Knowledge Resource Center for Ecological Environment in Arid Area
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
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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). |
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