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Thapa, K., Jackson, R., Gurung, L, Acharya, H. B., Gurung, R. K., |
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Title |
Applying the double observer methodology for assessing blue sheep population size in Nar Phu valley, Annapurna Conservation Area, Nepal |
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2021 |
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Wildlife Biology |
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1-11 |
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blue sheep, density estimation, double observer counts, Nepal, Panthera uncia, prey abundance, Pseudois nayaur, snow leopard, viewshed mapping |
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This study was undertaken in spring, 2019 to assess the applicability of the double-observer survey method for estimating blue sheep Pseudois nayaur abundance in Nar-Phu valley of Manang District located in Annapurna Conservation Area of northern Nepal. Since counting large mammals in rugged mountain habitat poses a special challenge, we tested the efficacy of the double observer method for generating robust population estimates for this important protected area. The overall detection probability for observers (O1 and O2) was 0.94 and 0.91 for a total of 106 groups comprised of 2059 individual blue sheep. We estimated the area’s blue sheep population at 2070 (SE ± 168.77; 95% CI 2059–2405) for the 246.2 km2 of sampled habitat. We determined blue sheep to be widely distributed within the study area with a mean density of 8.4 individuals per km2 based on a total study area of 246.2 km2. We discuss demographic population structure and identify limitations when applying the double observer approach, along with recommending viewshed mapping for ensuring more robust density estimates of mountain-dwelling ungulates like blue sheep or ibex that inhabit extremely heterogeneous terrain which strongly influences sighting distances and overall animal detection rates. |
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SLN @ rakhee @ |
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1666 |
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Johansson, O., Agvaantseren, B., Jackson, R., Kachel, S., Kubanychbekov, Z., McCarthy, T., Mishra, C., Ostrowski, S., Kulenbekov, R., Rajabi, A. M., Subba, S. |
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Body measurements of free-ranging snow leopards across their range |
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2022 |
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Snow Leopard Reports |
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1 |
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1-6 |
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Body mass, body size, carnivore, morphology, Panthera uncia |
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We provide body measurements of snow leopards collected from 55 individuals sampled in five of the major mountain ranges within the species distribution range; the Altai, Hindu Kush, Himalayas, Pamirs and Tien Shan mountains. Snow leopards appear to be similarly sized across their distribution range with mean body masses of 36 kg and 42 kg for adult females and adult males, respectively. In contrast to other large felids, we found little variation in body size and body mass between the sexes; adult males were on average 5% longer and 15% heavier than adult females. |
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SLN @ rakhee @ |
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1711 |
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Hacker, C., Atzeni, L., Munkhtsog, B., Munkhtsog, B., Galsandorj, N., Zhang, Y., Liu, Y., Buyanaa, C., Bayandonoi, G., Ochirjav, M., Farrington, J. D., Jevit, M., Zhang, Y., Wu, L. Cong, W., Li, D., Gavette, C., Jackson, R., Janecka, J. E. |
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Genetic diversity and spatial structures of snow leopards (Panthera uncia) reveal proxies of connectivity across Mongolia and northwestern China |
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2022 |
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Landscape Ecology |
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1-19 |
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Admixture · Central Asia · Connectivity · Habitat Modeling · Landscape Genetics · Noninvasive Genetics · MEM · Spatial Structures |
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Understanding landscape connectivity and population genetic parameters is imperative for threatened species management. However, such information is lacking for the snow leopard (Panthera uncia). This study sought to explore hierarchical snow leopard gene flow patterns and drivers of genetic structure in Mongolia and China. A total of 97 individuals from across Mongolia and from the north-eastern edge of the Qinghai-Tibetan Plateau in Gansu Province to the middle of Qinghai Province in China were genotyped across 24 microsatellite loci. Distance-based frameworks were used to determine a landscape scenario best explaining observed genetic structure. Spatial and non-spatial methods were used to investigate fine-scale autocorrelation and similarity patterns as well as genetic structure and admixture. A genetic macro-division between populations in China and Mongolia was observed, suggesting that the Gobi Desert is a substantial barrier to gene flow. However, admixture and support for a resistance-based mode of isolation suggests connective routes that could facilitate movement. Populations in Mongolia had greater connectivity, indicative of more continuous habitat. Drivers of genetic structure in China were difficult to discern, and fine-scale sampling is needed. This study elucidates snow leopard landscape connectivity and helps to prioritize conservation areas. Although contact zones may have existed and occasional crossings can occur, establishing corridors to connect these areas should not be a priority. Focus should be placed on maintaining the relatively high connectivity for snow leopard populations within Mongolia and increasing research efforts in China. |
