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Author | Durbach, I., Borchers, D., Sutherland, C., Sharma, K. | ||||
Title | Fast, flexible alternatives to regular grid designs for spatial capture–recapture. | Type | Research Article | ||
Year | 2020 | Publication | Methods in Ecology and Evolution | Abbreviated Journal | |
Volume | Issue | Pages | 1-13 | ||
Keywords | camera trap, population ecology,sampling, spatial capture-recapture, surveys | ||||
Abstract | Spatial capture–recapture (SCR) methods use the location of detectors (camera traps, hair snares and live-capture traps) and the locations at which animals were detected (their spatial capture histories) to estimate animal density. Despite the often large expense and effort involved in placing detectors in a landscape, there has been relatively little work on how detectors should be located. A natural criterion is to place traps so as to maximize the precision of density estimators, but the lack of a closed-form expression for precision has made optimizing this criterion computationally demanding. 2. Recent results by Efford and Boulanger (2019) show that precision can be well approximated by a function of the expected number of detected individuals and expected number of recapture events, both of which can be evaluated at low computational cost. We use these results to develop a method for obtaining survey designs that optimize this approximate precision for SCR studies using count or binary proximity detectors, or multi-catch traps. 3. We show how the basic design protocol can be extended to incorporate spatially varying distributions of activity centres and animal detectability. We illustrate our approach by simulating from a camera trap study of snow leopards in Mongolia and comparing estimates from our designs to those generated by regular or optimized grid designs. Optimizing detector placement increased the number of detected individuals and recaptures, but this did not always lead to more precise density estimators due to less precise estimation of the effective sampling area. In most cases, the precision of density estimators was comparable to that obtained with grid designs, with improvement in some scenarios where approximate CV(¬D) < 20% and density varied spatially. 4. Designs generated using our approach are transparent and statistically grounded. They can be produced for survey regions of any shape, adapt to known information about animal density and detectability, and are potentially easier and less costly to implement. We recommend their use as good, flexible candidate designs for SCR surveys when reasonable knowledge of model parameters exists. We provide software for researchers to construct their own designs, in the form of updates to design functions in the r package oSCR. |
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Notes | Approved | no | |||
Call Number | Serial | 1618 | |||
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Author | Ming, M.; Yun, G.; Bo, W. | ||||
Title | Man & the Biosphere: The special series for the conservation of Snow Leopards in China | Type | Journal | ||
Year | 2008 | Publication | Man & the Biosphere | Abbreviated Journal | |
Volume | 54 | Issue | 6 | Pages | 1-80 |
Keywords | conservation; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; China; Chinese; national; 80; 200; endangered; McCarthy; awareness; action; surveys; survey; Tomur; mountain; Kunlun; mountains; Xinjiang; ecology; enterprises; Mongolia; Bayarjargal; 180; flagship-species; species; ecosystems; ecosystem; photography; Tianshan Mountains; attack; livestock; home; plateau; 30; snow-leopard-enterprises; 7080 | ||||
Abstract | The Chinese magazine <Man & the Biosphere> (Series No. 54, No. 6, 2008) -- A special series for the conservation of Snow Leopards was published by the Chinese National Committee for Man & the Biosphere in 15th December 2008. It is about 80 pages including ten articles with 200 color pictures. The special editors of this issue are the experts from SLT/XCF Prof. MaMing, Mrs. Ge Yun and Mr. Wen Bo. The first paper is “A King of Snow Peaks, Another Endangered Flagship Species” by Dr. Thomas McCarthy, Dr. Urs Breitenmmoser and Dr. Christine Breitenmoser-Wursten (Page 1-1). Another paper “ Conservation : Turning Awareness to Action ” is also from Dr. Thomas McCarthy (Pages from 6-17). There are four articles including the diary and story of the Surveys in Tomur Mountain and Kunlun Mountains written by Prof. MaMing, Mr. XuFeng, Miss Chen Ying and Miss Cheng Yun from the Xinjiang Snow Leopard Group and XCF, the Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences. The last is “Snow Leopard Enterprises ” -- A Story from Mongolia by Mrs. Jennifer Snell Rullman and Mrs. Agvaantseren Bayarjargal (Bayara). It is a very useful copy for the conservation in China. Cited as: Ma Ming, GeYun and WenBo (Special editors of this issue). 2008. The special series for the conservation of Snow Leopards in China. Man & the Biosphere 2008(6): 1-80. Contents 1, A king of snow peaks, another endangered flagship species (Synopsis) ------------- 1-1 The contents --------------------------------------------- ( pages from 2-3 ) 2, Protecting Snow Leopard means protecting a healthy eco-systems -------------- 4-5 3, Conservation: Turning awareness into action -------------- 6-17 4, Chinese Snow Leopard Team goes into action -------------- 18-25 5, A diary of infrared photography -------------- 26-35 6, Why have the snow leopards in the Tianshan Mountains begun to attack livestock? --- 36-43 7, The mystery of the Snow Leopards coming down the Tianshan Mountains ----------- 44-45 8, Snow leopards secluded Home on the Plateau ------------- 46-59 9, He saw Snow Leopards 30 years ago ------------- 60-69 10, Snow Leopard Enterprises -- A story from Mongolia ------------- 70-80 |
