Significant contribution of Archaea to extant biomass in marine subsurface sediments

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doi: 10.1038/nature07174
Author(s): Lipp, Julius S.; Morono, Yuki; Inagaki, Fumio; Hinrichs, Kai-Uwe
Author Affiliation(s): Primary:
University of Bremen, Department of Geosciences, Bremen, Federal Republic of Germany
Other:
Japan Agency for Marine-Earth Science and Technology, Japan
Volume Title: Nature (London)
Source: Nature (London), 454(7207), p.991-994. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 30 refs.; illus., incl. 1 table
Summary: A subsurface biosphere has been discovered down to depths of > 800m below sea floor in deeply buried marine sediments that were deposited tens of Ma ago. A diversity of Archaea and Bacteria indicates systematic links between the abundance and structure of microbial communities and sediment geochemistry. By combining lipid and DNA-based approaches specifically designed to meet analytical requirements of the deep marine subsurface, evidence is presented indicating that Archaea contribute substantially to the microbial biomass in this habitat. In subsurface samples from the Black Sea, Nankai Trough, Peru Margin, Hydrate Ridge, Cascadia Margin, Juan de Fuca, Demerara Rise and the Equatorial Pacific, concentrations of intact polar lipids (a measure of live bacterial biomass and proportional to those of TOC) declined with depth. An estimate is made of 90Pg of cellular C in the global marine subsurface biosphere.
Year of Publication: 2008
Research Program: IODP Integrated Ocean Drilling Program
ODP Ocean Drilling Program
Key Words: 06 Petrology, Sedimentary; 07 Marine Geology and Oceanography; Archaea; Bacteria; Biomass; DNA; East Pacific; Equatorial Pacific; Expedition 301; Extinct taxa; Fatty acids; Geochemistry; Integrated Ocean Drilling Program; Juan de Fuca Ridge; Leg 201; Lipids; Marine sediments; North Pacific; Northeast Pacific; Ocean Drilling Program; Ocean floors; Organic acids; Organic compounds; Pacific Ocean; Paleo-oceanography; Peru Margin; RNA; Sediments; Total organic carbon
Coordinates: N474500 N474600 W1274500 W1274600
S120500 N035000 W0775500 W1103500
Record ID: 2010029243
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom