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Recent
Publications and Reviews
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Recent
Publications
Human
Carnivore Conflicts
Compensation and Insurance
Predation on Livestock &
Attacks on Humans
Models
Applied to Conflict Resolution
Application of Prevention
Measures and Guarding Animals
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Recent
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Nevin, O.T. and B.K. Gilbert. 2005. Perceived risk, displacement and
refuging in brown bears: positive impacts of ecotourism? Biological
Conservation 121(4):611-622
Ecotourism is a rapidly growing industry with unknown impacts on viewed
wildlife that may require novel management action. We examined the
impact of viewing activities on the behaviour of brown bears (Ursus arctos)
in coastal British Columbia.
Domination of the best feeding sites and human avoidance by large male
bears has consistently been reported. We, however, saw displacement in
time rather than space – during the viewing day large males were less
active than at other times, while females with cubs tended to be more
active.
In each year, females with cubs spent similarly high proportions of
their time fishing when people were present. In years with large male
activity, less time was spent fishing when people were absent. When
freed from the potential threat of large male bears, females with cubs
showed no measurable impact of controlled human activity.
Human presence at a feeding site impacts the behaviour of brown bears,
but not as expected. Temporal avoidance of human activity by large
males was observed; indications that they departed upon satiation,
before the arrival of morning tours, however, suggests that there was
little energetic impact. By displacing large males, viewing activities
created a temporal refuge, enhancing feeding opportunities for
subordinate age/sex classes. With the strong positive relationships
between mean female mass and litter size, this may in turn increase
population productivity.
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Graham, K.; Beckerman, A.P.; and Thirgood, S. 2005. Human–predator–prey conflicts: ecological correlates, prey losses and patterns of management. Biological Conservation 122: 159-171
Conflicts between humans and predators are the product of
socio-economic and political landscapes and are particularly
controversial because the resources concerned have economic value and
the predators involved are high profile and often legally protected. We
surveyed the current literature for information on ecological and
social factors common to human–predator–prey conflicts. We used this
information to examine whether losses to predators and patterns of
investment in husbandry could be linked to these factors. We found that
livestock losses to predators were low and were negatively associated
with net primary productivity and predator home range sizes, but were
not affected by predator density, methods of husbandry or human
population density. While there was no effect of husbandry on losses,
variation in husbandry was explained by net primary productivity,
predator density and percentage of stock killed by predators.
Inconsistent and sparse data across conflicts may have limited our
ability to identify important factors and resolve patterns, and
suggests that there is no reliable or consistent framework for
assessing and managing human–predator conflicts that involve game and
livestock species. Our approach highlights the type of data that could
be very informative to management if collected across a range of cases
and habitats.
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Woodroff, R., P. Lindsey, S. Romanachb, A. Steinb
and S.M.K. ole Ranahb. 2005. Livestock predation by endangered
Afrcan wild dogs (Lycaon pictus) in northern Kenya. Biological
Conservation 124 (2): 225-234.
Most large mammalian carnivores are
in global decline, principally due to conflict with livestock farmers. Because
endangered African wild dogs (Lycaon pictus) range widely, often beyond the
boundaries of protected areas, they may be particularly exposed to lethal
control by farmers, even where nominally protected by reserves. Hence,
effectively conserving wild dogs demands resolution of their conflicts with
farmers. We investigated livestock depredation by African wild dogs living
outside protected areas in northern Kenya. Scat analysis confirmed the
distribution of depredation events reported by local farmers, indicating that
farmer reports – collated by local Community Liaison Officers – gave a
reasonably good index of the true pattern of depredation. Although livestock
were abundant throughout the study area, depredation was exceedingly uncommon
(approximately one attack per 1000 km2 per year) and the costs of tolerating
wild dogs were very low (US $3.40/wilddog/year) where wild
prey remained, even at low densities. However, where wild prey were seriously
depleted, wild dogs killed livestock repeatedly, and the cost of sustaining them
rose to US $389/wilddog/year. Hence, although wild dogs had a negligible
economic impact in the region, their impact was locally severe. Conservation
activities for wild dogs are most likely to be successful if targeted at areas
where wild prey remain, and where traditional herding practices have been
retained.
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The Sheep & Goat Research Journal
No 19 has dedicated a special edition on predation,
predation management and prevention measures.
Table of contents:
Predation and Livestock Production Perspective and Overview
Author: Maurice Shelton Economic Impact of Sheep Predation in
the United States Author: Keithly Jones The History of Federal and Cooperative
Animal Damage Control Author: Donald W. Hawthorne Status and Management of Coyote
Depredations in the Eastern United States Author: J. M.
Houben The Coyote in the
Edwards Plateau of Texas — an Update Author: Gary Nunley Coyote Predation Management: An
Economic Analysis of Increased Antelope Recruitment and Cattle Production in
South Central Wyoming Author: Stephanie A. Shwiff and Rod J.
Merrell Feral Swine Impacts
on Agriculture and the Environment Author: Nathan W. Seward, Kurt C.
VerCauteren, Gary W. Witmer, and Richard M. Engeman Managing Wolf Depredation in the United
States: Past, Present, and Future Author: Stewart Breck and Tom
Meier Compensation Programs
in Wyoming for Livestock Depredation by Large Carnivores Author: M. T.
Bruscino and T. L. Cleveland Direct, Spillover, and Intangible
Benefits of Predation Management Author: Stephanie A. Shwiff and Mike
J. Bodenchuk Indirect Effects
of Carnivores on Livestock Foraging Behavior and Production Author:
Larry D. Howery and Thomas J. DeLiberto Livestock Depredations by Black
Vultures Author: M. L. Avery and J. L. Cummings Non-lethal Alternatives for Predation
Management Author: John A. Shivik Use of Livestock Guarding Animals to
Reduce Predation on Livestock Author: W. F. Andelt Predacides for Canid Predation
Management Author: K. A. Fagerstone, J. J. Johnston, and P. J.
Savarie Selective Targeting
of Alpha Coyotes to Stop Sheep Depredation Author: M.M.
Jaeger Using Genetic Analyses
to Identify Predators Author: C. L. Williams andJ. J.
Johnston Economic Impact of
Protected Large Carnivores on Sheep Farming in Norway Author: Leif
Jarle Asheim and Ivar Mysterud Review of Canid Management in Australia
for the Protection of Livestock and Wildlife - Potential Application to Coyote
Management Author: L.R. Allen and P.J.S. Fleming
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People and Wildlife, Conflict or Co-existence? Edited by Rosie Woodroffe,
Simon Thirgood, Alan Rabinowitz Series: Conservation Biology (No. 9)
Human-wildlife conflict is a major issue
in conservation. As people encroach into natural habitats, and as
conservation efforts restore wildlife to areas where they may have been
absent for generations, contact between people and wild animals is
growing. Some species, even the beautiful and endangered, can have
serious impacts on human lives and livelihoods. Tigers kill people,
elephants destroy crops and African wild dogs devastate sheep herds
left unattended. Historically, people have responded to these threats
by killing wildlife wherever possible, and this has led to the
endangerment of many species that are difficult neighbours. The urgent
need to conserve such species, however, demands coexistence of people
and endangered wildlife. This book presents a variety of solutions to
human-wildlife conflicts, including novel and traditional farming
practices, offsetting the costs of wildlife damage through hunting and
tourism, and the development of local and national policies. • Covers a major, and emerging, conservation issue • Applies equally to conservation in developed and developing countries • Multi-disciplinary approach, involving ecologists, social scientists, managers and policymakers
Contents Foreword
John G. Robinson; 1. The impact of human-wildlife conflict on natural
systems Rosie Woodroffe, Simon Thirgood and Alan Rabinowitz; 2. The
impact of human-wildlife conflict on human lives and livelihoods Simon
Thirgood, Rosie Woodroffe and Alan Rabinowitz; 3. Characterisation and
prevention of attacks on humans Howard Quigley and Stephen Herrero; 4.
Non-lethal techniques for reducing depredation Urs Breitenmoser,
Christof Angst, Jean-Marc Landry, Christine Breitenmoser-Wursten, John
D. C. Linnell and Jean-Marc Weber; 5. Techniques to reduce crop loss:
human and technical dimensions in Africa F. V. Osborn and C. M. Hill;
6. Evaluating lethal control in the management of human-wildlife
conflict Adrian Treves and Lisa Naughton-Treves; 7. Bearing the cost of
human-wildlife conflict: the challenges of compensation schemes Philip
J. Nyhus, Steven A. Osofsky, Paul Ferraro, Francine Madden and Hank
Fischer; 8. Increasing the value of wildlife through non-consumptive
use? Deconstructing the myths of ecotourism and community-based tourism
in the tropics M. J. Walpole and C. R. Thouless; 9. Does extractive use
provide opportunities to offset conflicts between people and wildlife?
N. Leader-Williams and J. M. Hutton; 10. Zoning as a means of
mitigating conflicts with large carnivores: principles and reality John
D. C. Linnell, Erlend Birkeland Nilsen, Unni Stobet Lande, Ivar
Herfindal, John Odden, Ketil Skogen, Reidar Andersen and Urs
Breitenmoser; 11. From conflict to coexistence: a case study of geese
and agriculture in Scotland David Cope, Juliet Vickery and Marcus
Rowcliffe; 12. Hen harriers and red grouse: the ecology of a conflict
Simon Thirgood and Steve Redpath; 13. Understanding and resolving the
black-tailed prairie dog conservation challenge Richard P. Reading,
Lauren McCain, Tim W. Clark and Brian J. Miller; 14. People and
elephants in Shimba Hills, Kenya Timothy J. Knickerbocker and John
Waithaka; 15. Safari hunting and conservation on communal land in
southern Africa Dale Lewis and John Jackson; 16. Socioecological
factors shaping local support for wildlife: crop raiding by elephants
and other wildlife in Africa Lisa Naughton-Treves and Adrian Treves;
17. Jaguars and livestock: living with the world’s third largest cat
Alan Rabinowitz; 18. People and predators in Laikipia District, Kenya
Laurence G. Frank, Rosie Woodroffe and Mordecai O. Ogada; 19. Searching
for the coexistence recipe: a case study of conflicts between people
and tigers in the Russian far east Dale Miquelle, Igor Nikolaev, John
Goodrich, Boris Litvinov, Evgeny Smirnov and Evgeny Suvorov; 20. A tale
of two countries: large carnivore depredations and compensation schemes
in Sweden and Norway Jon E. Swenson and Henrik Andren; 21. Managing
wolf-human conflict in the northwestern United States Edward E. Bangs,
Joseph A. Fontaine, Michael D. Jimenez, Thomas J. Meier, Elizabeth H.
