Distribution and influencing factors of microeukaryote in different water layers of the southwestern Indian Ocean Ridge

作     者：Zhong LI Chao YUAN Ping SUN Mingzhu FU Xuelei ZHANG Zongling WANG Qinzeng XU 

作者机构：College of Environmental Science and EngineeringOcean University of ChinaQingdao 266100China Key Laboratory of Marine Eco-Environmental Science and TechnologyFirst Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2024年第42卷第5期

页      面：1525-1539页

核心收录：

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

基　　金：Supported by the China Ocean Mineral Resources R&D Association(Nos.DY135-E2-4-04,DY135-E2-4-06) the Global Change and AirSea Interaction Program(Nos.GASI-03-01-03-03,GASI-02-IND-STSspr) 

主　　题：microeukaryote southwestern Indian Ocean community structure environmental factor biotic interaction Dinoflagellata 

摘      要：Microeukaryotes play a vital role in shaping marine ecosystems,especially in marine productivity,the microbial food web,and carbon *** Indian Ocean is one of the largest oligotrophic areas in the world,but little is known about the biodiversity of microeukaryotes in the *** community composition and geographical distribution of microeukaryotes collected from the surface(SUR)and deep chlorophyll maximum(DCM)layers in the southwestern Indian Ocean were studied using high-throughput sequencing of the 18S rRNA *** metagenomic data helped quantify the impact of environmental factors on microeukaryotic *** relative abundance of different taxa groups exhibited distinct patterns between SUR and DCM layers,except for the most dominant Dinoflagellata that accounted for more than 40.6%abundance in each *** was much more abundant in the nutrient-rich DCM layer than the SUR *** community similarity of microeukaryotes decreased with increasing of geographic distance,whereas the temperature and inorganic nitrogen were the most important environmental parameters to community *** communities were more influenced by dispersal limitations and rare communities were more responsive to environmental *** network analyses revealed strong biotic interactions indicative of parasitism,predation and competition,and their contribution to microeukaryotic population in diverse ***,this study provided insights into the biodiversity of microeukaryotes by characterizing the differences between water layers and identifying the driving factors in the ocean.