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://epic.awi.de/id/eprint/39655/ https://epic.awi.de/id/eprint/39655/2/Eberlein2016MEPS.pdf https://hdl.handle.net/10013/epic.46830 https://hdl.handle.net/10013/epic.46830.d002 |
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ftawi:oai:epic.awi.de:39655 2024-09-15T18:27:57+00:00 Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species Eberlein, Tim Van de Waal, Dedmer B. Brandenburg, Karen M. John, Uwe Voss, Maren Achterberg, E. P. Rost, Bjoern 2016 application/pdf https://epic.awi.de/id/eprint/39655/ https://epic.awi.de/id/eprint/39655/2/Eberlein2016MEPS.pdf https://hdl.handle.net/10013/epic.46830 https://hdl.handle.net/10013/epic.46830.d002 unknown Inter-Research · www.int-res.com https://epic.awi.de/id/eprint/39655/2/Eberlein2016MEPS.pdf https://hdl.handle.net/10013/epic.46830.d002 Eberlein, T. , Van de Waal, D. B. , Brandenburg, K. M. , John, U. orcid:0000-0002-1297-4086 , Voss, M. , Achterberg, E. P. and Rost, B. orcid:0000-0001-5452-5505 (2016) Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species , MARINE ECOLOGY PROGRESS SERIES, 543 , pp. 127-140 . doi:10.3354/meps11568 <https://doi.org/10.3354/meps11568> , hdl:10013/epic.46830 EPIC3MARINE ECOLOGY PROGRESS SERIES, Inter-Research · www.int-res.com, 543, pp. 127-140 Article isiRev 2016 ftawi https://doi.org/10.3354/meps11568 2024-06-24T04:13:16Z 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 (pCO2) ranging between 250 and 1000 μatm. Ratios of particulate organic carbon (POC) to organic nitrogen (PON) were elevated under N limitation, but also showed a decreasing trend with increasing pCO2. PON production rates were highest and affinities for dissolved inorganic N were lowest under elevated pCO2, 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 pCO2. Consequently, cellular toxicity under N limitation was highest under elevated pCO2. All in all, our observations imply reduced N stress under elevated pCO2, 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Marine Ecology Progress Series 543 127 140 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 (pCO2) ranging between 250 and 1000 μatm. Ratios of particulate organic carbon (POC) to organic nitrogen (PON) were elevated under N limitation, but also showed a decreasing trend with increasing pCO2. PON production rates were highest and affinities for dissolved inorganic N were lowest under elevated pCO2, 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 pCO2. Consequently, cellular toxicity under N limitation was highest under elevated pCO2. All in all, our observations imply reduced N stress under elevated pCO2, 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, Tim Van de Waal, Dedmer B. Brandenburg, Karen M. John, Uwe Voss, Maren Achterberg, E. P. Rost, Bjoern |
spellingShingle |
Eberlein, Tim Van de Waal, Dedmer B. Brandenburg, Karen M. John, Uwe Voss, Maren Achterberg, E. P. Rost, Bjoern Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species |
author_facet |
Eberlein, Tim Van de Waal, Dedmer B. Brandenburg, Karen M. John, Uwe Voss, Maren Achterberg, E. P. Rost, Bjoern |
author_sort |
Eberlein, Tim |
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 · www.int-res.com |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39655/ https://epic.awi.de/id/eprint/39655/2/Eberlein2016MEPS.pdf https://hdl.handle.net/10013/epic.46830 https://hdl.handle.net/10013/epic.46830.d002 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
EPIC3MARINE ECOLOGY PROGRESS SERIES, Inter-Research · www.int-res.com, 543, pp. 127-140 |
op_relation |
https://epic.awi.de/id/eprint/39655/2/Eberlein2016MEPS.pdf https://hdl.handle.net/10013/epic.46830.d002 Eberlein, T. , Van de Waal, D. B. , Brandenburg, K. M. , John, U. orcid:0000-0002-1297-4086 , Voss, M. , Achterberg, E. P. and Rost, B. orcid:0000-0001-5452-5505 (2016) Interactive effects of ocean acidification and nitrogen limitation on two bloom-forming dinoflagellate species , MARINE ECOLOGY PROGRESS SERIES, 543 , pp. 127-140 . doi:10.3354/meps11568 <https://doi.org/10.3354/meps11568> , hdl:10013/epic.46830 |
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_ |
1810469246676762624 |