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Suryawanshi, K.R.; Bhatnagar, Y.; Mishra, C. |
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Title |
Why should a grazer browse? Livestock impact on winter resource use by bharal Pseudois nayaur
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Journal Article |
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2009 |
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Oecologia |
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1-10 |
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browse; livestock; impact; winter; resource; use; bharal; Pseudois; pseudois nayaur; Pseudois-nayaur; nayaur; diet; variation; diets; conservation; Media; study; decline; areas; area; grazing; Pressure; plants; plant; sign; feeding; location; population; structure; populations; using; young; Female; times; High; Competition; species; predators; predator; endangered; snow; snow leopard; snow-leopard; leopard; trans-himalaya; transhimalaya |
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Many mammalian herbivores show a temporal diet variation between graminoid-dominated and browse dominated diets. We determined the causes of such a diet shift and its implications for conservation of a medium sized ungulate-the bharal Pseudois nayaur. Past studies show that the bharal diet is dominated by graminoids (>80%) during summer, but the contribution of graminoids declines to about 50% in winter. We tested the predictions generated by two alternative hypotheses explaining the decline: low graminoid availability during winter causes bharal to include browse in their diet; bharal include browse, with relatively higher nutritional quality, in their diet to compensate for the poor quality of graminoids during winter. We measured winter graminoid availability in areas with no livestock grazing, areas with relatively moderate livestock grazing, and those with intense livestock grazing pressures. The chemical composition of plants contributing to the bharal diet was analysed. The bharal diet was quantiWed through signs of feeding on vegetation at feeding locations. Population structures of bharal populations were recorded using a total count method. Graminoid availability was highest in areas without livestock grazing, followed by areas with moderate and intense livestock grazing. The bharal diet was dominated by graminoids (73%) in areas with highest graminoid availability. Graminoid contribution to the bharal diet declined monotonically (50, 36%) with a decline in graminoid availability. Bharal young to female ratio was 3 times higher in areas with high graminoid availability than areas with low graminoid availability. The composition of the bharal winter diet was governed predominantly by the availability of graminoids in the rangelands. Our results suggest that bharal include more browse in their diet during winter due to competition from livestock for graminoids. Since livestock grazing reduces graminoid availability, creation of livestock-free areas is necessary for the conservation of grazing species such as the bharal and its predators including the endangered snow leopard in the Trans-Himalaya. |
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Springer-Verlag |
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Online |
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This study was made possible by a grant from the Snow Leopard Network. Additional support was given by the Wildlife Conservation Society-India Program and Nature Conservation Foundation, the Whitley Fund for Nature, the Ford Foundation, and the Nadathur Conservation Trust. |
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SLN @ rana @ 1062 |
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951 |
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Author |
Suryawanshi, K.R. |
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Towards snow leopard prey recovery: understanding the resource use strategies and demographic responses of bharal Pseudois nayaur to livestock grazing and removal; Final project report |
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Report |
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2009 |
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1-43 |
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project; snow; snow leopard; snow-leopard; leopard; network; conservation; program; prey; recovery; resource; use; strategy; demographic; Response; bharal; Pseudois; pseudois nayaur; Pseudois-nayaur; nayaur; livestock; grazing; Report; decline; wild; populations; population; Himalayan; region; Competition; threats; threat; uncia; Uncia uncia; Uncia-uncia; study; diet; winter; Test; browse; nutrition; areas; area; young; Female; times; High; Adult; mortality; species; predators; predator; endangered; trans-himalaya; transhimalaya |
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Decline of wild prey populations in the Himalayan region, largely due to competition with livestock, has been identified as one of the main threats to the snow leopard Uncia uncia. Studies show that bharal Pseudois nayaur diet is dominated by graminoids during summer, but the proportion of graminoids declines in winter. We explore the causes for the decline of graminoids from bharal winter diet and resulting implications for bharal conservation. We test the predictions generated by two alternative hypotheses, (H1) low graminoid availability caused by livestock grazing during winter causes bharal to include browse in their diet, and, (H2) bharal include browse, with relatively higher nutrition, to compensate for the poor quality of graminoids during winter. Graminoid availability was highest in areas without livestock grazing, followed by areas with moderate and intense livestock grazing. Graminoid quality in winter was relatively lower than that of browse, but the difference was not statistically significant. Bharal diet was dominated by graminoids in areas with highest graminoid availability. Graminoid contribution to bharal diet declined monotonically with a decline in graminoid availability. Bharal young to female ratio was three times higher in areas with high graminoid availability than areas with low graminoid availability. No starvation-related adult mortalities were observed in any of the areas. Composition of bharal winter diet was governed predominantly by the availability of graminoids in the rangelands. Since livestock grazing reduces graminoid availability, creation of livestock free areas is necessary for conservation of grazing species such as the bharal and its predators such as the endangered snow leopard in the Trans-Himalaya. |
