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Simon Musila, 陈中正, 李权, Richard Yego, 张斌, Kenneth Onditi, Immaculate Muthoni, 何水旺, Samson Omondi, James Mathenge, Esther N. Kioko, 蒋学龙. 2019: 肯尼亚山非飞行小型兽类多样性及其垂直分布格局. 动物学研究, 40(1): 53-60. DOI: 10.24272/j.issn.2095-8137.2019.004
引用本文: Simon Musila, 陈中正, 李权, Richard Yego, 张斌, Kenneth Onditi, Immaculate Muthoni, 何水旺, Samson Omondi, James Mathenge, Esther N. Kioko, 蒋学龙. 2019: 肯尼亚山非飞行小型兽类多样性及其垂直分布格局. 动物学研究, 40(1): 53-60. DOI: 10.24272/j.issn.2095-8137.2019.004
Simon Musila, Zhong-Zheng Chen, Quan Li, Richard Yego, Bin Zhang, Kenneth Onditi, Immaculate Muthoni, Shui-Wang He, Samson Omondi, James Mathenge, Esther N. Kioko, Xue-Long Jiang. 2019: Diversity and distribution patterns of non-volant small mammals along different elevation gradients on Mt. Kenya, Kenya. Zoological Research, 40(1): 53-60. DOI: 10.24272/j.issn.2095-8137.2019.004
Citation: Simon Musila, Zhong-Zheng Chen, Quan Li, Richard Yego, Bin Zhang, Kenneth Onditi, Immaculate Muthoni, Shui-Wang He, Samson Omondi, James Mathenge, Esther N. Kioko, Xue-Long Jiang. 2019: Diversity and distribution patterns of non-volant small mammals along different elevation gradients on Mt. Kenya, Kenya. Zoological Research, 40(1): 53-60. DOI: 10.24272/j.issn.2095-8137.2019.004

肯尼亚山非飞行小型兽类多样性及其垂直分布格局

Diversity and distribution patterns of non-volant small mammals along different elevation gradients on Mt. Kenya, Kenya

  • 摘要: 小型兽类多样性沿海拔梯度的垂直分布规律在气候变化研究中具有重要意义。但是目前关于非洲小型兽类垂直分布格局的研究较少。肯尼亚山是非洲第二高峰,目前该地区小型兽类研究多样性的认识还不清楚。本研究利用标准化的方法对东坡(Chogoria)和西坡(Sirimon)的非飞行小型兽类的物种多样性进行了详细调查。调查以 200 m海拔为间隔在两个坡面分别选取了9个调查样带,累计布设12240 个有效夹日,共捕获小型兽类1905号,分属25种。分析结果表明:在两个坡面,小型兽类物种多度的峰值都出现在中海拔区域,但是其物种多样性垂直分布格局两个坡面的存在较大差异。在东坡,中高海拔的小型兽类物种丰富度的明显高于低海拔,物种丰富度的峰值出现在海拔2800m的中海拔;而西坡小型兽类的物种丰富度随海拔变化并无明显变化。我们的研究结果说明,即使在同一座山,不同坡面的物种丰富度垂直分布格局依然会存在较大差异。另外,我们通过查阅文献资料结合本次调查的数据汇编了肯尼亚山兽类名录,共记录小型兽类76种。我们的研究显示,非洲山地小型兽类多样性的研究还存在很大不足,有待进一步深入。

     

    Abstract: The distribution of small mammals in mountainous environments across different elevations can provide important information on the effects of climate change on the dispersal of species. However, few studies conducted on Afromontane ecosystems have compared the altitudinal patterns of small mammal diversity. We investigated the species diversity and abundance of non-volant small mammals (hereafter ‘small mammals’) on Mt. Kenya, the second tallest mountain in Africa, using a standard sampling scheme. Nine sampling transects were established at intervals of 200 m on the eastern (Chogoria) and western (Sirimon) slopes. A total of 1 905 individuals representing 25 species of small mammals were trapped after 12 240 trap-nights. Abundance was highest at mid-elevations on both slopes. However, species richness and distribution patterns differed between the two slopes. More species were recorded on Chogoria (24) than on Sirimon (17).On Chogoria, species richness was higher at mid-high elevations, with a peak at mid-elevation (2 800 m a.s.l.), whereas species richness showed little variation on the Sirimon slope. These results indicate that patterns of species diversity can differ between slopes on the same mountain. In addition, we extensively reviewed literature on Mt. Kenya’s mammals and compiled a comprehensive checklist of 76 mammalian species. However, additional research is required to improve our understanding of small mammal diversity in mountain habitats in Africa.

     

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