Bradley, Carter C. Niemeyer, Douglas W. Smith, Curt M. Mack, Val Asher
and John K. Oakleaf; 22. Policies for reducing human-wildlife conflict:
a Kenya case study David Western and John Waithaka; 23. An
ecology-based policy framework for human-tiger coexistence in India K.
Ullas Karanth and Rajesh Gopal; 24. The future of coexistence:
resolving human-wildlife conflicts in a changing world Rosie Woodroffe,
Simon Thirgood and Alan Rabinowitz.
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Repeated wild boar
depredation on adult sheep (in French)
Cas répétés de prédation de sangliers sur des ovins adultes
Please find the information on the website of the ONCFS
(Office Nationale de la Chasse et de la Faune Sauvage)
and download
at: http://www.oncfs.gouv.fr/events/point_faune/suivi-sanitaire/sangliers_ovins.pdf
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Huygens,
O.C., F.T. van Manen , D.A. Martorello, H. Hayashi and J. Ishida. 2004.
Relationships between Asiatic black bear kills and depredation costs in
Nagano Prefecture, Japan. Ursus 15(2):197–202.
Over
1,000 Asiatic black bears (Ursus thibetanus) are killed each year in
Japan to control depredation activity. Our objective was to determine if
killing bears reduces depredation costs. We focused our study on Nagano
Prefecture, where 2,562 nuisance bears were reported killed and where
reported depredation cost exceeded ¥1,430 million between 1979 and
1999. We used mixed models with repeated measures to determine if annual
depredation costs were associated with the number of bears killed. Our
dataset included 15 years (1985–99) of kill and cost data for 122
municipal jurisdictions within 10 regions. We performed analyses at the
regional level based on combined harvest and nuisance kill data, and at
the municipal level based only on nuisance kill data. We classified the
number of kills into 3 classes (low, medium, high). Analyses were
repeated using prior-year kills to examine whether a possible time-lag
existed. Annual depredation costs were positively associated with the
kill data at the regional level (F = 5.51; 2, 72.3 df; P = 0.006) during
the same year. However, we observed no association based on prior-year
kill data (F = 0.96; 2, 65.1; P = 0.390), suggesting that depredation
costs and bear kills are a function of nuisance bear numbers rather than
reflecting a causal relationship between the 2 measures. Nuisance bear
numbers may in turn be affected either by the availability of natural
foods or by general population trends. At the municipal level,
depredation costs were not associated with the number of nuisance bears
killed during the same year (F = 1.36; 2, 466 df; P = 0.258) or the
prior year (F = 0.42; 2, 459 df; P = 0.656). Our results suggest that
systematically killing Asiatic bears may not be an effective tool for
mitigating nuisance costs. In municipalities where nuisance costs remain
high, we recommend that alternative methods be tested for their efficacy
in mitigating costs. Such methods may include public education, changing
or removing financial incentives to kill bears, changing crop rotations
to crops that are not attractive to bears in risk areas, promoting
natural food production, using electric fences, and applying aversive
conditioning techniques.
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Kvam,
T., K. M. Rosendal, E.M. Rosvold, A. Aune, S.M. Rosendal, K. Brøndbo,
P.F. Moa. (2004).
Sheep mortality in an area close to a major city 2002-2003.
Nord-Trøndelag University College HINT Utredning 55: 1-57. (In
Norwegian)
Summer
mortality of free-grazing lambs in two forested grazing areas west of
the Norwegian capital Oslo had increased dramatically from 3-6% to
11-17% between 1997 and 2001. To identify causes of mortality lambs were
equipped with radio-transmitters in 2002 (n=317) and 2003 (n=299). All
of the other lambs in the flocks were equipped with "dummy"
transmitters. Mortality among the radio-collared lambs was 18% in 2002
and 12% in 2003. Lynx were responsible for 65% and 24% of mortality in
these radio-collared lambs in 2002 and 2003, respectively. Other causes
of mortality included disease, drowning, red fox predation and problems
with insect larvae.
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Gunther, K.A., M.A.
Haroldson, K. Frey, S.L. Cain, J. Copeland and C.C. Schwartz. 2004.
Grizzly bear–human conflicts in the Greater Yellowstone ecosystem,
1992–2000. Ursus 15(1):10–24.
For many years, the primary
strategy for managing grizzly bears (Ursus arctos) that came into
conflict with humans in the Greater Yellowstone Ecosystem (GYE) was to
capture and translocate the offending bears away from conflict sites.
Translocation usually only temporarily alleviated the problems and most
often did not result in long-term solutions. Wildlife managers needed to
be able to predict the causes, types, locations, and trends of conflicts
to more efficiently allocate resources for pro-active rather than
reactive management actions. To address this need, we recorded all
grizzly bear–human conflicts reported in the GYE during 1992–2000.
We analyzed trends in conflicts over time (increasing or decreasing),
geographic location on macro- (inside or outside of the designated
Yellowstone Grizzly Bear Recovery Zone [YGBRZ]) and micro- (geographic
location) scales, land ownership (public or private), and relationship
to the seasonal availability of bear foods. We recorded 995 grizzly bear–human
conflicts in the GYE. Fifty-three percent of the conflicts occurred
outside and 47% inside of the YGBRZ boundary. Fifty-nine percent of the
conflicts occurred on public and 41% on private land. Incidents of bears
damaging property and obtaining anthropogenic foods were inversely
correlated to the abundance of naturally occurring bear foods. Livestock
depredations occurred independent of the availability of bear foods. To
further aid in prioritizing management strategies to reduce conflicts,
we also analyzed conflicts in relation to subsequent human-caused
grizzly bear mortality. There were 74 human-caused grizzly bear
mortalities during the study, primarily from killing bears in defense of
life and property (43%) and management removal of bears involved in bear–human
conflicts (28%). Other sources of human-caused mortality included
illegal kills, electrocution by downed power-lines, mistaken
identification by American black bear (Ursus americanus) hunters, and
vehicle strikes. This analysis will help provide wildlife managers the
information necessary to develop strategies designed to prevent
conflicts from occurring rather than reacting to conflicts after they
occur.
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Mishra,
C. 2004.
Livestock depredation by large carnivores in the Indian
trans-Himalaya: conflict perceptions and conservation prospects.
Environmental Conservation 4:338–343.
Livestock
depredation by the snow leopard, Uncia uncia, and the wolf, Canis
lupus, has resulted in a human-wildlife conflict that hinders the
conservation of these globally-threatened species throughout their range.
This paper analyses the alleged economic loss due to livestock
depredation by these carnivores, and the retaliatory responses of an
agro-pastoral community around Kibber Wildlife Sanctuary in the Indian
trans-Himalaya. The three villages studied (80 households) attributed a
total of 189 livestock deaths (18% of the livestock holding) over a
period of 18 months to wild predators, and this would amount to a loss
per household equivalent to half the average annual per capita income.
The financial compensation received by the villagers from the Government
amounted to 3% of the perceived annual loss. Recent intensification of
the conflict seems related to a 37.7% increase in livestock holding in
the last decade. Villagers have been killing the wolf, though apparently
not the snow leopard. A self-financed compensation scheme, and
modification of existing livestock pens are suggested as area-specific
short-term measures to reduce the conflict. The need to address the
problem of increasing livestock holding in the long run is emphasized.
Download
at: http://www.ncf-india.org/pubs/Mishra%201997.pdf
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Jo Kleiven, Tore Bjerke % Bjorn P.
Kaltenborn, 2004.
Factors influencing the social acceptability of large carnivore
behaviours.
Biodiversity and Conservation, 13(9): 1647-1658.
A survey on attitudes toward large carnivores was conducted in a representative sample of the Norwegian population (n = 3134). People were asked about the acceptability of carnivores living in remote
wilderness, close to where people live, killing livestock, killing pets, or threatening
humans. Large differences in acceptability appeared across the five
situations. Wolves and bears were less acceptable than lynx and wolverines when observed close to where people live. Negative associations were found between acceptability and lack of personal
control, economic loss, and respondents' age. Acceptability was higher among males than among
females, and higher among urban than among rural residents. The results showed that general measures of attitudes alone toward large carnivores were of limited value in wildlife
management. The situational and social specificity of these attitudes should be given more
attention.
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Richard H. Lamprey & Robin S. Reid,
2004.
Expansion of human settlement in Kenya's Maasai Mara: what future for pastoralism and
wildlife?
Journal of Biogeography, 31(6): 997-1032.
