Dominant species establishment may influence invasion resistance more than phylogenetic or functional diversity

作者：Adrienne R. Ernst, Rebecca S. Barak, Mary‐Claire Glasenhardt, Andrea T. Kramer, Daniel J. Larkin, Hannah E. Marx, Renata Poulton‐Kamakura, Andrew L. Hipp · 发表于：Journal of Applied Ecology · 年份：2023 · DOI：10.1111/1365-2664.14534 · 被引用次数：14 · 研究领域：Ecology and Vegetation Dynamics Studies、Plant and animal studies、Botany, Ecology, and Taxonomy Studies

Abstract Phylogenetic and functional diversity are theorised to increase invasion resistance. Experimentally testing whether plant communities higher in these components of diversity are less invasible is an important step for guiding restoration designs. To investigate how phylogenetic and functional diversity of vegetation affect invasion resistance in a restoration setting, we used experimental prairie restoration plots. The experiment crossed three levels of phylogenetic diversity with two levels of functional diversity while species richness was held constant. We allowed invaders to colonise plots; these included native species from neighbouring plots and non‐native invasive species from a surrounding old field. We tested if invader biomass was influenced by phylogenetic and functional diversity, and phylogenetic and hierarchical trait distances between invaders and planted species. We binned each invader into three categories: native species from neighbouring experimental plots ( site‐specific invaders ), native species not part of the experimental species pool ( native invaders ) or non‐native species ( non‐native invaders ). Counter to expectation, both non‐native and native invaders became more abundant in more phylogenetically diverse plots. However, plots with higher abundance of planted Asteraceae, a dominant family of the tallgrass prairie, had lower invader biomass for both native and non‐native invaders. We also found that hierarchical trait differences shaped ...