The Phylogenetic Structure Patterns of Angiosperm Species and Their Determinants in East Eurasia

IF 6.3 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography Pub Date : 2024-08-21 DOI:10.1111/geb.13897

Wenqi Song, Yichao Li, Ao Luo, Xiangyan Su, Yunpeng Liu, Yuan Luo, Ke Jiang, Denis Sandanov, Wei Wang, Zhiheng Wang

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引用次数: 0

Abstract

Aim

The Kunming-Montreal Global Biodiversity Framework requires that evolutionary histories of species should be considered in conservation planning. The phylogenetic structure of species assemblages quantifies species evolutionary histories and increasingly becomes an endeavour for ecologists. Understanding the geographic patterns of phylogenetic structure of species assemblages and their drivers can provide a fundamental reference for conservation planning. Although several theoretical hypotheses based on the effects of contemporary environment, historical climate change and evolutionary niche conservatism had been widely discussed in previous studies, the relative contributions of these hypotheses on phylogenetic structure of angiosperms, especially herbaceous species, remain debated.

Location

East Eurasia.

Major Taxa Studied

Angiosperms.

Methods

We compiled distributions of 43,023 angiosperm species in east Eurasia at spatial resolution (100 × 100 km²). Using this newly compiled database and a species-level phylogeny, we estimated the phylogenetic structure patterns for species with different growth forms. We explored the relationships of these patterns with contemporary environment and historical climate change to test predictions of the tropical niche conservatism hypothesis (TCH) and to compare the contribution of different hypotheses using generalised linear models and hierarchical partitioning.

Results

We found that phylogenetic structure of angiosperms displayed significant latitudinal gradients. Notably, phylogenetic structure patterns and their drivers differed between woody and herbaceous species. Actual evapotranspiration was the best predictor of phylogenetic structure patterns for all and herbaceous species, while the mean temperature of the coldest quarter was the best predictor for woody species. The effect of historical climate change on phylogenetic structure patterns was weak.

Main Conclusions

Our results suggest that the TCH only explains the phylogenetic structure pattern of woody species, not herbaceous species. Moreover, contemporary climate influences the phylogenetic structure of angiosperms in east Eurasian by affecting herbaceous and woody species differently.

查看原文本刊更多论文

东欧亚地区被子植物物种的系统发育结构模式及其决定因素

昆明-蒙特利尔全球生物多样性框架》要求在保护规划中考虑物种的进化史。物种集合的系统发育结构可以量化物种的进化历史，日益成为生态学家的一项工作。了解物种群系统发育结构的地理模式及其驱动因素可为保护规划提供基本参考。尽管基于当代环境、历史气候变化和进化生态位保守性影响的几种理论假说在以往的研究中被广泛讨论，但这些假说对被子植物（尤其是草本物种）系统发育结构的相对贡献仍存在争议。方法我们以空间分辨率（100 × 100 km2）编制了东欧亚大陆 43023 种被子植物的分布。利用这个新编制的数据库和物种水平的系统发育，我们估计了具有不同生长形式的物种的系统发育结构模式。我们探讨了这些模式与当代环境和历史气候变化之间的关系，以检验热带生态位保守主义假说（TCH）的预测，并利用广义线性模型和层次划分法比较了不同假说的贡献。值得注意的是，木本植物和草本植物的系统发生结构模式及其驱动因素各不相同。实际蒸散量是所有植物和草本植物系统发育结构模式的最佳预测因子，而最冷季度的平均气温则是木本植物系统发育结构模式的最佳预测因子。主要结论我们的研究结果表明，TCH 只能解释木本物种的系统发生结构模式，而不能解释草本物种的系统发生结构模式。此外，当代气候对欧亚大陆东部被子植物系统发育结构的影响是通过对草本和木本物种的不同影响来实现的。

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来源期刊

Global Ecology and Biogeography 环境科学-生态学

CiteScore

12.10

自引率

3.10%

发文量

170

审稿时长

3 months

期刊介绍： Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.