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首页> 外文期刊>International Journal of Primatology >Winter Feeding Tree Choice in Sichuan Snub-Nosed Monkeys (Rhinopithecus roxellanae) in Shennongjia Nature Reserve, China
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Winter Feeding Tree Choice in Sichuan Snub-Nosed Monkeys (Rhinopithecus roxellanae) in Shennongjia Nature Reserve, China

机译：神农架自然保护区四川小鼻猴（Rhinopithecus roxellanae）冬季取食树的选择

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摘要

We investigated patterns of winter feeding tree choice in 4 groups of Sichuan snub-nosed monkeys (Rhinopithecus roxellanae) in Shennongjia Nature Reserve, China. We collected data during 2 winters from 1998 to 2000. The monkeys used mature forest, young forest and shrub forest, but not grassland. Groups used tree species in a significantly nonrandom pattern. There was a similar composition of preferred tree species between different habitats for each group and among the same habitat types for different groups. They preferred Abies fargesii, Pinus armandii and Salix walliciana for foraging. The 3 species occur in varying degrees of abundance in different habitats and were used differently by the 4 groups. The difference is probably due to interhabitat differences in availability of tree species, in addition to microclimate. The mean circumference of a tree had little effect on its preference score, but preferred species tend to be larger. A Wilcoxon signed-rank test indicated that the percentage of trees used and average number of feeding bites per tree is significantly greater for larger trees. For all trees in a given habitat, the percentage of trees used and average number of bites per tree have a significant positive correlation with average tree circumference. Our results indicate that Rhinopithecus roxellanae prefer to feed in large trees more than small trees in a given habitat, thereby preferring mature forest habitat. There is also a group-size effect; larger groups used higher-quality habitats than those of smaller groups. Both tree species and size are the major determinants of feeding choice, but tree species is more important than tree size. Our results have at least three implications for winter habitat conservation of Sichuan snub-nosed monkeys. Conservation efforts should be focused on mature forest because it is better habitat at Rhinopithecus than young forest, as long as the same tree species are present. Secondly, Pinus armandii, Abies fargesii and Salix walliciana should be conserved as top priority in forest communities. Third, the largest trees in each habitat should be given greatest possible protection.
机译：我们调查了神农架自然保护区的4组四川冷鼻猴（Rhinopithecus roxellanae）冬季取食树的选择模式。我们从1998年至2000年的2个冬季收集了数据。猴子使用成熟的森林，幼小的森林和灌木林，但没有使用草地。小组以明显的非随机模式使用树木。在每个群体的不同栖息地之间以及在不同群体的相同栖息地类型之间，首选树种的组成相似。他们更喜欢Abies fargesii，Pinus armandii和Salix walliciana进行觅食。这3个物种在不同的生境中以不同程度的丰度发生，并且这4个物种的使用方式不同。这种差异可能是由于除了小气候以外，树木种类的可用性在栖息地之间也存在差异。一棵树的平均周长对其偏好得分影响不大，但首选树种往往更大。 Wilcoxon带符号秩检验表明，较大的树木使用的树木百分比和每棵树的平均采食量要大得多。对于给定栖息地中的所有树木，使用的树木百分比和每棵树木的平均被咬数与平均树木周长具有显着的正相关。我们的结果表明，在给定的栖息地中，大鼻犀牛比小树更喜欢以大树为食，因此更喜欢成熟的森林栖息地。还有一个小组规模的影响。大型团体使用的生境比小型团体要高。树木的种类和大小都是决定采食的主要因素，但是树木的种类比树木的大小更重要。我们的结果至少对四川小鼻猴的冬季栖息地保护具有三个意义。保护工作应集中在成熟的森林上，因为只要存在相同的树种，它在犀牛的栖息地就比年轻的森林更好。其次，应将华山松，冷杉木和柳柳作为森林社区的首要任务。第三，应给予每个栖息地最大的树木最大的保护。

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