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Author (down) Ulziibadrakh, T., Uudus, B., Lkhagvajav, P., Alexander, J. S., Johansson, O., Sharma, K., Samelius, G.
Title Variation in plant composition along a gradient of increasing distance from wells in a mountain steppe in southern Mongolia Type Journal Article
Year 2023 Publication Snow Leopard Reports Abbreviated Journal
Volume Issue Pages 10-16
Keywords desert steppe, livestock grazing, plant composition, South Gobi
Abstract Habitat degradation and heavy grazing by livestock are common conservation challenges across the steppes of Mongolia and Central Asia. Livestock grazing patterns are generally not uniform and are typically greater near campsites and watering holes. In this study, we examined how plant composition in a mountain steppe in southern Mongolia varied along a gradient of increasing distance from wells. We found that the cover and average height of Ephedra prezewalskii increased with increasing distance from the wells whereas soil chemistry and the other variables of plant composition that we examined were similar along the gradient of increasing distance from the wells. These results suggest relatively limited impact of livestock grazing on plant composition in our study. However, our study was limited in space and time and further studies are needed to understand the impact of livestock grazing in this mountain steppe in southern Mongolia.
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Call Number SLN @ rakhee @ Serial 1731
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Author (down) Tallian, A., Mattisson, J., Samelius, G., Odden, J., Mishra, C., Linnell, J. D. C., Lkhagvajav, P., Johansson, O.
Title Wild versus domestic prey: Variation in the kill-site behavior of two large felids Type Journal Article
Year 2023 Publication Global Ecology and Conservation Abbreviated Journal
Volume 47 Issue e026750 Pages 1-13
Keywords Eurasian lynx, Handling time, Landscape, Livestock, Predation, Snow leopard
Abstract Livestock depredation is an important source of conflict for many terrestrial large carnivore

species. Understanding the foraging behavior of large carnivores on domestic prey is therefore

important for both mitigating conflict and conserving threatened carnivore populations. Handling

time is an important, albeit often overlooked, component of predatory behavior, as it directly

influences access to food biomass, which can affect predator foraging efficiency and subsequent

kill rates. We used long-term data on snow leopards (Panthera uncia) in Mongolia (Asia) and

Eurasian lynx (Lynx lynx) in Norway (Europe) to examine how large carnivore foraging patterns

varied between domestic and wild prey, and how the different landscape characteristics affected

those patterns. Our results suggest handling time was generally shorter for domestic compared to

wild prey. For snow leopards, rugged terrain was linked to increased handling time for larger

prey. For lynx, handling time increased with terrain ruggedness for domestic, but not wild, prey,

and was greater in closed compared to open habitats. There were also other differences in snow

leopard and lynx foraging behavior, e.g., snow leopards also stayed longer at, and remained closer

to, their kill sites than lynx. Shorter handling time suggests that felids may have utilized domestic

prey less effectively than wild prey, i.e., they spent less time consuming their prey. This could a)

result in an energetic or fitness cost related to decreased felid foraging efficiency caused by the

risk of anthropogenic disturbance, or b) exacerbate conflict if reduced handling time associated

with easy prey results in increased livestock depredation.
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Call Number SLN @ rakhee @ Serial 1737
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Author (down) Solari, K. A., Morgan, S., Poyarkov, A. D., Weckworth, B., Samelius, G., Sharma, K., Ostrowski, S., Ramakrishnan, U., Kubanychbekov, Z., Kachel, S., Johansson, O., Lkhagvajav, P., Hemmingmoore, H., Alexandrov, D. Y., Bayaraa, M., Grachev, A., Korablev, M. P., Hernandez-Blanco, J. A., Munkhtsog, B., Rosenbaum, B., Rozhnov, V. V., Rajabi, A. M., Noori, H., Armstrong, E. E., Petrov, D. A.
Title Extreme in Every Way: Exceedingly Low Genetic Diversity in Snow Leopards Due to Persistently Small Population Size Type Journal Article
Year 2023 Publication bioRxiv Abbreviated Journal
Volume Issue Pages 1-24
Keywords
Abstract Snow leopards (Panthera uncia) serve as an umbrella species whose conservation benefits their high-elevation Asian habitat. Their numbers are believed to be in decline due to numerous Anthropogenic threats; however, their conservation is hindered by numerous knowledge gaps. They are the least studied genetically of all big cat species and little is known about their historic population size and range, current population trends, or connectivity across their range. Here, we use whole genome sequencing data for 41 snow leopards (37 newly sequenced) to assess population connectivity, historic population size, and current levels of genetic diversity. Among our samples, we find evidence of a primary genetic divide between the northern and southern part of the range around the Dzungarian Basin and a secondary divide south of Kyrgyzstan around the Taklamakan Desert. However, we find evidence of gene flow, suggesting that barriers between these groups are permeable. Perhaps most noteworthy, we find that snow leopards have the lowest genetic diversity of any big cat species, likely due to a persistently small population size throughout their evolutionary history. Without a large population size or ample standing genetic variation to help buffer them from any forthcoming Anthropogenic challenges, snow leopard persistence may be more tenuous than currently appreciated.
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Call Number SLN @ rakhee @ Serial 1739
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Author (down) Sharma, K., Bayrakcismith, R., Tumursukh, L., Johansson, O., Sevger, P., McCarthy, T., Mishra, C.
Title Vigorous Dynamics Underlie a Stable Population of the Endangered Snow Leopard Panthera uncia in Tost Mountains, South Gobi, Mongolia Type Journal Article
Year 2014 Publication Plos One Abbreviated Journal
Volume 9 Issue 7 Pages
Keywords
Abstract Population monitoring programmes and estimation of vital rates are key to understanding the mechanisms of population growth, decline or stability, and are important for effective conservation action. We report, for the first time, the population trends and vital rates of the endangered snow leopard based on camera trapping over four years in the Tost Mountains, South Gobi, Mongolia. We used robust design multi-season mark-recapture analysis to estimate the trends in abundance, sex ratio, survival probability and the probability of temporary emigration and immigration for adult and young snow leopards. The snow leopard population remained constant over most of the study period, with no apparent growth (l = 1.08+20.25). Comparison of model results with the ‘‘known population’’ of radio-collared snow leopards suggested

high accuracy in our estimates. Although seemingly stable, vigorous underlying dynamics were evident in this population, with the adult sex ratio shifting from being male-biased to female-biased (1.67 to 0.38 males per female) during the study. Adult survival probability was 0.82 (SE+20.08) and that of young was 0.83 (SE+20.15) and 0.77 (SE +20.2) respectively, before and after the age of 2 years. Young snow leopards showed a high probability of temporary emigration and immigration (0.6, SE +20.19 and 0.68, SE +20.32 before and after the age of 2 years) though not the adults (0.02 SE+20.07). While the current female-bias in the population and the number of cubs born each year seemingly render the study population safe, the vigorous dynamics suggests that the situation can change quickly. The reduction in the proportion of

male snow leopards may be indicative of continuing anthropogenic pressures. Our work reiterates the importance of monitoring both the abundance and population dynamics of species for effective conservation.
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Call Number SLN @ rakhee @ Serial 1416
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Author (down) Samelius, G., Suryawanshi, K., Frank, J., Agvaantseren, B., Baasandamba, E., Mijiddorj, T., Johansson, O., Tumursukh, L., Mishra, C.
Title Keeping predators out: testing fences to reduce livestock depredation at night-time corrals Type Journal Article
Year 2020 Publication Oryx Abbreviated Journal
Volume Issue Pages 1-7
Keywords Canis lupus, carnivore conservation, coexistence, conflict mitigation, conservation conflict, livestock depreda- tion, Panthera uncia, preventative measure
Abstract Livestock depredation by large carnivores is a global conservation challenge, and mitigation measures to reduce livestock losses are crucial for the coexistence of large carnivores and people. Various measures are employed to reduce livestock depredation but their effectiveness has rarely been tested. In this study, we tested the effectiveness of tall fences to reduce livestock losses to snow leopards Panthera uncia and wolves Canis lupus at night-time corrals at the winter camps of livestock herders in the Tost Mountains in southern Mongolia. Self-reported livestock losses at the fenced corrals were reduced from a mean loss of 3.9 goats and sheep per family and winter prior to the study to zero losses in the two winters of the study. In contrast, self-reported livestock losses in winter pastures, and during the rest of the year, when herders used different camps, remained high, which indicates that livestock losses were reduced because of the fences, not because of temporal variation in predation pressure. Herder attitudes towards snow leopards were positive and remained positive during the study, whereas attitudes towards wolves, which attacked livestock also in summer when herders moved out on the steppes, were negative and worsened during the study. This study showed that tall fences can be very effective at reducing night-time losses at corrals and we conclude that fences can be an important tool for snow leopard conservation and for facilitating the coexistence of snow leopards and people.
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Notes Approved no
Call Number SLN @ rakhee @ Serial 1492
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Author (down) 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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Notes Approved no
Call Number SLN @ rana @ Serial 1151
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Author (down) Johansson, O., Ullman, K., Lkhagvajav, P., Wiseman, M., Malmsten, J., Leijon, M.
Title Detection and Genetic Characterization of Viruses Present in Free-Ranging Snow Leopards Using Next-Generation Sequencing Type Journal Article
Year 2020 Publication Frontiers in Veterinary Science Abbreviated Journal
Volume 7 Issue 645 Pages 1-9
Keywords snow leopard, free-ranging, virome, Mongolia, rectal swabs, next-generating sequencing, Panthera unica
Abstract Snow leopards inhabit the cold, arid environments of the high

mountains of South and Central Asia. These living conditions likely

affect the abundance and composition of microbes with the capacity to

infect these animals. It is important to investigate the microbes that

snow leopards are exposed to detect infectious disease threats and

define a baseline for future changes that may impact the health of this

endangered felid. In this work, next-generation sequencing is used to

investigate the fecal (and in a few cases serum) virome of seven snow

leopards from the Tost Mountains of Mongolia. The viral species to which

the greatest number of sequences reads showed high similarity was

rotavirus. Excluding one animal with overall very few sequence reads,

four of six animals (67%) displayed evidence of rotavirus infection. A

serum sample of a male and a rectal swab of a female snow leopard

produced sequence reads identical or closely similar to felid

herpesvirus 1, providing the first evidence that this virus infects snow

leopards. In addition, the rectal swab from the same female also

displayed sequence reads most similar to feline papillomavirus 2, which

is the first evidence for this virus infecting snow leopards. The rectal

swabs from all animals also showed evidence for the presence of small

circular DNA viruses, predominantly Circular Rep-Encoding

Single-Stranded (CRESS) DNA viruses and in one case feline anellovirus.