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Notes | Articles are posted individually in the bibliography. Please look up articles by author. In Chinese. | Approved | no | ||
Call Number | SLN @ rana @ 977 | Serial | 684 | ||
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Author | Jackson, R.; Hunter, D.O. | ||||
Title | Snow Leopard Survey and Conservation Handbook (2nd Edition) | Type | Book Whole | ||
Year | 1995 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | |||
Keywords | surveys; survey; transect; field-study; browse; field study; field; study; 2790 | ||||
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Publisher | ISLT and National Biological Survey | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | SLN @ rana @ 281 | Serial | 454 | ||
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Author | Fox, J.L. | ||||
Title | A review of the status and ecology of the snow leopard (Panthera uncia) | Type | Miscellaneous | ||
Year | 1989 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | |||
Keywords | status; ecology; distribution; browse; behavior; Russia; China; Mongolia; Soviet-Union; Pakistan; India; Nepal; Afganastan; Bhutan; mating; sexual-behavior; research; surveys; scrapes; sprays; habitat; 2050 | ||||
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Notes | Full Text at URL | Approved | no | ||
Call Number | SLN @ rana @ 137 | Serial | 294 | ||
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Author | Wangchuk, R.; Jackson, R. | ||||
Title | A Community-based Approach to Mitigating Livestock-Wildlife Conflict in Ladakh, India | Type | Report | ||
Year | 2009 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-9 | ||
Keywords | community-based; approach; conflict; Ladakh; India; livestock; livestock depredation; livestock-depredation; depredation; snow; snow leopard; snow-leopard; leopard; wolf; wolves; Himalayan; region; Jackson; kibber; Kibber Wildlife Sanctuary; wildlife; sanctuary; sanctuaries; loss; us; villagers; predation; establishment; surveys; survey; number; change; Animal; animal-husbandry; husbandry; system; 2000 | ||||
Abstract | Livestock depredation by snow leopard and wolf is widespread across the Himalayan region (Jackson et al. 1996, Jackson and Wangchuk 2001; Mishra 1997, Oli et al 1994). For example, in India's Kibber Wildlife Sanctuary, Mishra (1997) reported losses amounting to 18% of the livestock holdings and valued at about US $138 per household. The villagers claimed predation rates increased after establishment of the sanctuary, but surveys indicated a dramatic increase in livestock numbers accompanying changes in animal husbandry systems (Mishra 2000). |
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Notes | Approved | no | |||
Call Number | SLN @ rana @ 1014 | Serial | 1005 | ||
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Author | ud Din, J. | ||||
Title | Assessing the Status of Snow Leopard in Torkhow Valley, District Chitral, Pakistan: Final Technical Report | Type | Report | ||
Year | 2008 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-16 | ||
Keywords | status; snow; snow leopard; snow-leopard; leopard; valley; chitral; Pakistan; Report; study; prey; Base; conflict; threats; threat; wildlife; sign; transect; surveys; survey; Slims; Data; number; snow leopards; snow-leopards; leopards; Animals; Animal; population; livestock; livestock depredation; livestock-depredation; depredation; area; Case; ungulates; ungulate; Himalayan; himalayan ibex; ibex; rut; using; prey species; prey-species; species; marmot; game; birds; carnivores; carnivore; wolf; wolves; jackal; fox; survival; retaliatory; retaliatory killing; retaliatory-killing; killing; poisoning; poaching; loss; habitat; habitat degradation; habitat-degradation; degradation; grazing; collection; awareness; Gis; map; staff; field; training; conservation; community; distribution; resource; project; network; program | ||||
