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Author | Bohnett, E., Holmberg, J., Faryabi, S. P., An, L., Ahmad, B., Rashid, W., Ostrowski, S. | ||||
Title | Comparison of two individual identification algorithms for snow leopards (Panthera uncia) after automated detection | Type | Journal Article | ||
Year | 2023 | Publication | Ecological Informatics | Abbreviated Journal | |
Volume | 77 | Issue | 102214 | Pages | 1-14 |
Keywords | Background subtraction, Deep learning, Hotspotter, Individual identification, PIE v2, Snow leopards | ||||
Abstract | Photo-identification of individual snow leopards (Panthera uncia) is the primary data source for density estimation via capture-recapture statistical methods. To identify individual snow leopards in camera trap imagery, it is necessary to match individuals from a large number of images from multiple cameras and historical catalogues, which is both time-consuming and costly. The camouflaged snow leopards also make it difficult for machine learning to classify photos, as they blend in so well with the surrounding mountain environment, rendering applicable software solutions unavailable for the species. To potentially make snow leopard individual identification available via an artificial intelligence (AI) software interface, we first trained and evaluated image classification techniques for a convolutional neural network, pose invariant embeddings (PIE) (a triplet loss network), and compared the accuracy of PIE to that of the HotSpotter algorithm (a SIFT-based algorithm). Data were acquired from a curated library of free-ranging snow leopards taken in Afghanistan between 2012 and 2019 and from captive animals in zoos in Finland, Sweden, Germany, and the United States. We discovered several flaws in the initial PIE model, such as a small amount of background matching, that was addressed, albeit likely not fixed, using background subtraction (BGS) and left-right mirroring (LR) techniques which demonstrated reasonable accuracy (Rank 1: 74% Rank-5: 92%) comparable to the Hotspotter results (Rank 1: 74% Rank 2: 84%)The PIE BGS LR model, in conjunction with Hotspotter, yielded the following results: Rank-1: 85%, Rank-5: 95%, Rank-20: 99%. In general, our findings indicate that PIE BGS LR, in conjunction with HotSpotter, can classify snow leopards more accurately than using either algorithm alone. | ||||
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Call Number | SLN @ rakhee @ | Serial | 1723 | ||
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Author | Wahlberg, C. | ||||
Title | Autopsy findings and causes of death in captive snow leopards (Panthera uncia): a preliminary report | Type | Book Chapter | ||
Year | 1980 | Publication | International Pedigree Book of Snow Leopards | Abbreviated Journal | |
Volume | 2 | Issue | Pages | 205-217 | |
Keywords | Autopsy; Death; captive; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; panthera; panthera uncia; Panthera-uncia; uncia; Report; International; pedigree | ||||
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Publisher | Helsinki Zoo | Place of Publication | Helsinki | Editor | Blomqvist, L. |
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Notes | Approved | no | |||
Call Number | SLN @ rana @ 1095 | Serial | 998 | ||
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Author | Shi, K.; Jun, Z.F.S.; Zhigang, D.; Riordan, P.; MacDonald, D. | ||||
Title | Reconfirmation of snow leopards in Taxkurgan Nature Reserve, Xinjiang, China | Type | Journal Article | ||
Year | 2009 | Publication | Oryx | Abbreviated Journal | |
Volume | 43 | Issue | 2 | Pages | 169-170 |
Keywords | administration; Beijing; China; conservation; global; habitat; management; nature; presence; province; range; research; reserve; snow-leopard; snow-leopards; snow leopard; snow leopards; species; uncia; wildlife; Xinjiang | ||||
Abstract | China may hold a greater proportion of the global snow leopard Panthera uncia population than any other country, with the area of good quality suitable habitat, estimated at nearly 300,000 km2, comprising .50% of that available across the species' entire range. We can now reconfirm the presence of snow leopard in the Taxkurgan area of Xinjiang Province in north-west China after a period of 20 years. | ||||
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Publisher | Fauna & Flora International | Place of Publication | United Kingdom | Editor | |
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Notes | SHI KUN Institute of Wildlife Conservation and Management, Beijing Forestry University, China ZHU FUDE SHI JUN and DAI ZHIGANG Xinjiang Forestry Administration, China PHILIP RIORDAN and DAVID MACDONALD Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon, OX13 5QL, UK. E-mail philip.riordan@zoo.ox.ac.uk | Approved | no | ||
Call Number | SLN @ rana @ 1056 | Serial | 884 | ||
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Author | Thapa, K. | ||||
Title | Is their any correlation between abundance of blue sheep population and livestock depredation by snow leopards in the Phu Valley, Manang District, Annapurna Conservation Area? Final report | Type | Report | ||
Year | 2005 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-19 | ||