Several of the viruses implicated in the present study could affect the

health of snow leopards. In animals which are under environmental

stress, for example, young dispersing individuals and lactating females,

health issues may be exacerbated by latent virus infections.
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Notes Approved no
Call Number Serial 1612
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Author (down) Johansson, O., Samelius, G., Wikberg, E, Chapron, G., Mishra, C., Low, M
Title Identification errors in camera- trap studies result in systematic population overestimation Type Journal Article
Year 2020 Publication Scientific Reports Abbreviated Journal
Volume 10 Issue 6393 Pages 1-10
Keywords
Abstract Reliable assessments of animal abundance are key for successful conservation of endangered species. For elusive animals with individually-unique markings, camera-trap surveys are a benchmark standard for estimating local and global population abundance. Central to the reliability of resulting abundance estimates is the assumption that individuals are accurately identified from photographic captures. To quantify the risk of individual misidentification and its impact on population abundance estimates we performed an experiment under controlled conditions in which 16 captive snow leopards (Panthera uncia) were camera-trapped on 40 occasions and eight observers independently identified individuals and recaptures. Observers misclassified 12.5% of all capture occasions, resulting in systematically inflated population abundance estimates on average by one third (mean ± SD = 35 ± 21%). Our results show that identifying individually-unique individuals from camera-trap photos may not be as reliable as previously believed, implying that elusive and endangered species could be less abundant than current estimates indicate.
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Notes Approved no
Call Number SLN @ rakhee @ Serial 1496
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Author (down) Johansson, O., Rauset, G. R., Samelius, G., McCarthy, T., Andren, H., Tumursukh, L., Mishra, C.
Title Land sharing is essential for snow leopard conservation Type Journal Article
Year 2016 Publication Biological Conservation Abbreviated Journal
Volume Issue 203 Pages 1-7
Keywords Home range, LoCoH, Mongolia, Panthera uncial, Protected areas, Land sparing
Abstract Conserving large carnivores in an increasingly crowded planet raises difficult challenges. A recurring debate is whether large carnivores can be conserved in human used landscapes (land sharing) or whether they require specially designated areas (land sparing). Here we show that 40% of the 170 protected areas in the global range of the snow leopard (Panthera uncia) are smaller than the home range of a single adult male and only 4– 13% are large enough for a 90% probability of containing 15 or more adult females. We used data from 16 snow leopards equipped with GPS collars in the Tost Mountains of South Gobi, Mongolia, to calculate home range size and overlap using three different estimators: minimum convex polygons (MCP), kernel utility distributions (Kernel), and local convex hulls (LoCoH). Local convex hull home ranges were smaller and included lower proportions of unused habitats compared to home ranges based on minimum convex polygons and Kernels. Intra-sexual home range overlapwas low, especially for adult males, suggesting that snowleopards are territorial. Mean home range size based on the LoCoH estimates was 207 km2 ± 63 SD for adult males and 124 km2 ± 41 SD for adult females. Our estimates were 6–44 times larger than earlier estimates based on VHF technology when comparing similar estimators, i.e. MCP. Our study illustrates that protected areas alone will not be able to conserve predatorswith large home ranges and conservationists and managers should not restrict their efforts to land sparing.
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Call Number SLN @ rakhee @ Serial 1446
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Author (down) Johansson, O., Nyam, E., Lkhagvajav, P., Alexander, J. A., Samelius, G.
Title Predation Patterns and Hunting Behaviour of Snow Leopards: Insights from an Ibex Hunt Type Journal Article
Year 2023 Publication Snow Leopard Reports Abbreviated Journal
Volume Issue Pages 6-9
Keywords ambush, Capra sibirica, kill site, mountain, Panthera uncia
Abstract The hunting behaviours of the snow leopard (Panthera uncia) are poorly understood. In this note, we describe the successful hunt of an adult male ibex (Capra sibirica) by a known male snow leopard in Tost Mountains, Mongolia. The hunt started in a mountain slope close to three large boulders and progressed downhill for 115 m until it concluded at the bottom of a drainage. By comparing the habitat where the ibex was killed to the kill sites of 158 ibex and 17 argali (Ovis ammon) that were killed by GPS-collared snow leopards, we demonstrate that the majority (62%) of these kills occurred in drainages. We propose that in successful hunts, snow leopards commonly ambush from above, causing prey individuals to typically flee downhill. Thereby the prey maintain their momentum and it is not until they are slowed down upon reaching the bottom of the drainage that the snow leopards are able to subdue them.
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Notes Approved no
Call Number SLN @ rakhee @ Serial 1730
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