CO2 increases C-14 primary production in an Arctic plankton community
Responses to ocean acidification in plankton communities were studied during a CO2-enrichment experiment in the Arctic Ocean, accomplished from June to July 2010 in Kongsfjorden, Svalbard (78°56′ 2′′ N, 11°53′ 6′′ E). Enclosed in 9 mesocosms (volume: 43.9–47.6 m3), plankton was exposed to CO2 concen...
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Format: | Article in Journal/Newspaper |
Language: | English |
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European Geosciences Union
2014
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Online Access: | http://hdl.handle.net/11250/194282 https://doi.org/10.5194/bg-10-1291-2013 |
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ftnorskinstvf:oai:niva.brage.unit.no:11250/194282 2023-05-15T14:25:52+02:00 CO2 increases C-14 primary production in an Arctic plankton community Engel, Anja Borchard, Corinna Piontek, Judith Schulz, Kai Riebesell, Ulf Bellerby, Richard 2014-02-27T11:03:59Z application/pdf http://hdl.handle.net/11250/194282 https://doi.org/10.5194/bg-10-1291-2013 eng eng European Geosciences Union Engel, A., Borchard, C., Piontek, J. et al. 2013. CO2 increases 14-C primary production in an Arctic plankton community. Biogeosciences 10(3) 1291-1308 DOI:10.5194/bg-10-1291-2013 urn:issn:1726-4170 http://hdl.handle.net/11250/194282 https://doi.org/10.5194/bg-10-1291-2013 cristin:1036113 https://creativecommons.org/licenses/by/3.0/ © Author(s) 2013. CC Attribution 3.0 License Creative Commons Attribution License 3.0 CC-BY 1291-1308 10 Biogeosciences 3 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Journal article Peer reviewed 2014 ftnorskinstvf https://doi.org/10.5194/bg-10-1291-2013 2023-03-01T23:44:15Z Responses to ocean acidification in plankton communities were studied during a CO2-enrichment experiment in the Arctic Ocean, accomplished from June to July 2010 in Kongsfjorden, Svalbard (78°56′ 2′′ N, 11°53′ 6′′ E). Enclosed in 9 mesocosms (volume: 43.9–47.6 m3), plankton was exposed to CO2 concentrations, ranging from glacial to projected mid-next-century levels. Fertilization with inorganic nutrients at day 13 of the experiment supported the accumulation of phytoplankton biomass, as indicated by two periods of high chl a concentration. This study tested for CO2 sensitivities in primary production (PP) of particulate organic carbon (PPPOC) and of dissolved organic carbon (PPDOC). Therefore, 14C-bottle incubations (24 h) of mesocosm samples were performed at 1 m depth receiving about 60% of incoming radiation. PP for all mesocosms averaged 8.06 ± 3.64 μmol C L−1 d−1 and was slightly higher than in the outside fjord system. Comparison between mesocosms revealed significantly higher PPPOC at elevated compared to low pCO2 after nutrient addition. PPDOC was significantly higher in CO2-enriched mesocosms before as well as after nutrient addition, suggesting that CO2 had a direct influence on DOC production. DOC concentrations inside the mesocosms increased before nutrient addition and more in high CO2 mesocosms. After addition of nutrients, however, further DOC accumulation was negligible and not significantly different between treatments, indicating rapid utilization of freshly produced DOC. Bacterial biomass production (BP) was coupled to PP in all treatments, indicating that 3.5 ± 1.9% of PP or 21.6 ± 12.5% of PPDOC provided on average sufficient carbon for synthesis of bacterial biomass. During the later course of the bloom, the response of 14C-based PP rates to CO2 enrichment differed from net community production (NCP) rates that were also determined during this mesocosm campaign. We conclude that the enhanced release of labile DOC during autotrophic production at high CO2 exceedingly stimulated activities of ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard Norwegian Institute for Water research: NIVA Open Access Archive (Brage) Arctic Arctic Ocean Svalbard Biogeosciences 10 3 1291 1308 |
institution |
Open Polar |
collection |
Norwegian Institute for Water research: NIVA Open Access Archive (Brage) |
op_collection_id |
