Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0141-5 |
Improved efficiency of the biological pump as a trigger for the Late Ordovician glaciation | |
Shen, Jiaheng1,2; Pearson, Ann1; Henkes, Gregory A.1,3; Zhang, Yi Ge1,4; Chen, Kefan5; Li, Dandan5; Wankel, Scott D.6; Finney, Stanley C.7; Shen, Yanan5 | |
2018-07-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:7页码:510-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The first of the 'Big Five' Phanerozoic mass extinctions occurred in tandem with an episode of glaciation during the Hirnantian Age of the Late Ordovician. The mechanism or change in the carbon cycle that promoted this glaciation, thereby resulting in the extinction, is still debated. Here we report new, coupled nitrogen isotope analyses of bulk sediments and chlorophyll degradation products (porphyrins) from the Vinini Creek section (Vinini Formation, Nevada, USA) to show that eukaryotes increasingly dominated marine export production in the lead-up to the Hirnantian extinction. We then use these findings to evaluate changes in the carbon cycle by incorporating them into a biogeochemical model in which production is increased in response to an elevated phosphorus inventory, potentially caused by enhanced continental weathering in response to the activity of land plants and/or an episode of volcanism. The results suggest that expanded eukaryotic algal production may have increased the community average cell size, leading to higher export efficiency during the Late Katian. The coincidence of this community shift with a large-scale marine transgression increased organic carbon burial, drawing down CO2 and triggering the Hirnantian glaciation. This episode may mark an early Palaeozoic strengthening of the biological pump, which, for a short while, may have made eukaryotic algae indirect killers. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438794800014 |
WOS关键词 | NITROGEN ISOTOPIC COMPOSITION ; MASS EXTINCTION ; ENVIRONMENTAL-CHANGES ; ORGANIC-CARBON ; BLACK SHALES ; SEAWATER ; EXPORT ; SIZE ; FRACTIONATION ; TEMPERATURE |
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/34860 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China; 3.SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA; 4.Texas A&M Univ, Dept Oceanog, College Stn, TX 77843 USA; 5.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China; 6.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA; 7.Calif State Univ Long Beach, Dept Geol Sci, Long Beach, CA 90840 USA |
推荐引用方式 GB/T 7714 | Shen, Jiaheng,Pearson, Ann,Henkes, Gregory A.,et al. Improved efficiency of the biological pump as a trigger for the Late Ordovician glaciation[J]. NATURE GEOSCIENCE,2018,11(7):510-+. |
APA | Shen, Jiaheng.,Pearson, Ann.,Henkes, Gregory A..,Zhang, Yi Ge.,Chen, Kefan.,...&Shen, Yanan.(2018).Improved efficiency of the biological pump as a trigger for the Late Ordovician glaciation.NATURE GEOSCIENCE,11(7),510-+. |
MLA | Shen, Jiaheng,et al."Improved efficiency of the biological pump as a trigger for the Late Ordovician glaciation".NATURE GEOSCIENCE 11.7(2018):510-+. |
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