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Project funded by Snow Leopard Network's Snow Leopard Conservation Grant Program, 2008. Nature Conservation Foundation, Mysore. Post-graduate Program in Wildlife Biology and Conservation, National Centre for Biological Sciences, Wildlife Conservation Society -India program, Bangalore, India. |
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SLN @ rana @ 1077 |
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952 |
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Tserendeleg, J. |
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On Protection and Survey of Snow Leopards in Mongolia |
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Conference Article |
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1994 |
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43-46 |
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Mongolia; transects; survey; habitat; conservation; distribution; irbis; herders; Altay; Altai; predator; prey; ibex; argali; hunting; pelts; skins; furs; coats; killing; behavior; activity; scrapes; feces; scat; sprays; mating; breeding; gestation; Pregnancy; browse; Macne; blood-sucking; poison; Blood; sucking; 2890 |
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Islt |
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Usa |
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J.L.Fox; D.Jizeng |
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Full text at URLTitle, Monographic: Seventh International Snow Leopard SymposiumPlace of Meeting: ChinaDate of Copyright: 1994 |
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SLN @ rana @ 259 |
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970 |
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Tserendeleg, J. |
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Status and Conservation of Snow Leopard in Mongolia |
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1997 |
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42-47 |
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Mongolia; Macne; Altai; conservation; status; distribution; herder; herders; livestock; gobi; argali; ibex; scrapes; hunters; marmot; predator; prey; parks; park; reserve; reserves; refuge; protected-area; browse; protected area; protected; 2510 |
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International Snow Leopard Trust |
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Lahore, Pakistan |
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R.Jackson; A.Ahmad |
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Full text at URLTitle, Monographic: Eighth International Snow Leopard SymposiumPlace of Meeting: Islamabad, PakistanDate of Copyright: 1997 |
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SLN @ rana @ 328 |
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971 |
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Vorobjov A.G. |
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Ungulates (Artiodactyla) of the Western Tien Shan (Distribution and number within Kyrgyzstan) |
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Miscellaneous |
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2002 |
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68-72 |
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Kyrgyzstan; Western Tien Shan; distribution; number; ungulates; predators; wolf; Lynx; snow leopard; commercial hunting.; 8520; Russian |
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Materials on numbers and densities of 8 ungulates (Sus scrofa nigripes, Capreolus pygargus tianschanicus, Cervus elaphus, Cervus nippon, Cervus dama, Capra sibirica formosovi, Ovis ammon karelini, Bison bonasus) within the Chatkal …nd Talas Ranges are given. A critical analysis is also presented on prospects for development of the commercial hunting tourism as opportunities for additional assignments in measures on conservation of the Western Tien Shan biodiversity |
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Full text available in RussianJournal Title: Biodiversity of Western Tien Shan. |
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SLN @ rana @ 829 |
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992 |
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Voronov A.G. |
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Predatory mammals |
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Miscellaneous |
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1985 |
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233-235 |
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predators; mountains; endangered species; Red Data bok; snow leopard.; 8540; Russian |
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Predatory mammal in mountains are submitted by widely widespread species, such, as wolves, to a lynx and bears, and characteristic species for the high mountains, well adapted to mountain conditions and not going down below Alpine zone (a snow leopard, or irbis, occupying mountains of the Central Asia, etc.). |
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Full text available in RussianJournal Title: Biogeography of the world. |
