Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord
The effect of ocean acidification on the balance between gross community production (GCP) and community respiration (CR) (i.e., net community production, NCP) of plankton communities was investigated in summer 2010 in Kongsfjorden, west of Svalbard. Surface water, which was characterized by low conc...
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Language: | English |
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Copernicus Publications (EGU)
2013
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Online Access: | https://oceanrep.geomar.de/id/eprint/22156/ https://oceanrep.geomar.de/id/eprint/22156/1/bg-10-315-2013.pdf https://doi.org/10.5194/bg-10-315-2013 |
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ftoceanrep:oai:oceanrep.geomar.de:22156 2023-05-15T14:27:33+02:00 Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord Tanaka, T Alliouane, S. Bellerby, R. G. B. Czerny, J. de Kluijver, A. Riebesell, Ulf Schulz, Kai G. Silyakova, A. Gattuso, J.-P. 2013 text https://oceanrep.geomar.de/id/eprint/22156/ https://oceanrep.geomar.de/id/eprint/22156/1/bg-10-315-2013.pdf https://doi.org/10.5194/bg-10-315-2013 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/22156/1/bg-10-315-2013.pdf Tanaka, T., Alliouane, S., Bellerby, R. G. B., Czerny, J., de Kluijver, A., Riebesell, U. , Schulz, K. G., Silyakova, A. and Gattuso, J. P. (2013) Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord. Open Access Biogeosciences (BG), 10 (1). pp. 315-325. DOI 10.5194/bg-10-315-2013 <https://doi.org/10.5194/bg-10-315-2013>. doi:10.5194/bg-10-315-2013 cc_by info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2013 ftoceanrep https://doi.org/10.5194/bg-10-315-2013 2023-04-07T15:10:30Z The effect of ocean acidification on the balance between gross community production (GCP) and community respiration (CR) (i.e., net community production, NCP) of plankton communities was investigated in summer 2010 in Kongsfjorden, west of Svalbard. Surface water, which was characterized by low concentrations of dissolved inorganic nutrients and chlorophyll a (a proxy of phytoplankton biomass), was enclosed in nine mesocosms and subjected to eight pCO2 levels (two replicated controls and seven enhanced pCO2 treatments) for one month. Nutrients were added to all mesocosms on day 13 of the experiment, and thereafter increase of chlorophyll a was provoked in all mesocosms. No clear trend in response to increasing pCO2 was found in the daily values of NCP, CR, and GCP. For further analysis, these parameters were cumulated for the following three periods: phase 1 – end of CO2 manipulation until nutrient addition (t4 to t13); phase 2 – nutrient addition until the second chlorophyll a minimum (t14 to t21); phase 3 – the second chlorophyll a minimum until the end of this study (t22 to t28). A significant response was detected as a decrease of NCP with increasing pCO2 during phase 3. CR was relatively stable throughout the experiment in all mesocosms. As a result, the cumulative GCP significantly decreased with increasing pCO2 during phase 3. After the nutrient addition, the ratios of cumulative NCP to cumulative consumption of NO3 and PO4 showed a significant decrease during phase 3 with increasing pCO2. The results suggest that elevated pCO2 influenced cumulative NCP and stoichiometric C and nutrient coupling of the plankton community in a high-latitude fjord only for a limited period. However provided that there were some differences or weak correlations between NCP data based on different methods in the same experiment, this conclusion should be taken with caution. Article in Journal/Newspaper Arctic Arctic Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Svalbard Biogeosciences 10 1 315 325 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The effect of ocean acidification on the balance between gross community production (GCP) and community respiration (CR) (i.e., net community production, NCP) of plankton communities was investigated in summer 2010 in Kongsfjorden, west of Svalbard. Surface water, which was characterized by low concentrations of dissolved inorganic nutrients and chlorophyll a (a proxy of phytoplankton biomass), was enclosed in nine mesocosms and subjected to eight pCO2 levels (two replicated controls and seven enhanced pCO2 treatments) for one month. Nutrients were added to all mesocosms on day 13 of the experiment, and thereafter increase of chlorophyll a was provoked in all mesocosms. No clear trend in response to increasing pCO2 was found in the daily values of NCP, CR, and GCP. For further analysis, these parameters were cumulated for the following three periods: phase 1 – end of CO2 manipulation until nutrient addition (t4 to t13); phase 2 – nutrient addition until the second chlorophyll a minimum (t14 to t21); phase 3 – the second chlorophyll a minimum until the end of this study (t22 to t28). A significant response was detected as a decrease of NCP with increasing pCO2 during phase 3. CR was relatively stable throughout the experiment in all mesocosms. As a result, the cumulative GCP significantly decreased with increasing pCO2 during phase 3. After the nutrient addition, the ratios of cumulative NCP to cumulative consumption of NO3 and PO4 showed a significant decrease during phase 3 with increasing pCO2. The results suggest that elevated pCO2 influenced cumulative NCP and stoichiometric C and nutrient coupling of the plankton community in a high-latitude fjord only for a limited period. However provided that there were some differences or weak correlations between NCP data based on different methods in the same experiment, this conclusion should be taken with caution. |
format |
Article in Journal/Newspaper |
author |
Tanaka, T Alliouane, S. Bellerby, R. G. B. Czerny, J. de Kluijver, A. Riebesell, Ulf Schulz, Kai G. Silyakova, A. Gattuso, J.-P. |
spellingShingle |
Tanaka, T Alliouane, S. Bellerby, R. G. B. Czerny, J. de Kluijver, A. Riebesell, Ulf Schulz, Kai G. Silyakova, A. Gattuso, J.-P. Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
author_facet |
Tanaka, T Alliouane, S. Bellerby, R. G. B. Czerny, J. de Kluijver, A. Riebesell, Ulf Schulz, Kai G. Silyakova, A. Gattuso, J.-P. |
author_sort |
Tanaka, T |
title |
Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
title_short |
Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
title_full |
Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
title_fullStr |
Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
title_full_unstemmed |
Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord |
title_sort |
effect of increased pco2 on the planktonic metabolic balance during a mesocosm experiment in an arctic fjord |
publisher |
Copernicus Publications (EGU) |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/22156/ https://oceanrep.geomar.de/id/eprint/22156/1/bg-10-315-2013.pdf https://doi.org/10.5194/bg-10-315-2013 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard |
genre_facet |
Arctic Arctic Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard |
op_relation |
https://oceanrep.geomar.de/id/eprint/22156/1/bg-10-315-2013.pdf Tanaka, T., Alliouane, S., Bellerby, R. G. B., Czerny, J., de Kluijver, A., Riebesell, U. , Schulz, K. G., Silyakova, A. and Gattuso, J. P. (2013) Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord. Open Access Biogeosciences (BG), 10 (1). pp. 315-325. DOI 10.5194/bg-10-315-2013 <https://doi.org/10.5194/bg-10-315-2013>. doi:10.5194/bg-10-315-2013 |
op_rights |
cc_by info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-10-315-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
1 |
container_start_page |
315 |
op_container_end_page |
325 |
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1766301348999987200 |