气候变化领域集成服务门户(CCPortal): Temperature and CO2 interactively drive shifts in the compositional and functional structure of peatland protist communities

CCPortal

DOI	10.1111/gcb.17203
	Temperature and CO2 interactively drive shifts in the compositional and functional structure of peatland protist communities
	Kilner, Christopher L.; Carrell, Alyssa A.; Wieczynski, Daniel J.; Votzke, Samantha; DeWitt, Katrina; Yammine, Andrea; Shaw, Jonathan; Pelletier, Dale A.; Weston, David J.; Gibert, Jean P.
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	3
卷号	30 期号:3
英文摘要	Microbes affect the global carbon cycle that influences climate change and are in turn influenced by environmental change. Here, we use data from a long-term whole-ecosystem warming experiment at a boreal peatland to answer how temperature and CO2 jointly influence communities of abundant, diverse, yet poorly understood, non-fungi microbial Eukaryotes (protists). These microbes influence ecosystem function directly through photosynthesis and respiration, and indirectly, through predation on decomposers (bacteria and fungi). Using a combination of high-throughput fluid imaging and 18S amplicon sequencing, we report large climate-induced, community-wide shifts in the community functional composition of these microbes (size, shape, and metabolism) that could alter overall function in peatlands. Importantly, we demonstrate a taxonomic convergence but a functional divergence in response to warming and elevated CO(2)with most environmental responses being contingent on organismal size: warming effects on functional composition are reversed by elevated CO2 and amplified in larger microbes but not smaller ones. These findings show how the interactive effects of warming and rising CO2 levels could alter the structure and function of peatland microbial food webs-a fragile ecosystem that stores upwards of 25% of all terrestrial carbon and is increasingly threatened by human exploitation.
英文关键词	climate change; climate interactions; community ecology; functional traits; microbial diversity; peatlands; protists
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001179159600001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309285
作者单位	Duke University; United States Department of Energy (DOE); Oak Ridge National Laboratory; Duke University
推荐引用方式 GB/T 7714	Kilner, Christopher L.,Carrell, Alyssa A.,Wieczynski, Daniel J.,et al. Temperature and CO2 interactively drive shifts in the compositional and functional structure of peatland protist communities[J],2024,30(3).
APA	Kilner, Christopher L..,Carrell, Alyssa A..,Wieczynski, Daniel J..,Votzke, Samantha.,DeWitt, Katrina.,...&Gibert, Jean P..(2024).Temperature and CO2 interactively drive shifts in the compositional and functional structure of peatland protist communities.GLOBAL CHANGE BIOLOGY,30(3).
MLA	Kilner, Christopher L.,et al."Temperature and CO2 interactively drive shifts in the compositional and functional structure of peatland protist communities".GLOBAL CHANGE BIOLOGY 30.3(2024).