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Xu, F.; Ming, M.; Yin, S.-jing; Chundawat R.S.; Marden; Nui, Y. |
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Title |
Preliminary Study on the Habitat Selection of Uncia uncia |
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Miscellaneous |
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2006 |
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23 |
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471-473 |
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Keywords |
study; habitat; Habitat selection; selection; uncia; Uncia uncia; Uncia-uncia; Chinese; research; large; species; extinction; Felidae; central; mountains; mountain; Xinjiang; Tianshan Mountains; Altay; national; nature; reserve; fieldwork; sign; grazing; status; Test; analysis; primary; factor; topography; valley |
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Uncia uncia is one of the rare large species on the brink of extinction in Felidae in the world, and inhabit only the Central Asian mountains. It is said that there are currently only 4500-7300 Uncia uncia surviving. During the period from September 2004 to July 2005, the habitat selection of Uncia uncia was investigated in some mountains in Xinjiang, including the eastern Tianshan Mountains, Beita Mountains, Altay Mounts and Mount Tumor National Nature Reserve. In several months of fieldwork, we got 171 sign samples of Uncia uncia and 123 random samples in total. Five habitat features, i.e., the elevation, topographic features, vegetation type, grazing status and ruggedness, are selected to compare the difference of selectivity of the Uncia uncia habitat selection. The Chi-square goodness-of-fit test and the binomial test are used to check the significance of Uncia uncia habitat selection, and the principal component analysis is used to find the primary factors in in the selection. The result s are as follows : (1) Uncia uncia selected all kinds of the habitat types , especially the elevation , topography , vegetation types and ruggedness ; (2) Ruggedness and the vegetation types are the preliminary factors for the habitat selection. Topography is the secondary factor ; (3) Uncia uncia prefer to inhabit in the rugged habitat s with moderate shrubberies , and they also like to leave signs in valley bottoms rather than hillsides. |
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Full text available in ChineseName of periodical: Arid Zone Research |
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SLN @ rana @ 871 |
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1036 |
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Author |
Chichikin Yu.N., Y.A.I. |
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Title |
Issyk Kul nature reserve |
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Miscellaneous |
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1969 |
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475-480 |
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Kyrgyzstan; Issyk Kul nature reserve; Jety Oguz site; establishment; climate; physiographic factors; plants; Animals; snow leopard.; 6460; Russian |
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A description of the Issyk Kul nature reserve (Kyrgyzstan) is given and includes as follows: data of establishment, location, physic and geographic description, climate, flora and fauna. Snow leopard inhabited in Jety Oguz site of the nature reserve. |
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Full text available in RussianJournal Title: Protected areas of Soviet Union. |
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SLN @ rana @ 624 |
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219 |
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Author |
Esipov V.M. |
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Title |
Chatkal nature reserve |
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Miscellaneous |
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1969 |
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486-494 |
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Uzbekistan; Western Tien Shan; Chatkal nature reserve; establishment; soil; climate; physiographic factors; altitude zones; flora; fauna; snow leopard.; 6550; Russian |
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Presented is history of the Chatkal nature reserve's establishment, physic and geographic description, types of soils, climate, altitude zones, flora and fauna, historical monuments. Snow leopard is quiet rare species in nature reserve. Last years irbis's tracks and voice have been recorded in highly mountain sites of Maidantal part of Chatkal nature reserve. |
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Full text available in RussianJournal Title: Nature reserves of the USSR. |
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SLN @ rana @ 633 |
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262 |
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Ale, S.; Brown, J. |
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Title |
The contingencies of group size and vigilance |
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Miscellaneous |
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2007 |
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Evolutionary Ecology Research, |
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9 |
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1263-1276 |
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attraction effect,contingency,dilution effect,fitness,group-size effect,many-eyes effect,predation risk,vigilance behaviour; predation; decline; potential; predators; predator; feeding; Animals; Animal; use; food; effects; Relationship; behaviour; methods; game; Interactions; interaction; factor; value; Energy |
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Background: Predation risk declines non-linearly with one's own vigilance and the vigilance of others in the group (the 'many-eyes' effect). Furthermore, as group size increases, the individual's risk of predation may decline through dilution with more potential victims, but may increase if larger groups attract more predators. These are known, respectively, as the dilution effect and the attraction effect.
Assumptions: Feeding animals use vigilance to trade-off food and safety. Net feeding rate declines linearly with vigilance.
Question: How do the many-eyes, dilution, and attraction effects interact to influence the relationship between group size and vigilance behaviour?
Mathematical methods: We use game theory and the fitness-generating function to determine the ESS level of vigilance of an individual within a group.
Predictions: Vigilance decreases with group size as a consequence of the many-eyes and dilution effects but increases with group size as a consequence of the attraction effect, when they act independent of each other. Their synergetic effects on vigilance depend upon the relative strengths of each and their interactions. Regardless, the influence of other factors on vigilance – such as encounter rate with predators, predator lethality, marginal value of energy, and value of vigilance – decline with group size. |
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English |
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SLN @ rana @ 886 |
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53 |
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