Aim Wildlife and pastoral peoples have lived side-by-side in the Mara ecosystem of south-western Kenya for at least 2000
years. Recent changes in human population and landuse are jeopardizing this
co-existence. The aim of the study is to determine the viability of pastoralism and wildlife conservation in Maasai ranches around the Maasai Mara National Reserve
(MMNR). Location A study area of 2250 km2 was selected in the northern part of the Serengeti-Mara
ecosystem, encompassing group ranches adjoining the MMNR. Emphasis is placed on Koyake Group Ranch, a rangeland area owned by Maasai
pastoralists, and one of Kenya's major wildlife tourism areas. Methods Maasai settlement
patterns, vegetation, livestock numbers and wildlife numbers were analysed over a 50-year
period. Settlement distributions and vegetation changes were determined from aerial photography and aerial surveys of 1950, 1961, 1967, 1974, 1983 and 1999. Livestock and wildlife numbers were determined from re-analysis of systematic reconnaissance flights conducted by the Kenya Government from 1977 to 2000, and from ground counts in 2002. Corroborating data on livestock numbers were obtained from aerial photography of Maasai settlements in 2001. Trends in livestock were related to
rainfall, and to vegetation production as indicated by the seasonal Normalized Difference Vegetation Index. With these data
sets, per capita livestock holdings were determined for the period 1980-2000, a period of fluctuating rainfall and primary
production. Results For the first half of the twentieth century, the Mara was infested with
tsetse-flies, and the Maasai were confined to the Lemek Valley area to the north of the
MMNR. During the early 1960s, active tsetse-control measures by both government and the Maasai led to the destruction of woodlands across the Mara and the retreat of tsetse flies. The Maasai were then able to expand their settlement area south towards
MMNR. Meanwhile, wildebeest (Connochaetes taurinus) from the increasing Serengeti population began to spill into the Mara rangelands each dry
season, leading to direct competition between livestock and wildlife. Group ranches were established in the area in 1970 to formalize land tenure for the
Maasai. By the late 1980s, with rapid population growth, new settlement areas had been established at Talek and other parts adjacent to the
MMNR. Over the period 1983-99, the number of Maasai bomas in Koyake has increased at 6.4% per annum
(pa), and the human population at 4.4% pa. Over the same period, cattle numbers on Koyake varied from 20,000 to 45,000
(average 25,000), in relation to total rainfall received over the previous 2
years. The rangelands of the Mara cannot support a greater cattle population under current pastoral
practices. Conclusions With the rapid increase in human settlement in the
Mara, and with imminent land privatization, it is probable that wildlife populations on Koyake will decline significantly in the next 3-5
years. Per capita livestock holdings on the ranch have now fallen to three livestock
units/reference adult, well below minimum pastoral subsistence
requirements. During the 1980s and 90s the Maasai diversified their livelihoods to generate revenues from
tourism, small-scale agriculture and land-leases for mechanized
cultivation. However, there is a massive imbalance in tourism incomes in favour of a small
elite. In 1999 the membership of Koyake voted to subdivide the ranch into individual
holdings. In 2003 the subdivision survey allocated plots of 60 ha average size to 1020 ranch
members. This land privatization may result in increased cultivation and
fencing, the exclusion of wildlife, and the decline of tourism as a revenue
generator. This unique pastoral/wildlife system will shortly be lost unless land holdings can be managed to maintain the free movement of livestock and
wildlife.
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Nina Fascione, Aimee Delach , Martin E. Smith,
2004.
People and Predators: From Conflict to Coexistence
Island Press, available in October 2004.
Carnivores provide innumerable ecological benefits and play a unique role in preserving and maintaining ecosystem services and
function, but at the same time they can create serious problems for human
populations. A key question for conservation biologists and wildlife managers is how to manage the world's carnivore populations to conserve this important natural resource while mitigating harmful impacts on
humans.
In People and Predators, leading scientists and researchers offer case studies of human-carnivore conflicts in a variety of
landscapes, including rural, urban, and political. The book covers a diverse range of
taxa, geographic regions, and conflict scenarios, with each chapter dealing with a specific facet of human-carnivore interactions and offering
practical, concrete approaches to resolving the conflict under
consideration. Chapters provide background on particular problems and describe how challenges have been met or what research or tools are still needed to resolve the
conflicts.
People and Predators will helps readers to better understand issues of carnivore conservation in the 21st century, and provides practical tools for resolving many of the problems that stand between us and a future in which carnivores fulfill their historic ecological roles.
The book can be
ordered at Island
Press
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Athreya, V.R.; Thakur, S.S.; Chaudhuri, S.; and Belsare A.V. 2004.
A study of the man-leopard conflict in the Junnar Forest Division, Pune District, Maharashtra.
Submitted to the Office of the Chief Wildlife Warden, Nagpur. Maharashtra Forest Department.
The western Indian state of Maharashtra, with a population of around 500 leopards (Panthera pardus fusca), has in recent times seen an escalation in man – leopard conflicts. This very detailed study measures the degree of conflict, looks at spatial and temporal patterns in conflict intensity –including two regions that differ in topological and socio-economic factors- and provides recommendations for dealing with problem leopards.
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report as pdf
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Rolf
D. Baldus (Ed.), 2004
Lion Conservation in Tanzania Leads to
Serious Human – Lion Conflicts with
a Case Study of a Man-Eating Lion Killing 35 People
GTZ Wildlife Programme in Tanzania, Wildlife Divisioin, Dar Es Salaam
Executive Summary
Tanzania has the largest lion populations on the continent, and they are
not threatened with extinction. The
population is stable in nearly all protected areas.
It is of significant size and mostly stable outside these
protected areas. Exact data is lacking, but the lion-population has most
probably been reduced during the last decades in areas with high
population growth, expansion of agriculture and livestock husbandry and
in some areas in North–western Tanzania where an influx of refugees
has occurred.
Although the lion range has been reduced in Tanzania in the last 50
years due to human population growth and agricultural expansion, lions
benefit from a widespread network of protected areas (30 % of the
country) and from vast tracts of unpopulated and populated lands with
relatively undisturbed habitats suitable for lions.
Lions are protected throughout the country, and it is the policy of the
Government to conserve them both inside and outside of the protected
areas, as they are part of biodiversity.
Some problem-animal control in extreme cases of human–lion
conflict occurs, and approximately 250 lions are shot per year by
tourist hunters, which is overall a sustainable yield.
Empirical evidence from the Selous Game Reserve shows that
off-take levels are sustainable. Lions play a major role in the hunting industry, which is
economically significant and greatly contributes to paying the
conservation bill. As a consequence of the Wildlife Policy of Tanzania
(1998) Wildlife Management Areas (WMA) are being created where villages
manage the wildlife on their land and are increasingly earning revenues,
to which controlled lion hunting will contribute.
This will raise tolerance levels towards wildlife including
dangerous game and it will improve the possibilities for wildlife as a
land use option, thereby safeguarding areas which otherwise would be
lost for wildlife.
As a consequence of this relatively good conservation record, in
particular when compared to many other countries, lions are a major
source of conflicts with the human population.
We estimate that around 200 people are killed in Tanzania every
year by dangerous animals, of which around one third on an average could
be by lions. Lion inflicted
injuries and loss of life have been and still are more acute in Southern
Tanzania. The paper
presents details of one recent case where not less than 35 people were
killed by one or several man-eating lions in an area of 350 km² just
150 km south–west of Dar es Salaam between the Rufiji River and the
Selous Game Reserve within 20 months. It is one of the biggest
individual cases of man-eating by one or two lions ever recorded and
with the information presented here it is at the same time one of the
best documented cases, at least in Tanzania. Further analysis might help
to understand the underlying causes better and thereby assist in
devising strategies to protect humans better without eradicating the
lions.
The reasons which have led to such a tremendous loss of lions in Kenya
or in West-Africa are not connected to international trade. To upgrade
the lion to CITES Appendix I as proposed by Kenya would not address any
of the issues that adversely affect lion populations, i.e. loss of
habitat to agriculture, problem animal control, poaching and killing of
lions by pastoralists. It
would however, make the hunting of lions more difficult or even
impossible. This
hunting is sustainable and giving value to lions is one major element in
the range of conservation tools which Tanzania has successfully applied
to protect the future of the lion.
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report as word file
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Jethva B.D. & Y.V. Jhala, 2004.
Foraging ecology, economics and
conservation of Indian wolves in the Bhal
region of Gujarat, Western India.
Biological Conservation, 116: 351-357.
Abstract
We
determined the food habits of the endangered Indian wolf Canis lupus
pallipes in the Bhal region of Gujarat, western India by analyzing 1246
wolf scats from five packs by estimating prey availability and by
monitoring radio-tagged wolves from three packs for 1994 hour. The
frequency of occurrence of blackbuck Antelope cervicapra remains in
scats was 55.5%, followed by cattle (25.7%), nilgai Boselaphus
tragocamelus (6.3%); and as others (<5%). The frequency of food items
in scats of different wolf packs reflected their relative availability.
For cattle the distinction between scavenging and predation was only
possible through continuous monitoring. The average feeding interval
obtained from monitoring was 3.6[plus or minus] 0.7 (S.E.) days and the
average consumption/wolf/day was 1.8[plus or minus] 0.3 (S.E.) Kg. Adult
male blackbuck formed most (70%) of the biomass consumed by wolves
whereas cattle carcasses and cattle actually killed by wolves
contributed 14 and 8%, respectively. Predation on cattle therefore was
low and translated in an estimated loss of Rs. 821 (US$ 17) per village
per annum. We propose that landscapes such as the Bhal with high wolf
densities, high natural prey availability and consequently low
human-wolf conflict levels should be prioritized as prime sites for wolf
conservation efforts.
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Capitani,
C., I. Bertelli, P. Varuzza , M. Scandura & M. Apollonio,
2004.
A comparative analysis of wolf (Canis lupus) diet in three different Italian ecosystems.
Mammalian Biology 69: 1-10.
Abstract
To verify food habit flexibility of wolf populations under different ecological conditions, scats collected year round were analysed in three study areas and diet composition of resident packs was compared. The three study areas, representing Alpine (SV), Apennine (PM) and Mediterranean (CV) ecosystems, are rich in wild ungulates, which differ in number of species and relative abundance; livestock is also present. Wild ungulates were the main source of food, accounting for 89.4%–95.1% of the diet. Livestock, instead, scarsely reached 8% of annual mean percent volume in any one area, and only in the Alps did they play a major role in autumn. Other food items constituted less than 5% of annual mean percent volume. Variations in the proportions of use of wild ungulate categories were observed among the study areas, although some patterns of intraspecific selection emerged in each area. Finally, differences both in the relationships between utilisation and availability of preys, and in trophic niche breadth were discussed in relation to environmental features and colonization
patterns. Back
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Kleiven,
J., T. Bjerke & B.P. Kaltenborn, 2004.
Factors influencing the social acceptability of large carnivore behaviours.
Biodiversity and Conservation, 9: 1647-1658. Abstract
A survey on attitudes toward large carnivores was conducted in a representative sample of the Norwegian population (n = 3134). People were asked about the acceptability of carnivores living in remote wilderness, close to where people live, killing livestock, killing pets, or threatening humans. Large differences in acceptability appeared across the five situations. Wolves and bears were less acceptable than lynx and wolverines when observed close to where people live. Negative associations were found between acceptability and lack of personal control, economic loss, and respondents' age. Acceptability was higher among males than among females, and higher among urban than among rural residents. The results showed that general measures of attitudes alone toward large carnivores were of limited value in wildlife management. The situational and social specificity of these attitudes should be given more
attention. Back
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Patterson, B.D., S. M. Kasiki, E. Selempo and R.W.
Kays, 2004.
Livestock predation by lions (Panthera leo) and other carnivores on ranches neighboring Tsavo National Parks, Kenya.
