PDF(Pubmed)
Abstract：
Glaciers constitute a polyextremophilic environment characterized by low temperatures, high solar radiation, a lack of nutrients, and low water availability. However, glaciers located in volcanic regions have special characteristics, since the volcanic foci provide them with heat and nutrients that allow the growth of microbial communities highly adapted to this environment. Most of the studies on these glacial ecosystems have been carried out in volcanic environments in the northern hemisphere, including Iceland and the Pacific Northwest. To better know, the microbial diversity of the underexplored glacial ecosystems and to check what their specific characteristics were, we studied the structure of bacterial communities living in volcanic glaciers in Deception Island, Antarctica, and in the Kamchatka peninsula. In addition to geographic coordinates, many other glacier environmental factors (like volcanic activity, altitude, temperature, pH, or ice chemical composition) that can influence the diversity and distribution of microbial communities were considered in this study. Finally, using their taxonomic assignments, an attempt was made to compare how different or similar are the biogeochemical cycles in which these microbiomes are involved.
摘要：
冰川构成了一个以低温为特征的多极端环境，高太阳辐射,缺乏营养，和低的水供应。然而,位于火山地区的冰川具有特殊的特征，因为火山为它们提供了热量和营养，使微生物群落高度适应这种环境的生长。对这些冰川生态系统的研究大多是在北半球的火山环境中进行的,包括冰岛和太平洋西北部。为了更好地知道，未充分开发的冰川生态系统的微生物多样性，并检查它们的具体特征是什么，我们研究了生活在欺骗岛火山冰川中的细菌群落的结构，南极洲,在堪察加半岛。除了地理坐标,许多其他冰川环境因素(如火山活动，高度,温度,pH值,或冰的化学成分），可以影响微生物群落的多样性和分布。最后,使用他们的分类分配，尝试比较这些微生物所涉及的生物地球化学循环的不同或相似程度。
