Dulov L E, Lein A Iu, Dubinina G A, Pimenov N V
Mikrobiologiia. 2005 Jan-Feb;74(1):111-8.
Microbiological and biogeochemical measurements showed that the intensities of CO2 assimilation, methane oxidation, and sulfate reduction in the Lost City vent field (30 degrees N) reach 3.8 microg C/(1 day), 0.06 microg C/(1 day), and 117 microg S/(1 day), respectively. On the surface of the carbonate structures occurring in this field, two varieties of bacterial mats were found. The first variety, which is specific to the Lost City alkaline vent field, represents jelly bacterial mats dominated by slime-producing bacteria of several morphotypes. This mat variety also contains chemolithotrophic and heterotrophic microorganisms, either microaerobic or anaerobic. The intensities of CO2 assimilation, methane oxidation, and sulfate reduction in this variety reach 747 microg C/(dm3 day), 0.02 microg C/(dm3 day), and 28,000 microg S/(dm3 day), respectively. Bacterial mats of the second variety are formed by nonpigmented filamentous sulfur bacteria, which are close morphologically to Thiothrix. The intensities of CO2 assimilation, methane oxidation, and sulfate reduction in the second mat variety reach 8.2 microg C/(dm3 day), 5.8 microg C/(dm3 day), and 17,000 microg S/(dm3 day), respectively. These data suggest the existence of subsurface microflora in the Lost City vent field.
微生物学和生物地球化学测量结果表明，失落之城喷口区（北纬30度）的二氧化碳同化、甲烷氧化和硫酸盐还原强度分别达到3.8微克碳/（1天）、0.06微克碳/（1天）和117微克硫/（1天）。在该区域出现的碳酸盐结构表面，发现了两种类型的细菌垫。第一种类型是失落之城碱性喷口区特有的，是由几种形态类型的产黏液细菌主导的凝胶状细菌垫。这种细菌垫类型还包含化能自养和异养微生物，有微需氧的也有厌氧的。该类型中二氧化碳同化、甲烷氧化和硫酸盐还原强度分别达到747微克碳/（立方分米·天）、0.02微克碳/（立方分米·天）和28000微克硫/（立方分米·天）。第二种类型的细菌垫由无色丝状硫细菌形成，其形态与辫硫菌相近。第二种细菌垫类型中二氧化碳同化、甲烷氧化和硫酸盐还原强度分别达到8.2微克碳/（立方分米·天）、5.8微克碳/（立方分米·天）和17000微克硫/（立方分米·天）。这些数据表明失落之城喷口区存在地下微生物群落。
