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Author |
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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Year |
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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Abstract |
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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Call Number |
SLN @ rana @ 1062 |
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951 |
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Author |
Jackson, R.; Roe, J.; Wangchuk, R.; Hunter, D. |
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Title |
Camera-Trapping of Snow Leopards |
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Journal Article |
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Year |
2005 |
Publication |
Cat News |
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42 |
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Spring |
Pages |
19-21 |
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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 |
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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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SLN @ rana @ 1017 |
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475 |
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Author |
Freeman, H. |
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Title |
The snow leopard, today and yesterday |
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Book Chapter |
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1980 |
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International Pedigree Book of Snow Leopards, Vol. 2 |
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2 |
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37-43 |
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Keywords ![sorted by Keywords field, ascending order (up)](img/sort_asc.gif) |
captive; captive populations; captivity; International; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; zoo |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1049 |
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316 |
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Blomqvist, L. |
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Title |
Photos of snow leopards |
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1978 |
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International Pedigree Book of Snow Leopards, Vol. 1 |
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1 |
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141-151 |
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captive; captivity; International; pedigree; photo; snow-leopard; snow-leopards; snow leopard; snow leopards; zoo |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1051 |
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145 |
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Author |
Worley, M.B. |
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Title |
Chronic liver disease in snow leopards: A possible viral etiology |
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Book Chapter |
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1982 |
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International Pedigree Book of Snow Leopards, Vol. 3 |
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3 |
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131-133 |
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captive; Chronic; Disease; etiology; International; Liver; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; veterinary; Viral; zoo |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1046 |
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1030 |
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Author |
Ruedi, D.; Heldstab, A.; Wiesner, H.; Keller, P. |
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Title |
Liver cirrhosis in the snow leopard (Uncia uncia): Case histories of three animals and suggestion of some diagnostic possibilities |
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Book Chapter |
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1978 |
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International Pedigree Book of Snow Leopards, Vol. 1 |
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1 |
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113-129 |
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captive; Cirrhosis; diagnostic; history; International; Liver; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; uncia; Uncia-uncia; Uncia uncia; zoo |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1039 |
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835 |
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Vogt, P. |
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New enclosures for snow leopards (Uncia uncia) at Krefeld Zoo |
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1982 |
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International Pedigree Book of Snow Leopards, Vol. 3 |
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3 |
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67-70 |
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captive; enclosures; International; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; uncia; Uncia-uncia; Uncia uncia; zoo |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1041 |
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988 |
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Worley, M.B. |
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Title |
Hypogammaglobulinemia in snow leopards |
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Book Chapter |
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1982 |
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International Pedigree Book of Snow Leopards, Vol. 3 |
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3 |
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129-130 |
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captive; hypogammaglobulinemia; International; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; veterinary |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1045 |
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1029 |
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Author |
Velte, F. |
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Snow leopards at the Seneca Zoological Park, Rochester |
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1982 |
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International Pedigree Book of Snow Leopards, Vol. 3 |
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3 |
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55-58 |
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captive; International; park; pedigree; snow-leopard; snow-leopards; snow leopard; snow leopards; zoo; zoological |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1040 |
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984 |
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Nishine, Y. |
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The captive snow leopard programme (SSCJ) in Japan |
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Book Chapter |
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1998 |
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International Pedigree Book of Snow Leopards |
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7 |
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21-25 |
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Keywords ![sorted by Keywords field, ascending order (up)](img/sort_asc.gif) |
captive; snow; snow leopard; snow-leopard; leopard; Japan; International; pedigree; snow leopards; snow-leopards; leopards |
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Helsinki Zoo |
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Helsinki |
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Blomqvist, L. |
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SLN @ rana @ 1089 |
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721 |
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