Tab. 3: Substrate pH values of crypthoendolithic microbial communities

Cryploendolithic microbial communities in the Ross Desert (McMurdo Dry Valleys) are characterized on the basis of photosymlictic microorganisms and fungi. Two eukaryotic communities (the lichen-dominated and Hemichloris communities) and three cyanobacterial communities (the red Gloeocapsa, Hormathonema-Gloeocapsa and Chroococcidiopsis communities) are described. Eleven coccoid. ohne pleurocapsoid, and five filamentous cyanobacteria occurring in these communities are characterized and illustrated. The moisture grade of the rock substrate seems to affect pH. Formation of primary iron stain, and the distribution of microbial communities.本研究以光合共生微生物与真菌为依据，对罗斯沙漠（麦克默多干谷）内的隐石内微生物群落（cryptendolithic microbial community）开展了系统的特征解析。本次研究共描述了两类真核微生物群落——地衣主导型群落与半叶绿素属（Hemichloris）群落，以及三类蓝细菌（cyanobacteria）群落：红色粘球藻属（Gloeocapsa）群落、蠕丝藻属-粘球藻属（Hormathonema-Gloeocapsa）群落与拟色球藻属（Chroococcidiopsis）群落。此外，本研究对上述群落中存在的11株球菌状（coccoid）、1株宽球藻型（pleurocapsoid）以及5株丝状（filamentous）蓝细菌进行了详细的特征描述与图示展示。研究结果表明，岩石基质的湿度等级似乎会对基质pH值、原生铁染层的形成以及微生物群落的分布产生影响。