Aboveground herbivory increases soil nematode abundance of an invasive plant

作     者：Jia Liu Susu Dai Wei Huang Jianqing Ding Jia Liu;Susu Dai;Wei Huang;Jianqing Ding

作者机构：CAS Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhan 430074HubeiChina University of Chinese Academy of SciencesBeijing 100049China Core Botanical GardenChinese Academy of SciencesWuhan 430074HubeiChina School of Life SciencesHenan UniversityKaifeng 475004HenanChina 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2020年第13卷第4期

页      面：405-412页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by The National Key Research and Development Program of China(2017YFC1200100 to J.D.) the National Natural Science Foundation of China(31822007 to W.H.) 

主　　题：aboveground insect herbivores soil nematodes trophic groups plant invasions temporal change 

摘      要：Aims Plant invasions have the potential to affect the community structure of soil nematodes,but little is known about whether such effects are mediated by aboveground herbivores since invasive plants are not completely released from herbivores in the introduced *** this study,we explored how aboveground insect herbivores mediated the effect of invasive plant Alternanthera philoxeroides on soil nematodes and examined the temporal variations of such an herbivory-elicited *** We conducted a greenhouse experiment by applying different herbivory treatments(no insect herbivores,specialist Agasicles hygrophila and generalist Cassida piperata)to potted ***,and then measured the community compositions of soil nematodes in corresponding pots on the 1st,10th and 20th day after removal of all *** addition,the carbon content of roots and root exudate of *** were also *** Findings Our results showed that aboveground herbivory significantly increased the abundance of soil nematodes of ***,likely plant feeder nematodes,after insect herbivores were removed immediately(1st day).However,such impacts waned with time and there was no significant difference at later stages(10th and 20th days).Furthermore,the effects of specialist *** and generalist *** herbivory were consistent on the abundance of soil ***,our results suggest that aboveground insect herbivores have the potential to alter the effects of plant invasions on soil nematodes,but such impacts are ***,our study highlighted the importance of integrating the effects of above-and belowground organisms when evaluating the impacts of plant invasions.