Fluids from the oceanic crust support microbial activities within the deep biosphere

被引：65

作者：

Engelen, Bert ^{[1
]}

Ziegelmueller, Katja ^{[1
]}

Wolf, Lars ^{[1
]}

Koepke, Beate ^{[1
]}

Gittel, Antje ^{[1
]}

Cypionka, Heribert ^{[1
]}

Treude, Tina ^{[2
]}

Nakagawa, Satoshi ^{[3
]}

Inagaki, Fumio ^{[3
]}

Lever, Mark Alexander ^{[4
]}

Steinsbu, Bjorn Olav ^{[5
,6
]}

机构：

[1] Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, D-26129 Oldenburg, Germany

[2] Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany

[3] Japan Agcy Marine Earth Sci & Technol, SUGAR, Extremobiosphere Res Ctr, Yokosuka, Kanagawa 2370061, Japan

[4] Univ N Carolina, Dept Marine Sci, Chapel Hill, NC USA

[5] Univ Bergen, Ctr Geobiol, N-5007 Bergen, Norway

[6] Univ Bergen, Dept Earth Sci, N-5007 Bergen, Norway

来源：

GEOMICROBIOLOGY JOURNAL | 2008年 / 25卷 / 01期

关键词：

Integrated Ocean Drilling Program; JOIDES Resolution Expedition 301; deep biosphere; subsurface microbiology; oceanic crust; Juan de Fuca hydrogeology; hydrothermal fluids; microbial activity; AOM; sulfate reduction; methanogenesis; rates; MPN; exoenzymes;

D O I：

10.1080/01490450701829006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The importance of crustal fluid chemical composition in driving the marine deep subseafloor biosphere was examined in northeast Pacific ridge-flank sediments. At IODP Site U1301, sulfate from crustal fluids diffuses into overlying sediments, forming a transition zone where sulfate meets in situ-produced methane. Enhanced cell counts and metabolic activity suggest that sulfate stimulates microbial respiration, specifically anaerobic methane oxidation coupled to sulfate reduction. Cell counts and activity are also elevated in basement-near layers. Owing to the worldwide expansion of the crustal aquifer, we postulate that crustal fluids may fuel the marine deep subseafloor biosphere on a global scale.

引用

页码：56 / 66

页数：11

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