Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica
Ocean acidification, caused by elevated seawater carbon dioxide levels, may have a deleterious impact on energetic processes in animals. Here we show that high PCO2 can suppress metabolism, measured as oxygen consumption, in the pteropod, L. helicina forma antarctica, by ~20%. The rates measured at...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:bio_facpubs-1061 2024-09-15T17:42:54+00:00 Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica Seibel, Brad A. Maas, Amy E. Dierssen, Heidi M. 2012-04-20T07:00:00Z application/pdf https://digitalcommons.uri.edu/bio_facpubs/57 https://doi.org/10.1371/journal.pone.0030464 https://digitalcommons.uri.edu/context/bio_facpubs/article/1061/viewcontent/journal.pone.0030464.pdf unknown DigitalCommons@URI https://digitalcommons.uri.edu/bio_facpubs/57 doi:10.1371/journal.pone.0030464 https://digitalcommons.uri.edu/context/bio_facpubs/article/1061/viewcontent/journal.pone.0030464.pdf http://creativecommons.org/licenses/by/3.0/ Biological Sciences Faculty Publications text 2012 ftunivrhodeislan https://doi.org/10.1371/journal.pone.0030464 2024-08-21T00:09:33Z Ocean acidification, caused by elevated seawater carbon dioxide levels, may have a deleterious impact on energetic processes in animals. Here we show that high PCO2 can suppress metabolism, measured as oxygen consumption, in the pteropod, L. helicina forma antarctica, by ~20%. The rates measured at 180–380 µatm (MO2 = 1.25 M−0.25, p = 0.007) were significantly higher (ANCOVA, p = 0.004) than those measured at elevated target CO2 levels in 2007 (789–1000 µatm, = 0.78 M−0.32, p = 0.0008; Fig. 1). However, we further demonstrate metabolic plasticity in response to regional phytoplankton concentration and that the response to CO2 is dependent on the baseline level of metabolism. We hypothesize that reduced regional Chl a levels in 2008 suppressed metabolism and masked the effect of ocean acidification. This effect of food limitation was not, we postulate, merely a result of gut clearance and specific dynamic action, but rather represents a sustained metabolic response to regional conditions. Thus, pteropod populations may be compromised by climate change, both directly via CO2-induced metabolic suppression, and indirectly via quantitative and qualitative changes to the phytoplankton community. Without the context provided by long-term observations (four seasons) and a multi-faceted laboratory analysis of the parameters affecting energetics, the complex response of polar pteropods to ocean acidification may be masked or misinterpreted. Text Antarc* Antarctica Limacina helicina Ocean acidification University of Rhode Island: DigitalCommons@URI PLoS ONE 7 4 e30464 |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
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Ocean acidification, caused by elevated seawater carbon dioxide levels, may have a deleterious impact on energetic processes in animals. Here we show that high PCO2 can suppress metabolism, measured as oxygen consumption, in the pteropod, L. helicina forma antarctica, by ~20%. The rates measured at 180–380 µatm (MO2 = 1.25 M−0.25, p = 0.007) were significantly higher (ANCOVA, p = 0.004) than those measured at elevated target CO2 levels in 2007 (789–1000 µatm, = 0.78 M−0.32, p = 0.0008; Fig. 1). However, we further demonstrate metabolic plasticity in response to regional phytoplankton concentration and that the response to CO2 is dependent on the baseline level of metabolism. We hypothesize that reduced regional Chl a levels in 2008 suppressed metabolism and masked the effect of ocean acidification. This effect of food limitation was not, we postulate, merely a result of gut clearance and specific dynamic action, but rather represents a sustained metabolic response to regional conditions. Thus, pteropod populations may be compromised by climate change, both directly via CO2-induced metabolic suppression, and indirectly via quantitative and qualitative changes to the phytoplankton community. Without the context provided by long-term observations (four seasons) and a multi-faceted laboratory analysis of the parameters affecting energetics, the complex response of polar pteropods to ocean acidification may be masked or misinterpreted. |
format |
Text |
author |
Seibel, Brad A. Maas, Amy E. Dierssen, Heidi M. |
spellingShingle |
Seibel, Brad A. Maas, Amy E. Dierssen, Heidi M. Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
author_facet |
Seibel, Brad A. Maas, Amy E. Dierssen, Heidi M. |
author_sort |
Seibel, Brad A. |
title |
Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
title_short |
Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
title_full |
Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
title_fullStr |
Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
title_full_unstemmed |
Energetic Plasticity Underlies a Variable Response to Ocean Acidification in the Pteropod, Limacina helicina antarctica |
title_sort |
energetic plasticity underlies a variable response to ocean acidification in the pteropod, limacina helicina antarctica |
publisher |
DigitalCommons@URI |
publishDate |
2012 |
url |
https://digitalcommons.uri.edu/bio_facpubs/57 https://doi.org/10.1371/journal.pone.0030464 https://digitalcommons.uri.edu/context/bio_facpubs/article/1061/viewcontent/journal.pone.0030464.pdf |
genre |
Antarc* Antarctica Limacina helicina Ocean acidification |
genre_facet |
Antarc* Antarctica Limacina helicina Ocean acidification |
op_source |
Biological Sciences Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/bio_facpubs/57 doi:10.1371/journal.pone.0030464 https://digitalcommons.uri.edu/context/bio_facpubs/article/1061/viewcontent/journal.pone.0030464.pdf |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0030464 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
4 |
container_start_page |
e30464 |
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1810489721693929472 |