Biological Conservation 119: 507-516. Abstract
Lion conflicts with humans stemming from their depredations on livestock are largely responsible for their catastrophic decline, from 200,000 to 22,600 (90%) in only 20 years. Understanding patterns associated with such predation can be used to mitigate its effects and promote continued coexistence of lions and human. We analyzed attacks on livestock over a four-year period on two arid-land ranches neighboring Tsavo East National Park, Kenya. A total of 312 attacks claiming 433 head of stock were examined. Lions were responsible for 85.9% of the attacks; spotted hyenas and cheetahs were the other predators responsible. Lions and hyenas attacked mainly cattle and did so at night, whereas cheetahs almost exclusively took smaller sheep and goats. There was no temporal autocorrelation of daily losses, suggesting that the attacks are independent events. Both number of attacks and number of stock killed showed significant seasonal differences, and their monthly totals correlated positively with precipitation. Intensified predation in the wet season differs from patterns of lion predation elsewhere but reinforces the pattern that large carnivores take more livestock when native prey are most difficult to find and kill. On average, wildlife attacks claimed 2.4% of range stock annually, and livestock represented ca 5.8% of the diet of ranch lions. This predation represented 2.6% of the herd's estimated economic value, and cost the ranches $8,749 per annum. Each lion cost ranchers approximately $290 per year in depredations.
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TREVES
ADRIAN , LISA NAUGHTON-TREVES, ELIZABETH K. HARPER, DAVID J. MLADENOFF, ROBERT A. ROSE, THEODORE A.
SICKLEY, AND ADRIAN P. WYDEVEN, 2004.
Predicting Human-Carnivore Conflict: a Spatial Model Derived from 25 Years of Data on Wolf Predation on Livestock.
Conservation Biology 18, 114-125. Abstract
Many carnivore populations escaped extinction during the twentieth century as a result of legal protections, habitat restoration, and changes in public attitudes. However, encounters between carnivores, livestock, and humans are increasing in some areas, raising concerns about the costs of carnivore conservation. We present a method to predict sites of human-carnivore conflicts regionally, using as an example the mixed forest-agriculture landscapes of Wisconsin and Minnesota (U.S.A.). We used a matched-pair analysis of 17 landscape variables in a geographic information system to discriminate affected areas from unaffected areas at two spatial scales (townships and farms). Wolves (Canis lupus) selectively preyed on livestock in townships with high proportions of pasture and high densities of deer (Odocoileus virginianus) combined with low proportions of crop lands, coniferous forest, herbaceous wetlands, and open water. These variables plus road density and farm size also appeared to predict risk for individual farms when we considered Minnesota alone. In Wisconsin only, farm size, crop lands, and road density were associated with the risk of wolf attack on livestock. At the level of townships, we generated two state-wide maps to predict the extent and location of future predation on livestock. Our approach can be applied wherever spatial data are available on sites of conflict between wildlife and
humans. Back
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REDPATH, S. M. , B.
E. ARROYO, F. M. LECKIE, P. BACON, N. BAYFIELD, R. J. GUTIÉRREZ, AND S.
J. THIRGOOD, 2004.
Using Decision Modeling with Stakeholders to Reduce Human-Wildlife Conflict: a Raptor-Grouse Case Study.
Conservation Biology 18: 350-359.
Abstract
The successful resolution of human-wildlife conflicts requires the participation of local communities and other stakeholder groups in formulating management decisions. In the uplands of the United Kingdom, a controversial conservation issue concerns the relationship between the conservation of a legally protected raptor, the Hen Harrier (Circus cyaneus) and the management of a gamebird, the Red Grouse (Lagopus lagopus scoticus). We used multicriteria analysis to evaluate the perspectives of two groups of stakeholders, grouse managers and raptor conservationists, and the acceptability to them of different management solutions to this conflict. Both groups quantified the relative importance of evaluation criteria and used these as a basis for comparing different upland and Hen Harrier management options. In relation to upland management, grouse managers placed more importance on economic criteria than did raptor conservationists, who valued natural-environment criteria more highly. Intensively managed grouse moors, involving the control of harrier numbers, were ranked most highly by grouse managers and managed nature reserves by raptor conservationists, but both groups also ranked legally managed grouse moors highly. When evaluating Hen Harrier management options, grouse managers considered time scale and cost the most important criteria, whereas raptor conservationists considered the effects on harrier populations to be most important. Harrier quota schemes were the management solution most favored by grouse managers, whereas raptor conservationists preferred allowing harriers to attain natural densities. Notably, however, one technique that has already been partly tested in the field-the use of diversionary feeding was scored highly by both groups and thus holds promise for some form of compromise. This exercise highlighted the value of these objective techniques for developing dialog and trust between stakeholder groups, and it highlighted the need to conduct further research to test the effectiveness of different management options. There was broad agreement that the workshop moved the prior positions of individual stakeholders and was a valuable tool in helping to resolve human-wildlife
conflicts.
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Burri Antoine , Eva-Maria Kläy, Jean-Marc
Landry, Tiziano Maddalena, Peter Oggier, Chiara Solari, Damiano
Torriani, Jean-Marc Weber, 2004.
Rapport final, Projet Loup Suisse – Prévention, 1999 – 2003. (in
French and German only)
January 13, 1999, at the time of a press
conference held in Brig, the Swiss Agency for the Environment, Forest an
Landscape (SAEFL) launched the Swiss Wolf Project (SWP). Its general
objective? To seek solutions within the conflicts generated by the
presence of the wolf. Coordinated by the KORA, the project defined
itself on three principal axes:prevention, information and monitoring.
With the main objectives, the development and the evaluation of
prevention measures of the damage to livestock, prevention
unquestionably constituted the backbone of the mandate. The project was
a lot inspired by prevention measures applied in regions, large
carnivores never disappeared. Thus, we recommended the use of shepherds
and protection animals (dogs, donkeys) as well as the regrouping of
sheep in electrified enclosures at least at night. At the end of 2003,
the SWP changed its structure and the prevention became the competence
of agriculture. We present here the experiences gained during five years
of our mandate.
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Human
Carnivore Conflicts
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Gunther, K.A., M.A.
Haroldson, K. Frey, S.L. Cain, J. Copeland and C.C. Schwartz. 2004.
Grizzly bear–human conflicts in the Greater Yellowstone ecosystem,
1992–2000. Ursus 15(1):10–24.
For many years, the primary
strategy for managing grizzly bears (Ursus arctos) that came into
conflict with humans in the Greater Yellowstone Ecosystem (GYE) was to
capture and translocate the offending bears away from conflict sites.
Translocation usually only temporarily alleviated the problems and most
often did not result in long-term solutions. Wildlife managers needed to
be able to predict the causes, types, locations, and trends of conflicts
to more efficiently allocate resources for pro-active rather than
reactive management actions. To address this need, we recorded all
grizzly bear–human conflicts reported in the GYE during 1992–2000.
We analyzed trends in conflicts over time (increasing or decreasing),
geographic location on macro- (inside or outside of the designated
Yellowstone Grizzly Bear Recovery Zone [YGBRZ]) and micro- (geographic
location) scales, land ownership (public or private), and relationship
to the seasonal availability of bear foods. We recorded 995 grizzly bear–human
conflicts in the GYE. Fifty-three percent of the conflicts occurred
outside and 47% inside of the YGBRZ boundary. Fifty-nine percent of the
conflicts occurred on public and 41% on private land. Incidents of bears
damaging property and obtaining anthropogenic foods were inversely
correlated to the abundance of naturally occurring bear foods. Livestock
depredations occurred independent of the availability of bear foods. To
further aid in prioritizing management strategies to reduce conflicts,
we also analyzed conflicts in relation to subsequent human-caused
grizzly bear mortality. There were 74 human-caused grizzly bear
mortalities during the study, primarily from killing bears in defense of
life and property (43%) and management removal of bears involved in bear–human
conflicts (28%). Other sources of human-caused mortality included
illegal kills, electrocution by downed power-lines, mistaken
identification by American black bear (Ursus americanus) hunters, and
vehicle strikes. This analysis will help provide wildlife managers the
information necessary to develop strategies designed to prevent
conflicts from occurring rather than reacting to conflicts after they
occur.
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Mishra,
C. 2004.
Livestock depredation by large carnivores in the Indian
trans-Himalaya: conflict perceptions and conservation prospects.
Environmental Conservation 4:338–343.
Livestock
depredation by the snow leopard, Uncia uncia, and the wolf, Canis
lupus, has resulted in a human-wildlife conflict that hinders the
conservation of these globally-threatened species throughout their range.
This paper analyses the alleged economic loss due to livestock
depredation by these carnivores, and the retaliatory responses of an
agro-pastoral community around Kibber Wildlife Sanctuary in the Indian
trans-Himalaya. The three villages studied (80 households) attributed a
total of 189 livestock deaths (18% of the livestock holding) over a
period of 18 months to wild predators, and this would amount to a loss
per household equivalent to half the average annual per capita income.
The financial compensation received by the villagers from the Government
amounted to 3% of the perceived annual loss. Recent intensification of
the conflict seems related to a 37.7% increase in livestock holding in
the last decade. Villagers have been killing the wolf, though apparently
not the snow leopard. A self-financed compensation scheme, and
modification of existing livestock pens are suggested as area-specific
short-term measures to reduce the conflict. The need to address the
problem of increasing livestock holding in the long run is emphasized.
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at: http://www.ncf-india.org/pubs/Mishra%201997.pdf
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Jo Kleiven, Tore Bjerke % Bjorn P.
Kaltenborn, 2004.
Factors influencing the social acceptability of large carnivore
behaviours.
Biodiversity and Conservation, 13(9): 1647-1658.
A survey on attitudes toward large carnivores was conducted in a representative sample of the Norwegian population (n = 3134). People were asked about the acceptability of carnivores living in remote wilderness, close to where people live, killing livestock, killing pets, or threatening humans. Large differences in acceptability appeared across the five situations. Wolves and bears were less acceptable than lynx and wolverines when observed close to where people live. Negative associations were found between acceptability and lack of personal control, economic loss, and respondents' age. Acceptability was higher among males than among females, and higher among urban than among rural residents. The results showed that general measures of attitudes alone toward large carnivores were of limited value in wildlife management. The situational and social specificity of these attitudes should be given more attention.
