Living Dendrolitic Microbial Mats in Hamelin Pool, Shark Bay, Western Australia
Living Dendrolitic Microbial Mats in Hamelin Pool, Shark Bay, Western Australia
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DOI：
10.3390/geosciences8060212
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发表时间：
2018-06
期刊：
影响因子：
2.7
通讯作者：
E. Suosaari;S. Awramik;R. Reid;J. Stolz;K. Grey
中科院分区：
文献类型：
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作者：
E. Suosaari;S. Awramik;R. Reid;J. Stolz;K. Grey
位于西澳大利亚州的哈梅林池（Hamelin Pool）是现存海洋叠层石中最大、最多样化的集合体，其形状和大小可与古代建筑相媲美。最近的一项实地密集计划揭示了在潮间带，低能量环境中形成的现代树状微生物垫的季节性短暂发生。由丝状蓝藻占主导地位，树枝状微生物垫形成时，细丝提供了一个支持框架，作为一个滑动的结果，建立一个灌木状的形态。在整个岩石记录中已知的树晶岩是指宏观的微生物岩，其中间结构由称为灌木的非层压乔木结构组成。在这些现代的例子中，粗丝的鞘丝藻形成了灌木的“树干”，细丝的鞘丝藻、席藻和裂丝藻形成了“树枝”。这些受生物学影响的树状结构提供了对微生物群落和环境复杂相互作用的深入了解，拓宽了我们对灌木和树状结构的理解。
Hamelin Pool, Shark Bay, Western Australia, is home to the largest and most diverse assemblage of living marine stromatolites, with shapes and sizes comparable to ancient structures. A recent field-intensive program revealed seasonally ephemeral occurrences of modern dendrolitic microbial mats forming in intertidal, low energy settings. Dominated by filamentous cyanobacteria, dendrolitic microbial mats are formed when filaments provide a supporting framework as a result of gliding mobility, to build a shrubby morphology. Dendrolites, known throughout the rock record, refer to macroscopic microbialites with mesostuctures composed of unlaminated arborescent structures called shrubs. In these modern examples, thick filaments of Lyngbya aestuarii form the “trunk” of the bush, with finer filaments of Lyngbya fragilis, Phormidium sp. and Schizothrix sp. forming the “branches” These biologically-influenced dendrolitic structures provide insight into the complex interplay of microbial communities and the environment, broadening our understanding of shrub and dendrolite formation throughout the rock record.