Early animal evolution and highly oxygenated seafloor niches hosted by microbial mats | |
Ding, Weiming2,3; Dong, Lin2,3; Sun, Yuanlin2,3; Ma, Haoran2,3; Xu, Yihe2,3; Yang, Runyu2,3; Peng, Yongbo4; Zhou, Chuanming (周传明)1; Shen, Bing2,3 | |
刊名 | SCIENTIFIC REPORTS |
2019-09-20 | |
卷号 | 9页码:11 |
ISSN号 | 2045-2322 |
DOI | 10.1038/s41598-019-49993-2 |
英文摘要 | The earliest unambiguous evidence for animals is represented by various trace fossils in the latest Ediacaran Period (550-541Ma), suggesting that the earliest animals lived on or even penetrated into the seafloor.Yet, the O-2 fugacity at the sediment-water interface (SWI) for the earliest animal proliferation is poorly defined. The preferential colonization of seafloor as a first step in animal evolution is also unusual. In order to understand the environmental background, we employed a new proxy, carbonate associated ferrous iron (Fe-carb), to quantify the seafloor oxygenation. Fe-carb of the latest Ediacaran Shibantan limestone in South China, which yields abundant animal traces, ranges from 2.27 to 85.43 ppm, corresponding to the seafloor O-2 fugacity of 162 mu mol/L to 297 mu mol/L. These values are significantly higher than the oxygen saturation in seawater at the contemporary atmospheric pO(2) levels. The highly oxygenated seafloor might be attributed to O-2 production of the microbial mats. Despite the moderate atmospheric pO(2) level, microbial mats possibly provided highly oxygenated niches for the evolution of benthic metazoans. Our model suggests that the O-2 barrier could be locally overcome in the mat ground, questioning the long-held belief that atmospheric oxygenation was the key control of animal evolution. |
资助项目 | Natural Science Foundation of China[41672334] ; Natural Science Foundation of China[41402025] |
WOS关键词 | DEEP-OCEAN OXYGENATION ; DENGYING FORMATION ; REDOX CONDITIONS ; TRACE FOSSIL ; IRON ; CALCITE ; CARBONATES ; RADIATION ; ECOLOGY ; RECORD |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
出版者 | NATURE PUBLISHING GROUP |
WOS记录号 | WOS:000487002100023 |
资助机构 | Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/27863] |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Dong, Lin |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China 2.MOE, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, 5 Yiheyuan Rd, Beijing 100871, Peoples R China 4.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA |
推荐引用方式 GB/T 7714 | Ding, Weiming,Dong, Lin,Sun, Yuanlin,et al. Early animal evolution and highly oxygenated seafloor niches hosted by microbial mats[J]. SCIENTIFIC REPORTS,2019,9:11. |
APA | Ding, Weiming.,Dong, Lin.,Sun, Yuanlin.,Ma, Haoran.,Xu, Yihe.,...&Shen, Bing.(2019).Early animal evolution and highly oxygenated seafloor niches hosted by microbial mats.SCIENTIFIC REPORTS,9,11. |
MLA | Ding, Weiming,et al."Early animal evolution and highly oxygenated seafloor niches hosted by microbial mats".SCIENTIFIC REPORTS 9(2019):11. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论