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SLN @ rana @ 831 |
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994 |
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Vyrypaev V.A. |
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Ecologic prerequisites for predatory mammal conservation in the mountain biocenosis of the Issyk-Kul area |
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1979 |
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18-19 |
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Kyrgyzstan; predators; snow leopard; preys; threats.; 8550; Russian |
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A decreasing number of predatory mammal species is connected with anthropogenic activity. Number of snow leopard is directly dependent on anthropogenic activity. A snow leopard population directly depends on food resources, such as ibex, marmot, rarer – argali and snow-cock in summer, and ibex, roe-deer, and rarer argali in winter. |
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Full text available in RussianJournal Title: The ecologic fundamentals of protection and sustainable use of predatory mammals. |
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SLN @ rana @ 832 |
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995 |
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Vyrypaev V.A. |
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The influence of sarcoptosis on the population of Capra sibirica Pall. in Western Tien Shan |
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1974 |
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Vol. II. |
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292-293 |
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Uzbekistan; Western Tien Shan; Chatkal nature reserve; sarcoptosis; predators; snow leopard.; 8560; Russian |
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Given is data concerning disease (sarcoptosis) of Siberian ibex (Capra sibirica) in Western Tien Shan. The carriers of the disease are adult males of Capra sibirica during distant migrations that as a rule take place in anticipation of snowy winters or owing to human influence. Ibexes are not merely infected with sarcoptosis but perish enmasse from the disease. In the first year the disease strikes down, in the main, migrants – adult males. Predators including snow leopard kill the weakened animals. During the recent five years the density of Carpa sibirica at the Chatkal Mountain-Forest Reservation dropped 2.3-fold as a result of sarcoptosis and owing to the migrations caused by the reduction of the population. Is recommended: 1. Stringent veterinary control at places of possible contacts between infected domestic animals and healthy wild ungulates. 2. Using modern technology migration routes of ungulates should be studied for elaborating effective measures of quarantine. |
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Full text available in RussianJournal Title: Proceedings of First Unternational Theriological Congress. Moscow. |
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SLN @ rana @ 833 |
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996 |
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Zhiryakov V.A. |
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Ibex. Rare ungulate species of the Almaty nature reserve and their protection |
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1976 |
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141-154 |
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Kazakhstan; Almaty nature reserve; ungulates; number; aerial census; goitered gazelle; argali; ibex; predators; wolf; snow leopard; poaching; disturbance.; 8750; Russian |
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Collected are data on rare ungulates in the Almaty nature reserve in 1968-1973. Since recently the population of goitered gazelle has dropped sharply and is now 20-30 animals per seven ha. The nature reserve shall be expanded in order to protect the animals. Argali inhabits a desert area in the mountains of Greater and Lesser Kalkana. Argali sometimes migrates outside the nature reserve. Ibex inhabits a mountainous part of the nature reserve, its population being 10-13 animals per 1,000 ha. Predators have negligible impact on the ibex population (12.5 percent of deaths), which is preyed on solely by snow leopard and wolf. |
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Full text available in RussianJournal Title: Rare mammals of the USSR fauna. |
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SLN @ rana @ 852 |
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1082 |
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Zhiryakov V.A. |
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The influence of large predators on wild mammal populations in the Almaty nature reserve |
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1979 |
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37-39 |
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Kazakhstan; Almaty nature reserve; Animals; predators; snow leopard; wolf; preys.; 8760; Russian |
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There are following large predators in the Almaty nature reserve: wolf (5-6), snow leopard (single occasions), Turkistan lynx (single occasions), and Tien Shan brown bear (15-20). The share of wild mammals (roe-deer, ibex, wild boar, argali, gazelle, moral, and badger) being eaten by predators is 18.2 percent, about 60 percent of the entire prey falling to the share of wolf. |
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Full text available in RussianJournal Title: Ecologic fundamentals of protection and sustainable use of predatory mammals. |
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SLN @ rana @ 853 |
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1083 |
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