Abstract | This study was aimed at assessing the status of Snow leopard, its major prey base, and the extent of human-Snow leopard conflict and major threats to the wildlife in north Chitral (Torkhow valley) Pakistan. Snow leopard occurrence was conformed through sign transect surveys i.e. SLIMS. Based on the data collected the number of Snow leopards in this survey block (1022 Kmý) is estimated to be 2-3 animals. Comparing this estimate with the available data from other parts of the district the population of snow leopard in Chitral district was count to be 36 animals. Livestock depredation reports collected from the area reflect the existence of human-snow leopard conflict and 138 cases were recorded affecting 102 families (in a period of eight years, 2001-2008). Ungulates (Himalayan Ibex) rut season surveys were conducted in coordination with NWFP Wildlife department. A total of 429 animals were counted using direct count (point method) surveys. Other snow leopard prey species recorded include marmot, hare, and game birds. Signs of other carnivores i.e. wolf, jackal, and fox were also noticed. Major threats to the survival of wildlife especially snow leopard reckoned include retaliatory killing (Shooting, Poisoning), poaching, loss of natural prey, habitat degradation (over grazing, fodder and fuel wood collection), lack of awareness, and over population. GIS map of the study area was developed highlighting the area searched for Snow leopard and its prey species. Capacity of the Wildlife Department staff was built in conducting SLIMS and ungulate surveys through class room and on field training. Awareness regarding the importance of wildlife conservation was highlighted to the students, teachers and general community through lectures and distribution of resource materials developed by WWF-Pakistan. | ||||
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Notes | Project funded by Snow Leopard Network's Snow Leopard Conservation Grant Program. | Approved | no | ||
Call Number | SLN @ rana @ 1065 | Serial | 978 | ||
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Author | Khan, A. | ||||
Title | Snow Leopard Occurrence in Mankial Valley, Swat: Final report | Type | Report | ||
Year | 2004 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-17 | ||
Keywords | snow; snow leopard; snow-leopard; leopard; valley; Report; project; International; international snow leopard trust; International-Snow-Leopard-Trust; trust; program; ecosystem; habitat; species; plants; plant; Animals; Animal; birds; research; action; study; survey; Support; Islt; community; Organization; surveys; winter; information; local; sign; pugmarks; feces; scrapes; scrape; prey; prey species; prey-species; recent; population; markhor; hunting; Culture; Pressure; areas; area; feeding; livestock; burning; decline | ||||
Abstract | Mankial is a sub-valley of the Swat Kohistan. Temperate ecosystem of the valley is intact to a greater extent, which provides habitat to a variety of species of plants, animals and birds. Snow leopard is reported from the valley. To confirm its occurrence, the HUJRA (Holistic Understanding for Justified Research and Action), conducted the study titled “Snow Leopard Survey in Mankial Valley, district Swat, NWFP”. The author provided technical support, while ISLT (The International Snow Leopard Trust) funded the project under its small grants program. The World Wide Fund for Nature-Pakistan (WWF-Pakistan) and the Mankial Community Organization (MCO) facilitated surveys under the project. Surveys revealed that Snow leopard visits parts of the Mankial valley in winter months. Information from the local community shows that Snow leopard remains in the Serai (an off-shoot of the Mankial Valley) from early winter to early spring. Intensive surveys of the prime snow leopard winter habitat in the valley found several snow leopard signs including pugmarks, feces, and scrapes. The study also found occurrence of prey species through indirect evidence though. However, information from the local community confirmed that in the recent past there was a good population of markhor in the valley, which is now reduced to less than 50, mostly due to hunting and habitat disturbance. Hunting is part of the local culture and lifestyle. During winter months hunting pressure is low, as most of the local community migrates to warmer plain areas than Mankial Valley. However, those who live in the area lop oak branches for feeding their livestock and cut trees for burning, in addition to hunting prey species of snow leopard. This has resulted in stunted oak vegetation in most of the lower reaches of the valley and decline of the markhor population. | ||||
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Notes | Project funded by International Snow Leopard Trust Small Grants Program, 2003. | Approved | no | ||
Call Number | SLN @ rana @ 1069 | Serial | 530 | ||
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Author | Jiang, Z. | ||||
Title | Snow leopards in the Dulan International Hunting Ground, Qinghai, China | Type | Report | ||
Year | 2005 | Publication | Abbreviated Journal | ||
Volume | Issue | Pages | 1-8 | ||
Keywords | snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; International; hunting; Qinghai; China; project; international snow leopard trust; International-Snow-Leopard-Trust; trust; program; surveys; survey; mountains; mountain; province; transect; study; area; transects; pug; pug marks; pug-marks; marks; scrapes; scrape; density; densities; wild; ungulates; ungulate; region; camera; environment; photo; capture; population; population size; population-size; Animals; Animal; 20; livestock; Human; attitudes; attitude; tibetan; 30; nature; reserve; uncia; Uncia uncia; Uncia-uncia; species; snow line; snow-line; endemic; alpine; central; Central Asia; asia; countries; country; fox; range; areas; Xinjiang; inner; Inner-Mongolia; Mongolia; Tibet; gansu; Sichuan; habitat; protection; nature reserves; reserves; cat; populations; domestic; laws; law; field; field surveys; field survey; field-surveys; field-survey; Kunlun; distribution; survival; status; Data; conservation | ||||
