Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China.
Department of Biology, Case Western Reserve University, Cleveland, OH, 44106, USA.
Ecol Lett. 2018 Aug;21(8):1211-1220. doi: 10.1111/ele.13090. Epub 2018 May 28.
Biotic resistance may influence invasion success; however, the relative roles of species richness, functional or phylogenetic distance in predicting invasion success are not fully understood. We used biomass fraction of Chromolaena odorata, an invasive species in tropical and subtropical areas, as a measure of 'invasion success' in a series of artificial communities varying in species richness. Communities were constructed using species from Mexico (native range) or China (non-native range). We found strong evidence of biotic resistance: species richness and community biomass were negatively related with invasion success; invader biomass was greater in plant communities from China than from Mexico. Harvesting time had a greater effect on invasion success in plant communities from China than on those from Mexico. Functional and phylogenetic distances both correlated with invasion success and more functionally distant communities were more easily invaded. The effects of plant-soil fungi and plant allelochemical interactions on invasion success were species-specific.
生物抗性可能会影响入侵的成功；然而，物种丰富度、功能或系统发育距离在预测入侵成功方面的相对作用还不完全清楚。我们使用热带和亚热带地区的入侵物种黄顶菊的生物量分数作为一系列物种丰富度不同的人工群落中“入侵成功”的衡量标准。群落由来自墨西哥（本地范围）或中国（非本地范围）的物种组成。我们发现了生物抗性的有力证据：物种丰富度和群落生物量与入侵成功呈负相关；与来自墨西哥的群落相比，来自中国的群落中入侵物种的生物量更大。收获时间对来自中国的群落的入侵成功的影响大于对来自墨西哥的群落的影响。功能和系统发育距离都与入侵成功相关，功能差异更大的群落更容易被入侵。植物-土壤真菌和植物化感相互作用对入侵成功的影响是物种特异性的。
