气候变化领域集成服务门户(CCPortal): Biogeographic survey of soil bacterial communities across Antarctica

CCPortal

DOI	10.1186/s40168-023-01719-3
	Biogeographic survey of soil bacterial communities across Antarctica
	Varliero, Gilda; Lebre, Pedro H.; Adams, Byron; Chown, Steven L.; Convey, Peter; Dennis, Paul G.; Fan, Dandan; Ferrari, Belinda; Frey, Beat; Hogg, Ian D.; Hopkins, David W.; Kong, Weidong; Makhalanyane, Thulani; Matcher, Gwynneth; Newsham, Kevin K.; Stevens, Mark I.; Weigh, Katherine V.; Cowan, Don A.
发表日期	2024
ISSN	2049-2618
起始页码	12
结束页码	1
卷号	12 期号:1
英文摘要	BackgroundAntarctica and its unique biodiversity are increasingly at risk from the effects of global climate change and other human influences. A significant recent element underpinning strategies for Antarctic conservation has been the development of a system of Antarctic Conservation Biogeographic Regions (ACBRs). The datasets supporting this classification are, however, dominated by eukaryotic taxa, with contributions from the bacterial domain restricted to Actinomycetota and Cyanobacteriota. Nevertheless, the ice-free areas of the Antarctic continent and the sub-Antarctic islands are dominated in terms of diversity by bacteria. Our study aims to generate a comprehensive phylogenetic dataset of Antarctic bacteria with wide geographical coverage on the continent and sub-Antarctic islands, to investigate whether bacterial diversity and distribution is reflected in the current ACBRs.ResultsSoil bacterial diversity and community composition did not fully conform with the ACBR classification. Although 19% of the variability was explained by this classification, the largest differences in bacterial community composition were between the broader continental and maritime Antarctic regions, where a degree of structural overlapping within continental and maritime bacterial communities was apparent, not fully reflecting the division into separate ACBRs. Strong divergence in soil bacterial community composition was also apparent between the Antarctic/sub-Antarctic islands and the Antarctic mainland. Bacterial communities were partially shaped by bioclimatic conditions, with 28% of dominant genera showing habitat preferences connected to at least one of the bioclimatic variables included in our analyses. These genera were also reported as indicator taxa for the ACBRs.ConclusionsOverall, our data indicate that the current ACBR subdivision of the Antarctic continent does not fully reflect bacterial distribution and diversity in Antarctica. We observed considerable overlap in the structure of soil bacterial communities within the maritime Antarctic region and within the continental Antarctic region. Our results also suggest that bacterial communities might be impacted by regional climatic and other environmental changes. The dataset developed in this study provides a comprehensive baseline that will provide a valuable tool for biodiversity conservation efforts on the continent. Further studies are clearly required, and we emphasize the need for more extensive campaigns to systematically sample and characterize Antarctic and sub-Antarctic soil microbial communities.APsmQ8MphSAgg4BzZyqdNTVideo AbstractConclusionsOverall, our data indicate that the current ACBR subdivision of the Antarctic continent does not fully reflect bacterial distribution and diversity in Antarctica. We observed considerable overlap in the structure of soil bacterial communities within the maritime Antarctic region and within the continental Antarctic region. Our results also suggest that bacterial communities might be impacted by regional climatic and other environmental changes. The dataset developed in this study provides a comprehensive baseline that will provide a valuable tool for biodiversity conservation efforts on the continent. Further studies are clearly required, and we emphasize the need for more extensive campaigns to systematically sample and characterize Antarctic and sub-Antarctic soil microbial communities.APsmQ8MphSAgg4BzZyqdNTVideo Abstract
英文关键词	Antarctic Conservation Biogeographic Regions (ACBRs); Antarctic soil microbiome; Biogeography; Microbial diversity; Regionalization; Soils; Bioclimatic variables
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:001140979800001
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/306664
作者单位	University of Pretoria; Swiss Federal Institutes of Technology Domain; Swiss Federal Institute for Forest, Snow & Landscape Research; Brigham Young University; Brigham Young University; Monash University; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC British Antarctic Survey; University of Johannesburg; University of Queensland; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; University of New South Wales Sydney; University of Waikato; Scotland's Rural College; University of Pretoria; Rhodes University; South Australian Museum; University of Adelaide
推荐引用方式 GB/T 7714	Varliero, Gilda,Lebre, Pedro H.,Adams, Byron,et al. Biogeographic survey of soil bacterial communities across Antarctica[J]. 中国科学院青藏高原研究所,2024,12(1).
APA	Varliero, Gilda.,Lebre, Pedro H..,Adams, Byron.,Chown, Steven L..,Convey, Peter.,...&Cowan, Don A..(2024).Biogeographic survey of soil bacterial communities across Antarctica.MICROBIOME,12(1).
MLA	Varliero, Gilda,et al."Biogeographic survey of soil bacterial communities across Antarctica".MICROBIOME 12.1(2024).