Relationship between coccolith length and thickness in the coccolithophore species Emiliania huxleyi and Gephyrocapsa oceanica

  • Coccolith mass is an important parameter for estimating coccolithophore contribution to carbonate sedimentation, organic carbon ballasting and coccolithophore calcification. Single coccolith mass is often estimated based on the ks model, which assumes that length and thickness increase proportionally. To evaluate this assumption, this study compared coccolith length, thickness, and mass of seven Emiliania huxleyi strains and one Gephyrocapsa oceanica strain grown in 25, 34, and 44 salinity artificial seawater. While coccolith length increased with salinity in four E. huxleyi strains, thickness did not increase significantly with salinity in three of these strains. Only G. oceanica showed a consistent increase in length with salinity that was accompanied by an increase in thickness. Coccolith length and thickness was also not correlated in 14 of 24 individual experiments, and in the experiments in which there was a positive relationship r2 was low (<0.4). Because thickness did not increase with length in E. huxleyi, the increase in mass was less than expected from the ks model, and thus, mass can not be accurately estimated from coccolith length alone.

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Author:Simen Alexander Linge Johnsen, Jörg Bollmann, Christina Gebühr, Jens Olaf Herrle
URN:urn:nbn:de:hebis:30:3-506619
DOI:https://doi.org/10.1371/journal.pone.0220725
ISSN:1932-6203
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/31381588
Parent Title (English):PLoS one
Publisher:PLoS
Place of publication:Lawrence, Kan.
Contributor(s):David Peter Keller
Document Type:Article
Language:English
Year of Completion:2019
Date of first Publication:2019/08/05
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/08/12
Tag:Calcification; Carbon dioxide; Linear regression analysis; Oceans; Salinity; Scanning electron microscopy; Skewness; Statistical distributions
Volume:14
Issue:(8): e0220725
Page Number:23
First Page:1
Last Page:23
Note:
Copyright: © 2019 Linge Johnsen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
HeBIS-PPN:453740618
Institutes:Geowissenschaften / Geographie / Geowissenschaften
Fachübergreifende Einrichtungen / Biodiversität und Klima Forschungszentrum (BiK-F)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0