Seawater carbonate chemistry and macromolecular data of diatoms

Primary production in the Southern Ocean is dominated by diatom-rich phytoplankton assemblages, whose individual physiological characteristics and community composition are strongly shaped by the environment, yet knowledge on how diatoms allocate cellular energy in response to ocean acidification (OA) is limited. Understanding such changes in allocation is integral to determining the nutritional quality of diatoms and the subsequent impacts on the trophic transfer of energy and nutrients. Using synchrotron-based Fourier transform infrared microspectroscopy, we analysed the macromolecular content of selected individual diatom taxa from a natural Antarctic phytoplankton community exposed to a gradient of fCO2 levels (288–1263 µatm). Strong species-specific differences in macromolecular partitioning were observed under OA. Large taxa showed preferential energy allocation towards proteins, while smaller taxa increased both lipid and protein stores at high fCO2. If these changes are representative of future Antarctic diatom physiology, we may expect a shift away from lipid-rich large diatoms towards a community dominated by smaller taxa, but with higher lipid and protein stores than their present-day contemporaries, a response that could have cascading effects on food web dynamics in the Antarctic marine ecosystem.

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Cite this as

Duncan, Rebecca J, Nielsen, Daniel A, Sheehan, Cristin E, Deppeler, Stacy, Hancock, Alyce M, Schulz, Kai, Davidson, Andrew T, Petrou, Katherina (2022). Dataset: Seawater carbonate chemistry and macromolecular data of diatoms. https://doi.org/10.1594/PANGAEA.944403

DOI retrieved: 2022

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.944403
Author Duncan, Rebecca J
Given Name Rebecca J
Family Name Duncan
More Authors
Nielsen, Daniel A
Sheehan, Cristin E
Deppeler, Stacy
Hancock, Alyce M
Schulz, Kai
Davidson, Andrew T
Petrou, Katherina
Source Creation 2022
Publication Year 2022
Resource Type text/tab-separated-values - filename: Duncan-etal_2022_NP
Subject Areas
Name: BiologicalClassification

Name: Chemistry

Related Identifiers
Title: Ocean acidification alters the nutritional value of Antarctic diatoms
Identifier: https://doi.org/10.1111/nph.17868
Type: DOI
Relation: References
Year: 2022
Source: New Phytologist
Authors: Duncan Rebecca J , Nielsen Daniel A , Sheehan Cristin E , Deppeler Stacy , Hancock Alyce M , Schulz Kai , Davidson Andrew T , Petrou Katherina , Petrou Katherina , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James .

Title: Macromolecular data of diatoms exposed to Ocean Acidification - Mesocosm Experiments at Davis Station, Antarctica
Identifier: https://doi.org/10.26179/ej5x-2h37
Type: DOI
Relation: References
Year: 2021
Source: Australian Antarctic Data Centre
Authors: Duncan Rebecca J , Nielsen Daniel A , Sheehan Cristin E , Deppeler Stacy , Hancock Alyce M , Schulz Kai , Davidson Andrew T , Petrou Katherina , Petrou Katherina , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James .

Title: seacarb: seawater carbonate chemistry with R. R package version 3.2.16
Identifier: https://cran.r-project.org/web/packages/seacarb/index.html
Type: DOI
Relation: References
Year: 2021
Authors: Duncan Rebecca J , Nielsen Daniel A , Sheehan Cristin E , Deppeler Stacy , Hancock Alyce M , Schulz Kai , Davidson Andrew T , Petrou Katherina , Petrou Katherina , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James .