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| Author | Chetri, M, Odden, M., Sharma, K., Flagstad, O., Wegge, P | ||||
| Title | Estimating snow leopard density using fecal DNA in a large landscape in north-central Nepal | Type | Journal Article | ||
| Year | 2019 | Publication | Global Ecology and Conservation | Abbreviated Journal | |
| Volume | Issue | 17 | Pages | 1-8 | |
Keywords  |
Panthera uncia, Density, Annapurna-Manaslu landscape, Noninvasive, Spatial scale | ||||
| Abstract | Although abundance estimates have a strong bearing on the conservation status of a species, less than 2% of the global snow leopard distribution range has been sampled systematically, mostly in small survey areas. In order to estimate snow leopard density across a large landscape, we collected 347 putative snow leopard scats from 246 transects (490 km) in twenty-six 5 5km sized sampling grid cells within 4393 km2 in Annapurna- Manaslu, Nepal. From 182 confirmed snow leopard scats, 81 were identified as belonging to 34 individuals; the remaining were discarded for their low (<0.625) quality index. Using maximum likelihood based spatial capture recapture analysis, we developed candidate model sets to test effects of various covariates on density and detection of scats on transects. The best models described the variation in density as a quadratic function of elevation and detection as a linear function of topography. The average density estimate of snow leopards for the area of interest within Nepal was 0.95 (SE 0.19) animals per 100 km2 (0.66e1.41 95% CL) with predicted densities varying between 0.1 and 1.9 in different parts, thus highlighting the heterogeneity in densities as a function of habitat types. Our density estimate was low compared to previous estimates from smaller study areas. Probably, estimates from some of these areas were inflated due to locally high abundances in overlap zones (hotspots) of neighboring individuals, whose territories probably range far beyond study area borders. Our results highlight the need for a large-scale approach in snow leopard monitoring, and we recommend that methodological problems related to spatial scale are taken into account in future snow leopard research. |
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1478 | ||
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| Author | Oli, M.K. | ||||
| Title | Snow leopards and blue sheep in Nepal: Densities and predator: prey ratio | Type | Journal Article | ||
| Year | 1994 | Publication | Journal of Mammalogy | Abbreviated Journal | |
| Volume | 75 | Issue | 4 | Pages | 998-1004 |
| Keywords |
Nepal; blue-sheep; prey; livestock; predation; blue; sheep; browse; 740; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; blue sheep; densities; density; predator | ||||
| Abstract | I studied snow leopards (Panthera uncia) and blue sheep (Pseudois nayaur) in Manang District, Annapurna Conservation Area, Nepal, to estimate numbers and analyze predator-prey interactions. Five to seven adult leopards used the 10-5-km-2 study area, a density of 4.8 to 6.7 leopards/100 km-2. Density of blue sheep was 6.6 10.2 sheep/km-2, and biomass density was 304 kg/km-2. Estimated relative biomass consumed by snow leopards suggested that blue sheep were the most important prey; marmots (Marmota himalayana) also contributed significantly to the diel of snow leopards Snow leopards in Manang were estimated to harvest 9-20% of total biomass and 11-24% of total number of blue sheep annually. Snow leopard: blue sheep ratio was 1:114-1:159 on a weight basis, which was considered sustainable given the importance of small mammals in the leopard's diet and the absence of other competing predators. | ||||
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| Notes | Document Type: English Call Number: 599.05 JO | Approved | no | ||
| Call Number | SLN @ rana @ 236 | Serial | 746 | ||
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| Author | Ming, M.; Munkhtsog, B.; Xu, F.; Turghan, M.; Yin, S.-jing; Wei, S.-D. | ||||
| Title | Markings as Indicator of Snow Leopard in Field Survey, in Xinjiang | Type | Miscellaneous | ||
| Year | 2005 | Publication | Chinese Journal of Zoology | Abbreviated Journal | |
| Volume | Issue | Pages | 34-39 | ||
| Keywords |
markings; marking; snow leopard; leopard; field survey; Xinjiang; Chinese; Uncia uncia; Uncia-uncia; China; Tianshan Mountains; conservation; field work; length; snow leopards; snow-leopards; density; densities; pug; pug marks; marks; scrapes; scrape; feces; scent; spray; Hair; fur; prey; habitat; Habitat selection; selection; distribution; region; relative abundance; abundance; study; areas; knowledge; potential; conservation problems; Human; attitudes; attitude; 200 | ||||
