered most
effective. These methods were considered more effective than electric fences which were used
by just under half of the plantation owners and generally considered to be only
ªsemi-effective.º Well-maintained electric fences are effective in some situations [
], but their overall
effectiveness depends on the maintenance [
] and design of the structure, the clearance of
vegetation along the fence that can disrupt the power supply [
], and the learned behavior of
the elephants to destroy or avoid the electric fence [
]. Furthermore, linear barriers such as
electric fences, trenches, and other such large barriers may reduce habitat connectivity [
and limit elephant movement with negative implications on biodiversity and ecological
]. Although the sample size was relatively small, an important result of the deterrence
question is that noise and lights were evaluated as very effective by the plantation owners.
Traditional tools (manual torches/flashlights and noise-makers) could potentially be improved by
promoting motion-activated light and noise boxes. None of the respondents mentioned the
use of chili, a sustainable deterrence method that showed positive results in Kenya [
Beehive fencing is a smaller-barrier technique that may be effective since elephants are
afraid of bees [
]. This may be an important supplement to existing non-electric fences
which, at current, were mostly considered ªnot effectiveº by plantation owners in this study
10 / 14
(Table 4). Considering prevailing negative attitudes toward elephant conservation among
plantation owners, it is interesting that 80.4% of the plantation owners expressed willingness
to try beehive fences as a new deterrence method. In addition to preventing elephant damage
to plantations, this method may provide villagers with the financial incentive of
conservationfriendly, and therefore premium, honey production . However, research is needed to
analyze the effectiveness of beehive fences to deter crop-raiding elephants in Asia, and this is one
area of our ongoing research.
This study has increased understanding of the challenges household members and
plantation owners are facing in the Chong Sadao district of Thailand, an area of high
human-elephant conflict. Ultimately, no single mitigation method can address the multi-faceted causes
of the problem, which stems from increased development of original elephant habitat [
deterrence solutions to have a long-term effect, they must be combined with efforts to restore
natural elephant habitat, proper land use planning [
], and crop choices that are less attractive
to elephants [
]. Although respondents also suggested fencing the wildlife sanctuary so that
the elephants cannot get out, confining elephants in this way does not seem to be a viable
longterm solution for the current elephant population considering the degradation and
fragmentation of their habitat [
], carrying capacity of the area [
], reductions in genetic flow and
resulting inbreeding concerns (e.g., resilience against disease), and the fact that elephants
would not have access to the River Kwai Yai or corridors for migration in the event of natural
disasters. Participants in this study also noted the value of forest restoration and patrol teams,
adding water sources to wild elephant habitat, increased incentives for local communities, and
education of local school and community groups (Table 3).
A combination of the above ideas is likely required for long-term human-elephant
coexistence in the Chong Sadao district of Thailand. With continuously increasing conflicts and the
limited size of Salakpra Wildlife Sanctuary, elephant conservation strategies should not only
focus on restoring and maintaining available habitat but also on securing corridors to allow
elephants to move to additional habitats [
]. Farm-based bio-fencing, e.g. beehive fences
and utilizing crops that are disliked by elephants, such as ginger, lemongrass, chili, garlic and
onion , are potential solutions that can provide additional benefits to the human
population. Two encouraging outcomes of this study were that most household owners in the area
feel it is important to invest in elephant conservation (84.6%) and over a third of the
respondents reported perceived benefits of living near wild elephants. Overall, our results highlight
the value of plantation owners receiving benefits from living near elephants. Therefore, we
suggest the inclusion of plantation owners in conservation effortsÐspecifically, providing
plantation owners with incentives and support to implement effective alternative methods to
deter elephants, as the majority of the plantation owners (73.9%) are looking for such
solutions. To further encourage community participation, we suggest a community-based
conservation model in which stakeholders collaborate, including those working in agriculture and
those at lower income levels. Although much remains to be done, these findings suggest that
this area has potential to become a positive example of human-elephant coexistence.
S1 Appendix. Household questionnaire. The household questionnaire was conducted in
October 2015 amongst 410 households on the western boundaries of Thailand's Salakpra
S2 Appendix. Plantation owner questionnaire. The plantation owner questionnaire was con
ducted in March 2016 amongst 46 plantation owners on the western boundaries of Thailand's
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Salakpra Wildlife Sanctuary.
S3 Appendix. Descriptive results showing socio-economic variables and past experiences
with elephants (either negative experiences or perceived benefits) and residents' attitudes
toward elephant conservation and attitude toward elephant coexistence. Income was
quantified as households reporting more or less than 10,000 THB (301 USD) per year.
S1 Dataset. Data of household and plantation owner questionnaire.
We are grateful to the villagers of the Chong Sadao district for participating in this research and
to Siriporn Sriaram for the translation of the consent form and questionnaire. Thanks also to
Dr. Stephen Elliott, Jenna Bissell, Liesbeth Sluiter and students and facilitators of Miami
University's Project Dragonfly/Global Field Program for reviewing this paper prior to submission.
Conceptualization: Antoinette van de Water, Kevin Matteson.
Data curation: Antoinette van de Water.
Formal analysis: Antoinette van de Water, Kevin Matteson.
Funding acquisition: Antoinette van de Water.
Investigation: Antoinette van de Water.
Methodology: Antoinette van de Water, Kevin Matteson.
Project administration: Antoinette van de Water.
Resources: Antoinette van de Water.
Software: Antoinette van de Water, Kevin Matteson.
Supervision: Kevin Matteson.
Validation: Kevin Matteson.
Visualization: Antoinette van de Water, Kevin Matteson.
Writing ± original draft: Antoinette van de Water.
Writing ± review & editing: Antoinette van de Water, Kevin Matteson.
12 / 14
13 / 14
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