干旱区生态环境知识资源中心(Arid): Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert

Arid

DOI	10.3389/fmicb.2020.537960
	Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert
	Sohm, Jill A.; Niederberger, Thomas D.; Parker, Alexander E.; Tirindelli, Joelle; Gunderson, Troy; Cary, Stephen Craig; Capone, Douglas G.; Carpenter, Edward J.
通讯作者	Sohm, JA
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2020
卷号	11
英文摘要	Cyanobacterial mats in the Antarctic Dry Valleys are photosynthetic microbial ecosystems living at the extreme of conditions on Earth with respect to temperature, light, water and nutrient availability. They are metabolically active for about 8 weeks during the austral summer when temperatures briefly rise above freezing and glacial and lake melt waters are available. There is much to learn about the biogeochemical impact of mats in these environments and the microbial communities associated with them. Our data demonstrate that these mats attain surprisingly high rates of carbon (CO2) and dinitrogen (N-2) fixation when liquid water is available, in some cases comparable to rates in warmer temperate or tropical environments. C and N-2 fixation in Dry Valley mats in turn substantially elevate dissolved organic C and inorganic N pools and thereby promote enhanced microbial secondary production. Moreover, the microbial community fingerprint of these mats is unique compared with the more ubiquitous dry soils that do not contain mats. Components of the heterotrophic microbiota may also contribute substantially to N inputs through N-2 fixation.
英文关键词	Dry Valleys cyanobacteria microbial mats meltwater streams MATS diazotrophs
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000587815900001
WOS关键词	NITROGEN-FIXATION ; TAYLOR VALLEY ; HYPORHEIC EXCHANGE ; MELTWATER STREAMS ; INORGANIC CARBON ; SOIL CRUSTS ; ECOSYSTEMS ; MARINE ; DYNAMICS
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327422
作者单位	[Sohm, Jill A.; Gunderson, Troy; Capone, Douglas G.] Univ Southern Calif, Dept Biol Sci, Marine & Environm Biol Sect, Los Angeles, CA 90007 USA; [Sohm, Jill A.] Univ Southern Calif, Environm Studies Program, Los Angeles, CA 90007 USA; [Niederberger, Thomas D.; Cary, Stephen Craig] Univ Delaware, Coll Earth Ocean & Environm, Lewes, DE 19958 USA; [Parker, Alexander E.; Tirindelli, Joelle; Carpenter, Edward J.] San Francisco State Univ, Estuary & Ocean Sci Ctr, Tiburon, CA 94920 USA; [Parker, Alexander E.] Calif State Univ Maritime Acad, Dept Sci & Math, Vallejo, CA 94590 USA; [Cary, Stephen Craig] Univ Waikato, Int Ctr Terr Antarctic Res, Hamilton, New Zealand
推荐引用方式 GB/T 7714	Sohm, Jill A.,Niederberger, Thomas D.,Parker, Alexander E.,et al. Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert[J],2020,11.
APA	Sohm, Jill A..,Niederberger, Thomas D..,Parker, Alexander E..,Tirindelli, Joelle.,Gunderson, Troy.,...&Carpenter, Edward J..(2020).Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert.FRONTIERS IN MICROBIOLOGY,11.
MLA	Sohm, Jill A.,et al."Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert".FRONTIERS IN MICROBIOLOGY 11(2020).