Species–genetic diversity correlations depend on ecological similarity between multiple moorland plant species

作者：Naohiro I. Ishii, Shun K. Hirota, Ayumi Matsuo, Mitsuhiko Sato, Takehiro Sasaki, Yoshihisa Suyama · 发表于：Oikos · 年份：2022 · DOI：10.1111/oik.09023 · 被引用次数：4 · 研究领域：Plant and animal studies、Ecology and Vegetation Dynamics Studies、Genetic diversity and population structure

Species diversity (SD) and genetic diversity (GD) are fundamental aspects of biodiversity and are dependent because they are sympatrically affected by biotic and abiotic factors. Species–genetic diversity correlations (SGDCs) range from positive to negative among multiple focal species even across same communities. As determinant mechanisms of SGDCs, previous studies identified neutral processes related with habitat size and connectivity, environmental filtering and interspecific interactions. Theoretically, similar responses of SD and GD to these mechanisms can lead to positive SGDCs. The quantitative evaluation and comparison of similarity in each mechanism have not been performed. Here, we tested whether α‐ and β‐SGDCs could be determined by similarity in ecological characteristics (ecological similarity), such as environmental responses (responses of GD to moorland area, altitude, pH, electric conductivity and spatial autocorrelation based on regression analysis), dispersal ability (seed dispersal and pollination mode) and functional traits associated with competitions (leaf height, leaf size and specific leaf area (SLA)). We investigated SD and GD of 11 species based on single nucleotide polymorphisms across 20 moorland plant communities in northern Japan, and evaluated correlations between SGDCs and principal components of the ecological characteristics across the focal species. α‐SGDCs varied from positive to negative, which was explained by ecological similarity in th...