FN Archimer Export Format
PT J
TI Methanogenic diversity and activity in hypersaline sediments of the centre of the Napoli mud volcano, Eastern Mediterranean Sea
BT 
AF LAZAR, Cassandre Sara
   PARKES, R. John
   CRAGG, Barry A.
   L HARIDON, Stephane
   TOFFIN, Laurent
AS 1:1,3;2:2;3:2;4:1,3;5:1;
FF 1:;2:;3:;4:;5:PDG-REM-EEP-LMEE;
C1 Univ Bretagne Occidentale, Lab Microbiol Environm Extremes, Dept Etud Environm Profonds, UMR 6197,Ifremer Ctr Brest, F-29280 Plouzane, France
   Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3YE, S Glam, Wales
C2 UBO, FRANCE
   UNIV CARDIFF, UK
   IFREMER, FRANCE
SI BREST
SE PDG-REM-EEP-LMEE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 5.843
TC 47
UR https://archimer.ifremer.fr/doc/00043/15426/18003.pdf
LA English
DT Article
CR MEDECO
BO Pourquoi pas ?
AB Submarine mud volcanoes are a significant source of methane to the atmosphere. The Napoli mud volcano, situated in the brine-impacted Olimpi Area of the Eastern Mediterranean Sea, emits mainly biogenic methane particularly at the centre of the mud volcano. Temperature gradients support the suggestion that Napoli is a cold mud volcano with moderate fluid flow rates. Biogeochemical and molecular genetic analyses were carried out to assess the methanogenic activity rates, pathways and diversity in the hypersaline sediments of the centre of the Napoli mud volcano. Methylotrophic methanogenesis was the only significant methanogenic pathway in the shallow sediments (0-40 cm) but was also measured throughout the sediment core, confirming that methylotrophic methanogens could be well adapted to hypersaline environments. Hydrogenotrophic methanogenesis was the dominant pathway below 50 cm; however, low rates of acetoclastic methanogenesis were also present, even in sediment layers with the highest salinity, showing that these methanogens can thrive in this extreme environment. PCR-DGGE and methyl coenzyme M reductase gene libraries detected sequences affiliated with anaerobic methanotrophs (mainly ANME-1) as well as Methanococcoides methanogens. Results show that the hypersaline conditions in the centre of the Napoli mud volcano influence active biogenic methane fluxes and methanogenic/methylotrophic diversity.
PY 2011
PD AUG
SO Environmental Microbiology
SN 1462-2912
PU Wiley-blackwell
VL 13
IS 8
UT 000294075600012
BP 2078
EP 2091
DI 10.1111/j.1462-2920.2011.02425.x
ID 15426
ER

EF