Keywords | abundance; blue; blue sheep; blue-sheep; sheep; population; livestock; livestock depredation; livestock-depredation; depredation; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; valley; Manang; annapurna; annapurna conservation area; Annapurna-Conservation-Area; conservation; area; Report; project; International; international snow leopard trust; International-Snow-Leopard-Trust; trust; program; Nepal | ||||
Abstract | This study was undertaken in the Phu valley of Manang district in the Annapurna Conservation Area, Nepal, Spring, 2004 and 2005. I used the Snow Leopard Management Information System (“second order” survey technique), to determine the relative abundance of snow leopards in delineated areas in Phu valley. Transects routes were plotted by randomly selected feasible landforms such as along ridgelines, cliff bases and river bluffs where snow leopards sign is likely to be found. Altogether, 16 transects (total length of 7.912 km) were laid down (mean transect length=0.495 km). They revealed, 54 sign sites (both relic and non-relic) and altogether 88 signs (72 scrapes, 11 feces, 3 scent mark, 2 pugmarks and 1 hair) were recorded (6.8 site/km and 11.1 signs/km). There were 61.1% non-relic and 38.9% relic sites. The density of snow leopards in Phu Valley may be 4-5 snow leopards/100 kmý.It was found that the Ghyo block had the highest sign density (13.6 mean sign item/km) and Phu block (9.8 mean sign item/km) and the lowest in Ngoru block (3.9 mean sign item/km.). For blue sheep, direct count method was applied from different appropriate vantage points (fixed-point count). I counted total individuals in each herd and classified all individuals whenever possible, using 8 X24 binocular and 15-60x spotting scope. A total 37 blue sheep herds and 1209 individuals were observed in 192.25 kmý of the study area (blue sheep density, 6.3 kmý). Average herd size was 32.68. Herd size varied from 1 to 103 animals (the largest so far recorded). The average sex ratio male to female for the entire survey area was 0.67. Recruitment rate was 47.13. The ratio of yearlings to adult female was 0.45. In Ghyo block had total 168 blue sheep (area, 44.08 km2 or 3.8/ km2 i.e. 137.2 kg/ kmý). Blue sheep density in Ngoru block showed 4.7/km2 (area, 65.47 km2). Highest density of blue sheep among three blocks was recorded in Phu block, 8.9/km2 (or 320 kg/km2) in its 82.70 km2 area. A standard questionnaire was designed, and interviews conducted for relevant information was collected on livestock depredation patterns (total household survey). Out of 33 households surveyed, 30 reported that they had livestock depredation by the snow leopard in 2004. Altogether 58 animals were reportedly lost to snow leopards (3.1% of the total mortality). Out of the estimated standing available biomass (1, 83,483kg) in the Phu valley at least 2220 kg or 1.3% of the total livestock biomass was consumed by snow leopards in the year of our study (2004). It was estimated that in the Phu valley annually 1.8 animals were lost per household to snow leopards. This means approx. Rs.413560 (US$ 5,908) is lost annually in the valley (US$ 179/household/annum). Ghyo block, had the highest animals loss (53.4%), followed by Phu block (36.2%) and Ngoru block (10.3%) to snow leopards. There is positive correlation among the densities of blue sheep, relative abundance of the snow leopard and livestock depredation. Blue sheep is the main prey species of the snow leopard in Phu valley and its conservation therefore matters to reduce livestock depredation. A general patterns appears here that shows that blue sheep (prey) abundance determine snow leopard (predator) abundance and that livestock depredation by snow leopards may be minimal where there is good population of blue sheep, and vice versa. |
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Notes | Project funded by International Snow Leopard Trust Small Grants Program, 2005. Annapurna Conservation Area Project, Pokhara, Nepal. | Approved | no | ||
Call Number | SLN @ rana @ 1078 | Serial | 959 | ||
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Author | Sloane, A.; Kelly, C.; McDavitt, S.; Marples, N. | ||||
Title | Big cats in captivity: a quantitative analysis of enrichment | Type | Journal Article | ||
Year | 1998 | Publication | Adv.Etho | Abbreviated Journal | |
Volume | 33 | Issue | Pages | 43 | |
Keywords | abnormal-behavior; behavior; captive-animal-care; endangered; threatened-species; zoos; enrichment; abnormal; captive; Animal; care; threatened; species; browse; 1280; study; big; big cats; Cats; cat; zoo; effects; Lions; lion; jaguar; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; behaviour; using; activity; activities; change; presence; enclosures; range; scent; cage; horse; hides; management | ||||
Abstract | Studies on three species of big cats at Dublin Zoo have led to firm conclusions about the effects of certain forms of enrichment, some of which will be presented here. Lions, jaguars, and snow leopards were studied over two years and their behaviours quantified using focal animal sampling during selected hours during daylight. By comparison of these activity budgets with and without the enrichments being present, it was possible to identify the exact behavioural changes caused by each enrichment method, and to quantify these changes. In this contribution we present results showing that the presence of a platform in both lion and jaguar enclosures dramatically reduced stereotypic pacing behaviour. We will demonstrate that the effects of short term enrichment devices may have a wide range of effects on behaviours which outlast the presence of the stimulus. For instance scents added to the cage, or food/play items such as horse hides, hidden fish or ice-blocks often reduce pacing and increase resting later in the day, even after the cats have ceased using the enrichment items. This reduction in pacing and increase in resting time often meant that the amount of the enclosure used per hour was actually reduced with the presence of new stimuli, as result opposite to what might have been expected. The results of these studies will be discussed in relation to effective animal management. | ||||
