NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Evolution of primary producers and productivity across the EdiacaranCambrian transition
Lei Xiang (向雷)1,2,3; Shane D. Schoepfer4; Hua Zhang (张华)1,2,3; Chang-qun Cao (曹长群)1,2,3; Shu-zhong Shen (沈树忠)1,2,3
2018-08
Source PublicationPrecambrian Research
ISSN0301-9268
Volume313Pages:68-77
Abstract

Nearly all extant animal phyla first appeared during the Ediacaran-Cambrian transition. A revolution in primary producer ecology and marine productivity has been proposed as a bottom-up ecological driver for this rapid diversification of metazoans. However, the control(s) driving the evolution of primary producers and primary productivity around the Ediacaran-Cambrian transition, and their potential relationship to the Cambrian Explosion, are not fully understood. In this study, we measured the nitrogen content and the nitrogen isotopic composition of kerogen in the Piyuancun and Hetang Formations, using samples collected from the Chunye-1 well, on the Lower Yangtze Block in western Zhejiang. Our isotope results suggest that nitrate was the dominant N source fueling primary productivity during deposition of the entire Piyuancun Formation and lower Hetang Formation, with only a minor contribution from N-2 fixation. Quantitative reconstructions of paleoproductivity based on organic carbon and pyrite content and sedimentation rate indicate that productivity either stayed the same or increased during the transition from the Piyuancun Formation to the overlying Hetang Formation. Thus, fixed N availability was not the ultimate factor limiting primary productivity during the Ediacaran-Cambrian transition. Combining our data with published nitrogen isotope records from the Early-Middle Ediacaran to Cambrian Stage 4 suggests that NO3- was the dominant N species fueling phytoplanktonic productivity during the broad Cambrian Explosion interval, from its earliest roots in the Ediacaran through the main episode in Cambrian Stage 3. Eukaryotes lack the ability to fix nitrogen, and preferentially assimilate nitrate. The NO3--dominated euphotic zone from the Early-Middle Ediacaran to Cambrian Stage 3 may have promoted the radiation of relatively large eukaryote phytoplankton, which may have been an important driver of early animal diversification.

KeywordKerogen Nitrogen Isotopes Nutrient Limitation Eukaryote Cambrian Explosion
DOI10.1016/j.precamres.2018.05.023
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000436883700005
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/14003
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLei Xiang (向雷)
Affiliation1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;
3.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China;
4.Western Carolina Univ, Dept Geosci & Nat Resources, 1 Univ Way, Cullowhee, NC 28779 USA
Recommended Citation
GB/T 7714
Lei Xiang ,Shane D. Schoepfer,Hua Zhang ,et al. Evolution of primary producers and productivity across the EdiacaranCambrian transition[J]. Precambrian Research,2018,313:68-77.
APA Lei Xiang ,Shane D. Schoepfer,Hua Zhang ,Chang-qun Cao ,&Shu-zhong Shen .(2018).Evolution of primary producers and productivity across the EdiacaranCambrian transition.Precambrian Research,313,68-77.
MLA Lei Xiang ,et al."Evolution of primary producers and productivity across the EdiacaranCambrian transition".Precambrian Research 313(2018):68-77.
Files in This Item:
File Name/Size DocType Version Access License
evolution of primary(965KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lei Xiang (向雷)]'s Articles
[Shane D. Schoepfer]'s Articles
[Hua Zhang (张华)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lei Xiang (向雷)]'s Articles
[Shane D. Schoepfer]'s Articles
[Hua Zhang (张华)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lei Xiang (向雷)]'s Articles
[Shane D. Schoepfer]'s Articles
[Hua Zhang (张华)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.