Microbial metagenomics in different depths of the terrestrial mud volcanoes, southwestern Taiwan. <p> The purpose of this project is to investigate change in microbial community with depths in a terrestrial mud volcano. We would like to clarify which microbial group is responsible for biosynthetic methanogen production and how methane is removed by anaerobic and aerobic methanotrophic bacteria at different depths. The metagenomic information can provide us variations of potential metabolic capacity of microbial communities from samples.