气候变化领域集成服务门户(CCPortal): Climate mediates continental scale patterns of stream microbial functional diversity

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DOI	10.1186/s40168-020-00873-2
	Climate mediates continental scale patterns of stream microbial functional diversity
	Picazo, Felix; Vilmi, Annika; Aalto, Juha; Soininen, Janne; Casamayor, Emilio O.; Liu, Yongqin; Wu, Qinglong; Ren, Lijuan; Zhou, Jizhong; Shen, Ji; Wang, Jianjun
通讯作者	Wang, JJ (通讯作者)
发表日期	2020
ISSN	2049-2618
卷号	8 期号:1
英文摘要	Background Understanding the large-scale patterns of microbial functional diversity is essential for anticipating climate change impacts on ecosystems worldwide. However, studies of functional biogeography remain scarce for microorganisms, especially in freshwater ecosystems. Here we study 15,289 functional genes of stream biofilm microbes along three elevational gradients in Norway, Spain and China. Results We find that alpha diversity declines towards high elevations and assemblage composition shows increasing turnover with greater elevational distances. These elevational patterns are highly consistent across mountains, kingdoms and functional categories and exhibit the strongest trends in China due to its largest environmental gradients. Across mountains, functional gene assemblages differ in alpha diversity and composition between the mountains in Europe and Asia. Climate, such as mean temperature of the warmest quarter or mean precipitation of the coldest quarter, is the best predictor of alpha diversity and assemblage composition at both mountain and continental scales, with local non-climatic predictors gaining more importance at mountain scale. Under future climate, we project substantial variations in alpha diversity and assemblage composition across the Eurasian river network, primarily occurring in northern and central regions, respectively. Conclusions We conclude that climate controls microbial functional gene diversity in streams at large spatial scales; therefore, the underlying ecosystem processes are highly sensitive to climate variations, especially at high latitudes. This biogeographical framework for microbial functional diversity serves as a baseline to anticipate ecosystem responses and biogeochemical feedback to ongoing climate change.
关键词	BETA-DIVERSITY ELEVATIONAL GRADIENTS SPECIES RICHNESS SOIL CARBON COMMUNITY WATER DECOMPOSITION BIODIVERSITY TEMPERATURE REGRESSION
英文关键词	Stream biofilm; Elevational gradients; Microbial functional genes; Macroecology; Climate change
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000542238100001
来源期刊	MICROBIOME
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260103
推荐引用方式 GB/T 7714	Picazo, Felix,Vilmi, Annika,Aalto, Juha,et al. Climate mediates continental scale patterns of stream microbial functional diversity[J]. 中国科学院青藏高原研究所,2020,8(1).
APA	Picazo, Felix.,Vilmi, Annika.,Aalto, Juha.,Soininen, Janne.,Casamayor, Emilio O..,...&Wang, Jianjun.(2020).Climate mediates continental scale patterns of stream microbial functional diversity.MICROBIOME,8(1).
MLA	Picazo, Felix,et al."Climate mediates continental scale patterns of stream microbial functional diversity".MICROBIOME 8.1(2020).