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1717 |
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Jackson, R. |
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Title |
Pakistan's Community-based Trophy Hunting Programs and Their Relationship to Snow Leopard Conservation |
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2004 |
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Pakistan; community-based; hunting; programs; program; Relationship; snow; snow leopard; snow-leopard; leopard; conservation; network |
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In June-July 2004, the Snow Leopard Conservancy (SLC) recently conducted field visits to three important snow leopard sites in Pakistan's Northern Areas: Hushey and Skoyo villages in Baltistan and the Khunjerab Village Organization (KVO) in Gojal. The purpose was to launch environmentally appropriate small-scale, village-based conservation and depredation alleviation initiatives aimed at protecting snow leopards, prey species, their habitats and associated mountain biodiversity, while benefiting humans at the same time. |
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For consideration by The Snow Leopard Network (SLN) Committee on Position Statements |
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SLN @ rana @ 1024 |
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472 |
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Ahlborn, G.; Jackson, R. |
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Title |
Marking in Wild Snow Leopards: A preliminary assesment |
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Miscellaneous |
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1987 |
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No. 13 |
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estrus; estrual-cycle; reserach; behavior; scrapes; sprays; Langu-Gorge; Langu; China; browse; 4800 |
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Islt |
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Seattle |
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English |
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Full Text at URLJournal Title: Snow Line |
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SLN @ rana @ 467 |
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36 |
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Bhatnagar, Y.V.; Stakrey, R.W.; Jackson, R. |
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A Survey of Depredation and Related Wildlife-Human Conflicts in Hemis National Park, Ladakh (India) |
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2000 |
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Snow Line |
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xvi |
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3 |
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Jammu; Kashmir; Ladakh; conflicts; herders; livestock; predator; prey; grazing; ungulates; economics; Hemis; browse; 4430 |
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Islt |
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Seattle |
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Full Text at URLJournal Title: Snowline |
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SLN @ rana @ 431 |
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136 |
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Jack; Jill; Jackson, P.; Wharton, D.; Jackson, R. |
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Title |
Snow leopard, Ucia uncia |
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Slims; status; distribution; habitat; diet; China; Mongolia; Kyrgyzstan; discription; range; conservation; behavior; browse; 4040 |
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Full Text at URL |
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SLN @ rana @ 4 |
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426 |
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Jackson, R.; Fox, J.L. |
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Snow Leopard and Prey Species Workshop in Bhutan |
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Jigme-Dorji; Bhutan; workshop; Slims; blue-sheep; tourism; Islt; parks; reserves; protected-areas; tracks; surveys; international snow leopard trust; blue; sheep; browse; 4070 |
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Full Text at URL |
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SLN @ rana @ 6 |
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431 |
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Jackson, R.; Ahlborn, G. |
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Himalayan snow leopard project: final progress report, phase 1 |
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1986 |
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Himalayan; field-study; Nepal; browse; field; study; 3360; Report; national; Jackson |
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Report to National Geographic Society. Washington D.C. 94 pp. Report not available but is superceded by Rodney Jackson's PhD thesis:Home Range, Movements and Habitat use of Snow Leopard (Uncia uncia) in Nepal (1996). Thesis is available in this bibliography. |
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SLN @ rana @ 94 |
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436 |
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Jackson, R.; Ahlborn, G. |
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A high altitude survey of the Hongu valley with special emphasis on snow leopard |
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1987 |
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Hongu; Nepal; habitat; distribution; browse; 2360 |
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Unpublished report submitted to The Mountain Institute and Department of National Parks and Wildlife Conservation, Kathmandu, Nepal. Date of Copyright: 1987 |
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SLN @ rana @ 109 |
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438 |
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