Diversity of achaea communities in mud wedge sediments from the Yellow River Delta
黄河三角洲泥质沉积区表层沉积物古菌分布特征

Archaeal 16S rDNA clone libraries were constructed from sediments of different location to elucidate the distribution and diversity of archaea in the Yellow River Delta coastal mud wedge of the Bohai Sea and the Yellow Sea. A total of 568 archaeal 16S rDNA clones were examined and a total of 73 OTUs were obtained. Phylogenetic and statistic analysis showed that the archaeal diversity in the collected samples was low. 16S rDNA sequences are within phylums of Crenarchaeota and Euryarchaeota, respectively. The majority of archaeal phylotypes were Marine Crenarchaeotic Group I(MGI), others included Miscellaneous Crenarchaeotic Group (MCG), Marine Benthic Group B (MBGB), et al. This research has provided very important information, which is very helpful to our understanding archaeal community and environment of the Yellow River Delta.