Society for Conservation Biology: 2002 Annual Meeting
Abstracts
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Society for Conservation Biology: 2002 Annual Meeting
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Society for Conservation Biology 16th Annual Meeting July 14-July 19 2002
co-hosted by DICE and the British Ecological Society
Abstracts for Symposium Ten
Human-carnivore conflict: local solutions
with global applications
Keynes Lecture Theatre 1
Wednesday 17th July: 13.30 - 17.30
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(BLOCK CAPITALS indicate the presenting author)
13.30 - 13.45
KARANTH, K. ULLAS. Wildlife Conservation Society (International Programs), Bronx,
New York 10460-1099, USA <karanth@blr.vsnl.net.in>.
HUMAN-CARNIVORE CONFLICT: STRATEGIES FOR MITIGATION AND PREVENTION
Carnivores readily come into conflict with humans because of their protein-rich diet,
high fecundity, predatory behavior and social organization patterns. Such conflicts
result in losses of human lives, livestock, fisheries or crops, thereby leading to
elimination of carnivores through retaliatory killings. Increasing population growth,
urbanization and economic development - in combination with sporadic successes in
conservation efforts – are now increasing the extent of interface between human populations
and those of wild carnivores. Conservationists must resolve the ensuing conflicts
in a context characterized by fragmented landscapes and changing cultures. They can
rely on two broad approaches: reacting to conflicts through mitigation measures or
preventing conflicts through spatial separation of humans and carnivores. Conflict
mitigation can occur through modification of human behavior towards carnivores as
a result of economic compensation, community education, cultural tolerance and innovative
crop and animal husbandry practices. Mitigation can also occur by forcing carnivores
to change their behaviors using physical barriers, repellents, guarding, or, by removing
or killing them. In addition, conflict prevention through voluntary, incentive-driven
relocation of people away from core conservation areas is also emerging as an increasingly
attractive future option for protecting viable populations of some wild carnivore
species.
13.45 - 14.00
Wydeven, Adrian P. and LISA C. NAUGHTON. Wisconsin Department of Natural Resources,
Box 220, Park Falls, WI 54552, USA. (AW), Department of Geography, University of
Wisconsin, Madison, WI 53706, USA, <naughton@geography.wisc.edu> (LN).
PUBLIC ATTITUDES TOWARD MANAGING PROBLEM WOLVES.
Compensation programs are intended to improve rural citizens' tolerance for large
carnivores. I surveyed tolerance for wolves among 533 livestock producers, bear hunters
and other citizens living in areas of Wisconsin recently colonized by wolves. While
there was general support for wolf recovery, most respondents wanted wolf numbers
capped or reduced. Bear hunters were the least tolerant of the surveyed groups. I
found no difference in tolerance for wolves between compensated and non-compensated
individuals. Rather, respondents‚ identity as a bear hunter or livestock producer
proved most predictive. Education, gender, and size of childhood community were also
significant predictors. The Wisconsin compensation program does not seem to improve
individual tolerance for large carnivores but may be critical to building broader
political support for wolf conservation. I also discuss public opinion of lethal
and non-lethal control methods.
14.00 - 14.15
ANDERSONE, ZANETE, John D.C. Linnell, and Henrik Brøseth. Kemeri National
Park, "Meza maja", Kemeri-Jurmala, LV-2012, Latvia, <zanete@kemeri.apollo.lv>
(ZA), Norwegian Institute for Nature Research, Tungasletta-2, 7485 Trondheim, Norway
(JDCL, HB).
INVOLVING BALTIC AND SCANDINAVIAN HUNTERS IN LARGE CARNIVORE RESEARCH AND MANAGEMENT
In northern and eastern Europe, large carnivores are conserved through harvest management
rather than protection. Species eradication campaigns are in the past in most of
the countries, and sustainable hunting has a positive effect on large carnivore conservation.
Because hunters are numerous (1.4% of the Latvian and 6% of the Norwegian populations)
and directly manage wildlife, conservationists should consider this interest group
and, if possible, involve them in conservation activities. Nordic countries have
long involved hunters in carnivore monitoring and research (snow-tracking, searching
for dens, etc.) and have established a system of carcass delivery to researchers.
Baltic countries have also recently started involving hunters in conservation work.
Since 1997, Latvian hunters have provided carcasses of hunted wolves and lynxes for
further examination, and collected genetic samples. They have also been involved
in a country-wide morphometrical study measuring harvested wolves according to a
specially designed questionnaire, obtaining data on about 500 individuals, which
would otherwise be impossible. Hunters are also involved in decision-making about
wildlife management. Hunters can be effectively recruited for research and management
of large carnivores, including collection of morphological data provided that measurements
to be taken are simple.
14.15 - 14.30
Woodroffe, Rosie and JOSHUA R. GINSBERG. Department of Wildlife, Fish & Conservation
Biology, University of California, One Shields Avenue, Davis, CA 95616, USA (RW),
Wildlife Conservation Society, 2300 Southern Bvd, Bronx, NY 10460-1099, USA <jginsberg@wcs.org>
(JRG).
HUMAN-WILDLIFE CONFLICT AS A CAUSE OF GLOBAL CARNIVORE DECLINE
Virtually all large carnivores are undergoing global decline, often despite legal
protection inside and outside reserves. Three empirical measures of vulnerability
to extinction – the area needed for a population to persist, extinction date relative
to sympatric species, and red book status – all indicate that wide-ranging carnivore
species are particularly extinction-prone. The available data suggest that ranging
widely leads to high mortality because it brings animals into contact – and, hence,
conflict – with people and human activity. The endangered African wild dog (Lycaon
pictus) follows this pattern precisely, having extremely large home ranges and being
threatened principally by conflict with people. However, new data suggest that wild
dogs may range preferentially in areas of comparatively high human density, potentially
accentuating conflict. This behaviour appears to be a response to the distribution
of lions, wild dogs’ principal natural enemy. This raises new challenges for the
conservation of wild dogs and other large carnivores suffering predation from still
larger competitors.
14.30 - 14.45
LINNELL, JOHN D. C., Philippe Stahl, J. M. Vandal John Odden, Pål F. Moa,
Ivar Herfindal, Reidar Andersen and Tor Kvam. Norwegian Institute for Nature Research,
Tungasletta 2, N-7485 Trondheim, Norway, <john.linnell@ninatrd.ninaniku.no>
(JL, JO), Office National de la Chasse et de la Faune Sauvage, Monfort, F-01 330
Birieux, France (PS), Nord-Trøndelag College, PO Box 145, N-7701 Steinkjer,
Norway (PM, TK), Department of Zoology, Norwegian University of Science and Technology,
N-7491 Trondheim, Norway (IH, RA).
LIVESTOCK HUSBANDRY AND PROBLEM INDIVIDUALS' STUDIES OF EURASIAN LYNX IN NORWAY AND
FRANCE
We studied the predation of radio-collared lynx (Lynx lynx) on domestic sheep in
Norway and France. In Norway, sheep are unguarded and dispersed throughout the forest.
Predation rates were high (ca. 20 sheep / 100 nights / lynx), all flocks experienced
predation annually, surplus killing was widespread, and adult males had consistently
higher predation rates on sheep than other classes of lynx. Male lynx move more and
therefore encounter more sheep, but also kill more sheep per encounter than do females.
We found no evidence for the existence of individuals that killed more sheep per
encounter. Sheep flocks in habitats favoured by lynx suffered higher losses. In France,
sheep graze on meadows dispersed throughout a forest landscape. Predation rates were
10% of those in Norway, <25% of flocks experienced predation annually, and some
individual lynx clearly killed more sheep than others. In both Norway and France,
sheep grazing in sites favoured by lynx suffered higher rates of predation, but lynx
did not select for sheep grazing areas in particular. It appears that sheep are unimportant
in lynx diet, sheep are usually killed simply because they are encountered, and husbandry
affects the development of problem individuals.
14.45 - 15.00
Discussion
15.30 - 15.45
OGADA, MORDECAI, Laurence G. Frank, Nicholas O. Oguge, and Rosie Woodroffe. Mpala
Research Centre, P.O. Box 555 Nanyuki, Kenya <mogada@mpala.org>
(MO), Museum of Vertebrate Zoology University of California, Berkeley CA 94720, USA
(LGF), Dept. of Zoology, Kenyatta University, P.O. Box 43844 Nairobi, Kenya (NOO),
Department of Wildlife, Fish and Conservation, University of California, Davis CA
95616, USA (RW).
LARGE CARNIVORE PREDATION ON LIVESTOCK VARIES WITH HUSBANDRY PRACTICES IN LAIKIPIA,
KENYA
Livestock predation is a serious challenge to the conservation of carnivores outside
protected areas in Kenya, and other parts of Africa. It also has an adverse impact
on livestock production, particularly in Laikipia District, Kenya, where ranches
lose up to US$ 12,600 annually. These losses are even more damaging to pastoralists
with small herds. This study examined how effectively various stockade designs and
management practices protected livestock from lions, leopards, and hyenas (both spotted
and striped). We found that predator species and predation style varied by the type
of livestock attacked, but that some stockades were particularly prone to attack
by all predators. High levels of human activity around stockades (measured as the
number of houses) were most effective in protecting cattle, sheep and goats from
attack. Traditional solid stockades were more effective than wire enclosures in protecting
livestock. We also investigated the effectiveness of two new designs. Effectiveness
of watchdogs varied greatly in different situations. We identified optimal designs
and management statistically and conclude that modification of livestock housing
and management can reduce depredation. This reduction would serve both the causes
of livestock production and wildlife conservation.