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Richard H. Lamprey & Robin S. Reid,
2004.
Expansion of human settlement in Kenya's Maasai Mara: what future for pastoralism and wildlife?
Journal of Biogeography, 31(6): 997-1032.
Aim Wildlife and pastoral peoples have lived side-by-side in the Mara ecosystem of south-western Kenya for at least 2000 years. Recent changes in human population and landuse are jeopardizing this co-existence. The aim of the study is to determine the viability of pastoralism and wildlife conservation in Maasai ranches around the Maasai Mara National Reserve (MMNR). Location A study area of 2250 km2 was selected in the northern part of the Serengeti-Mara ecosystem, encompassing group ranches adjoining the MMNR. Emphasis is placed on Koyake Group Ranch, a rangeland area owned by Maasai pastoralists, and one of Kenya's major wildlife tourism areas. Methods Maasai settlement patterns, vegetation, livestock numbers and wildlife numbers were analysed over a 50-year period. Settlement distributions and vegetation changes were determined from aerial photography and aerial surveys of 1950, 1961, 1967, 1974, 1983 and 1999. Livestock and wildlife numbers were determined from re-analysis of systematic reconnaissance flights conducted by the Kenya Government from 1977 to 2000, and from ground counts in 2002. Corroborating data on livestock numbers were obtained from aerial photography of Maasai settlements in 2001. Trends in livestock were related to rainfall, and to vegetation production as indicated by the seasonal Normalized Difference Vegetation Index. With these data sets, per capita livestock holdings were determined for the period 1980-2000, a period of fluctuating rainfall and primary production. Results For the first half of the twentieth century, the Mara was infested with tsetse-flies, and the Maasai were confined to the Lemek Valley area to the north of the MMNR. During the early 1960s, active tsetse-control measures by both government and the Maasai led to the destruction of woodlands across the Mara and the retreat of tsetse flies. The Maasai were then able to expand their settlement area south towards MMNR. Meanwhile, wildebeest (Connochaetes taurinus) from the increasing Serengeti population began to spill into the Mara rangelands each dry season, leading to direct competition between livestock and wildlife. Group ranches were established in the area in 1970 to formalize land tenure for the Maasai. By the late 1980s, with rapid population growth, new settlement areas had been established at Talek and other parts adjacent to the MMNR. Over the period 1983-99, the number of Maasai bomas in Koyake has increased at 6.4% per annum (pa), and the human population at 4.4% pa. Over the same period, cattle numbers on Koyake varied from 20,000 to 45,000 (average 25,000), in relation to total rainfall received over the previous 2 years. The rangelands of the Mara cannot support a greater cattle population under current pastoral practices. Conclusions With the rapid increase in human settlement in the Mara, and with imminent land privatization, it is probable that wildlife populations on Koyake will decline significantly in the next 3-5 years. Per capita livestock holdings on the ranch have now fallen to three livestock units/reference adult, well below minimum pastoral subsistence requirements. During the 1980s and 90s the Maasai diversified their livelihoods to generate revenues from tourism, small-scale agriculture and land-leases for mechanized cultivation. However, there is a massive imbalance in tourism incomes in favour of a small elite. In 1999 the membership of Koyake voted to subdivide the ranch into individual holdings. In 2003 the subdivision survey allocated plots of 60 ha average size to 1020 ranch members. This land privatization may result in increased cultivation and fencing, the exclusion of wildlife, and the decline of tourism as a revenue generator. This unique pastoral/wildlife system will shortly be lost unless land holdings can be managed to maintain the free movement of livestock and wildlife.
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Nina Fascione, Aimee Delach , Martin E. Smith,
2004.
People and Predators: From Conflict to Coexistence
Island Press, available in October 2004.
Carnivores provide innumerable ecological benefits and play a unique role in preserving and maintaining ecosystem services and function, but at the same time they can create serious problems for human populations. A key question for conservation biologists and wildlife managers is how to manage the world's carnivore populations to conserve this important natural resource while mitigating harmful impacts on humans.
In People and Predators, leading scientists and researchers offer case studies of human-carnivore conflicts in a variety of landscapes, including rural, urban, and political. The book covers a diverse range of taxa, geographic regions, and conflict scenarios, with each chapter dealing with a specific facet of human-carnivore interactions and offering practical, concrete approaches to resolving the conflict under consideration. Chapters provide background on particular problems and describe how challenges have been met or what research or tools are still needed to resolve the conflicts.
People and Predators will helps readers to better understand issues of carnivore conservation in the 21st century, and provides practical tools for resolving many of the problems that stand between us and a future in which carnivores fulfill their historic ecological roles.
The book can be
ordered at Island
Press
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Rolf
D. Baldus (Ed.), 2004
Lion Conservation in Tanzania Leads to
Serious Human – Lion Conflicts
with a Case Study of a Man-Eating Lion Killing 35 People
GTZ Wildlife Programme in Tanzania, Wildlife Divisioin, Dar Es Salaam
Executive Summary
Tanzania has the largest lion populations on the continent, and they are
not threatened with extinction. The
population is stable in nearly all protected areas.
It is of significant size and mostly stable outside these
protected areas. Exact data is lacking, but the lion-population has most
probably been reduced during the last decades in areas with high
population growth, expansion of agriculture and livestock husbandry and
in some areas in North–western Tanzania where an influx of refugees
has occurred.
Although the lion range has been reduced in Tanzania in the last 50
years due to human population growth and agricultural expansion, lions
benefit from a widespread network of protected areas (30 % of the
country) and from vast tracts of unpopulated and populated lands with
relatively undisturbed habitats suitable for lions.
Lions are protected throughout the country, and it is the policy of the
Government to conserve them both inside and outside of the protected
areas, as they are part of biodiversity.
Some problem-animal control in extreme cases of human–lion
conflict occurs, and approximately 250 lions are shot per year by
tourist hunters, which is overall a sustainable yield.
Empirical evidence from the Selous Game Reserve shows that
off-take levels are sustainable. Lions play a major role in the hunting industry, which is
economically significant and greatly contributes to paying the
conservation bill. As a consequence of the Wildlife Policy of Tanzania
(1998) Wildlife Management Areas (WMA) are being created where villages
manage the wildlife on their land and are increasingly earning revenues,
to which controlled lion hunting will contribute.
This will raise tolerance levels towards wildlife including
dangerous game and it will improve the possibilities for wildlife as a
land use option, thereby safeguarding areas which otherwise would be
lost for wildlife.
As a consequence of this relatively good conservation record, in
particular when compared to many other countries, lions are a major
source of conflicts with the human population.
We estimate that around 200 people are killed in Tanzania every
year by dangerous animals, of which around one third on an average could
be by lions. Lion inflicted
injuries and loss of life have been and still are more acute in Southern
Tanzania. The paper
presents details of one recent case where not less than 35 people were
killed by one or several man-eating lions in an area of 350 km² just
150 km south–west of Dar es Salaam between the Rufiji River and the
Selous Game Reserve within 20 months. It is one of the biggest
individual cases of man-eating by one or two lions ever recorded and
with the information presented here it is at the same time one of the
best documented cases, at least in Tanzania. Further analysis might help
to understand the underlying causes better and thereby assist in
devising strategies to protect humans better without eradicating the
lions.
The reasons which have led to such a tremendous loss of lions in Kenya
or in West-Africa are not connected to international trade. To upgrade
the lion to CITES Appendix I as proposed by Kenya would not address any
of the issues that adversely affect lion populations, i.e. loss of
habitat to agriculture, problem animal control, poaching and killing of
lions by pastoralists. It would
however, make the hunting of lions more difficult or even impossible.
This hunting is sustainable and giving value to lions is one
major element in the range of conservation tools which Tanzania has
successfully applied to protect the future of the lion.
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Kleiven,
J., T. Bjerke & B.P. Kaltenborn, 2004.
Factors influencing the social acceptability of large carnivore behaviours.
Biodiversity and Conservation, 9: 1647-1658. Abstract
A survey on attitudes toward large carnivores was conducted in a representative sample of the Norwegian population (n = 3134). People were asked about the acceptability of carnivores living in remote wilderness, close to where people live, killing livestock, killing pets, or threatening humans. Large differences in acceptability appeared across the five situations. Wolves and bears were less acceptable than lynx and wolverines when observed close to where people live. Negative associations were found between acceptability and lack of personal control, economic loss, and respondents' age. Acceptability was higher among males than among females, and higher among urban than among rural residents. The results showed that general measures of attitudes alone toward large carnivores were of limited value in wildlife management. The situational and social specificity of these attitudes should be given more
attention. Back
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Berger, K., 2004.
Carnivore-Livestock Conflicts: Making Economic Sense Of Subsidized Predator Control
2004 Society for Conservation Biology 18th Annual Meeting,
2004.
Abstract Despite the ecological importance of
carnivores in terrestrial ecosystems, predators have been persecuted
worldwide, largely due to conflicts with humans over livestock. Control
efforts have been phenomenally successful in terms of the number of
carnivores removed; today most species of large carnivore are in global
decline. Less well understood, however, are the effects of predator
control programs on the viability of the industries they seek to
protect. For instance, if predation losses are a primary factor
influencing the economic viability of the U.S. sheep industry, and if
predator control effectively reduces these losses, then a positive
relationship should exist between control efforts and sheep numbers. I
tested this prediction with a 60-year data set using multiple
regression and hierarchical partitioning to explore potential
associations between changes in sheep numbers and factors such as
control expenditures, market prices and production costs. Although
control efforts were positively correlated with fluctuations in sheep
numbers, changes in production costs and market prices explained nearly
all (87%) of the model variation between 1939 and 1999. These results
suggest that alternative support mechanisms need to be developed if the
goal is to maintain a viable livestock industry and not simply to kill
carnivores.
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TREVES ADRIAN AND K. ULLAS KARANTH, 2003.
Human-Carnivore Conflict and Perspectives on Carnivore Management Worldwide.
Conservation Biology 17: 1491-1499.
Abstract
Carnivore conservation depends on the sociopolitical landscape as much as the biological landscape. Changing political attitudes and views of nature have shifted the goals of carnivore management from those based on fear and narrow economic interests to those based on a better understanding of ecosystem function and adaptive management. In parallel, aesthetic and scientific arguments against lethal control techniques are encouraging the development of nonlethal approaches to carnivore management. We anticipate greater success in modifying the manner and frequency with which the activities of humans and domestic animals intersect with those of carnivores. Success should permit carnivore populations to persist for decades despite human population growth and modification of
habitat.
