Wang Yanmei, Hu Huali, Feng Lei, Chen Jingyi, Zhong Junjie, Seah Rachel Wan Xin, Ding Guohua
Laboratory of Amphibian Diversity Investigation, College of Ecology, Lishui University, Lishui 323000, China.
College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
Biology (Basel). 2023 Mar 16;12(3):461. doi: 10.3390/biology12030461.
Elevational gradients provide an excellent opportunity to assess biodiversity patterns and community structure. Previous studies mainly focus on higher elevations or are limited to small areas in mountainous regions. Little information can be found on amphibian biodiversity in middle- and low-elevational areas, hence our study was devoted to filling up the current gaps in these research areas. To understand the variability of biodiversity of amphibian species in the Fujian Junzifeng National Nature Reserve in eastern China, our study included taxonomic and phylogenetic components to describe the various patterns of regional and elevational distribution. The results showed that (1) most of the taxonomic and phylogenetic diversity metrics were correlated; with regard to the surveyed area, Faith's phylogenetic diversity index () and net relatedness index () were positively correlated with the Shannon-Wiener index (), Margalef index (), and species richness (), while negatively with the Pielou index; whereas for elevation, only the Pielou index was positively correlated with the nearest taxon index (), but negatively with other indices; (2) taxonomic and phylogenetic diversities did not differ among the three survey locations but differed significantly along the elevational gradient; Simpson index, , , and had a hump-shaped relationship with elevations, and decreased gradually with the increase in elevation, whereas and sharply increased at the elevation above 900 m; (3) the species range size and the corresponding midpoint of amphibians were affected by a strong phylogenetic signal, which supports the elevational Rapoport's rule upon removal of and from the study.
海拔梯度为评估生物多样性模式和群落结构提供了绝佳机会。以往研究主要集中在较高海拔地区，或局限于山区的小范围区域。关于中低海拔地区两栖动物生物多样性的信息很少，因此我们的研究致力于填补这些研究领域目前的空白。为了解中国东部福建君子峰国家级自然保护区两栖动物物种生物多样性的变异性，我们的研究包括分类学和系统发育学成分，以描述区域和海拔分布的各种模式。结果表明：（1）大多数分类学和系统发育多样性指标相互关联；就调查区域而言，费思系统发育多样性指数（）和净亲缘关系指数（）与香农-维纳指数（）、马加莱夫指数（）和物种丰富度（）呈正相关，而与皮洛指数呈负相关；而就海拔而言，只有皮洛指数与最近分类单元指数（）呈正相关，与其他指数呈负相关；（2）分类学和系统发育多样性在三个调查地点之间没有差异，但沿海拔梯度差异显著；辛普森指数、、和与海拔呈驼峰状关系，而随着海拔升高逐渐降低，而和在海拔900米以上急剧增加；（3）两栖动物的物种分布范围大小和相应中点受到强烈的系统发育信号影响，在从研究中去除和后，这支持了海拔拉波波特法则。
