Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps  in the Northern South China Sea

Geoscience ›› 2007, Vol. 21 ›› Issue (1): 101-104.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps in the Northern South China Sea

SU Xin¹, CHEN Fang², WEI Shi-ping¹, ZHANG Yong¹, CHENG Si-hai², LU Hong-feng², HUANG Yong-yang²

1School of Marine Geosciences, China University of Geosciences, Beijing100083,China;
2Guangzhou Marine Geological Survey, Guangzhou,Guangdong510760,China

Received:2006-12-10 Revised:2007-01-20 Online:2007-01-20 Published:2007-01-20

Abstract

Abstract:

A geomicrobiological study was carried out to investigate the relationship between variations of bacterial abundance and methane concentration. Bacterial samples from 2 gravity cores in cold seep areas on the continental slope of the Northern South China Sea, collected during 2006 “Haiyang 4” cruise, were analyzed by means of fluorescence microscopy. The result shows that bacterial abundance ranges from 10⁶ cells／g to 10⁵ cells／g sediment, and it is higher at the methane vent site than that of at the site far from a cold seep. Within the same sediment core from the methane vent site, bacterial abundance increases in the interval where methane concentration increased. This preliminary result suggests that variation in bacterial abundance seems to be sensitive to variations of methane concentration in cold seep sediments.

Key words: bacterial abundance, methane concentration, sediment, cold seep, the South China Sea

CLC Number:

P736

SU Xin, CHEN Fang, WEI Shi-ping, ZHANG Yong, CHENG Si-hai. Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps in the Northern South China Sea[J]. Geoscience, 2007, 21(1): 101-104.

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Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps in the Northern South China Sea

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