Bathymetric gradient shapes the community composition rather than the species richness of deep-sea benthic ciliates

doi:10.1016/j.scitotenv.2020.142623

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生物分类与系统演化实验室

	Bathymetric gradient shapes the community composition rather than the species richness of deep-sea benthic ciliates
	Zhao, Feng 3,4,5; Filker, Sabine 1; Wang, Chunsheng 2; Xu, Kuidong 3,4,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-02-10
卷号	755 页码:11
关键词	Protist Source-sink dynamic Abyssal plain Benthic community Seamount Trench
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.142623
通讯作者	Xu, Kuidong(kxu@qdio.ac.cn)
英文摘要	The bathymetric gradient is one of the most important factors that regulate the distribution of life. However, community variations of benthic ciliates along bathymetric gradients in the deep sea remain rather unexplored. In this study, we hypothesize that in the deep sea, the bathymetric gradient shapes the benthic ciliate community composition rather than the species richness. Here, we evaluated the distribution patterns and drivers of benthic ciliate communities of an abyssal plain, a seamount, and a trench with water depths ranging from 800 m down to 6600 m by high throughput eDNA sequencing and statistical analyses. We observed no significant correlation between ciliate operated taxonomic unit (OTU) richness and water depth. A meta-analysis, which combined our previously published data from the neritic habitats, supports the notion that water depth exceeding 800 m has little effect on the richness of benthic ciliate species. In contrast, the composition of deep-sea ciliate communities was significantly distinct in different habitats along the bathymetric gradients. A SourceTracker analysis revealed extremely low connectivity among ciliate communities along the bathymetric gradients. More than 95% of the community dissimilarity in the deep-sea floor was attributed to species replacement, which might be caused by environmental sorting or historical constraints. Furthermore, the observed community variations could be ascribed more to water depth than to geographic distance. The findings imply that the strong force of environmental sorting along the bathymetric gradients and the low connectivity among the ciliate communities might lead to an isolated evolution. This could shape the community composition rather than the species richness, which is mainly determined by the limited nutrient availability and the extreme environmental conditions in the deep sea. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050203] ; National Natural Science Foundation of China[41930533]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000600786700048
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169941]
专题	海洋研究所_海洋生物分类与系统演化实验室
通讯作者	Xu, Kuidong
作者单位	1.Univ Kaiserslautern, Dept Mol Ecol, Kaiserslautern, Germany 2.Minist Not Resources, Inst Oceanog 2, Hangzhou, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Feng,Filker, Sabine,Wang, Chunsheng,et al. Bathymetric gradient shapes the community composition rather than the species richness of deep-sea benthic ciliates[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,755:11.
APA	Zhao, Feng,Filker, Sabine,Wang, Chunsheng,&Xu, Kuidong.(2021).Bathymetric gradient shapes the community composition rather than the species richness of deep-sea benthic ciliates.SCIENCE OF THE TOTAL ENVIRONMENT,755,11.
MLA	Zhao, Feng,et al."Bathymetric gradient shapes the community composition rather than the species richness of deep-sea benthic ciliates".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021):11.