Effects of native species richness on reproduction of invasive Bidens pilosa vary with nutrient supply  

作　　者：Fang‑Lei Gao Sergio Roiloa Jiangbao Xia Jiayun Ren Meiling Zou Ximei Zhao Fei‑Hai Yu 

机构地区：[1]Shandong Key Laboratory of Eco‑Environmental Science for the Yellow River Delta,Shandong University of Aeronautics,Binzhou 256603,China [2]BioCost Group,Department of Biology,Faculty of Science,Universidade da Coruña,15071 A Coruña,Spain [3]College of Life and Environmental Engineering,Shandong University of Aeronautics,Binzhou 256603,China [4]Zhejiang Province Key Laboratory of Plant Evolutionary Ecology and Conservation,Institute of Wetland Ecology&Clone Ecology,Taizhou University,Taizhou 318000,China

出　　处：《Ecological Processes》2024年第3期67-76,共10页生态过程(英文)

基　　金：supported by the National Natural Science Foundation of China(32001302);Startup Project for Doctor’s Scientifc Research of Binzhou University(2019Y35);the Innovation and Training Program of University Students of Shandong Province in 2021(S202110449140).

摘　　要：Background Both increasing native species diversity and reducing nutrient availability can increase the ability of native plant communities to resist alien plant invasions. Furthermore, native species diversity and nutrient availabil-ity may interact to influence alien plant invasions. So far, however, little is known about the interactive effect of spe-cies diversity and nutrient availability on reproduction of alien invasive plants. We constructed native plant communi-ties with one, four or eight species under low and high nutrient supply and then let them be invaded by the invasive alien plant Bidens pilosa.Results At both high and low nutrient supply, increasing native species richness significantly increased aboveground biomass of the native plant community and decreased aboveground biomass and biomass proportion of the invader B. pilosa. Reproductive biomass of B. pilosa decreased significantly with increasing native species richness under high nutrient supply, but this effect was not observed under low nutrient supply. Net biodiversity effect on seed mass of B. pilosa decreased significantly with increasing native species diversity under high nutrient supply, but not under low nutrient supply. This was mainly because the selection effect became dominant with increasing species richness under high nutrient supply.Conclusions Our study suggest that native species richness and nutrient supply can interact to influence repro-duction of invasive alien plant species and that measures to help maintain a high level of native species richness and to reduce nutrient supply could be useful for efficient invasive plant control.

关 键 词：Biodiversity efect INVASIBILITY Invasive alien plant Nutrient availability Species diversity 

分 类 号：Q948[生物学—植物学]