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Notes | WILDLIFE REVIEW ABSTRACTS (“Contributions to the International Symposium on Physiology and Ethology of Wild and Zoo Animals, Berlin, Germany, 7-10 October 1998”; Hofer, Heribert; Pitra, Christian; Hofmann, Reinhold R., editors). | Approved | no | ||
Call Number | SLN @ rana @ 349 | Serial | 897 | ||
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Author | Ming, M. | ||||
Title | Study on Snow Leopards in Xinjiang (Training Guide) | Type | Miscellaneous | ||
Year | 2004 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-25 | ||
Keywords | 5360; study; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; Xinjiang | ||||
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Notes | Training Guide supported by ISLT and XCF. In Chinese. | Approved | no | ||
Call Number | SLN @ rana @ 381 | Serial | 680 | ||
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Author | Andriuskevicius, A. | ||||
Title | Occurrance of Snow Leopards in the Soviet Union | Type | Journal Article | ||
Year | 1980 | Publication | International Pedigree Book of Snow Leopards | Abbreviated Journal | |
Volume | 2 | Issue | Pages | 59-69 | |
Keywords | 2290; area; areas; browse; distribution; park; parks; protected; protected-area; protected area; protected areas; refuge; reserve; reserves; Russia; snow-leopard; snow-leopards; snow leopard; snow leopards; soviet; Soviet-Union; soviet union; status; U.S.S.R.; union; Ussr | ||||
Abstract | Outlines status and distribution of snow leopard in USSR, including comments on reserves created for the species. | ||||
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Notes | Approved | no | |||
Call Number | SLN @ rana @ 51 | Serial | 73 | ||
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Author | Namgay, K. | ||||
Title | Snow Leopard and Prey Population Conservation in Bhutan | Type | Report | ||
Year | 2007 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-5 | ||
Keywords | 2000; 30; activities; activity; asia; Bhutan; China; conservation; dates; Dorji; field; government; habitat; habitats; India; International; International-Snow-Leopard-Trust; international snow leopard trust; Jigme; Jigme-Dorji; leopard; leopards; methods; national; National-park; national park; Nepal; Pakistan; park; plan; population; populations; prey; program; programs; project; region; regional; Report; Slims; snow; snow-leopard; snow-leopards; snow leopard; snow leopards; staff; status; strategy; Support; survey; surveys; techniques; training; trust; ungulate; us; using; wild; wildlife; work; workshop; world-wildlife-fund; world wildlife fund; Wwf | ||||
Abstract | Snow leopard conservation work in Bhutan dates back to 1999 and 2000 when the International Snow Leopard Trust-in collaboration with the Royal Government of Bhutan and World Wildlife Fund-initiated a training workshop. More than 30 government staff were trained in SLIMS survey techniques. As a part of the training exercise, a preliminary survey on snow leopard was also carried out using the SLIMS methods in Jigme Dorji Wangchuck National Park. Based on the survey results, we estimated there was a population of 100 snow leopards in the wild and 10,000 km2 of habitat. In 2005, World Wildlife Fund (WWF) organized the WWF/South Asia Regional Workshop on Snow leopard Conservation in Bhutan. Both regional (Bhutan, India, China, Nepal and Pakistan) and international experts revisited the snow leopard programs and developed a work plan for the overall conservation of the snow leopard in the region. This led to WWF's Regional Snow leopard Conservation Strategy. WWF is pleased to submit our final report to the International Snow Leopard Trust on the oneyear, $8,000 grant in support of Snow Leopard and Prey Population Conservation in Bhutan. With the support of the Snow Leopard Trust, we have made great strides towards achieving our goal for this project: To determine the current status of snow leopard and ungulate prey populations in prime snow leopard habitats. Major accomplishments and activities completed thanks to the generous support of the International Snow Leopard Trust include: Signed of a Terms of Reference between Royal Government, International Snow Leopard Trust – India, World Wildlife Fund and International Snow Leopard Trust -US; Developed a joint revised project work plan; and Purchased basic field supplies and equipment needed for the surveys planned. |
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Notes | Project funded by International Snow Leopard Trust Small Grants Program, 2006. Contact Thomas Dillon (202) 778-9766 phone or email Thomas.dillon@wwfus.org | Approved | no | ||
Call Number | SLN @ rana @ 1074 | Serial | 714 | ||
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