Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species
Global climate change involves an increase in oceanic CO2 concentrations as well as thermal stratification of the water column, thereby reducing nutrient supply from deep to surface waters. Changes in inorganic carbon (C) or nitrogen (N) availability have been shown to affect marine primary producti...
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Online Access: | https://oceanrep.geomar.de/id/eprint/31814/ https://oceanrep.geomar.de/id/eprint/31814/1/m543p127.pdf https://doi.org/10.3354/meps11568 |
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ftoceanrep:oai:oceanrep.geomar.de:31814 2023-05-15T17:50:45+02:00 Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species Eberlein, T Van de Waal, D. B. Brandenburg, K. M. John, U Voss, M Achterberg, Eric P. Rost, B 2016-02-03 text https://oceanrep.geomar.de/id/eprint/31814/ https://oceanrep.geomar.de/id/eprint/31814/1/m543p127.pdf https://doi.org/10.3354/meps11568 en eng Inter Research https://oceanrep.geomar.de/id/eprint/31814/1/m543p127.pdf Eberlein, T., Van de Waal, D. B., Brandenburg, K. M., John, U., Voss, M., Achterberg, E. P. and Rost, B. (2016) Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species. Open Access Marine Ecology Progress Series, 543 . pp. 127-140. DOI 10.3354/meps11568 <https://doi.org/10.3354/meps11568>. doi:10.3354/meps11568 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2016 ftoceanrep https://doi.org/10.3354/meps11568 2023-04-07T15:24:21Z Global climate change involves an increase in oceanic CO2 concentrations as well as thermal stratification of the water column, thereby reducing nutrient supply from deep to surface waters. Changes in inorganic carbon (C) or nitrogen (N) availability have been shown to affect marine primary production, yet little is known about their interactive effects. To test for these effects, we conducted continuous culture experiments under N limitation and exposed the bloomforming dinoflagellate species Scrippsiella trochoidea and Alexandrium fundyense (formerly A. tamarense) to CO2 partial pressures (pCO(2)) ranging between 250 and 1000 mu atm. Ratios of particulate organic carbon (POC) to organic nitrogen (PON) were elevated under N limitation, but also showed a decreasing trend with increasing pCO(2). PON production rates were highest and affinities for dissolved inorganic N were lowest under elevated pCO(2), and our data thus demonstrate a CO2-dependent trade-off in N assimilation. In A. fundyense, quotas of paralytic shellfish poisoning toxins were lowered under N limitation, but the offset to those obtained under N-replete conditions became smaller with increasing pCO(2). Consequently, cellular toxicity under N limitation was highest under elevated pCO(2). All in all, our observations imply reduced N stress under elevated pCO(2), which we attribute to a reallocation of energy from C to N assimilation as a consequence of lowered costs in C acquisition. Such interactive effects of ocean acidification and nutrient limitation may favor species with adjustable carbon concentrating mechanisms and have consequences for their competitive success in a future ocean. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Marine Ecology Progress Series 543 127 140 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Global climate change involves an increase in oceanic CO2 concentrations as well as thermal stratification of the water column, thereby reducing nutrient supply from deep to surface waters. Changes in inorganic carbon (C) or nitrogen (N) availability have been shown to affect marine primary production, yet little is known about their interactive effects. To test for these effects, we conducted continuous culture experiments under N limitation and exposed the bloomforming dinoflagellate species Scrippsiella trochoidea and Alexandrium fundyense (formerly A. tamarense) to CO2 partial pressures (pCO(2)) ranging between 250 and 1000 mu atm. Ratios of particulate organic carbon (POC) to organic nitrogen (PON) were elevated under N limitation, but also showed a decreasing trend with increasing pCO(2). PON production rates were highest and affinities for dissolved inorganic N were lowest under elevated pCO(2), and our data thus demonstrate a CO2-dependent trade-off in N assimilation. In A. fundyense, quotas of paralytic shellfish poisoning toxins were lowered under N limitation, but the offset to those obtained under N-replete conditions became smaller with increasing pCO(2). Consequently, cellular toxicity under N limitation was highest under elevated pCO(2). All in all, our observations imply reduced N stress under elevated pCO(2), which we attribute to a reallocation of energy from C to N assimilation as a consequence of lowered costs in C acquisition. Such interactive effects of ocean acidification and nutrient limitation may favor species with adjustable carbon concentrating mechanisms and have consequences for their competitive success in a future ocean. |
format |
Article in Journal/Newspaper |
author |
Eberlein, T Van de Waal, D. B. Brandenburg, K. M. John, U Voss, M Achterberg, Eric P. Rost, B |
spellingShingle |
Eberlein, T Van de Waal, D. B. Brandenburg, K. M. John, U Voss, M Achterberg, Eric P. Rost, B Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
author_facet |
Eberlein, T Van de Waal, D. B. Brandenburg, K. M. John, U Voss, M Achterberg, Eric P. Rost, B |
author_sort |
Eberlein, T |
title |
Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
title_short |
Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
title_full |
Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
title_fullStr |
Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
title_full_unstemmed |
Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
title_sort |
interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
publisher |
Inter Research |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/31814/ https://oceanrep.geomar.de/id/eprint/31814/1/m543p127.pdf https://doi.org/10.3354/meps11568 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/31814/1/m543p127.pdf Eberlein, T., Van de Waal, D. B., Brandenburg, K. M., John, U., Voss, M., Achterberg, E. P. and Rost, B. (2016) Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species. Open Access Marine Ecology Progress Series, 543 . pp. 127-140. DOI 10.3354/meps11568 <https://doi.org/10.3354/meps11568>. doi:10.3354/meps11568 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps11568 |
container_title |
Marine Ecology Progress Series |
container_volume |
543 |
container_start_page |
127 |
op_container_end_page |
140 |
_version_ |
1766157643459592192 |