Habitat fragmentation differentially affects invasive and native plant diversity in a human-dominated wetland island system

作者：Jinliang Liu, Mengyuan Chen, Lu Wang, Tengteng Liu, Xinjie Jin, Fei‐Hai Yu, Yonghua Zhang · 发表于：Acta Botanica Yunnanica · 年份：2024 · DOI：10.1016/j.pld.2024.09.003 · 被引用次数：6 · 研究领域：Coastal wetland ecosystem dynamics、Ecology and Vegetation Dynamics Studies、Land Use and Ecosystem Services

Managing invasive species requires identifying the factors that determine alien species invasion success. This study investigates how anthropogenic and biogeographical factors influence alien plant invasion in the Sanyang Wetlands, a human-dominated island system in Wenzhou City, China. Specifically, we analyzed whether human activities (e.g., habitat heterogeneity, proportion of road area, and cultivation) and island characteristics (e.g., island area, isolation) affect the diversity of native and invasive plant species similarly. We also assessed the applicability of the equilibrium theory of island biogeography to invasive plant species diversity and examined how these factors affect invasive plant species with different dispersal syndromes (anemochore, zoochore, and autochore). We found that both invasive and native species richness positively correlate with island area, habitat heterogeneity, and proportion of road area. However, although native species richness was negatively correlated with isolation, invasive species richness was not. The diversity and composition of invasive species with different dispersal syndromes were determined by different variables; for example, the composition and diversity of zoochores was increased by habitat heterogeneity, while anemochore species richness was increased by the proportion of road area, whereas anemochore species composition was influenced by distance to the nearest island. We conclude that habitat fragmentation differential...