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| Author | Suryawanshi, K. R., Khanyari, M., Sharma, K., Lkhagvajav, P., Mishra, C. | ||||
| Title | Sampling bias in snow leopard population estimation studies | Type | Journal Article | ||
| Year | 2019 | Publication | Population Eccology | Abbreviated Journal | |
| Volume | Issue | Pages | 1-9 | ||
| Keywords | camera trap, Central Asia, Himalaya, meta-analysis, monitoring, Panthera uncia, population ecology | ||||
| Abstract | Accurate assessments of the status of threatened species and their conservation planning require reliable estimation of their global populations and robust monitoring of local population trends. We assessed the adequacy and suitability of studies in reliably estimating the global snow leopard (Panthera uncia) population. We compiled a dataset of all the peer-reviewed published literature on snow leopard population estimation. Metadata analysis showed estimates of snow leopard density to be a negative exponential function of area, suggesting that study areas have generally been too small for accurate density estimation, and sampling has often been biased towards the best habitats. Published studies are restricted to six of the 12 range countries, covering only 0.3�0.9% of the presumed global range of the species. Re-sampling of camera trap data from a relatively large study site (c.1684 km2) showed that small-sized study areas together with a bias towards good quality habitats in existing studies may have overestimated densities by up to five times. We conclude that current information is biased and inadequate for generating a reliable global population estimate of snow leopards. To develop a rigorous and useful baseline and to avoid pitfalls, there is an urgent need for (a) refinement of sampling and analytical protocols for population estimation of snow leopards (b) agreement and coordinated use of standardized sampling protocols amongst researchers and governments across the range, and (c) sampling larger and under-represented areas of the snow leopard's global range. |
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Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1477 | ||
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| Author | Mallon, D. P., Jackson, R. M. | ||||
| Title | A downlist is not a demotion: Red List status and reality | Type | Journal Article | ||
| Year | 2017 | Publication | Oryx | Abbreviated Journal | |
| Volume | Issue | Pages | 1-5 | ||
| Keywords | Cryptic, IUCN Red List, Panthera uncia, population estimate, snow leopard, species assessment | ||||
| Abstract | Assessments of biodiversity status are needed to track trends, and the IUCN Red List has become the accepted global standard for documenting the extinction risk of species. Obtaining robust data on population size is an essential component of any assessment of a species� status, including assessments for the IUCN Red List. Obtaining such estimates is complicated by methodological and logistical issues, which are more pronounced in the case of cryptic species, such as the snow leopard Panthera uncia. Estimates of the total population size of this species have, to date, been based on little more than guesstimates, but a comprehensive summary of recent field research indicates that the conservation status of the snow leopard may be less dire than previously thought. A revised categorization, from Endangered to Vulnerable, on the IUCN Red List was proposed but met some opposition, as did a recent, similar recategorization of the giant panda Ailuropoda melanoleuca. Possible factors motivating such attitudes are discussed. Downlisting on the IUCN Red List indicates that the species concerned is further from extinction, and is always to be welcomed, whether resulting from successful conservation intervention or improved knowledge of status and trends. Celebrating success is important to reinforce the message that conservation works, and to incentivize donors. |
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Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1460 | ||
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| Author | Ferretti, F., Lovari, S., Minder, I., Pellizzi, B. | ||||
| Title | Recovery of the snow leopard in Sagarmatha (Mt.Everest) National Park: effects on main prey | Type | Journal Article | ||
| Year | 2014 | Publication | European Journal of Wildlife Research | Abbreviated Journal | |
| Volume | Issue | 60 | Pages | 559-562 | |
| Keywords | Predator–prey relationships . Small populations . Snow leopard . Himalayan tahr | ||||
| Abstract | Consequences of predation may be particularly heavy on small populations of herbivores, especially if they are threatened with extinction. Over the 2006–2010 period, we documented the effects of the spontaneous return of the endangered snow leopard on the population of the vulnerable Himalayan tahr. The study area was an area of central Himalaya where this cat disappeared c. 40 years before, because of persecution by man. Snow leopards occurred mainly in areas close to the core area of tahr distribution. Tahr was the staple (56.3 %) of snow leopards. After the arrival of this cat, tahr decreased by more than 2/3 from 2003 to 2010 (mainly through predation on kids). Subsequently, the density of snow leopards decreased by 60%from2007 to 2010. The main prey of snow leopards in Asia (bharal, marmots) were absent in our study area, forcing snow leopards to specialize on tahr. The restoration of a complete prey spectrum should be favoured through reintroductions, to conserve large carnivores and to reduce exploitation of small populations of herbivores, especially if threatened. |
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Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1408 | ||
