Simulated ocean acidification reveals winners and losers in coastal phytoplankton.
The oceans absorb ~25% of the annual anthropogenic CO2 emissions. This causes a shift in the marine carbonate chemistry termed ocean acidification (OA). OA is expected to influence metabolic processes in phytoplankton species but it is unclear how the combination of individual physiological changes...
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ftdoajarticles:oai:doaj.org/article:5425df7caa2544f7aea9d278dd88fc11 2023-05-15T17:50:38+02:00 Simulated ocean acidification reveals winners and losers in coastal phytoplankton. Lennart T Bach Santiago Alvarez-Fernandez Thomas Hornick Annegret Stuhr Ulf Riebesell 2017-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0188198 https://doaj.org/article/5425df7caa2544f7aea9d278dd88fc11 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5708705?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0188198 https://doaj.org/article/5425df7caa2544f7aea9d278dd88fc11 PLoS ONE, Vol 12, Iss 11, p e0188198 (2017) Medicine R Science Q article 2017 ftdoajarticles https://doi.org/10.1371/journal.pone.0188198 2022-12-31T12:16:16Z The oceans absorb ~25% of the annual anthropogenic CO2 emissions. This causes a shift in the marine carbonate chemistry termed ocean acidification (OA). OA is expected to influence metabolic processes in phytoplankton species but it is unclear how the combination of individual physiological changes alters the structure of entire phytoplankton communities. To investigate this, we deployed ten pelagic mesocosms (volume ~50 m3) for 113 days at the west coast of Sweden and simulated OA (pCO2 = 760 μatm) in five of them while the other five served as controls (380 μatm). We found: (1) Bulk chlorophyll a concentration and 10 out of 16 investigated phytoplankton groups were significantly and mostly positively affected by elevated CO2 concentrations. However, CO2 effects on abundance or biomass were generally subtle and present only during certain succession stages. (2) Some of the CO2-affected phytoplankton groups seemed to respond directly to altered carbonate chemistry (e.g. diatoms) while others (e.g. Synechococcus) were more likely to be indirectly affected through CO2 sensitive competitors or grazers. (3) Picoeukaryotic phytoplankton (0.2-2 μm) showed the clearest and relatively strong positive CO2 responses during several succession stages. We attribute this not only to a CO2 fertilization of their photosynthetic apparatus but also to an increased nutrient competitiveness under acidified (i.e. low pH) conditions. The stimulating influence of high CO2/low pH on picoeukaryote abundance observed in this experiment is strikingly consistent with results from previous studies, suggesting that picoeukaryotes are among the winners in a future ocean. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles PLOS ONE 12 11 e0188198 |
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language |
English |
topic |
Medicine R Science Q |
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Medicine R Science Q Lennart T Bach Santiago Alvarez-Fernandez Thomas Hornick Annegret Stuhr Ulf Riebesell Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
topic_facet |
Medicine R Science Q |
description |
The oceans absorb ~25% of the annual anthropogenic CO2 emissions. This causes a shift in the marine carbonate chemistry termed ocean acidification (OA). OA is expected to influence metabolic processes in phytoplankton species but it is unclear how the combination of individual physiological changes alters the structure of entire phytoplankton communities. To investigate this, we deployed ten pelagic mesocosms (volume ~50 m3) for 113 days at the west coast of Sweden and simulated OA (pCO2 = 760 μatm) in five of them while the other five served as controls (380 μatm). We found: (1) Bulk chlorophyll a concentration and 10 out of 16 investigated phytoplankton groups were significantly and mostly positively affected by elevated CO2 concentrations. However, CO2 effects on abundance or biomass were generally subtle and present only during certain succession stages. (2) Some of the CO2-affected phytoplankton groups seemed to respond directly to altered carbonate chemistry (e.g. diatoms) while others (e.g. Synechococcus) were more likely to be indirectly affected through CO2 sensitive competitors or grazers. (3) Picoeukaryotic phytoplankton (0.2-2 μm) showed the clearest and relatively strong positive CO2 responses during several succession stages. We attribute this not only to a CO2 fertilization of their photosynthetic apparatus but also to an increased nutrient competitiveness under acidified (i.e. low pH) conditions. The stimulating influence of high CO2/low pH on picoeukaryote abundance observed in this experiment is strikingly consistent with results from previous studies, suggesting that picoeukaryotes are among the winners in a future ocean. |
format |
Article in Journal/Newspaper |
author |
Lennart T Bach Santiago Alvarez-Fernandez Thomas Hornick Annegret Stuhr Ulf Riebesell |
author_facet |
Lennart T Bach Santiago Alvarez-Fernandez Thomas Hornick Annegret Stuhr Ulf Riebesell |
author_sort |
Lennart T Bach |
title |
Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
title_short |
Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
title_full |
Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
title_fullStr |
Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
title_full_unstemmed |
Simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
title_sort |
simulated ocean acidification reveals winners and losers in coastal phytoplankton. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pone.0188198 https://doaj.org/article/5425df7caa2544f7aea9d278dd88fc11 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PLoS ONE, Vol 12, Iss 11, p e0188198 (2017) |
op_relation |
http://europepmc.org/articles/PMC5708705?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0188198 https://doaj.org/article/5425df7caa2544f7aea9d278dd88fc11 |
op_doi |
https://doi.org/10.1371/journal.pone.0188198 |
container_title |
PLOS ONE |
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12 |
container_issue |
11 |
container_start_page |
e0188198 |
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