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Li, Yanpeng; Xu, Han; Chen, Jie; Xiao, Yihua; Ni, Yunlong; Zhang, Ruyun; Ye, Wanhui; Lian, Juyu
Ecology and evolution, February 2022, Volume: 12, Issue: 2Journal Article
Identifying patterns and drivers of plant community assembly has long been a central issue in ecology. Many studies have explored the above questions using a trait‐based approach; however, there are still unknowns around how patterns of plant functional traits vary with environmental gradients. In this study, the responses of individual and multivariate trait dispersions of 134 species to soil resource availability were examined based on correlational analysis and torus‐translation tests across four spatial scales in a subtropical forest, China. Results indicated that different degrees of soil resource availability had different effects on trait dispersions. Specifically, limited resource (available phosphorus) showed negative relationships with trait dispersions, non‐limited resource (available potassium) showed positive relationships with trait dispersions, and saturated resource (available nitrogen) had no effect on trait dispersions. Moreover, compared with the stem (wood density) and architectural trait (maximum height), we found that leaf functional traits can well reflect the response of plants to nutrient gradients. Lastly, the spatial scale only affected the magnitude but not the direction of the correlations between trait dispersions and environmental gradients. Overall, the results highlight the importance of soil resource availability and spatial scale in understanding how plant functional traits respond to environmental gradients. In this study, the responses of individual and multivariate trait dispersions of 134 species in Dinghushan plot, China, to soil resource availability were examined. Results showed that different degrees of soil resource availability had different effects on trait dispersions. Specifically, limited resource mainly showed negative relationships with trait dispersions, non‐limited resource mainly showed positive relationships with trait dispersions, and saturated resource had no effect on trait dispersions.
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