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Madhusudan, M. D.,
2003.
Living amidst large wildlife: Livestock and crop depredation by large mammals in the interior villages of Bhadra Tiger Reserve, south India
Environmental Management 31: 466-475.
Abstract
Conflict with humans over livestock and crops seriously undermines the conservation prospects of India's large and potentially dangerous mammals such as the tiger (Panthera tigris) and elephant (Elephas maximus). This study, carried out in Bhadra Tiger Reserve in south India, estimates the extent of material and monetary loss incurred by resident villagers between 1996 and 1999 in conflicts with large felines and elephants, describes the spatiotemporal patterns of animal damage, and evaluates the success of compensation schemes that have formed the mainstay of loss-alleviation measures. Annually each household lost an estimated 12% (0.9 head) of their total holding to large felines, and approximately 11% of their annual grain production (0.82 tonnes per family) to elephants. Compensations awarded offset only 5% of the livestock loss and 14% of crop losses and were accompanied by protracted delays in the processing of claims. Although the compensation scheme has largely failed to achieve its objective of alleviating loss, its implementation requires urgent improvement if reprisal against large wild mammals is to be minimized. Furthermore, innovative schemes of livestock and crop insurance need to be tested as alternatives to
compensations.
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Conforti, V.A.&
F.C.C. de Azevedo. 2003.
Local perceptions of jaguars (Panthera onca) and pumas (Puma concolor) in the Iguacu National Park area, south
Brazil.
Biological Conservation 111: 215-221.
Abstract
Jaguars (Panthera onca) have been killed by local residents within the boundaries and lands surrounding Iguaqu National Park (INP), Brazil. Both jaguars and pumas (Puma concolor) occur in the region, however, livestock predation by pumas has rarely been reported. Our objective was to assess the local perceptions about jaguars and pumas. We identified two major factors that distinguished the perceptions towards the two species: less people feared the puma than the jaguar; and most people believed that jaguars, but not pumas, were released into INP by local authorities. Interestingly, despite those major differences in these perceptions, feelings towards the two species tended to be the same. Perceptions towards jaguars were not influenced by the predation history of the properties, suggesting that the predation impact was not remarkable enough to influence local perceptions towards carnivores. This is apparently the first study on local perceptions towards large carnivores in Brazil.
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Marker, L. L., M.G.L.
Mills & D.W. Macdonald 2003.
Factors influencing perceptions of conflict and tolerance toward cheetahs on Namibian
farmlands.
Conservation Biology 17:1290-1298.
Abstract
Namibia has the largest remaining population of free-ranging cheetahs (Acinonyx jubatus) in the world, 90% of which are found outside protected areas on commercial farms. We conducted a baseline survey of Namibian farmers between 1991 and 1993, with a yearly follow-up thereafter until 1999, to quantify the perceptions of farmers toward cheetahs. Specifically, we sought to identify factors that cause cheetahs to be perceived as pests and management practices that mitigate this perception. The baseline survey revealed that farmers who regarded cheetahs as problems removed an average of 29 cheetahs annually, whereas those who did not consider them problematic removed a mean of 14 annually. These figures dropped significantly to 3.5 and 2.0 cheetahs per year after the introduction of educational materials. The perception that cheetahs are pests was significantly associated with game farms, and the presence of "play trees" on farms emerged as a significant corollary of both negative perceptions and removals of cheetahs. Between 1991 and 1999, the mean annual number of cheetah removals significantly decreased from 19 to 2.1. Late in the study, cheetah killing was more closely correlated with perceived problems than in the early years of the study. These findings suggest that although cheetahs are still perceived as a problem, farmers' tolerance toward cheetahs has increased. Management strategies and economic incentives that promote cheetah conservation, such as the formation of conservancies, development of ecotourism, and marketing of "predator-friendly" meat, are essential for conserving cheetahs outside protected
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Compensation
and Insurance
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MISHRA
CHARUDUTT , PRISCILLA ALLEN, TOM McCARTHY, M. D. MADHUSUDAN, AGVAANTSERENGIIN
BAYARJARGAL AND HERBERT H. T. PRINS, 2003.
The Role of Incentive Programs in Conserving the Snow Leopard.
Conservation Biology 17: 1512-1520. Abstract
Pastoralists and their livestock share much of the habitat of the snow leopard (Uncia uncia) across south and central Asia. The levels of livestock predation by the snow leopard and other carnivores are high, and retaliatory killing by the herders is a direct threat to carnivore populations. Depletion of wild prey by poaching and competition from livestock also poses an indirect threat to the region's carnivores. Conservationists working in these underdeveloped areas that face serious economic damage from livestock losses have turned to incentive programs to motivate local communities to protect carnivores. We describe a pilot incentive program in India that aims to offset losses due to livestock predation and to enhance wild prey density by creating livestock-free areas on common land. We also describe how income generation from handicrafts in Mongolia is helping curtail poaching and retaliatory killing of snow leopards. However, initiatives to offset the costs of living with carnivores and to make conservation beneficial to affected people have thus far been small, isolated, and heavily subsidized. Making these initiatives more comprehensive, expanding their coverage, and internalizing their costs are future challenges for the conservation of large carnivores such as the snow
leopard. Back
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NAUGHTON-TREVES LISA, REBECCA GROSSBERG§ AND ADRIAN
TREVES, 2003.
Paying for Tolerance: Rural Citizens' Attitudes toward Wolf Depredation and Compensation.
Conservation Biology 17:1500-1511.
Abstract
As wolf (Canis lupus) populations recover in Wisconsin (U.S.A.), their depredations on livestock, pets, and hunting dogs have increased. We used a mail-back survey to assess the tolerance of 535 rural citizens of wolves and their preferences regarding the management of "problem" wolves. Specifically, we tested whether people who had lost domestic animals to wolves or other predators were less tolerant of wolves than neighboring residents who had not and whether compensation payments improved tolerance of wolves. We assessed tolerance via proxy measures related to an individual's preferred wolf population size for Wisconsin and the likelihood she or he would shoot a wolf. We also measured individuals' approval of lethal control and other wolf-management tactics under five conflict scenarios. Multivariate analysis revealed that the strongest predictor of tolerance was social group. Bear (Ursus americanus) hunters were concerned about losing valuable hounds to wolves and were more likely to approve of lethal control and reducing the wolf population than were livestock producers, who were more concerned than general residents. To a lesser degree, education level, experience of loss, and gender were also significant. Livestock producers and bear hunters who had been compensated for their losses to wolves were not more tolerant than their counterparts who alleged a loss but received no compensation. Yet all respondents approved of compensation payments as a management strategy. Our results indicate that deep-rooted social identity and occupation are more powerful predictors of tolerance of wolves than individual encounters with these large
carnivores.
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Predation on
Livestock & Attacks on Humans
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Repeated wild boar
depredation on adult sheep (in French)
Cas répétés de prédation de sangliers sur des ovins adultes
Please find the information on the website of the ONCFS
(Office Nationale de la Chasse et de la Faune Sauvage)
and download
at: http://www.oncfs.gouv.fr/events/point_faune/suivi-sanitaire/sangliers_ovins.pdf
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Huygens,
O.C., F.T. van Manen , D.A. Martorello, H. Hayashi and J. Ishida. 2004.
Relationships between Asiatic black bear kills and depredation costs in
Nagano Prefecture, Japan. Ursus 15(2):197–202.
Over
1,000 Asiatic black bears (Ursus thibetanus) are killed each year in
Japan to control depredation activity. Our objective was to determine if
killing bears reduces depredation costs. We focused our study on Nagano
Prefecture, where 2,562 nuisance bears were reported killed and where
reported depredation cost exceeded ¥1,430 million between 1979 and
1999. We used mixed models with repeated measures to determine if annual
depredation costs were associated with the number of bears killed. Our
dataset included 15 years (1985–99) of kill and cost data for 122
municipal jurisdictions within 10 regions. We performed analyses at the
regional level based on combined harvest and nuisance kill data, and at
the municipal level based only on nuisance kill data. We classified the
number of kills into 3 classes (low, medium, high). Analyses were
repeated using prior-year kills to examine whether a possible time-lag
existed. Annual depredation costs were positively associated with the
kill data at the regional level (F = 5.51; 2, 72.3 df; P = 0.006) during
the same year. However, we observed no association based on prior-year
kill data (F = 0.96; 2, 65.1; P = 0.390), suggesting that depredation
costs and bear kills are a function of nuisance bear numbers rather than
reflecting a causal relationship between the 2 measures. Nuisance bear
numbers may in turn be affected either by the availability of natural
foods or by general population trends. At the municipal level,
depredation costs were not associated with the number of nuisance bears
killed during the same year (F = 1.36; 2, 466 df; P = 0.258) or the
prior year (F = 0.42; 2, 459 df; P = 0.656). Our results suggest that
systematically killing Asiatic bears may not be an effective tool for
mitigating nuisance costs. In municipalities where nuisance costs remain
high, we recommend that alternative methods be tested for their efficacy
in mitigating costs. Such methods may include public education, changing
or removing financial incentives to kill bears, changing crop rotations
to crops that are not attractive to bears in risk areas, promoting
natural food production, using electric fences, and applying aversive
conditioning techniques.
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Kvam,
T., K. M. Rosendal, E.M. Rosvold, A. Aune, S.M. Rosendal, K. Brøndbo,
P.F. Moa. (2004).
Sheep mortality in an area close to a major city 2002-2003.
Nord-Trøndelag University College HINT Utredning 55: 1-57. (In
Norwegian)
Summer
mortality of free-grazing lambs in two forested grazing areas west of
the Norwegian capital Oslo had increased dramatically from 3-6% to
11-17% between 1997 and 2001. To identify causes of mortality lambs were
equipped with radio-transmitters in 2002 (n=317) and 2003 (n=299). All
of the other lambs in the flocks were equipped with "dummy"
transmitters. Mortality among the radio-collared lambs was 18% in 2002
and 12% in 2003. Lynx were responsible for 65% and 24% of mortality in
these radio-collared lambs in 2002 and 2003, respectively. Other causes
of mortality included disease, drowning, red fox predation and problems
with insect larvae.