ftnorskinstvf |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Engel, Anja Borchard, Corinna Piontek, Judith Schulz, Kai Riebesell, Ulf Bellerby, Richard CO2 increases C-14 primary production in an Arctic plankton community |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 |
description |
Responses to ocean acidification in plankton communities were studied during a CO2-enrichment experiment in the Arctic Ocean, accomplished from June to July 2010 in Kongsfjorden, Svalbard (78°56′ 2′′ N, 11°53′ 6′′ E). Enclosed in 9 mesocosms (volume: 43.9–47.6 m3), plankton was exposed to CO2 concentrations, ranging from glacial to projected mid-next-century levels. Fertilization with inorganic nutrients at day 13 of the experiment supported the accumulation of phytoplankton biomass, as indicated by two periods of high chl a concentration. This study tested for CO2 sensitivities in primary production (PP) of particulate organic carbon (PPPOC) and of dissolved organic carbon (PPDOC). Therefore, 14C-bottle incubations (24 h) of mesocosm samples were performed at 1 m depth receiving about 60% of incoming radiation. PP for all mesocosms averaged 8.06 ± 3.64 μmol C L−1 d−1 and was slightly higher than in the outside fjord system. Comparison between mesocosms revealed significantly higher PPPOC at elevated compared to low pCO2 after nutrient addition. PPDOC was significantly higher in CO2-enriched mesocosms before as well as after nutrient addition, suggesting that CO2 had a direct influence on DOC production. DOC concentrations inside the mesocosms increased before nutrient addition and more in high CO2 mesocosms. After addition of nutrients, however, further DOC accumulation was negligible and not significantly different between treatments, indicating rapid utilization of freshly produced DOC. Bacterial biomass production (BP) was coupled to PP in all treatments, indicating that 3.5 ± 1.9% of PP or 21.6 ± 12.5% of PPDOC provided on average sufficient carbon for synthesis of bacterial biomass. During the later course of the bloom, the response of 14C-based PP rates to CO2 enrichment differed from net community production (NCP) rates that were also determined during this mesocosm campaign. We conclude that the enhanced release of labile DOC during autotrophic production at high CO2 exceedingly stimulated activities of ... |
format |
Article in Journal/Newspaper |
author |
Engel, Anja Borchard, Corinna Piontek, Judith Schulz, Kai Riebesell, Ulf Bellerby, Richard |
author_facet |
Engel, Anja Borchard, Corinna Piontek, Judith Schulz, Kai Riebesell, Ulf Bellerby, Richard |
author_sort |
Engel, Anja |
title |
CO2 increases C-14 primary production in an Arctic plankton community |
title_short |
CO2 increases C-14 primary production in an Arctic plankton community |
title_full |
CO2 increases C-14 primary production in an Arctic plankton community |
title_fullStr |
CO2 increases C-14 primary production in an Arctic plankton community |
title_full_unstemmed |
CO2 increases C-14 primary production in an Arctic plankton community |
title_sort |
co2 increases c-14 primary production in an arctic plankton community |
publisher |
European Geosciences Union |
publishDate |
2014 |
url |
http://hdl.handle.net/11250/194282 https://doi.org/10.5194/bg-10-1291-2013 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Arctic Ocean Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard |
genre_facet |
Arctic Arctic Arctic Ocean Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard |
op_source |
1291-1308 10 Biogeosciences 3 |
op_relation |
Engel, A., Borchard, C., Piontek, J. et al. 2013. CO2 increases 14-C primary production in an Arctic plankton community. Biogeosciences 10(3) 1291-1308 DOI:10.5194/bg-10-1291-2013 urn:issn:1726-4170 http://hdl.handle.net/11250/194282 https://doi.org/10.5194/bg-10-1291-2013 cristin:1036113 |
op_rights |
https://creativecommons.org/licenses/by/3.0/ © Author(s) 2013. CC Attribution 3.0 License Creative Commons Attribution License 3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-10-1291-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
3 |
container_start_page |
1291 |
op_container_end_page |
1308 |
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1766298342166364160 |