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Taxonomic and Functional Ant Diversity Along tropical Subtropical and Subalpine Elevational Transects in Southwest China

机译：中国西南部热带亚热带和亚高山高海拔样带的分类学和功能性蚂蚁多样性

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Although elevational gradients of biodiversity have long been the topic of scientific research, information on patterns of, and processes that shape insect community structure across elevation is still lacking. Addressing this gap requires the use of both taxonomic and functional approaches when studying diversity across elevational gradients. In this study, we examined taxonomic and functional alpha and beta diversity of ant assemblages sampled along tropical, subtropical, and subalpine elevational transects in Yunnan Province, southwest China. Species richness was used to quantify taxonomic alpha diversity, and two indices (FD and FRic) were calculated using morphological measurements to quantify functional alpha diversity. Taxonomic and functional beta diversity were partitioned into their turnover- and nestedness-resultant components. Though temperature and functional alpha diversity decreased linearly with increasing elevation, taxonomic alpha diversity showed a significant logarithmic decrease, with few species present at elevations greater than 3000 m a.s.l. The turnover-resultant component of taxonomic beta diversity increased with increasing elevational distance, while the nestedness-resultant component of functional beta diversity increased with increasing elevational distance in the subtropical transect. The observed patterns of taxonomic and functional diversity reflected ants’ thermophilic nature, implying functional adaptations (i.e., nested functional diversity) at higher elevations where environmental conditions were unfavorable.
机译：尽管生物多样性的海拔梯度长期以来一直是科学研究的主题，但仍然缺乏有关影响海拔高度上昆虫群落结构的模式和过程的信息。要解决这一差距，在研究海拔梯度上的多样性时，需要同时使用分类学方法和功能方法。在这项研究中，我们研究了中国西南云南沿热带，亚热带和亚高山海拔样带采样的蚂蚁组合的分类学和功能性α和β多样性。物种丰富度用于量化生物分类α多样性，并使用形态学测量方法计算两个指数（FD和FRic）以量化功能α多样性。分类学和功能性β多样性被分为其营业额和嵌套结果组成部分。尽管温度和功能性α多样性随海拔升高呈线性下降，但生物分类学α多样性却显示出对数显着下降，海拔超过3000 m a.s.l的物种很少。在亚热带样带中，分类学β多样性的周转结果成分随海拔高度的增加而增加，而功能性β多样性的巢状结果成分随海拔高度的增加而增加。观察到的分类学和功能多样性的模式反映了蚂蚁的嗜热性质，这意味着在环境条件不利的更高海拔地区的功能适应性（即嵌套功能多样性）。

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