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DOI | 10.1038/s41561-017-0031-2 |
Effects of primitive photosynthesis on Earth's early climate system | |
Ozaki, Kazumi1,2,3; Tajika, Eiichi4; Hong, Peng K.5; Nakagawa, Yusuke6; Reinhard, Christopher T.1,2 | |
2018 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:1页码:55-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | The evolution of different forms of photosynthetic life has profoundly altered the activity level of the biosphere, radically reshaping the composition of Earth's oceans and atmosphere over time. However, the mechanistic impacts of a primitive photosynthetic biosphere on Earth's early atmospheric chemistry and climate are poorly understood. Here, we use a global redox balance model to explore the biogeochemical and climatological effects of different forms of primitive photosynthesis. We find that a hybrid ecosystem of H-2-based and Fe2+-based anoxygenic photoautotrophs-organisms that perform photosynthesis without producing oxygen-gives rise to a strong nonlinear amplification of Earth's methane (CH4) cycle, and would thus have represented a critical component of Earth's early climate system before the advent of oxygenic photosynthesis. Using a Monte Carlo approach, we find that a hybrid photosynthetic biosphere widens the range of geochemical conditions that allow for warm climate states well beyond either of these metabolic processes acting in isolation. Our results imply that the Earth's early climate was governed by a novel and poorly explored set of regulatory feedbacks linking the anoxic biosphere and the coupled H, C and Fe cycles. We suggest that similar processes should be considered when assessing the potential for sustained habitability on Earth-like planets with reducing atmospheres. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423842000019 |
WOS关键词 | ATMOSPHERIC CO2 ; ORGANIC-CARBON ; GREENHOUSE ; METHANE ; EVOLUTION ; TEMPERATURE ; LUMINOSITY ; BIOSPHERE ; OXIDATION ; HISTORY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34842 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 2.NASA, Astrobiol Inst, Alternat Earths Team, Mountain View, CA 94043 USA; 3.NASA, Postdoctoral Program, Univ Space Res Assoc, Columbia, MD 21046 USA; 4.Univ Tokyo, Dept Earth & Planetary Sci, Grad Sch Sci, Bunkyo Ku, Tokyo, Japan; 5.Univ Tokyo, Dept Syst Innovat, Sch Engn, Bunkyo Ku, Tokyo, Japan; 6.Hitachi Power Solut Co Ltd, Anal Engn Dept, Hitachi, Ibaraki, Japan |
推荐引用方式 GB/T 7714 | Ozaki, Kazumi,Tajika, Eiichi,Hong, Peng K.,et al. Effects of primitive photosynthesis on Earth's early climate system[J]. NATURE GEOSCIENCE,2018,11(1):55-+. |
APA | Ozaki, Kazumi,Tajika, Eiichi,Hong, Peng K.,Nakagawa, Yusuke,&Reinhard, Christopher T..(2018).Effects of primitive photosynthesis on Earth's early climate system.NATURE GEOSCIENCE,11(1),55-+. |
MLA | Ozaki, Kazumi,et al."Effects of primitive photosynthesis on Earth's early climate system".NATURE GEOSCIENCE 11.1(2018):55-+. |
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