Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System

Whether bacterioplankton are assembled in the same way as microeukaryotes is a key question that has been answered only partially in microbial ecology. In particular, relating distribution patterns to the underlying ecological processes for plankton communities in highly dynamic ecosystems, such as...

Full description

Bibliographic Details
Main Authors:	Alain Isabwe, Kexin Ren, Yongming Wang, Feng Peng, Huihuang Chen, Jun Yang
Format:	Article
Language:	English
Published:	MDPI AG 2019-05-01
Series:	Water
Subjects:	bacterioplankton microeukaryotes community assembly subtropical river subtropical reservoir dispersal limitation
Online Access:	https://www.mdpi.com/2073-4441/11/6/1127

id	doaj-17b893d5c2964966af2b3252364f9585
record_format	Article
spelling	doaj-17b893d5c2964966af2b3252364f95852020-11-24T21:27:42ZengMDPI AGWater2073-44412019-05-01116112710.3390/w11061127w11061127Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir SystemAlain Isabwe0Kexin Ren1Yongming Wang2Feng Peng3Huihuang Chen4Jun Yang5Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaAquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaAquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaAquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaAquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaAquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaWhether bacterioplankton are assembled in the same way as microeukaryotes is a key question that has been answered only partially in microbial ecology. In particular, relating distribution patterns to the underlying ecological processes for plankton communities in highly dynamic ecosystems, such as river−reservoirs subjected to anthropogenic impacts, remains largely unstudied. Here, we analyzed taxonomic distribution patterns, and unraveled community assembly processes underlying the core and random bacterioplankton and microeukaryotes from a subtropical river−reservoir system. These plankton domains were modelled using the spatial abundance distributions (SpADs) of the operational taxonomic units (OTUs) as a proxy for abundant and rare taxa delineation. Both bacterioplankton and microeukaryote plankton communities exhibited significant distance−decay relationships, and samples were grouped depending on reservoir or river habitats. The neutral community model showed that 35−45% of the plankton community variation could be explained by neutral processes. The phylogenetic null model revealed that dispersal limitation accounted for the largest percentage of pairwise comparisons (42−68%), followed by environmental selection (18−25%). We concluded that similar prevalence of ecological processes acting on particular subsets of the bacterioplankton and microeukaryotes might have resulted from similar responses to environmental change, potentially induced by human activities in the watershed.https://www.mdpi.com/2073-4441/11/6/1127bacterioplanktonmicroeukaryotescommunity assemblysubtropical riversubtropical reservoirdispersal limitation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Alain Isabwe Kexin Ren Yongming Wang Feng Peng Huihuang Chen Jun Yang
spellingShingle	Alain Isabwe Kexin Ren Yongming Wang Feng Peng Huihuang Chen Jun Yang Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System Water bacterioplankton microeukaryotes community assembly subtropical river subtropical reservoir dispersal limitation
author_facet	Alain Isabwe Kexin Ren Yongming Wang Feng Peng Huihuang Chen Jun Yang
author_sort	Alain Isabwe
title	Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System
title_short	Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System
title_full	Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System
title_fullStr	Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System
title_full_unstemmed	Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System
title_sort	community assembly mechanisms underlying the core and random bacterioplankton and microeukaryotes in a river–reservoir system
publisher	MDPI AG
series	Water
issn	2073-4441
publishDate	2019-05-01
description	Whether bacterioplankton are assembled in the same way as microeukaryotes is a key question that has been answered only partially in microbial ecology. In particular, relating distribution patterns to the underlying ecological processes for plankton communities in highly dynamic ecosystems, such as river−reservoirs subjected to anthropogenic impacts, remains largely unstudied. Here, we analyzed taxonomic distribution patterns, and unraveled community assembly processes underlying the core and random bacterioplankton and microeukaryotes from a subtropical river−reservoir system. These plankton domains were modelled using the spatial abundance distributions (SpADs) of the operational taxonomic units (OTUs) as a proxy for abundant and rare taxa delineation. Both bacterioplankton and microeukaryote plankton communities exhibited significant distance−decay relationships, and samples were grouped depending on reservoir or river habitats. The neutral community model showed that 35−45% of the plankton community variation could be explained by neutral processes. The phylogenetic null model revealed that dispersal limitation accounted for the largest percentage of pairwise comparisons (42−68%), followed by environmental selection (18−25%). We concluded that similar prevalence of ecological processes acting on particular subsets of the bacterioplankton and microeukaryotes might have resulted from similar responses to environmental change, potentially induced by human activities in the watershed.
topic	bacterioplankton microeukaryotes community assembly subtropical river subtropical reservoir dispersal limitation
url	https://www.mdpi.com/2073-4441/11/6/1127
work_keys_str_mv	AT alainisabwe communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem AT kexinren communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem AT yongmingwang communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem AT fengpeng communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem AT huihuangchen communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem AT junyang communityassemblymechanismsunderlyingthecoreandrandombacterioplanktonandmicroeukaryotesinariverreservoirsystem
_version_	1725973845391704064

Community Assembly Mechanisms Underlying the Core and Random Bacterioplankton and Microeukaryotes in a River–Reservoir System

Similar Items