| Abstract | The Snow Leopard (Uncia uncia) was a very rare species in China. The survey on the markings of Snow Leopard in Ahay and Tianshan Mountains is the major activity of the Project of Snow Leopard in Xinjiang, supported by International Snow Leopard Trust(ISLT)and Xinjiang Conservation Fund(XCF). During the field work from Sep to Nov 2004 the Xinjiang Snow Leopard Group(XSLG) set 67 transects of a total length of 47 776 m with mean transect length is 7 1 3 m at 9 locations.Total of 1 l 8 markings of Snow Leopards were found in 27 transects the mean density is 247km. The markings of Snow Leopard included the pug marks or footprints, scrapes, feces, bloodstain, scent spray, urine, hair or fur, claw rake, remains of prey corpse, sleep site, roar and others. From the quantity and locations of marks the XSLG got the information on habitat selection distribution region and relative abundance of the Snow Leopard in the study areas. The survey also provided knowledge on distribution and abundance of major prey potential conservation problems and human attitudes to Snow Leopards by taking 200 questionnaires in the study areas. | ||||
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| Notes | Full text available in Chinese | Approved | no | ||
| Call Number | SLN @ rana @ 875 | Serial | 681 | ||
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| Author | Zhiryakov V.A. | ||||
| Title | Ecology and behavior of the Snow leopard in Kazakhstan | Type | Miscellaneous | ||
| Year | 2002 | Publication | Abbreviated Journal | ||
| Volume | N 1-4. | Issue | Pages | 184-199 | |
| Keywords |
Kazakhstan; distribution; number; density; population size; habitats; marking; Migration; diet; prey species; hunting; faeces; Sex; Age; population dynamics; reproductive activity; competitors; mortality; snow leopard.; 8810; Russian | ||||
| Abstract | The data on spreading, numbers and population density of snow leopard in Kazakhstan are given in this article. The total number of the snow leopard in Kazakhstan is evaluated in 100-110 individuals. The everywhere occurred numbers' reduction under the influence of the anthropogenic factors is observed. The snow leopard' inhabitation area varies from 20 to 120 square kilometers depending on its regions. Sex and composition of the population and its aggregative behavior are given. The dynamics of numbers and mortality are estimated. | ||||
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| Notes | Full text available in Russian.Journal Title: Selevinia. The zoological journal of Kazakhstan. | Approved | no | ||
| Call Number | SLN @ rana @ 858 | Serial | 1087 | ||
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| Author | Henschel, P.; Ray, J. | ||||
| Title | Leopards in African Rainforests: Survey and Monitoring Techniques | Type | Miscellaneous | ||
| Year | 2003 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords |
forest leopards; african rainforests; survey; monitoring techniques; lope reserve; gabon; central africa; congo; zaire; field testing; populations; wild meat; relative abundance; density; live-trapping; presence and absense surveys; ad-hoc survey; bushmeat; systematic survey; monitoring; individual identification; tracks; Discriminant Function Analysis; genotyping; scat; Hair; Dna; remote photography; camera trapping; capture rates; Trailmaster; Camtrakker; bait; duikers; pigs; elephant; bongo; okapi; human hunters; 5300 | ||||
| Abstract | Monitoring Techniques Forest leopards have never been systematically surveyed in African forests, in spite of their potentially vital ecological role as the sole large mammalian predators in these systems. Because leopards are rarely seen in this habitat, and are difficult to survey using the most common techniques for assessing relative abundances of forest mammals, baseline knowledge of leopard ecology and responses to human disturbance in African forests remain largely unknown. This technical handbook sums up the experience gained during a two-year study of leopards by Philipp Henschel in the Lop‚ Reserve in Gabon, Central Africa, in 2001/2002, supplemented by additional experience from carnivore studies conducted by Justina Ray in southwestern Central African Republic and eastern Congo (Zaire) . The main focus of this effort has been to develop a protocol that can be used by fieldworkers across west and central Africa to estimate leopard densities in various forest types. In developing this manual, Henschel tested several indirect methods to assess leopard numbers in both logged and unlogged forests, with the main effort devoted to testing remote photography survey methods developed for tigers by Karanth (e.g., Karanth 1995, Karanth & Nichols 1998; 2000; 2002), and modifying them for the specific conditions characterizing African forest environments. This handbook summarizes the results of the field testing, and provides recommendations