Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production
Ocean acidification is caused by increasing amounts of carbon dioxide dissolving in the oceans leading to lower seawater pH. We studied the effects of lowered pH on the calanoid copepod Eurytemora affinis during a mesocosm experiment conducted in a coastal area of the Baltic Sea. We measured copepod...
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ftdoajarticles:oai:doaj.org/article:6570ea1236f9489195b364ee49ba86bd 2023-05-15T17:50:07+02:00 Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production A.-K. Almén A. Vehmaa A. Brutemark L. Bach S. Lischka A. Stuhr S. Furuhagen A. Paul J. R. Bermúdez U. Riebesell J. Engström-Öst 2016-02-01T00:00:00Z https://doi.org/10.5194/bg-13-1037-2016 https://doaj.org/article/6570ea1236f9489195b364ee49ba86bd EN eng Copernicus Publications http://www.biogeosciences.net/13/1037/2016/bg-13-1037-2016.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-13-1037-2016 https://doaj.org/article/6570ea1236f9489195b364ee49ba86bd Biogeosciences, Vol 13, Iss 4, Pp 1037-1048 (2016) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2016 ftdoajarticles https://doi.org/10.5194/bg-13-1037-2016 2022-12-31T10:53:08Z Ocean acidification is caused by increasing amounts of carbon dioxide dissolving in the oceans leading to lower seawater pH. We studied the effects of lowered pH on the calanoid copepod Eurytemora affinis during a mesocosm experiment conducted in a coastal area of the Baltic Sea. We measured copepod reproductive success as a function of pH, chlorophyll a concentration, diatom and dinoflagellate biomass, carbon to nitrogen (C : N) ratio of suspended particulate organic matter, as well as copepod fatty acid composition. The laboratory-based experiment was repeated four times during 4 consecutive weeks, with water and copepods sampled from pelagic mesocosms enriched with different CO 2 concentrations. In addition, oxygen radical absorbance capacity (ORAC) of animals from the mesocosms was measured weekly to test whether the copepod's defence against oxidative stress was affected by pH. We found no effect of pH on offspring production. Phytoplankton biomass, as indicated by chlorophyll a concentration and dinoflagellate biomass, had a positive effect. The concentration of polyunsaturated fatty acids in the females was reflected in the eggs and had a positive effect on offspring production, whereas monounsaturated fatty acids of the females were reflected in their eggs but had no significant effect. ORAC was not affected by pH. From these experiments we conclude that E. affinis seems robust against direct exposure to ocean acidification on a physiological level, for the variables covered in the study. E. affinis may not have faced acute pH stress in the treatments as the species naturally face large pH fluctuations. Article in Journal/Newspaper Ocean acidification Copepods Directory of Open Access Journals: DOAJ Articles Biogeosciences 13 4 1037 1048 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 A.-K. Almén A. Vehmaa A. Brutemark L. Bach S. Lischka A. Stuhr S. Furuhagen A. Paul J. R. Bermúdez U. Riebesell J. Engström-Öst Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Ocean acidification is caused by increasing amounts of carbon dioxide dissolving in the oceans leading to lower seawater pH. We studied the effects of lowered pH on the calanoid copepod Eurytemora affinis during a mesocosm experiment conducted in a coastal area of the Baltic Sea. We measured copepod reproductive success as a function of pH, chlorophyll a concentration, diatom and dinoflagellate biomass, carbon to nitrogen (C : N) ratio of suspended particulate organic matter, as well as copepod fatty acid composition. The laboratory-based experiment was repeated four times during 4 consecutive weeks, with water and copepods sampled from pelagic mesocosms enriched with different CO 2 concentrations. In addition, oxygen radical absorbance capacity (ORAC) of animals from the mesocosms was measured weekly to test whether the copepod's defence against oxidative stress was affected by pH. We found no effect of pH on offspring production. Phytoplankton biomass, as indicated by chlorophyll a concentration and dinoflagellate biomass, had a positive effect. The concentration of polyunsaturated fatty acids in the females was reflected in the eggs and had a positive effect on offspring production, whereas monounsaturated fatty acids of the females were reflected in their eggs but had no significant effect. ORAC was not affected by pH. From these experiments we conclude that E. affinis seems robust against direct exposure to ocean acidification on a physiological level, for the variables covered in the study. E. affinis may not have faced acute pH stress in the treatments as the species naturally face large pH fluctuations. |
format |
Article in Journal/Newspaper |
author |
A.-K. Almén A. Vehmaa A. Brutemark L. Bach S. Lischka A. Stuhr S. Furuhagen A. Paul J. R. Bermúdez U. Riebesell J. Engström-Öst |
author_facet |
A.-K. Almén A. Vehmaa A. Brutemark L. Bach S. Lischka A. Stuhr S. Furuhagen A. Paul J. R. Bermúdez U. Riebesell J. Engström-Öst |
author_sort |
A.-K. Almén |
title |
Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
title_short |
Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
title_full |
Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
title_fullStr |
Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
title_full_unstemmed |
Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production |
title_sort |
negligible effects of ocean acidification on eurytemora affinis (copepoda) offspring production |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/bg-13-1037-2016 https://doaj.org/article/6570ea1236f9489195b364ee49ba86bd |
genre |
Ocean acidification Copepods |
genre_facet |
Ocean acidification Copepods |
op_source |
Biogeosciences, Vol 13, Iss 4, Pp 1037-1048 (2016) |
op_relation |
http://www.biogeosciences.net/13/1037/2016/bg-13-1037-2016.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-13-1037-2016 https://doaj.org/article/6570ea1236f9489195b364ee49ba86bd |
op_doi |
https://doi.org/10.5194/bg-13-1037-2016 |
container_title |
Biogeosciences |
container_volume |
13 |
container_issue |
4 |
container_start_page |
1037 |
op_container_end_page |
1048 |
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1766156728880070656 |