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Jethva B.D. & Y.V. Jhala, 2004.
Foraging ecology, economics and
conservation of Indian wolves in the Bhal
region of Gujarat, Western India.
Biological Conservation, 116: 351-357.
Abstract
We
determined the food habits of the endangered Indian wolf Canis lupus
pallipes in the Bhal region of Gujarat, western India by analyzing 1246
wolf scats from five packs by estimating prey availability and by
monitoring radio-tagged wolves from three packs for 1994 hour. The
frequency of occurrence of blackbuck Antelope cervicapra remains in
scats was 55.5%, followed by cattle (25.7%), nilgai Boselaphus
tragocamelus (6.3%); and as others (<5%). The frequency of food items
in scats of different wolf packs reflected their relative availability.
For cattle the distinction between scavenging and predation was only
possible through continuous monitoring. The average feeding interval
obtained from monitoring was 3.6[plus or minus] 0.7 (S.E.) days and the
average consumption/wolf/day was 1.8[plus or minus] 0.3 (S.E.) Kg. Adult
male blackbuck formed most (70%) of the biomass consumed by wolves
whereas cattle carcasses and cattle actually killed by wolves
contributed 14 and 8%, respectively. Predation on cattle therefore was
low and translated in an estimated loss of Rs. 821 (US$ 17) per village
per annum. We propose that landscapes such as the Bhal with high wolf
densities, high natural prey availability and consequently low
human-wolf conflict levels should be prioritized as prime sites for wolf
conservation efforts.
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Capitani,
C., I. Bertelli, P. Varuzza , M. Scandura & M. Apollonio,
2004.
A comparative analysis of wolf (Canis lupus) diet in three different Italian ecosystems.
Mammalian Biology 69: 1-10. Abstract
To verify food habit flexibility of wolf populations under different ecological conditions, scats collected year round were analysed in three study areas and diet composition of resident packs was compared. The three study areas, representing Alpine (SV), Apennine (PM) and Mediterranean (CV) ecosystems, are rich in wild ungulates, which differ in number of species and relative abundance; livestock is also present. Wild ungulates were the main source of food, accounting for 89.4%–95.1% of the diet. Livestock, instead, scarsely reached 8% of annual mean percent volume in any one area, and only in the Alps did they play a major role in autumn. Other food items constituted less than 5% of annual mean percent volume. Variations in the proportions of use of wild ungulate categories were observed among the study areas, although some patterns of intraspecific selection emerged in each area. Finally, differences both in the relationships between utilisation and availability of preys, and in trophic niche breadth were discussed in relation to environmental features and colonization patterns. Back
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Athreya, V.R.; Thakur, S.S.; Chaudhuri, S.; and Belsare A.V. 2004.
A study of the man-leopard conflict in the Junnar Forest Division, Pune District, Maharashtra.
Submitted to the Office of the Chief Wildlife Warden, Nagpur. Maharashtra Forest Department. The western Indian state of Maharashtra, with a population of around 500 leopards (Panthera pardus fusca), has in recent times seen an escalation in man – leopard conflicts. This very detailed study measures the degree of conflict, looks at spatial and temporal patterns in conflict intensity –including two regions that differ in topological and socio-economic factors- and provides recommendations for dealing with problem leopards.
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Patterson, B.D., S. M. Kasiki, E. Selempo and R.W.
Kays, 2004.
Livestock predation by lions (Panthera leo) and other carnivores on ranches neighboring Tsavo National Parks, Kenya.
Biological Conservation 119: 507-516. Abstract
Lion conflicts with humans stemming from their depredations on livestock are largely responsible for their catastrophic decline, from 200,000 to 22,600 (90%) in only 20 years. Understanding patterns associated with such predation can be used to mitigate its effects and promote continued coexistence of lions and human. We analyzed attacks on livestock over a four-year period on two arid-land ranches neighboring Tsavo East National Park, Kenya. A total of 312 attacks claiming 433 head of stock were examined. Lions were responsible for 85.9% of the attacks; spotted hyenas and cheetahs were the other predators responsible. Lions and hyenas attacked mainly cattle and did so at night, whereas cheetahs almost exclusively took smaller sheep and goats. There was no temporal autocorrelation of daily losses, suggesting that the attacks are independent events. Both number of attacks and number of stock killed showed significant seasonal differences, and their monthly totals correlated positively with precipitation. Intensified predation in the wet season differs from patterns of lion predation elsewhere but reinforces the pattern that large carnivores take more livestock when native prey are most difficult to find and kill. On average, wildlife attacks claimed 2.4% of range stock annually, and livestock represented ca 5.8% of the diet of ranch lions. This predation represented 2.6% of the herd's estimated economic value, and cost the ranches $8,749 per annum. Each lion cost ranchers approximately $290 per year in depredations.
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Sidorovich Vadim E. Sidorovich, Larisa L. Tikhomirova & Bogumila Jedrzejewska,
2003.
Wolf Canis lupus numbers, diet and damage to livestock in relation to hunting and ungulate abundance in northeastern Belarus during 1990-2000.
Wildlife Biology 9: 103-111.
Abstract
Wolf Canis lupus relationships with wild ungulates, domestic animals and humans were studied in an area of ca 800 km2 at the head of the Lovat River in northeastern Belarus during 1990-2000. The region was dominated by natural habitats (78%) consisting mainly of forests and bogs, but also lakes and rivers. The abundance of wild ungulates, such as moose Alces alces, wild boar Sus scrofa, and roe deer Capreolus capreolus, as censused by snow tracking and assessed by game wardens, declined 5 to 6-fold between 1990 and 1996, most probably due to uncontrolled exploitation and poaching. During 1997-2000, the numbers of ungulates began to recover. Wolves responded to the shortage of wild ungulates by a strong shift in feeding habits. When wild ungulates were numerous, wolf diet as studied by scat analysis was composed of wild ungulates (80-88% of consumed biomass), with small additions of medium- and smallsized wild animals (7-13%), mainly beaver Castor fiber and hare Lepus sp., and domestic animals (4-6%), mainly cattle. In the years when the recorded numbers of wild ungulates were at their lowest, wolves preyed on domestic animals (38% of biomass consumed), wild ungulates (32%), and medium- and smallsized wild prey (29%). Wolf damage to domestic animals (28 head of cattle and 247 dogs killed) and wolf-human interaction (100 observations of wolves in and near villages, including one attack by a rabid wolf on 11 people) were recorded in 14 villages. The rate of wolf predation on domestic animals and their appearances in villages increased exponentially with the declining biomass of wild ungulates and ceased again when wild ungulates began to recover; a one-year time lag in wolf response to changes in ungulate abundance was observed. The numbers of wolves as estimated by snow tracking and assessed by game wardens played a weaker role in shaping wolf-livestock and wolf-human interaction. The wolf population was strongly affected by hunting during the study. Wolves responded numerically with a 1 to 2-year time lag to the varying intensity of harvest by humans. Our study showed the role of the human factor in shaping wolf numbers and wolf-livestock interaction in eastern Europe. The three major components of this relationship were: 1) the manifold decline in wild ungulate abundance, which was most probably caused by uncontrolled exploitation by humans in the years of political transformation and economic regress, made wolves shift to predation on domestic animals; inevitably, wolves were frequently seen in the rural areas; 2) people interpreted the growing rates of wolf damage and appearances near the settlements as an effect of greatly increasing numbers of wolves, and demanded that authorities and hunters fight the 'wolf plague'; 3) hunting impact on wolves increased and led to a marked reduction in wolf numbers and a decline in wolf-human conflicts. This scenario was most probably repeated in many areas of eastern Europe during 1990-2000, which was a decade of political and economical transformation. From a management perspective, we suggested that predation levels and wolf-human conflicts could be reduced not only by increased wolf harvest but also by enhancing the density and diversity of wild
ungulates.
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Polisar J., I. Maxit, D. Scognamillo, L. Farrell,
M.E. Sunquist & J.F. Eisenberg, 2003.
Jaguars, pumas, their prey base, and cattle ranching: ecological interpretations of a management problem.
Biological Conservation 109: 297-310. |
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Moberly, R.L., C.L.P.
White, C.C. Webbon, P.J. Baker and S. Harris. 2003.
Factors associated with fox (Vulpes vulpes) predation of lambs in
Britain.
Wildlife Research 30:219–227.
Red foxes (Vulpes vulpes)
are believed to have an economic impact on farming through predation on
lambs, poultry and game. Investigation of the causes behind variation in
the impact of predation between farms is required to improve management
of these problems. A questionnaire survey of sheep farmers was combined
with field data on relative fox population abundance to investigate some
of the factors associated with both the occurrence and scale of
perceived fox predation in Britain. Reported lamb losses to foxes were
generally low but there was a large range in perceived levels of
predation, from 0.0008 to 0.26 lambs per ewe, with 59% of respondents
reporting that they had lost at least one lamb to a fox at their most
recent lambing. Flock size was an important factor determining perceived
fox predation. Fox predation was more likely to have occurred on larger
farms, but, when it did, fewer lambs were perceived lost per ewe.
Various other non-management characteristics, including regional
location, had an influence on fox predation. Fox abundance was
positively associated with perceived predation. Indoor lambing was an
important preventive measure against fox predation. However, the effect
of fox control on livestock predation was difficult to determine because
of potential reactive behaviour by farmers to lamb losses. The analyses
indicate that multivariate rather than univariate techniques should be
used in the assessment of predator impacts and in making management
recommendations. The identification of farm characteristics associated
with fox predation, such as location and indoor lambing, enables the
potential identification of problem farms where preventive management
should be targeted.
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Models
Applied to Conflict Resolution
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TREVES
ADRIAN, LISA NAUGHTON-TREVES, ELIZABETH K. HARPER, DAVID J. MLADENOFF, ROBERT A. ROSE, THEODORE A.
SICKLEY, AND ADRIAN P. WYDEVEN, 2004.
Predicting Human-Carnivore Conflict: a Spatial Model Derived from 25 Years of Data on Wolf Predation on Livestock.
Conservation Biology 18, 114-125. Abstract
Many carnivore populations escaped extinction during the twentieth century as a result of legal
protections, habitat restoration, and changes in public attitudes.