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| Author | Karanth, K.U., Nichols, J.D., Seidensticker, J., Dinerstein, E., David Smith, J.L., McDougal, C., Johnsingh, A.J.T., Chundawat, R.S., Thapar, V. | ||||
| Title | Science deficiency in conservation practice: the monitoring of tiger populations in India | Type | Journal Article | ||
| Year | 2003 | Publication | Animal Conservation | Abbreviated Journal | |
| Volume | 6 | Issue | Pages | 141-146 | |
| Keywords | population monitoring, sampling, tiger, pugmark, census, pugmark census | ||||
| Abstract | Conservation practices are supposed to get refined by advancing scientific knowledge. We study this phenomenon in the context of monitoring tiger populations in India, by evaluating the ‘pugmark census method’ employed by wildlife managers for three decades. We use an analytical framework of modern animal population sampling to test the efficacy of the pugmark censuses using scientific data on tigers and our field observations. We identify three critical goals for monitoring tiger populations, in order of increasing sophistication: (1) distribution mapping, (2) tracking relative abundance, (3) estimation of absolute abundance. We demonstrate that the present census-based paradigm does not work because it ignores the first two simpler goals, and targets, but fails to achieve, the most difficult third goal. We point out the utility and ready availability of alternative monitoring paradigms that deal with the central problems of spatial sampling and observability. We propose an alternative sampling-based approach that can be tailored to meet practical needs of tiger monitoring at different levels of refinement. | ||||
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| Publisher | The Zoological Society of London | Place of Publication | United Kingdom | Editor | |
| Language | English | Summary Language | Original Title | ||
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Approved | no | |||
| Call Number | SLN @ rana @ | Serial | 1307 | ||
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| Author | McCarthy, T.; Murray, K.; Sharma, K.; Johansson, O. | ||||
| Title | Preliminary results of a long-term study of snow leopards in South Gobi, Mongolia | Type | Journal Article | ||
| Year | 2010 | Publication | Cat News | Abbreviated Journal | |
| Volume | Autumn | Issue | 53 | Pages | 15-19 |
| Keywords | snow leopard, Mongolia, monitor, population, Panthera, Snow Leopard Trust, Snow Leopard Conservation Fund, South Gobi, ecology, radio collar, GPS-satellite collar, home range, camera trapping, fecal genetics, occupancy modeling | ||||
| Abstract | Snow leopards Panthera uncia are under threat across their range and require urgent conservation actions based on sound science. However, their remote habitat and cryptic nature make them inherently difficult to study and past attempts have provided insufficient information upon which to base effective conservation. Further, there has been no statistically-reliable and cost-effective method available to monitor snow leopard populations, focus conservation effort on key populations, or assess conservation impacts. To address these multiple information needs, Panthera, Snow Leopard Trust, and Snow Leopard Conservation Fund, launched an ambitious long-term study in Mongolia’s South Gobi province in 2008. To date, 10 snow leo-pards have been fitted with GPS-satellite collars to provide information on basic snow leopard ecology. Using 2,443 locations we calculated MCP home ranges of 150 – 938 km2, with substantial overlap between individuals. Exploratory movements outside typical snow leopard habitat have been observed. Trials of camera trapping, fecal genetics, and occupancy modeling, have been completed. Each method ex-hibits promise, and limitations, as potential monitoring tools for this elusive species. | ||||
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| Language | English | Summary Language | Original Title | ||
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Approved | no | |||
| Call Number | SLN @ rana @ | Serial | 1151 | ||
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| Author | Xu, F.; Ming, M.; Yin, S.-jing; Mardan | ||||
| Title | Snow Leopard Survey in Tumor Nature Reserve, Xingjiang | Type | Miscellaneous | ||
| Year | 2005 | Publication | Sichuan Journal of Zoology | Abbreviated Journal | |
| Volume | 24 | Issue | 4 | Pages | 608-610 |
| Keywords | snow; snow leopard; snow-leopard; leopard; survey; nature; reserve; national; Xinjiang; China; sign; big; cat; spray; distribution; population; habitat; Habitat selection; selection; river; area; Tomur; transects; transect; scrapes; scrape; feces; areas; valley | ||||
| Abstract | Snow leopard survey was conducted in Oct-Nov 2004 at Tumor National Natural Reserve, Xinjiang, China. Because of its special living style, the snow leopard is difficult to observe by sight. Signs left by snow leopard become a good index to prove the existance of the big cat. There are mainly five kinds of signs, footprints, fectes, claw rakes and urine spray. From them we can know the distribution, probably population and habitat selection of snow leopard. This time in Tumor we investigated 5 difference places: Pochenzi in Mozat River area, Boxidun in Little Kuzbay River area, Yinyer in Tomur River area, Kurgan and Taglak in Quiong Tailan River area. 42 transects were run in this trip and a total of 57 signs found. Among them, footprints amounted to 71.9%, scrapes 21.1%, and feces 7.0%. The results showed that the big cat existed in Yinyer, Kurgan and Taglak areas and liked to select their habitat in the valley and didn't like to live in barren areas. | ||||
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Approved | no | |||
| Call Number | SLN @ rana @ 873 | Serial | 1034 | ||
