Distributional patterns of soil nematodes in relation to environmental variables in forest ecosystems

作     者：HAIFENG XIAO WENTING WANG SHANGWEN XIA Zhipeng Li Jianmin Gan Xiaodong Yang Haifeng Xiao;Wenting Wang;Shangwen Xia;Zhipeng Li;Jianmin Gan;Xiaodong Yang

作者机构：Key Laboratory of Tropical Forest EcologyXishuangbanna Tropical Botanical GardenChinese Academy of SciencesXishuangbanna 666303China Center of Plant EcologyCore Botanical GardensChinese Academy of SciencesXishuangbanna 666303China College of ChemistryBiology and Environmental EngineeringXiangnan UniversityChenzhou 423000China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Soil Ecology Letters》 (土壤生态学快报（英文）)

年 卷 期：2021年第3卷第2期

页      面：115-124页

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 09[农学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0901[农学-作物学] 0713[理学-生态学] 

基　　金：South-east Asia Biodiversity Research Institute,Chinese Academy of Sciences(Y4ZK111B01) the CAS 135 program(2017XTBG-T01) the Hunan Provincial Natural Science Foundation of China(No.2020JJ4564). 

主　　题：Nematode communities Spatial scales Driving factors High-throughput sequencing forest ecosystems 

摘      要：Understanding biodiversity and biogeographic distribution of soil fauna is an important topic in ecology.While nematode communities have been compared among ecosystems,knowledge remains limited about how environmental factors and nematode distributions are linked at different spatial scales.Hare,we employed high-throughput sequencing to compare nematode communities in tropical(Xishuangbanna),subtropical(Ailaoshan),and cold temperate spruce-fir(Lijiang)forest ecosystems with identical spatial sampling.Relationships between nematode communities and environmental factors were analyzed using redundancy analysis(RDA).Our results showed that nematode richness and diversity peaked in Xishuangbanna;however,no significant differences were observed in other two forest ecosystems.Bacterial feeders and Omnivores/Camivores(Om&Ca)had the lowest relative abundance,but the highest diversity,in Xishuangbanna,with the opposite pattem being detected for fungal and plant feeders.Our data also demonstrated that,for forest ecosystems,climate factors drive nematode communities distributions at the regional scale,while terrain and soil characteristics(including pH and nutrients)drive nematode communities distributions at local scales.This study improves our current understanding of key factors(environmental parameters)responsible for the biogeographical distribution of forest nematode communities at different spatial scales.