FN Archimer Export Format
PT J
TI Microbial methane oxidation and sulfate reduction at cold seeps of the deep Eastern Mediterranean Sea
BT 
AF OMOREGIE, Enoma O.
   NIEMANN, Helge
   MASTALERZ, Vincent
   DE LANGE, Gert J.
   STADNITSKAIA, Alina
   MASCLE, Jean
   FOUCHER, Jean-Paul
   BOETIUS, Antje
AS 1:1,2;2:1;3:3;4:3;5:4;6:5;7:6;8:1,2,7;
FF 1:;2:;3:;4:;5:;6:;7:PDG-DOP-DCB-GM-LGG;8:;
C1 Max Planck Inst Marine Microbiol, Bremen, Germany.
   Jacobs Univ Bremen, Bremen, Germany.
   Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands.
   NIOZ, Royal Netherlands Inst Sea Res, Texel, Netherlands.
   Geosci Azur, Villefranche Sur Mer, France.
   IFREMER, Ctr Brest, Dept Marine Geosci, Plouzane, France.
   Alfred Wegener Inst Polar & Marine Res, D-2850 Bremerhaven, Germany.
C2 MAX PLANCK INST, GERMANY
   UNIV JACOBS BREMEN, GERMANY
   UNIV UTRECHT, NETHERLANDS
   INST SEA RESEARCH (NIOZ), NETHERLANDS
   OBSERV OCEANOL VILLEFRANCHE, FRANCE
   IFREMER, FRANCE
   INST A WEGENER, GERMANY
SI BREST
SE PDG-DOP-DCB-GM-LGG
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
IF 2.521
TC 57
UR https://archimer.ifremer.fr/doc/00000/11087/7910.pdf
LA English
DT Article
CR NAUTINIL
BO L'Atalante
DE ;methane oxidation;sulfate reduction;Archaea;cold seeps;mud volcano;pockmarks;Nile Deep Sea Fan
AB The Eastern Mediterranean hosts a variety of active cold seep systems, such as gas chimneys, mud volcanoes and pockmarks, in water depths of 500 to 3200 m. As part of the NAUTINIL expedition in 2003, the sediments of cold seeps on the Nile Deep Sea Fan (NDSF) were sampled for the first time for biogeochemical and microbiological analyses. Here we compare rates of the anaerobic oxidation of methane (AOM) and sulfate reduction (SR) as well as the microbial community structure of a variety of cold seep systems including mud volcanoes, pockmarks and brine seeps. Our results revealed strong differences in microbial activity among the different seep systems of the Eastern, Central and Western provinces of the NDSF, as well as the Olimpi field (Central Mediterranean Ridge). Integrated over a sediment depth of 10 cm below the seafloor, SR rates ranged from 0.1-66 mmol m(-2) d(-1) and AOM rates from 0.1-3.6 mmol m(-2) d(-1). SR was often considerably higherthan methane oxidation, indicating that electron donors other than methane were utilized. In general, the lowest rates were associated with pockmarks and carbonate pavements, and highest rates with bacterial mats above the gassy sediments of mud volcano centers. 16S rRNA gene analysis and fluorescence in situ hybridization (FISH), revealed the presence of all known groups of marine methane oxidizing Archaea (i.e. ANME-1, -2,-3) and also of methane oxidizing Bacteria (i.e. Methylobacter sp. and relatives) in some seep sediments. Presumably syntrophic sulfate-reducing bacterial partners of ANMEs were also detected in association with the ANMEs. Several ANMES formed consortia with unknown bacterial partners. The microbial community structure reflected the presence of typical seep microorganisms at all sites investigated, but differed to varying extents between the different types of seeps. Despite the high availability of methane and sulfate, methanotrophic microbial activity and biomass were lower at the seeps of the Eastern Mediterranean compared to those of other continental margins for unknown reasons.
PY 2009
PD JUL
SO Marine Geology
SN 0025-3227
PU Elsevier Science Bv
VL 261
IS 1-4
UT 000267312700010
BP 114
EP 127
DI 10.1016/j.margeo.2009.02.001
ID 11087
ER

EF