15.45 - 16.00
JHALA, YADVENDRADEV V. and Dinesh K. Sharma. Wildlife Institute of India, Dehradun
248001, India <jhalay@wii.gov.in>.
CAUSES OF WOLF ATTACK ON LIVESTOCK AND CHILDREN: IMPLICATIONS FOR INDIAN WOLF CONSERVATION
India’s endangered wolves primarily inhabit semi-arid agro-pastoral regions, in close
proximity to people. Conflicts with human interests include predation on livestock,
attacks on children, rabid wolf attacks, and damage to installations at an air base.
Data on predation, food habits, ranging patterns, and wolf mortality were collected
from four sites differing in wild prey abundance and species composition as well
as socio-economic conditions. Wolf predation affects the economic survival of some
pastoral communities. Herdsmen use guard dogs and thorn corrals, and keep stock in
villages each night to mitigate predation. In areas where wolves subsist on wild
prey wolf deaths were mostly natural, while in areas where wolves subsist on livestock,
most of the observed wolf mortality was caused by humans. Current levels of wolf
persecution, mostly limited to filling dens with smoke, are not likely to result
in local extinction. However, the increasing use of poison needs to be checked. In
Uttar-Pradesh in 1996, a wolf attacked 76 children (of which 50 were fatal). Our
study suggests that wolves pose a threat to children in areas with high human density
(> 600 per km2), high poverty, little wild prey, and livestock populations that
are heavily guarded.
16.00 - 16.15
MISHRA, CHARUDUTT and Tom McCarthy. International Snow Leopard Trust, 4649, Sunnyside
Avenue North, Suite 325, Seattle, Washington 98103, USA (CM, TMC), Centre for Ecological
Research and Conservation, Nature Conservation Foundation, 3076/5 4th Cross Gokulam
Park, Mysore 570002, Karnataka, India <charu@ncf-india.org> (CM).
THE ROLE OF INCENTIVE SCHEMES IN CONSERVING THE SNOW LEOPARD (UNCIA UNCIA)
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
out-competition by livestock also poses an indirect threat to the region’s carnivores.
Conservationists working in these underdeveloped areas that face serious economic
impacts from livestock losses have turned to incentive schemes to motivate local
communities to protect carnivores. We describe a pilot incentive experiment in India
that aims at enhancing wild prey density by creating livestock-free areas on common
land. We also describe how income generation from handicrafts and tourism in Mongolia
is helping to curtail poaching and retaliatory killing of snow leopards. However,
initiatives that have tried to offset the costs of living with carnivores and to
make conservation beneficial to the 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 conserving large
carnivores like the snow leopard.
16.15 - 16.30
SHIVIK, JOHN A. National Wildlife Research Center, 4101 LaPorte Avenue, Fort
Collins, Colorado 80521, USA, <John.Shivik@aphis.usda.gov>.
CONSERVATION BIOLOGY IN THE REAL WORLD: NON-LETHAL TECHNIQUES FOR MANAGING PREDATION
Conservation biology is not only a science of scarcity and diversity, but one of
interface between theory and practice. It requires the development of practical tools
and techniques to mitigate conflicts arising from human modification of ecosystems.
I have applied behavioral theory to predator management by using aversive stimulus
devices (electronic training collars) and disruptive stimulus devices (behavior-contingent
audio and visual repellents) in bear (Ursus spp.) and wolf (Canis lupus) conflict
situations in the United States. A program using aversive training collars and two
packs of wild wolves was not successful after nearly two years of effort, and I conclude
that temporarily holding wild wolves in captivity for aversive conditioning is unlikely
to be an effective predation management technique. Newly developed disruptive stimulus
devices, however, are a promising new management tool that have helped to encourage
public acceptance of wolf populations. No livestock were killed by wolves wearing
these devices (n=17) during 3 years of research in Idaho. Ongoing studies in Minnesota
and Wisconsin indicate the need to understand variation in technology and animal
behavior that may hinder the effectiveness and application of non-lethal management
techniques, and thus affect local support for conservation efforts.
