Language:

The rise of algae in Cryogenian oceans and the emergence of animals

Nature (London), 2017-08, Vol.548 (7669), p.578-581 [Peer Reviewed Journal]

COPYRIGHT 2017 Nature Publishing Group ;COPYRIGHT 2017 Nature Publishing Group ;Copyright Nature Publishing Group Aug 31, 2017 ;ISSN: 0028-0836 ;EISSN: 1476-4687 ;DOI: 10.1038/nature23457 ;PMID: 28813409

Full text available

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
The rise of algae in Cryogenian oceans and the emergence of animals
Author: Brocks, Jochen J ; Jarrett, Amber J M ; Sirantoine, Eva ; Hallmann, Christian ; Hoshino, Yosuke ; Liyanage, Tharika
Subjects: Abundance ; Algae ; Animals ; Atmospheric oxygen ; Bacteria ; Bioindicators ; Biomarkers ; Biomarkers - analysis ; Carbon ; Carbon Cycle ; Cyanobacteria ; Cyanobacteria - isolation & purification ; Cyanobacteria - metabolism ; Deglaciation ; Ecosystems ; Energy distribution ; Energy flow ; Eukaryota - isolation & purification ; Eukaryota - metabolism ; Evolution ; Food Chain ; Food chains ; Food webs ; Fossils ; Geology ; History, Ancient ; Hydrocarbons ; Ice Cover ; Natural history ; Nutrients ; Oceans ; Oceans and Seas ; Oxygen ; Phosphorus - metabolism ; Sediments ; Steroid hormones ; Taxonomy ; Trophic levels ; Water column
Is Part Of: Nature (London), 2017-08, Vol.548 (7669), p.578-581
Description: The transition from dominant bacterial to eukaryotic marine primary productivity was one of the most profound ecological revolutions in the Earth's history, reorganizing the distribution of carbon and nutrients in the water column and increasing energy flow to higher trophic levels. But the causes and geological timing of this transition, as well as possible links with rising atmospheric oxygen levels and the evolution of animals, remain obscure. Here we present a molecular fossil record of eukaryotic steroids demonstrating that bacteria were the only notable primary producers in the oceans before the Cryogenian period (720-635 million years ago). Increasing steroid diversity and abundance marks the rapid rise of marine planktonic algae (Archaeplastida) in the narrow time interval between the Sturtian and Marinoan 'snowball Earth' glaciations, 659-645 million years ago. We propose that the incumbency of cyanobacteria was broken by a surge of nutrients supplied by the Sturtian deglaciation. The 'Rise of Algae' created food webs with more efficient nutrient and energy transfers, driving ecosystems towards larger and increasingly complex organisms. This effect is recorded by the concomitant appearance of biomarkers for sponges and predatory rhizarians, and the subsequent radiation of eumetazoans in the Ediacaran period.
Publisher: England: Nature Publishing Group
Language: English
Identifier: ISSN: 0028-0836
EISSN: 1476-4687
DOI: 10.1038/nature23457
PMID: 28813409
Source: ProQuest One Psychology
MEDLINE
ProQuest Central

Back to results list


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

The rise of algae in Cryogenian oceans and the emergence of animals

COPYRIGHT 2017 Nature Publishing Group ;COPYRIGHT 2017 Nature Publishing Group ;Copyright Nature Publishing Group Aug 31, 2017 ;ISSN: 0028-0836 ;EISSN: 1476-4687 ;DOI: 10.1038/nature23457 ;PMID: 28813409

Searching Remote Databases, Please Wait