Faucher, G and Hoffmann, L and Bach, LT and Bottini, C and Erba, E and Riebesell, U, Impact of trace metal concentrations on coccolithophore growth and morphology: laboratory simulations of Cretaceous stress, Biogeosciences, 14 pp. 3603-3613. ISSN 1726-4170 (2017) [Refereed Article]
Copyright 2017 the authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/
Our laboratory experiments demonstrated that elevated trace metal concentrations, similarly to the fossil record, affect coccolithophore algae size and/or weight. Smaller coccoliths were detected in E. huxleyi and C. pelagicus, while coccoliths of G. oceanica showed a decrease in size only at the highest trace metal concentrations. P. carterae coccolith size was unresponsive to changing trace metal concentrations. These differences among species allow discriminating the most- (P. carterae), intermediate- (E. huxleyi and G. oceanica) and least-tolerant (C. pelagicus) taxa. The fossil record and the experimental results converge on a selective response of coccolithophores to metal availability.
These species-specific differences must be considered before morphological features of coccoliths are used to reconstruct paleo-chemical conditions.
|Item Type:||Refereed Article|
|Keywords:||coccolithophore, phytoplankton, paleo|
|Research Division:||Earth Sciences|
|Research Field:||Biological oceanography|
|Objective Division:||Expanding Knowledge|
|Objective Group:||Expanding knowledge|
|Objective Field:||Expanding knowledge in the earth sciences|
|UTAS Author:||Bach, LT (Dr Lennart Bach)|
|Web of Science® Times Cited:||17|
|Deposited By:||Ecology and Biodiversity|
|Downloads:||13 View Download Statistics|
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