for techniques to assess leopard presence/absence, relative abundance, and densities in African forest sites. We briefly review the suitability of various methods for different study objectives and go into particular detail on remote photography survey methodology, adapting previously developed methods and sampling considerations specifically to the African forest environment. Finally, we briefly discuss how camera trapping may be used as a tool to survey other forest mammals. Developing a survey protocol for African leopards is a necessary first step towards a regional assessment and priority setting exercise targeted at forest leopards, similar to those carried out on large carnivores in Asian and South American forests. | ||||
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| Publisher | Place of Publication | Editor | Wildlife Conservation Society | ||
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| Notes | Approved | no | |||
| Call Number | SLN @ rana @ 515 | Serial | 382 | ||
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| Author | Xu, F.; Ma, M.; Wu, Y.-Q. | ||||
| Title | Population density and habitat utilization of ibex in Tomur National Nature Reserve,Xinjiang,China | Type | Miscellaneous | ||
| Year | 2007 | Publication | Abbreviated Journal | ||
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| Keywords |
densities; density; habitat; habitat utilization; ibex; national; nature; population; Population-Density; Tomur | ||||
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| Notes | Approved | no | |||
| Call Number | SLN @ rana @ 867 | Serial | 1037 | ||
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| Author | Fox, J.L.; Chundawat, R.S. | ||||
| Title | Wolves in the Transhimalayan region of India: The continued survival of a low-density population | Type | Journal Article | ||
| Year | 1995 | Publication | Canadian Circumpolar Institute Occasional Publication No.35; Ecology and conservation of wolves in a changing world | Abbreviated Journal | |
| Volume | 35 | Issue | Pages | 95-103 | |
| Keywords |
Competition; Population-Density; Tibetan-Wolf; Transhimalayan-Region; Wildlife-Management; browse; population; density; tibetan; wolf; wildlife; management; transhimalayan; region; 710 | ||||
| Abstract | Canadian Cirumpolar Institute, University of Alberta, Edmonton, Alberta, Canada/Second North American Symposium on Wolves, Edmonton, Alberta, Canada, August 25-27, 1992 | ||||
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| Call Number | SLN @ rana @ 272 | Serial | 306 | ||
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| Author | Sharma, M., Khanyari, M., Khara, A., Bijoor, A., Mishra, C., Suryawanshi, K. R. | ||||
| Title | Can livestock grazing dampen density-dependent fluctuations in wild herbivore populations? | Type | Journal Article | ||
| Year | 2024 | Publication | Journal of Applied Ecology | Abbreviated Journal | |
| Volume | Issue | Pages | 1-12 | ||
| Keywords |
competition, Gompertz state-space model, Himalaya, livestock, long-term study, negative density dependence, recruitment | ||||
| Abstract | 1. Conservation policy for the high mountains of Asia increasingly recognises the need to encompass large multi-use landscapes beyond the protected area network. Due to limited long-term research in this region, our understanding of even fundamental processes, such as factors regulating large mammal populations is poor. 2. Understanding the factors that regulate animal populations, especially those generating cyclicity, is a long-standing problem in ecology. Long-term research across multiple taxa (mainly from Europe and North America) has focussed on the relative roles of food and predation in generating cyclicity in population dynamics. It remains unclear how trophic interactions that are influenced by anthropogenic stressors can affect population dynamics in human-modified landscapes. 3. We present a 10-year study to compare the effects of livestock grazing on density-dependent dynamics in two populations of bharal, Pseudois nayaur, in the Himalayas. We combine this with a mechanistic understanding of whether density dependence in these two sites acts predominantly by affecting adult survival or recruitment. We compared and quantified density dependence in the bharal population by fitting Bayesian Gompertz state-space models. 4. We found evidence for negative density dependence which indicates possible cyclic dynamics in the bharal population of the site (Tabo) with low livestock density. The population dynamics of this site were driven by recruited offspring—with a 2-year density-dependent lag effect—rather than adult survival. In the site with high livestock density (Kibber), this density dependence was not detected. We postulate the potential role of excessive grazing by livestock in affecting offspring recruitment, thereby affecting the bharal population in Kibber. 5. Synthesis and applications: Our results suggest that conservation action to facilitate wild herbivore population recovery, such as the development of protected areas and village reserves, needs to account for density-dependent regulation. Sites with trophy hunting require continuous monitoring to understand the effects of density dependence so that appropriate hunting quotas can be formulated. |
