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Author |
Ale, S.; Whelan, C. |
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Title |
Reappraisal of the role of big, fierce predators |
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Miscellaneous |
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2008 |
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Biodiversity Conservation |
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685-690 |
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Biodiversity ú Conservation ú Costs of predation ú Indirect effects ú Non-lethal effects ú Predators ú Top-down control; big; predators; predator |
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Abstract |
The suggestion in the early 20th century that top predators were a necessary component of ecosystems because they hold herbivore populations in check and promote biodiversity was at Wrst accepted and then largely rejected. With the advent of Evolutionary Ecology and a more full appreciation of direct and indirect effects of top predators, this role of top predators is again gaining acceptance. The previous views were predicated upon lethal effects of predators but largely overlooked their non-lethal effects. We suggest that
conceptual advances coupled with an increased use of experiments have convincingly demonstrated that prey experience costs that transcend the obvious cost of death. Prey species use adaptive behaviours to avoid predators, and these behaviours are not cost-free. With predation risk, prey species greatly restrict their use of available habitats and consumption of available food resources. Effects of top predators consequently cascade down to the trophic levels below them. Top predators, the biggies, are thus both the targets of and the means for conservation at the landscape scale. |
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Call Number |
SLN @ rana @ 885 |
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52 |
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Author |
Ale, S.; Brown, J. |
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Title |
The contingencies of group size and vigilance |
Type |
Miscellaneous |
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Year |
2007 |
Publication |
Evolutionary Ecology Research, |
Abbreviated Journal |
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9 |
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1263-1276 |
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Keywords |
attraction effect,contingency,dilution effect,fitness,group-size effect,many-eyes effect,predation risk,vigilance behaviour; predation; decline; potential; predators; predator; feeding; Animals; Animal; use; food; effects; Relationship; behaviour; methods; game; Interactions; interaction; factor; value; Energy |
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Abstract |
Background: Predation risk declines non-linearly with one's own vigilance and the vigilance of others in the group (the 'many-eyes' effect). Furthermore, as group size increases, the individual's risk of predation may decline through dilution with more potential victims, but may increase if larger groups attract more predators. These are known, respectively, as the dilution effect and the attraction effect.
Assumptions: Feeding animals use vigilance to trade-off food and safety. Net feeding rate declines linearly with vigilance.
Question: How do the many-eyes, dilution, and attraction effects interact to influence the relationship between group size and vigilance behaviour?
Mathematical methods: We use game theory and the fitness-generating function to determine the ESS level of vigilance of an individual within a group.
Predictions: Vigilance decreases with group size as a consequence of the many-eyes and dilution effects but increases with group size as a consequence of the attraction effect, when they act independent of each other. Their synergetic effects on vigilance depend upon the relative strengths of each and their interactions. Regardless, the influence of other factors on vigilance – such as encounter rate with predators, predator lethality, marginal value of energy, and value of vigilance – decline with group size. |
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SLN @ rana @ 886 |
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53 |
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Author |
Ale, S.B. |
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Title |
Snow Leopard in Remote Districts of Nepal |
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Miscellaneous |
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Year |
1994 |
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xii |
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Nepal; Manang; livestock; livestock-depredation; baiting; predation; villagers; herders; annapurna; retribution; conservation; management; training; tourism; browse; 4600 |
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Islt |
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Seattle |
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Full Text at URLJournal Title: Snow Line |
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SLN @ rana @ 447 |
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54 |
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Author |
Ale, S.B. |
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Title |
The Annapurna Conservation Area Project: A Case Study of an Integrated Conservation and Development Project in Nepal |
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Conference Article |
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1997 |
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155-169 |
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conservation; annapurna; park; parks; reserve; reserves; refuge; management; habitat; livestock; herders; herder; Acap; education; community-development; tourism; women; protected-area; browse; community; development; protected; area; 2960 |
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Islt |
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Lahore, Pakistan |
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Jackson, R.; Ahmad, A. |
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Full text at URLTitle, Monographic: Eighth International Snow Leopard SymposiumPlace of Meeting: Islamabad, PakistanDate of Copyright: 1997 |
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SLN @ rana @ 394 |
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55 |
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Author |
Ale, S.B. |
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Title |
Religion and Snow Leopards in Nepal |
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Miscellaneous |
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1998 |
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Snow Line |
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xvi |
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10-10 |
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Nepal; religion; tourism; Culture; folklore; buddhism; 4850 |
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Islt |
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Seattle |
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Journal Title: Snow Line |
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Call Number |
SLN @ rana @ 472 |
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56 |
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Author |
Ale, S.B.; Karky, B.S. |
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Title |
Observations on Conservation of Snow Leopards in Nepal |
Type |
Conference Article |
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2002 |
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4880; bio; conservation; diversity; enclave; leopard; management; Nepal; poverty; protected; protection; religion; uncia |
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The wild populations of snow leopards are threatened in Nepal. For their effective conservation, this paper seeks to build a strategy based not only on protected enclaves but also on landscapes, using an integrated grass-roots approach that essentially reduces poverty and addresses the needs of human beings and that of wildlife. Also equally relevant in places with a strong hold by religious and cultural authorities in the decision-making processes is the recognition and possible integration of cultural and traditional belief systems in overall snow leopard conservation schemes. |
