Primary Microbial Succession in the Anchialine Ecosystem
Primary Microbial Succession in the Anchialine Ecosystem
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Anchialine 生态系统中的初级微生物演替
DOI：
10.1093/icb/icac087
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发表时间：
2022
影响因子：
2.6
通讯作者：
Havird, Justin C.
中科院分区：
文献类型：
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作者：
Sterling, James J.;Sakihara, Troy S.;Brannock, Pamela M.;Pearson, Zoe G.;Maclaine, Kendra D.;Santos, Scott R.;Havird, Justin C.
当新土地形成时，最初的微生物定殖为植物和动物群落的进一步生态演替奠定了基础。火山活动期间形成的新水生栖息地的初级微生物演替很少受到关注。近岸生态系统包括年轻熔岩流中的沿海池塘，为研究这一过程提供了机会。在这里，我们对 2018 年火山喷发期间形成的夏威夷安奇阿林栖息地的微生物群落进行了表征。三个栖息地的底栖样本是在其形成后约 2 年以及随后跨越约 1 年的时间点收集的。原核和真核生物群落的序列分析（16S 和 18S）用于测试群落是否与较早的、已建立的近邻栖息地的群落相似，以及群落结构是否随时间而变化。结果表明，来自新栖息地的微生物群落与已建立的 anchialine 微生物群落不同，具有较高比例的 Planctomycetota 和 Chloroflexi，但绿藻比例较低。每个新栖息地还拥有相对于其他栖息地独特的群落。虽然每个栖息地的群落组成随着时间的推移经历了统计上显着的变化，但它们仍然与已建立的安奇阿林栖息地不同。与其他栖息地相比，新栖息地的温度也很高。这些结果表明，特殊的微生物群落是在夏威夷安奇阿林栖息地的早期演替过程中形成的。未来的监测将揭示在温度下降和宏观生物变得更加丰富后，这里描述的早期群落是否保持稳定，或者微生物群落是否会继续变化并最终类似于已建立的栖息地。这项工作是研究水生栖息地原生火山演替的关键第一步，并表明年轻的近岸栖息地可能需要特殊保护地位。
When new land is created, initial microbial colonization lays the foundation for further ecological succession of plant and animal communities. Primary microbial succession of new aquatic habitats formed during volcanic activity has received little attention. The anchialine ecosystem, which includes coastal ponds in young lava flows, offers an opportunity to examine this process. Here, we characterized microbial communities of anchialine habitats in Hawaii that were created during volcanic eruptions in 2018. Benthic samples from three habitats were collected ∼2 years after their formation and at later time points spanning ∼1 year. Sequence profiling (16S and 18S) of prokaryotic and eukaryotic communities was used to test whether communities were similar to those from older, established anchialine habitats, and if community structure changed over time. Results show that microbial communities from the new habitats were unlike any from established anchialine microbial communities, having higher proportions of Planctomycetota and Chloroflexi but lower proportions of green algae. Each new habitat also harbored its own unique community relative to other habitats. While community composition in each habitat underwent statistically significant changes over time, they remained distinctive from established anchialine habitats. New habitats also had highly elevated temperatures compared to other habitats. These results suggest that idiosyncratic microbial consortia form during early succession of Hawaiian anchialine habitats. Future monitoring will reveal whether the early communities described here remain stable after temperatures decline and macro-organisms become more abundant, or if microbial communities will continue to change and eventually resemble those of established habitats. This work is a key first step in examining primary volcanic succession in aquatic habitats and suggests young anchialine habitats may warrant special conservation status.