Abstract | From March to May, 2006œªwe conducted extensive snow leopard surveys in the Burhanbuda Mountain Kunlun Mountains, Qinghai Province, China. 32 linear transect of 5~15 km each, which running through each vegetation type, were surveyed within the study area. A total of 72 traces of snow leopard were found along 4 transects (12.5% of total transects). The traces included pug marks or footprints, scrapes and urine marks. We estimated the average density of wild ungulates in the region was 2.88ñ0.35 individuals km-2(n=29). We emplaced 16 auto2 trigger cameras in different environments and eight photos of snow leopard were shot by four cameras and the capture rate of snow leopard was 71.4%. The minimum snow leopard population size in the Burhanbuda Mountain was two, because two snow leopards were phototrapped by different cameras at almost same time. Simultaneously, the cameras also shot 63 photos of other wild animals, including five photos are unidentified wild animals, and 20 photos of livestock. We evaluated the human attitudes towards snow leopard by interviewing with 27 Tibetan householders of 30 householders live in the study area. We propose to establish a nature reserve for protecting and managing snow leopards in the region. Snow leopard (Uncia uncia) is considered as a unique species because it lives above the snow line, it is endemic to alpines in Central Asia, inhabiting in 12 countries across Central Asia (Fox, 1992). Snow leopard ranges in alpine areas in Qinghai, Xinjiang, Inner Mongolia, Tibet, Gansu and Sichuan in western China (Liao, 1985, 1986; Zhou, 1987; Ma et al., 2002; Jiang & Xu, 2006). The total population and habitat of snow leopards in China are estimated to be 2,000~2,500 individuals and 1,824,316 km2, only 5% of which is under the protection of nature reserves. The cat's current range is fragmented (Zou & Zheng, 2003). Due to strong human persecutions, populations of snow leopards decreased significantly since the end of the 20th century. Thus, the snow leopards are under the protection of international and domestic laws. From March to May, 2006, we conducted two field surveys in Zhiyu Village, Dulan County in Burhanbuda Mountain, Kunlun Mountains, China to determine the population, distribution and survival status of snow leopards in the area. The aim of the study was to provide ecologic data for snow leopard conservation. |
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Notes | Project funded by International Snow Leopard Trust Small Grants Program. | Approved | no | ||
Call Number | SLN @ rana @ 1068 | Serial | 493 | ||
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Author | Jackson, R.; Roe, J.; Wangchuk, R.; Hunter, D. | ||||
Title | Camera-Trapping of Snow Leopards | Type | Journal Article | ||
Year | 2005 | Publication | Cat News | Abbreviated Journal | |
Volume | 42 | Issue | Spring | Pages | 19-21 |
Keywords | camera trapping; snow; snow leopards; snow leopard; snow-leopards; snow-leopard; leopards; leopard; felids; tigers; tiger; techniques; surveys; survey; information; factor; marking; behavior; Ahlborn; Jackson; habitat; status; range; census; India; Hemis; High; national; national park; National-park; park; Ladakh; leh | ||||
Abstract | Solitary felids like tigers and snow leopards are notoriously difficult to enumerate, and indirect techniques like pugmark surveys often produce ambiguous information that is difficult to interpret because many factors influence marking behavior and frequency (Ahlborn & Jackson 1988). Considering the snow leopard's rugged habitat, it is not surprising then that information on its current status and occupied range is very limited. We adapted the camera-trapping techniques pioneered by Ullas Karanth and his associates for counting Bengal tigers to the census taking of snow leopards in the Rumbak watershed of the India's Hemis High Altitude National Park (HNP), located in Ladakh near Leh (76ø 50' to 77ø 45' East; 33ø 15' to 34ø 20'North). | ||||
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Call Number | SLN @ rana @ 1017 | Serial | 475 | ||
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Author | International Snow Leopard Trust | ||||
Title | Assessing Presence, relative abundance and habitat of snow leopards and their prey: a handbook of field techniques | Type | Miscellaneous | ||
Year | 1992 | Publication | Abbreviated Journal | ||
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Keywords | habitat; surveys; methods; field-techniques; assessment; prey; browse; field techniques; field; techniques; 2700 | ||||
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Notes | Seattle, Washington. Out of date; no longer in circulation. | Approved | no | ||
Call Number | SLN @ rana @ 197 | Serial | 405 | ||
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