Microbes and paleoenvironments.

摘要

Among the world’s biotas, microbes are generally recognized to play the most signi?cant role in Earth-surface environmental change and are sensitive to changing conditions, with some being opportunists capable of tolerating and exploiting extreme changes in environments. Thus, the interaction between biosphere and geosphere has been widely recorded by the microbial world, but the ancient microbial world is extremely dif?cult to explore because of the effects of two critical issues. The ?rst arises from poor preservation of ancient microbial ?ngerprints owing to the lack of skeletons in most cases.