Elevational patterns of species richness, range and body size for spiny frogs.
Elevational patterns of species richness, range and body size for spiny frogs.
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刺蛙物种丰富度、范围和体型的海拔模式
DOI：
10.1371/journal.pone.0019817
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Jiang J
中科院分区：
文献类型：
--
作者：
Hu J;Xie F;Li C;Jiang J
物种丰富度空间格局的量化是生物多样性理论的核心问题。棘蛙亚科Painae（无尾目：Dicroglossidae）分布广泛，但在亚洲是特有的。使用棘蛙分布和身体大小的数据，和一个数字高程模型数据集，我们探讨了棘蛙丰富度的海拔模式，并量化了面积对丰富度模式的影响，在一个大的海拔梯度从0-5000米a.s.l.我们还测试了两个假设：（一）Rapoport的海拔效应是有效的Painae，和（ii）伯格曼的倾向是存在于刺蛙。不同海拔带宽（100 m、200 m、300 m和400 m）的蝶类物种丰富度均呈现沿着海拔梯度的“驼峰”型格局。Paini和Quasipaini部落物种丰富度的海拔变化进一步证实了这一发现，而Quasipaini物种丰富度的峰值发生在比Paini最大值低的海拔。该地区并没有解释一个显着的变化总量，也Paini物种丰富度，但它确实解释了Quasipaini的变化。在不同海拔梯度上有5个明显的类群，物种的海拔变幅并不随海拔变幅中点的增加而扩大。体长与海拔高度呈显著负相关。我们的研究结果表明，拉波波特的海拔规则是不是一个强制性的属性刺蛙，也表明伯格曼的规则是不普遍适用于两栖动物。这项研究强调了需要探索物种丰富度模式的潜在机制，特别是在宏观生态学中的两栖动物。
Quantifying spatial patterns of species richness is a core problem in biodiversity theory. Spiny frogs of the subfamily Painae (Anura: Dicroglossidae) are widespread, but endemic to Asia. Using spiny frog distribution and body size data, and a digital elevation model data set we explored altitudinal patterns of spiny frog richness and quantified the effect of area on the richness pattern over a large altitudinal gradient from 0–5000 m a.s.l. We also tested two hypotheses: (i) the Rapoport's altitudinal effect is valid for the Painae, and (ii) Bergmann's clines are present in spiny frogs. The species richness of Painae across four different altitudinal band widths (100 m, 200 m, 300 m and 400 m) all showed hump-shaped patterns along altitudinal gradient. The altitudinal changes in species richness of the Paini and Quasipaini tribes further confirmed this finding, while the peak of Quasipaini species richness occurred at lower elevations than the maxima of Paini. The area did not explain a significant amount of variation in total, nor Paini species richness, but it did explain variation in Quasipaini. Five distinct groups across altitudinal gradient were found. Species altitudinal ranges did not expand with an increase in the midpoints of altitudinal ranges. A significant negative correlation between body size and elevation was exhibited. Our findings demonstrate that Rapoport's altitudinal rule is not a compulsory attribute of spiny frogs and also suggest that Bergmann's rule is not generally applicable to amphibians. The study highlights a need to explore the underlying mechanisms of species richness patterns, particularly for amphibians in macroecology.
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