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Islt |
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Title, Monographic: Proceedings of the Snow Leopard Survival SummitPlace of Meeting: Seattle,WA |
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SLN @ rana @ 474 |
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57 |
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Author |
Ale, S.B.; Yonzon, P.; Thapa, K. |
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Title |
Recovery of snow leopard Uncia uncia in Sagarmatha (Mount Everest) National Park, Nepal |
Type |
Miscellaneous |
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Year |
2007 |
Publication |
Oryx |
Abbreviated Journal |
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41 |
Issue |
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Pages |
89-92 |
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Keywords |
Nepal; recovery; Sagarmatha Mount Everest National Park; snow leopard; Uncia uncia; surveys; survey; snow; snow-leopard; leopard; uncia; Uncia-uncia; valley; Sagarmatha; national; national park; National-park; park; using; information; management; system; research; transects; transect; sign; areas; area; snow leopards; snow-leopards; leopards; 40; Himalayan; tahr; musk; musk-deer; deer; location; recent; species; grazing; land; Forest; habitat; domestic; wild; ungulates; ungulate; livestock; tourism; development; traditional; land use; land-use; use; wildlife |
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From September to November 2004 we conducted surveys of snow leopard Uncia uncia signs in three major valleys in Sagarmatha (Mount Everest) National Park in Nepal using the Snow Leopard Information Management System, a standardized survey technique for snow leopard research. We walked 24 transects covering c. 14 km and located 33 sites with 56 snow leopard signs, and 17 signs incidentally in other areas. Snow leopards appear to have re-inhabited the Park, following their disappearance c. 40 years ago, apparently following the recovery of Himalayan tahr Hemitragus jemlahicus and musk deer Moschus chrysogaster populations. Taken together the locations of all 73 recent snow leopard signs indicate that the species is using predominantly grazing land and shrubland/ open forest at elevations of 3,000-5,000 m, habitat types that are also used by domestic and wild ungulates. Sagarmatha is the homeland of c. 3,500 Buddhist Sherpas with .3,000 livestock. Along with tourism and associated developments in Sagarmatha, traditional land use practices could be used to ensure coexistence of livestock and wildlife, including the recovering snow leopards, and ensure the wellbeing of the Sherpas. |
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http://www.snowleopardnetwork.org/bibliography/Ale_2007.pdf |
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SLN @ rana @ 884 |
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58 |
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Jackson, R.M.; Ahlborn, G.; Gurung, M.; Ale, S. |
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Title |
Reducing livestock depredation losses in the Nepalese Himalaya |
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Journal Article |
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1996 |
Publication |
Proc.Vertebr.Pest Conf |
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17 |
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241-247 |
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damage; damage-by-wildlife; endangered; threatened species; livestock; mammals; management; predator-control; public-relations; wildlife; livestock-relationships; Nepal; asia; herders; conservation; Manang; Khangshar; depredation; conflict; predator; prey; browse; public; threatened; species; control; Relations; 700 |
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The authors investigated livestock depredation patterns of snow leopards on the northern slopes of the Himalayans near the villages of Manang and Khangshar, Nepal. Information is discussed on the relationships among livestock loss, endangered species management, public relations/conservation issues, and cooperative efforts among institutions involved in the decision making process. A plan is devised for alleviating livestock loss and protecting endangered species in the area. pcp |
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Full Text at URL: ADDRESS: Mountain Inst., Main & Dogwood St., Franklin, WV 26807//“Proceedings Seventeenth Vertebrate Pest Conference-March 5-7, 1996, Rohnert Park, California”; Timm, Robert M.; Crabb, A. Charles, editorsDocument Type: English |
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SLN @ rana @ 271 |
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480 |
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Author |
Ale, S. |
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Title |
Conservation of the snow leopard in Nepal |
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Miscellaneous |
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Nepal; radio-collars; tracking; Annapurna-Conservation-Area; protected-areas; parks; reserves; refuge; conservation; livestock; religion; folklore; blue-sheep; blue; sheep; browse; radio collars; radio; collar; collars; annapurna conservation area; annapurna; area; protected; areas; 4080 |
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Full text available at URL |
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SLN @ rana @ 2 |
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51 |
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Schutgens, M. G., Hanson, J. H., Baral, N., Ale, S. B. |
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Title |
Visitors’ willingness to pay for snow leopard Panthera uncia conservation in the Annapurna Conservation Area, Nepal |
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Journal Article |
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2018 |
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Oryx |
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1 - 10 |
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Carnivore conservation, contingent valuation, economic valuation, existence value, Panthera uncia, snow leopard, threatened species, wildlife policy |
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The Vulnerable snow leopard Panthera uncia experiences
persecution across its habitat in Central Asia, particularly
from herders because of livestock losses. Given the
popularity of snow leopards worldwide, transferring some
of the value attributed by the international community to
these predators may secure funds and support for their conservation.
We administered contingent valuation surveys to
 international visitors to the Annapurna Conservation
Area, Nepal, between May and June , to determine
their willingness to pay a fee to support the implementation
of a Snow Leopard Conservation Action Plan. Of the %of
visitors who stated they would pay a snow leopard conservation
fee in addition to the existing entry fee, the mean
amount that they were willing to pay was USD  per trip.
The logit regression model showed that the bid amount, the
level of support for implementing the Action Plan, and the
number of days spent in the Conservation Area were significant
predictors of visitors’ willingness to pay. The main reasons
stated by visitors for their willingness to pay were a
desire to protect the environment and an affordable fee. A
major reason for visitors’ unwillingness to pay was that
the proposed conservation fee was too expensive for them.
This study represents the first application of economic valuation
to snow leopards, and is relevant to the conservation of
threatened species in the Annapurna Conservation Area
and elsewhere. |
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http://snowleopardnetwork.org/bibliography/Schutgensetal_2018.pdf |
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SLN @ rakhee @ |
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1467 |
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