Distribution of small mammals in a pastoral landscape of the Tibetan plateaus (Western Sichuan, China) and relationship with grazing practices - Archive ouverte HAL Access content directly
Journal Articles Mammalia Year : 2006

Distribution of small mammals in a pastoral landscape of the Tibetan plateaus (Western Sichuan, China) and relationship with grazing practices

Abstract

Small mammal distribution was studied along a grazing gradient in a pastoral landscape of the Tibetan plateaus of Western Sichuan, China. Smaller small mammals (< 100 grams) were sampled using standard trapping. The link between habitat and both smaller and larger small mammal distribution on a landscape scale was estimated using landscape transects. The relative density of the Microtus oeconomus/limnophilus complex ranged from higher levels in fenced grassland and bushes (i.e. low grazing pressure), to lower levels in habitats with a high grazing pressure, where this species was not trapped. Ochotona curzoniae, O. cansus and Cricetulus kamensis displayed a reverse gradient, with higher relative densities in overgrazed habitats (bare grounds). The distribution of Microtus irene was restricted to two slope habitats: rocky slopes and Stellera chamaejasme grassland. Microtus leucurus was only trapped in Potentilla fruticosa bushes and in a single grassland type, having an intermediate stage of degradation. These results suggest a differential response of the small mammal species, in terms of relative density, to grazing pressure level.
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Dates and versions

hal-00341587 , version 1 (25-11-2008)

Identifiers

  • HAL Id : hal-00341587 , version 1
  • PRODINRA : 250181

Cite

Francis Raoul, J. P. Quéré, Dominique Rieffel, Nadine Bernard, Kenichi Takahashi, et al.. Distribution of small mammals in a pastoral landscape of the Tibetan plateaus (Western Sichuan, China) and relationship with grazing practices. Mammalia, 2006, 3-4, pp.214-225. ⟨hal-00341587⟩
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