干旱区生态环境知识资源中心(Arid): Importance of environmental factors over habitat connectivity in shaping bacterial communities in microbial mats and bacterioplankton in an Antarctic freshwater system

Arid

DOI	10.1093/femsec/fiab044
	Importance of environmental factors over habitat connectivity in shaping bacterial communities in microbial mats and bacterioplankton in an Antarctic freshwater system
	Ramoneda, Josep; Hawes, Ian; Pascual-Garcia, Alberto; Mackey, Tyler J.; Sumner, Dawn Y.; Jungblut, Anne D.
通讯作者	Jungblut, AD (corresponding author), Nat Hist Museum, Life Sci Dept, 18 Cromwell Rd, London SW7 5BD, England.
来源期刊	FEMS MICROBIOLOGY ECOLOGY
ISSN	0168-6496
EISSN	1574-6941
出版年	2021
卷号	97 期号:4
英文摘要	Freshwater ecosystems are considered hotspots of biodiversity in Antarctic polar deserts. Anticipated warming is expected to change the hydrology of these systems due to increased meltwater and reduction of ice cover, with implications for environmental conditions and physical connectivity between habitats. Using 16S rRNA gene sequencing, we evaluated microbial mat and planktonic communities within a connected freshwater system in the McMurdo Wright Valley, Antarctica, to determine the roles of connectivity and habitat conditions in controlling microbial assemblage composition. We examined communities from glacial Lake Brownworth, the perennially ice-covered Lake Vanda and the Onyx River, which connects the two. In Lake Vanda, we found distinct microbial assemblages occupying sub-habitats at different lake depths, while the communities from Lake Brownworth and Onyx River were structurally similar. Despite the higher physical connectivity and dispersal opportunities between bacterial communities in the shallow parts of the system, environmental abiotic conditions dominated over dispersal in driving community structure. Functional metabolic pathway predictions suggested differences in the functional gene potential between the microbial mat communities located in shallower and deeper water depths. The findings suggest that increasing temperatures and meltwater due to future climate change will affect bacterial diversity and functioning in Antarctic freshwater ecosystems.
英文关键词	biofilm bacterioplankton freshwater 16S rRNA gene McMurdo Dry Valleys Antarctica
类型	Article
语种	英语
开放获取类型	Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000644508800021
WOS关键词	MCMURDO DRY VALLEYS ; CLIMATE-CHANGE ; ASSEMBLY PROCESSES ; LAKE VANDA ; ICE SHELF ; DIVERSITY ; CYANOBACTERIA ; LANDSCAPE ; PONDS ; DNA
WOS类目	Microbiology
WOS研究方向	Microbiology
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350216
作者单位	[Ramoneda, Josep; Jungblut, Anne D.] Nat Hist Museum, Life Sci Dept, Cromwell Rd, London SW7 5BD, England; [Hawes, Ian] Univ Waikato, Coastal Marine Field Stn, 58 Cross Rd, Tauranga 3110, New Zealand; [Pascual-Garcia, Alberto] Swiss Fed Inst Technol, Inst Integrat Biol, Theoret Biol, Univ Str 16, CH-8006 Zurich, Switzerland; [Mackey, Tyler J.; Sumner, Dawn Y.] Univ Calif Davis, Dept Earth & Planetary Sci, One Shields Ave, Davis, CA 95618 USA; [Ramoneda, Josep] Swiss Fed Inst Aquat Sci & Technol Eawag, Dept Environm Microbiol, CH-8600 Dubendorf, Switzerland; [Mackey, Tyler J.] Univ New Mexico, Dept Earth & Planetary Sci, 221 Yale Blvd NE, Albuquerque, NM 87131 USA
推荐引用方式 GB/T 7714	Ramoneda, Josep,Hawes, Ian,Pascual-Garcia, Alberto,et al. Importance of environmental factors over habitat connectivity in shaping bacterial communities in microbial mats and bacterioplankton in an Antarctic freshwater system[J]. University of California, Davis,2021,97(4).
APA	Ramoneda, Josep,Hawes, Ian,Pascual-Garcia, Alberto,Mackey, Tyler J.,Sumner, Dawn Y.,&Jungblut, Anne D..(2021).Importance of environmental factors over habitat connectivity in shaping bacterial communities in microbial mats and bacterioplankton in an Antarctic freshwater system.FEMS MICROBIOLOGY ECOLOGY,97(4).
MLA	Ramoneda, Josep,et al."Importance of environmental factors over habitat connectivity in shaping bacterial communities in microbial mats and bacterioplankton in an Antarctic freshwater system".FEMS MICROBIOLOGY ECOLOGY 97.4(2021).