However, encounters between carnivores, livestock, and humans are increasing in some
areas, raising concerns about the costs of carnivore conservation. We present a method to predict sites of human-carnivore conflicts
regionally, using as an example the mixed forest-agriculture landscapes of Wisconsin and Minnesota
(U.S.A.). We used a matched-pair analysis of 17 landscape variables in a geographic information system to discriminate affected areas from unaffected areas at two spatial scales
(townships and farms). Wolves (Canis lupus) selectively preyed on livestock in townships with high proportions of pasture and high densities of deer
(Odocoileus virginianus) combined with low proportions of crop lands, coniferous
forest, herbaceous wetlands, and open water. These variables plus road density and farm size also appeared to predict risk for individual farms when we considered Minnesota
alone. In Wisconsin only, farm size, crop lands, and road density were associated with the risk of wolf attack on
livestock. At the level of townships, we generated two state-wide maps to predict the extent and location of future predation on
livestock. Our approach can be applied wherever spatial data are available on sites of conflict between wildlife and
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Application
of Prevention Measures
and
Guarding Animal
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Orysia Dawydiak & David Sims, 2004. 2nd
Edition
Livestock Protection Dogs, Selection,
Care and Training
ISBN: 1-57779-062-6, Softcover,
illustrated, $24.95
Includes:
• What a livestock protection dog can do
• Selecting a puppy
• Caring for your dog
• Behavioral problems and solutions
• Preparations for a family companion
• Guarding unusual stock
• Plus much more!!!
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SHIVIK JOHN A., ADRIAN TREVES, AND PEGGY CALLAHAN, 2003.
Nonlethal Techniques for Managing Predation: Primary and Secondary
Repellents. Conservation Biology 17, Page 1531-1537.
Abstract
Conservation biology requires the development of practical tools and techniques to minimize conflicts arising from human modification of ecosystems. We applied behavioral theory of primary and secondary repellents to predator management by using aversive stimulus devices (electronic training collars) and disruptive stimulus devices (behavior-contingent audio and visual repellents) in a multipredator (Canis lupus, Haliaeetus leucocephalus, Ursus spp.) study in the United States. We examined fladry and a newly developed disruptive stimulus device contingent upon behavior on six wolf territories in Wisconsin, (U.S.A.) and determined that the disruptive stimulus device gave the greatest degree of protection from predation. We also compared the efficacy of a primary repellent (disruptive stimulus device) versus a secondary repellent (electronic training collars) to keep captive wolves from consuming a food source. Disruptive stimulus devices effectively prevented captive wolves from consuming the food resource, but did not produce an aversion to that food resource. With training collars, logistical and behavioral variability limited our ability to condition wolves. Our studies highlight the complexity of application of nonlethal techniques in real-world situations.
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MORDECAI O. OGADA, ROSIE
WOODROFFE, NICHOLAS O. OGUGE, AND LAURENCE G. FRANK, 2003.
Limiting Depredation by African Carnivores: the Role of Livestock
Husbandry.
Conservation Biology 17: 1521-1530.
Abstract
Most large carnivore species are in global decline. Conflict with local people, particularly over depredation on
livestock, is a major cause of this decline, affecting both nominally protected populations and those outside protected
areas. For this reason, techniques that can resolve conflicts between large carnivores and livestock farmers may make important contributions to
conservation. We monitored rates of livestock depredation by lions ( Panthera
leo), leopards (Panthera pardus), cheetahs (Acinonyx jubatus), and spotted hyenas
(Crocuta crocuta), and retributive killing of these species by farmers in livestock-producing areas of Laikipia
District, Kenya. Farmers killed more lions, leopards, and spotted hyenas where these predators killed more
livestock. Livestock husbandry had a clear effect on rates of depredation and hence on the numbers of predators
killed. Cattle, sheep, and goats experienced the lowest predation rates when attentively herded by day and enclosed in traditional corrals
(bomas) by night. Construction of the boma, the presence of watchdogs, and high levels of human activity around the boma were all associated with lower losses to
predators. Although most of this work was carried out on commercial
ranches, local Maasai and Samburu pastoralists have practiced nearly identical forms of husbandry for
generations. Our study shows that traditional, low-tech husbandry approaches can make an important contribution to the conservation of large
carnivores.
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MUSIANI MARCO , CHARLES
MAMO, LUIGI BOITANI, CAROLYN CALLAGHAN, C. CORMACK
GATES, LIVIA MATTEI, ELISABETTA VISALBERGHI, STEWART BRECK AND GIULIA VOLPI,
2003.
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America.
Conservation Biology 17: 1538-1547.
Abstract
In Alberta, Canada (1982-2001), and in Idaho, Montana, and Wyoming, United States (1987-2001), wolves
(Canis lupus) killed various domestic animals, among which the major prey were sheep in the United States (68%,n =494) and cattle in Canada (95%;n =1633). Under recovery
programs, the wolf population increased in the United States, and depredation events increased
proportionately. In both countries, the number of domestic animals killed each year was correlated with the number of wolves killed by government authorities for depredation
management. We tested the ability of antiwolf barriers made of flags hanging from ropes to impede wolf access to food and
livestock. In 18 experiments, barriers prevented captive wolves(n =9)from accessing food for up to 28 hours and allowed daily separation of wolves to administer contraceptive pills to a female
wolf. Barriers prevented access by wild wolves to 100-m2 baited sites during two 60-day
tests. We also set barriers around three cattle pastures. In Alberta during two 60-day trials on 25-ha
pastures, wolves approached barriers on 23 occasions but did not cross
them, and no cattle were killed. Wolves killed cattle on neighboring ranches during the trials and before and after the trials on the tested
ranches. In Idaho four radiocollared wolves crossed barriers and killed cattle in a 400-ha ranch after 61 days of barrier
exposure. Our results suggest that antiwolf barriers are effective in deterring captive and wild wolves for >1 and >=60
days, respectively, and that wild wolves switch to alternative livestock when excluded from one herd of
livestock. Our depredation data indicate that protecting livestock from wolves reduces the necessity for killing
wolves. Barriers could play a role among the limited set of preventive measures available and offer a cost-effective mitigation tool for the problem of livestock depredation on a local
scale.
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BRECK, S. W., R. WILLIAMSON, C. NIEMEYER,
AND J. A. SHIVIK. 2002.
Non-lethal radio activated guard for deterring wolf depredation in
Idaho: summary and call for research.
Proceedings Vertebrate Pest Conference 20:223-226.
Abstract
With the reestablishement of wolves in the western United States,
managing adverse interactions between wolves and livestock is
re-emerging as an issue for resource managers. Lethal control of wolves
is often difficult to implement due to the constraints of the Endangered
Species Act, predator population goals, and public disfavour for lethal
control. In response to the need to manage wolf predation in a
non-lethal manner, we developed and tested a behavior contingent system
for disrupting predation events. The Avian Systems Model 9000
Frightening System, also called a Radio Activated Guard (RAG), is
activated by signals from nearby wolf radio collars. The strobe light,
tape player with 30 different recorded sound effects, and behaviorally
contingent activation are designed to minimize habituation to the
system. Based on studies in Idaho, we believe RAG boxes are effective
for protecting livestock in small pastures situations. Limitations of
the scare device include electronic complexity, area coverage, and price.
We continue to develop and test the limitations of their effective use
in ongoing experimental research.
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Rigg, R. 2001.
Livestock Guarding Dogs: Their Current Use World Wide.
IUCN/SSC Canid Specialist Group Occasional Paper No 1
Aims
This report aims to outline the basic concepts of using dogs to protect
livestock from predators, to describe some of the breeds involved, to
give brief advice on acquiring and raising dogs to be successful
livestock guardians and to provide some indication of how to solve
common problems. Its main purpose, however, is to compile a detailed
review of current practices in the use of livestock
guarding dogs throughout the world and to discuss these in relation to
livestock depredation by predators. The annexes list known users and
experts on livestock guarding dogs as well as sources of further
information available in the scientific literature and on the internet.
Target
audience
Wildlife managers, potential sponsors of livestock guarding dog and
human-wildlife conflict resolution
projects, researchers as well as livestock breeders.
Sources
The majority of material presented here was obtained from literature
searches of scientific journals along with presentations from the 2nd
International Wildlife Management Congress in Gödöllõ, Hungary from
the 28th June to 2nd July 1999 and the Beyond 2000: Realities of Global
Wolf Restoration symposium in Duluth, Minnesota from the 23rd to 26th
February 2000 as well as the author’s own experience of fieldwork in
Slovakia in 1996-2001 and a brief study visit to Romania and Bulgaria
from 9th to 24th August 2001. Consultations with various colleagues have
been held as opportunity has allowed. As a great deal of work with
livestock guarding dogs is not of a scientific nature, particularly
outside the USA, additional material available on the internet between
October 2000 and October 2001 has been included. For convenience,
website addresses for articles posted on the internet have been included
in the Annex II reference section and useful website
addresses have also been provided in the early sections of the report (references
to websites given within the body of text quote the year in which the
site was visited).
Limitations
Although the intention has been to provide case studies from as many
countries using livestock guarding dogs as possible, there was a
shortage of information among the sources reviewed for some regions,
particularly Asia and South and Central America, as well as some
European states. ¼. Remeta (pers. comm. 2001) described groups of
Caucasian Shepherd dogs being left for days at a time in sole charge of
large herds (thousands) of livestock in Dagestan, Black and Green (1985
citing Orbigny 1826) mentioned working dogs in Uruguay and Darwin (1845
in Coppinger et al 1985) also observed dogs socialised to and guarding
livestock in Banda Oriental; Arons (1980) mentioned and Coppinger et al
(1985) discussed livestock guarding dogs in Mexico, the early Southwest
US and South America. The latter authors also postulated reasons for the
demise of the Castillian mastiff. Landry (1999b) has briefly reviewed
observations from Bosnia, the Sharplanina region of Macedonia, Kosovo
and Albania as well as the Caucasus (Georgia); Coppinger and Coppinger
(1995) and Lorenz and Coppinger (1986) included captioned photographs of
Shar Planinetz in Yugoslavia; whilst husbandry practices associated with
livestock guarding dog use in these European countries do not seem to
diverge greatly, as far as the evidence suggests, from those described
for other European countries included in this report, practices in Latin
America and Asia may be quite different.
The
article can be downloaded on the Canide Specialist Website her
or
directly here
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