Relationships between fluid mixing, biodiversity, and chemosynthetic primary productivity in Yellowstone hot springs
Relationships between fluid mixing, biodiversity, and chemosynthetic primary productivity in Yellowstone hot springs
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DOI：
10.1111/1462-2920.16340
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发表时间：
2023-01-29
影响因子：
5.1
通讯作者：
Boyd, Eric S. S.
中科院分区：
文献类型：
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作者：
Fernandes-Martins, Maria C. C.;Colman, Daniel R. R.;Boyd, Eric S. S.
对影响热液生态系统生物多样性和生产力的因素还没有很好的了解。在这里，我们调查的流体混合，生物多样性和化能合成初级生产力在三个共同本地化的温泉（RSW，RSN和RSE）在黄石国家公园，有不同的地球化学之间的关系。所有这三个泉源减少热液流体，但RSE和RSN接收输入的气相气体和氧化的地下水，与输入的都是实质上更高的RSN。宏基因组测序显示，在评估的各个维度上，RSN中的群落比RSE和RSW中的群落更具生物多样性。微宇宙活性测定表明，溶解无机碳（DIC）的吸收率也高于RSN比RSE和RSW。总之，这些结果表明，减少火山流体与氧化流体的混合增加，产生额外的生态位空间，能够支持越来越多的生物多样性的社区，更有生产力。这些结果提供了深入了解在热液系统中产生和维持化学合成生物多样性的因素，以及影响化学合成支持的社区中微生物生命的分布，丰度和多样性的因素。这些因素也可能延伸到其他不受光合作用支持的生态系统，包括巨大的地下生物圈和冰盖和冰川下的生物圈。
The factors that influence biodiversity and productivity of hydrothermal ecosystems are not well understood. Here we investigate the relationship between fluid mixing, biodiversity, and chemosynthetic primary productivity in three co-localized hot springs (RSW, RSN, and RSE) in Yellowstone National Park that have different geochemistry. All three springs are sourced by reduced hydrothermal fluid, but RSE and RSN receive input of vapour phase gas and oxidized groundwaters, with input of both being substantially higher in RSN. Metagenomic sequencing revealed that communities in RSN were more biodiverse than those of RSE and RSW in all dimensions evaluated. Microcosm activity assays indicate that rates of dissolved inorganic carbon (DIC) uptake were also higher in RSN than in RSE and RSW. Together, these results suggest that increased mixing of reduced volcanic fluid with oxidized fluids generates additional niche space capable of supporting increasingly biodiverse communities that are more productive. These results provide insight into the factors that generate and maintain chemosynthetic biodiversity in hydrothermal systems and that influence the distribution, abundance, and diversity of microbial life in communities supported by chemosynthesis. These factors may also extend to other ecosystems not supported by photosynthesis, including the vast subterranean biosphere and biospheres beneath ice sheets and glaciers.