16.30 - 16.45
Volpi, Giulia, Luigi Boitani, Carolyn Callaghan, Charles Mamo, Livia Mattei,
Elisabetta Visalberghi and MARCO MUSIANI. Department of Animal and Human Biology,
University of Rome, Rome, Italy (GV, LB), Central Rockies Wolf Project, Canmore,
Alberta, Canada (CC, CM), Ministry of Agriculture and Forestry, Pescara, Italy (LM),
National Research Council, Rome, Italy (EV) ,The University of Calgary, Faculty of
Environmental Design, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
<mmusiani@ucalgary.ca> (MM).
ANTI-WOLF BARRIERS TO MANAGE CAPTIVE AND WILD WOLVES AND PROTECT LIVESTOCK
Traditionally Russian hunters kill wolves at bottlenecks formed by flags hanging
from ropes. We tested such anti-wolf barriers to impede wolves’ access to food, livestock
and other wolves. We conducted 13 experiments in three enclosures containing six
European and two Siberian wolves. Barriers were used for increasing time periods
(45 min - 120 hours). In all cases, wolves did not cross the anti-wolf barrier. Barriers
also allowed daily separation of two wolves to administer a food/contraceptive pills
mixture to the female. In Canada, we set anti-wolf barriers around a 500 x 500 m
enclosure containing 100 cows. During the 60-day experiment, we detected 17 wolf
approaches to within 50 cm of the barriers, but no crossings and no killings. Instead,
wolves killed livestock in neighboring ranches as wel as before and after the experiment
in the tested ranch. Finally, anti-wolf barriers also impeded wild wolves’ access
to baited sites during two one-month tests. Our results suggest that anti-wolf barriers
are effective on captive and wild wolves for >5 and >60 days respectively,
and that wild wolves might switch to alternative food sources. Anti-wolf barriers
might offer a cost-effective solution to wolf predation on livestock and to exclude
wolves from human areas.
16.45 - 17.00
MERTENS, ANNETTE, Christoph Promberger, and Paul Gheorghe. Carpathian Large Carnivore
Project, Str. Dr. Ioan Senchea 612, 2223 Zarnesti, Romania, <annette@clcp.ro;
nuschka@usa.net>.
THE EFFECT OF DAMAGE PREVENTION METHODS ON LARGE CARNIVORE-LIVESTOCK CONFLICTS IN
ROMANIA
In Romania, 5,000 bears, 3,000 wolves and 2,000 lynx live on the same range with
4.5 million sheep and 1.5 million cattle. Livestock protection methods are still
very well preserved in this country: animals are not left free on pastures, they
are always penned over night, and always guarded by shepherds and dogs. We investigated
the amount of damage caused by large carnivores and to what extent this damage can
be reduced by the use of electric fences. Every grazing season (May to October) 1.5
% of all sheep are killed by wolves and bears, with an average of 7 animals per camp.
In three of the four years of our analysis the number of killed sheep was strongly
correlated with the relative amount of shepherds and of guard dogs in the flocks.
The camps where we installed electric fences suffered only 2.59 % of the damage suffered
by camps without fences. The fences are appreciated by the livestock raisers also
because they are very easy to handle and fast to be set up. Such a fence is still
an expensive item in Romania but it can be profitable for livestock camp organisers
over the long term.
17.00 - 17.15
TREVES, ADRIAN. Center for Applied Biodiversity Science, Conservation International,
1919 M Street, NW, Suite 600, Washington, D.C., 20036, USA, <adriantreves@hotmail.com>.
CONSERVING CARNIVORES IN HUMAN-MODIFIED ECOSYSTEMS: STRATEGIES FOR THE NEW MILLENNIUM
All large carnivore species inhabit regions of multiple use wherein human-carnivore
conflicts arise. Sociopolitical changes have allowed some carnivore populations to
recover, but public tolerance erodes quickly when domestic animals or humans are
threatened. Therefore, effective management of human-carnivore conflict is critical
to long-term conservation of carnivores. I describe a goal of self-sustaining carnivore
populations existing in minimal conflict with humans and managed with public input.
This goal depends on managing both humans and carnivores in areas of repeated conflict.
Within such areas, managers must use a mix of public participation in management,
law enforcement, environmental education and incentive systems, coupled with the
full range of non-lethal deterrents and removal techniques to minimize threats to
lives and livelihoods. Researchers can advance this goal by identifying risk factors
among all individuals involved in conflict, as well as the landscape attributes of
sites of conflict. Together, managers and researchers must focus scarce time and
resources in those areas facing the highest future risk. By preempting carnivore
predation on humans and domestic animals, we may reduce non-selective, retaliatory
killing of carnivores and improve public tolerance for conservation programs. Carnivore
conservation therefore requires interdisciplinary collaboration among social scientists,
biologists and managers.
17.15 - 17.30
Discussion
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