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| Call Number | SLN @ rakhee @ | Serial | 1747 | ||
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| Author | Sharma, R. K., Sharma, K., Borchers, D., Bhatnagar, Y. V., Suryawanshi, K. S., Mishra, C. | ||||
| Title | Spatial variation in population-density, movement and detectability of snow leopards in 2 a multiple use landscape in Spiti Valley, Trans-Himalaya | Type | Journal Article | ||
| Year | 2020 | Publication | bioRxiv | Abbreviated Journal | |
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Co-existence; land sharing; population-density; spatial capture recapture; Pseudois nayaur Capra sibirica; ungulates; livestock. | ||||
| Abstract | The endangered snow leopard Panthera uncia occurs in human use landscapes in the mountains of South and Central Asia. Conservationists generally agree that snow leopards must be conserved through a land-sharing approach, rather than land-sparing in the form of strictly protected areas. Effective conservation through land-sharing requires a good understanding of how snow leopards respond to human use of the landscape. Snow leopard density is expected to show spatial variation within a landscape because of variation in the intensity of human use and the quality of habitat. However, snow leopards have been difficult to enumerate and monitor. Variation in the density of snow leopards remains undocumented, and the impact of human use on their populations is poorly understood. We examined spatial variation in snow leopard density in Spiti Valley, an important snow leopard landscape in India, via spatially explicit capture recapture analysis of camera trap data. We camera trapped an area encompassing a minimum convex polygon of 953 km . We estimated an overall density of 0.49 (95% CI: 0.39-0.73) adult snow leopards per 100 km . Using AIC, our best model showed the density of snow leopards to depend on wild prey density, movement about activity centres to depend on altitude, and the expected number of encounters at the activity centre to depend on topography. Models that also used livestock biomass as a density covariate ranked second, but the effect of livestock was weak. Our results highlight the importance of maintaining high density pockets of wild prey populations in multiple use landscapes to enhance snow leopard conservation. | ||||
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| Call Number | Serial | 1620 | |||
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| Author | Moheb, Z., Rajabi, A. M., Jahed, N., Ostrowski, S., Zahler, P. I., Fuller, T. K. | ||||
| Title | Using double-observer surveys to monitor urial and ibex populations in the Hindu Kush of Wakhan National Park, Afghanistan | Type | Journal Article | ||
| Year | 2022 | Publication | Oryx | Abbreviated Journal | |
| Volume | Issue | Pages | 1-7 | ||
| Keywords |
Capra sibirica, density, double-observer survey, herd composition, herd size, Ovis vignei, ungulates, viewshed | ||||
| Abstract | We surveyed the urial Ovis vignei and Siberian ibex Capra sibirica in the Hindu Kush mountain range of Wakhan National Park in north-eastern Afghanistan to determine their population status and identify potential drivers of population change. We conducted two double- observer ground surveys, in April–May 2015 and 2018, in 10 areas (total = 288 km2). Urial herds were mostly com- posed of both sexes (78% of observed herds), the mean adult sex ratio (females:males) was 100:70, and the mean female:juvenile ratio was 100:53. In 2018 we calculated a urial density of 35/100 km2, compared to 72/100 km2 in 2015. Ibex herds were mostly (79%) composed of both sexes, the mean adult sex ratio (females:males) was 100:103, and the mean female:juvenile ratio was 100:58. Ibex density estimates were similar in 2015 and 2018 (c. 250/100 km2). We discuss the usefulness of the double-observer methods for ungulate surveys, highlight the value of viewshed calculations and discuss the possible causes of urial population decline. To ensure the conservation of these ungulate populations, we recommend continued regular monitoring, measures to address poaching and research to clarify the taxonomical status of urials in Wakhan. | ||||
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1707 | ||
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