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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 | ||
| Volume | Issue | Pages | |||
| Keywords | densities; density; habitat; habitat utilization; ibex; national; nature; population; Population-Density; Tomur | ||||
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Approved | no | |||
| Call Number | SLN @ rana @ 867 | Serial | 1037 | ||
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| Author | Jackson, R.; Fox, J.L. | ||||
| Title | Report on Fifth Slims Training Workshop (Nepal) | Type | Miscellaneous | ||
| Year | 2000 | Publication | Snow Line | Abbreviated Journal | |
| Volume | xvii | Issue | Pages | 6-15 | |
| Keywords | Slims; Nepal; training; techniques; Gps; field-work; surveys; Tibet; habitat; China; hunting; poaching; livestock; population; Shey-Phoksundo; parks; protected-area; reserves; annapurna; Dhorpatan; Manaslu; Sagarmatha; Langtang; Islt; Wwf; Hmg; Dnpwc; browse; 4460 | ||||
| Abstract | Nepal's snow leopards (Uncia uncia) are mostly found along the northern border with Tibet (China). The largest populations are in Dolpa, Mugu, Manang, and Myagdi Districts. Potential habitat totals about 30,000 square kilometers. Numbers are estimated at 300-500, but surveys are urgently needed to confirm this rough guess. Like elsewhere, the primary threats center on poaching, depletion of natural prey, livestock depredation and resultant retributive killing of snow leopards by herders, and the lack of public awareness and support for conserving snow leoaprds, especially among local herders. | ||||
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| Publisher | International Snow Leopard Trust | Place of Publication | Seattle | Editor | |
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Approved | no | |||
| Call Number | SLN @ rana @ 434 | Serial | 466 | ||
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| Author | Ahmad, S., Rehman, E. U., Ali, H., Din, N., Haider, J., Din, J. U., Nawaz, M. A. | ||||
| Title | Density Pattern of Flare-Horned Markhor (Capra falconeri) in Northern Pakistan | Type | Journal Article | ||
| Year | 2022 | Publication | Sustainability | Abbreviated Journal | |
| Volume | 14 | Issue | 9567 | Pages | 1-13 |
| Keywords | markhor; Capra falconeri; Gilgit-Baltistan; Karakoram; population; double-observer; CGNP | ||||
| Abstract | Wild ungulates play vital roles in maintaining a balanced ecosystem through herbivory and are also an important determinant of carnivores’ density. The flare-horned markhor (Capra falconeri) is a threatened wild goat distributed across the mountain ranges of Pakistan, India, Afghanistan, Russia, Turkmenistan, Uzbekistan, and Tajikistan. The remote terrain and fragmented population limit our understanding of the population ecology of markhor, though knowledge of the target species population is vital for making informed management decisions. Therefore, the current study was designed to determine the markhor population across their range in Northern Pakistan and to evaluate the efforts made by the government and non-government organizations for the conservation of markhor. Double-observer surveys were conducted during 2019–2021 in nine major watersheds of Khyber Pakhtunkhwa and Gilgit-Baltistan covering an area of 4664 km2. Secondary data were collected for unassessed areas to gain a holistic overview of the markhor population and density in the region. Results revealed a markhor population of 7579, with a density of 0.30 animals per km2 in Northern Pakistan. Our analysis of the double-observer data through the Bayesian behavioral capture–recapture model estimated a population of 5993 individuals (95% CI) of markhor across nine study sites, with a density of 1.28 animals per km . A review of secondary data revealed that a population of about 1586 was present in the un-surveyed area (20,033.33 km2), with a density of 0.08 per km . A total of 146 groups of markhor were counted, with a mean group size of 23 (3–58) individuals. There were 109 males and 108 young per 100 females in the population. Among 1936 recorded males, Class I males accounted for 27.74%, followed by Class II (26.45%), Class IV (trophy-size) (23.40%), and Class III (22.42%). The overall detection probability was recorded as 0.87 and 0.68 for the first observer and second observer, respectively. Compared with the past reports, the population of markhor in Northern Pakistan appears to be increasing, particularly in protected areas (PAs) such as national parks and community-controlled hunting areas (CCHAs). Conservation programs, notably trophy hunting and PA networks, appear to be vital in sustaining markhor populations in parts of the species range. We recommend expansion in such programs in the markhor range in order to maintain a viable population of this majestic wild goat in the region. |
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Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1695 | ||
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| Author | Blomqvist, L. | ||||
| Title | The 1981 annual report of the captive snow leopards (Panthera uncia) population | Type | Report | ||
| Year | 1982 | Publication | International Pedigree Book of Snow Leopards | Abbreviated Journal | |
| Volume | Issue | Pages | 41-47 | ||
| Keywords | captive; Panthera-uncia; panthera uncia; pedigree; population; snow leopard | ||||
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| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | International Pedigree Book of Snow Leopards | Abbreviated Series Title | ||
| Series Volume | 3 | Series Issue | Edition | ||
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Approved | no | |||
| Call Number | SLN @ rana @ 956 | Serial | 155 | ||
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