SAMD00069531 1356639 methanogenic prokaryote enrichment culture B19_1 collection_date 2015-08-08 bioproject_id PRJDB5397 project_name Effect of elevated CO2 on methane emission from two contrasting freshwater marshes env_material soil and plant root env_biome soil and plant root lat_lon missing sample_name freshwater marsh sequences env_feature freshwater marsh soil sample_title freshwater marsh methanogenic sequences depth missing elev missing geo_loc_name China: Sanjiang plain