Locomotor ecology of wild orangutans (Pongo pygmaeus abelii) in the Gunung Leuser Ecosystem, Sumatra, Indonesia: a multivariate analysis using log-linear modelling.
Locomotor ecology of wild orangutans (Pongo pygmaeus abelii) in the Gunung Leuser Ecosystem, Sumatra, Indonesia: a multivariate analysis using log-linear modelling.
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印度尼西亚苏门答腊古农勒塞尔生态系统中野生猩猩（Pongo pygmaeus abelii）的运动生态学：使用对数线性模型的多变量分析。
DOI：
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发表时间：
2005
影响因子：
2.8
通讯作者：
R. Crompton
中科院分区：
文献类型：
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作者：
S. Thorpe;R. Crompton
苏门答腊猩猩庞大的身体质量和独特的树栖生活方式使它们成为了解灵长类动物与环境之间动态的关键物种。灵长类动物运动生态学知识的增加，加上最近在位置模式分类标准化方面的发展（Hunt et al. [1996] Primates 37：363-387），为复杂的多变量统计方法开辟了道路，阐明了对运动的多种影响之间的复杂关联。在这项研究中，我们提出了一个对数线性建模方法，用于确定猩猩的运动，树冠水平，支持使用和上下文行为之间的关键关联。对数线性模型是特别合适的，因为它是专为分类数据，提供了一个系统的方法来测试替代假设变量之间的相互作用，并允许相互作用的相对重要性进行排名。支持直径和类型被发现有最强的协会与运动剧目，这表明猩猩已经进化出独特的运动模式，以解决各种复杂的栖息地问题。然而，在树冠和上下文行为的高度不直接影响运动：相反，它们的效果是修改的支持类型和支持直径，分别。与经典的预测相反，年龄-性别类别对猩猩的支持使用和运动的影响有限，这可能反映了所有年龄-性别类别的个体都遵循的树栖路径的存在。影响主要与成年、经产雌性动物比成年雄性动物和未成熟受试者采取更谨慎的运动方式的趋势有关。
The large body mass and exclusively arboreal lifestyle of Sumatran orangutans identify them as a key species in understanding the dynamic between primates and their environment. Increased knowledge of primate locomotor ecology, coupled with recent developments in the standardization of positional mode classifications (Hunt et al. [1996] Primates 37:363-387), opened the way for sophisticated multivariate statistical approaches, clarifying complex associations between multiple influences on locomotion. In this study we present a log-linear modelling approach used to identify key associations between orangutan locomotion, canopy level, support use, and contextual behavior. Log-linear modelling is particularly appropriate because it is designed for categorical data, provides a systematic method for testing alternative hypotheses regarding interactions between variables, and allows interactions to be ranked numerically in terms of relative importance. Support diameter and type were found to have the strongest associations with locomotor repertoire, suggesting that orangutans have evolved distinct locomotor modes to solve a variety of complex habitat problems. However, height in the canopy and contextual behavior do not directly influence locomotion: instead, their effect is modified by support type and support diameter, respectively. Contrary to classic predictions, age-sex category has only limited influence on orangutan support use and locomotion, perhaps reflecting the presence of arboreal pathways which individuals of all age-sex categories follow. Effects are primarily related to a tendency for adult, parous females to adopt a more cautious approach to locomotion than adult males and immature subjects.