DOI: 10.1007/s00531-015-1148-4
Scopus记录号: 2-s2.0-84940958158
论文题名: Present and future of subsurface biosphere studies in lacustrine sediments through scientific drilling
作者: Ariztegui D. ; Thomas C. ; Vuillemin A.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期: 6 起始页码: 1655
结束页码: 1665
语种: 英语
英文关键词: Biosignatures
; Genomics
; Lakes
; Microbes
Scopus关键词: biosphere
; deep-sea sediment
; diagenesis
; drilling
; environmental change
; genomics
; geological record
; geomicrobiology
; lacustrine deposit
; microbial activity
; paleoclimate
; sedimentary basin
; Argentina
; Dead Sea
; Laguna Potrok Aike
; Lake Ohrid
; Lake Van
; Levantine Sea
; Mediterranean Sea
; Patagonia
; Santa Cruz [Argentina]
; Turkey
英文摘要: Recently, the discovery of active microbial life in deep-sea sediments has triggered a rapid development of the field known as the “deep biosphere.” Geomicrobiological investigations in lacustrine basins have also shown a substantial microbial impact on lake sediments similar to that described for the marine record. Although only 30 % of the lake sites drilled by the International Continental Drilling Program (ICDP) have included microbial investigations, these lakes cover a relatively wide range of salinities (from 0.15 to 33.8 %), pH (from 6.0 to 9.8) and environmental conditions (from very arid to humid subtropical conditions). Here, we analyze results of very recent ICDP lake sites including subsurface biosphere research from southern Patagonia (Laguna Potrok Aike) to the Levantine area (Dead Sea) as well as the East Anatolian high plateau (Lake Van) and Macedonia (Lake Ohrid). These various settings allow the examination of the impact of contrasting environments on microbial activity and their subsequent role during early diagenesis. Furthermore, they permit the identification of biosignatures of former microbial activity recorded in the sediments as well as investigating the impact of microbes in biogeochemical cycles. One of the general outcomes of these preliminary investigations is data to support the hypothesis that microbes react to climatically driven environmental changes that have a direct impact on their subsurface distribution and diversity. This is clear at conspicuous levels associated with well-known climatic periods such as the Medieval Climatic Anomaly or the Little Ice Age. Although more research is needed, this relationship between prevailing microbial assemblages and different climatic settings appears to dominate the lacustrine sites studied until to date. © 2015, The Author(s). URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940958158&doi=10.1007%2fs00531-015-1148-4&partnerID=40&md5=0af1c04e97299773cc0ebbf26995db8d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70274
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth Sciences, University of Geneva, rue des Maraichers 13, Geneva, Switzerland; Section 4.5 Geomicrobiology, Helmholtz Centre Potsdam, GFZ German Research for Geosciences, Potsdam, Germany
Recommended Citation:
Ariztegui D.,Thomas C.,Vuillemin A.. Present and future of subsurface biosphere studies in lacustrine sediments through scientific drilling[J]. International Journal of Earth Sciences,2015-01-01,104(6)