Long-term acclimation to elevated pCO2 alters carbon metabolism and reduces growth in the Antarctic diatom Nitzschia lecointei

Increasing atmospheric CO2 levels are driving changes in the seawater carbonate system, resulting in higher pCO2 and reduced pH (ocean acidification). Many studies on marine organisms have focused on short-term physiological responses to increased pCO2, and few on slow-growing polar organisms with a relative low adaptation potential. In order to recognize the consequences of climate change in biological systems, acclimation and adaptation to new environments are crucial to address. In this study, physiological responses to long-term acclimation (194 days, approx. 60 asexual generations) of three pCO2 levels (280, 390 and 960 µatm) were investigated in the psychrophilic sea ice diatom Nitzschia lecointei. After 147 days, a small reduction in growth was detected at 960 µatm pCO2. Previous short-term experiments have failed to detect altered growth in N. lecointei at high pCO2, which illustrates the importance of experimental duration in studies of climate change. In addition, carbon metabolism was significantly affected by the long-term treatments, resulting in higher cellular release of dissolved organic carbon (DOC). In turn, the release of labile organic carbon stimulated bacterial productivity in this system. We conclude that long-term acclimation to ocean acidification is important for N. lecointei and that carbon overconsumption and DOC exudation may increase in a high-CO2 world.

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Torstensson, Anders, Hedblom, Mikael, Mattsdotter Björk, M y, Chierici, Melissa, Wulff, Angela (2015). Dataset: Long-term acclimation to elevated pCO2 alters carbon metabolism and reduces growth in the Antarctic diatom Nitzschia lecointei. https://doi.org/10.1594/PANGAEA.869122

DOI retrieved: 2015

Additional Info

Field Value
Imported on November 29, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.869122
Author Torstensson, Anders
Given Name Anders
Family Name Torstensson
More Authors
Hedblom, Mikael
Mattsdotter Björk, M y
Chierici, Melissa
Wulff, Angela
Source Creation 2015
Publication Year 2015
Resource Type text/tab-separated-values - filename: Torstensson_2016
Subject Areas
Name: BiologicalClassification

Name: Biosphere

Name: Chemistry

Name: Ecology

Related Identifiers
Title: Long-term acclimation to elevated pCO2 alters carbon metabolism and reduces growth in the Antarctic diatom Nitzschia lecointei
Identifier: https://doi.org/10.1098/rspb.2015.1513
Type: DOI
Relation: References
Year: 2015
Source: Proceedings of the Royal Society B-Biological Sciences
Authors: Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James C , Gentili Bernard , Proye Aurélien , Soetaert Karline , Rae James .

Title: Data from: Long-term acclimation to elevated pCO2 alters carbon metabolism and reduces growth in the Antarctic diatom Nitzschia lecointei
Identifier: https://doi.org/10.5061/dryad.h838q
Type: DOI
Relation: References
Year: 2015
Source: Dryad Digital Repository
Authors: Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James C , Gentili Bernard , Proye Aurélien , Soetaert Karline , Rae James .

Title: seacarb: seawater carbonate chemistry with R. R package version 3.1
Identifier: https://cran.r-project.org/package=seacarb
Type: DOI
Relation: References
Year: 2016
Authors: Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Torstensson Anders , Hedblom Mikael , Mattsdotter Björk M y , Chierici Melissa , Wulff Angela , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James C , Gentili Bernard , Proye Aurélien , Soetaert Karline , Rae James .