DOI: 10.1038/s41561-021-00784-3
论文题名: Possible link between Earth’s rotation rate and oxygenation
作者: Klatt J.M. ; Chennu A. ; Arbic B.K. ; Biddanda B.A. ; Dick G.J.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2021
卷: 14, 期: 8 起始页码: 564
结束页码: 570
语种: 英语
英文关键词: Cyanobacteria
英文摘要: The biotic and abiotic controls on major shifts in atmospheric oxygen and the persistence of low-oxygen periods over a majority of Earth’s history remain under debate. Explanations of Earth’s stepwise pattern of oxygenation have mostly neglected the effect of changing diel illumination dynamics linked to daylength, which has increased through geological time due to Earth’s rotational deceleration caused by tidal friction. Here we used microsensor measurements and dynamic modelling of interfacial solute fluxes in cyanobacterial mats to investigate the effect of changing daylength on Precambrian benthic ecosystems. Simulated increases in daylength across Earth’s historical range boosted the diel benthic oxygen export, even when the gross photosynthetic production remained constant. This fundamental relationship between net productivity and daylength emerges from the interaction of diffusive mass transfer and diel illumination dynamics, and is amplified by metabolic regulation and microbial behaviour. We found that the resultant daylength-driven surplus organic carbon burial could have shaped the increase in atmospheric oxygen that occurred during the Great and Neoproterozoic Oxidation Events. Our suggested mechanism, which links the coinciding increases in daylength and atmospheric oxygen via enhanced net productivity, reveals a possible contribution of planetary mechanics to the evolution of Earth’s biology and geochemistry. © 2021, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169772
Appears in Collections: 气候变化与战略
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作者单位: Microsensor Group, Max Planck Institute for Marine Microbiology, Bremen, Germany; Department of Earth & Environmental Sciences, University of Michigan, Ann Arbor, MI, United States; Data Science and Technology, Leibniz Centre for Tropical Marine Research, Bremen, Germany; Annis Water Resources Institute, Grand Valley State University, Muskegon, MI, United States
Recommended Citation:
Klatt J.M.,Chennu A.,Arbic B.K.,et al. Possible link between Earth’s rotation rate and oxygenation[J]. Nature Geoscience,2021-01-01,14(8)