Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord
The increase in atmospheric carbon dioxide (CO2) results in acidification of the oceans, expected to lead to the fastest drop in ocean pH in the last 300 million years, if anthropogenic emissions are continued at present rate. Due to higher solubility of gases in cold waters and increased exposure t...
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Online Access: | https://epic.awi.de/id/eprint/31977/ https://hdl.handle.net/10013/epic.40684 |
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ftawi:oai:epic.awi.de:31977 2023-05-15T14:27:44+02:00 Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord Sperling, Martin Piontek, Judith Gerdts, Gunnar Wichels, Antje Schunk, H. Roy, A.S. La Roche, J. Gilbert, J. Nissimov, J.I. Bittner, L. Romac, S Riebesell, U. Engel, Anja 2013 https://epic.awi.de/id/eprint/31977/ https://hdl.handle.net/10013/epic.40684 unknown COPERNICUS GESELLSCHAFT MBH Sperling, M. , Piontek, J. , Gerdts, G. orcid:0000-0003-0872-3927 , Wichels, A. orcid:0000-0002-2060-1845 , Schunk, H. , Roy, A. , La Roche, J. , Gilbert, J. , Nissimov, J. , Bittner, L. , Romac, S. , Riebesell, U. and Engel, A. (2013) Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord , Biogeosciences, 10 , pp. 181-191 . doi:10.5194/bg-10-181-2013 <https://doi.org/10.5194/bg-10-181-2013> , hdl:10013/epic.40684 EPIC3Biogeosciences, COPERNICUS GESELLSCHAFT MBH, 10, pp. 181-191, ISSN: 1726-4170 Article isiRev 2013 ftawi https://doi.org/10.5194/bg-10-181-2013 2021-12-24T15:38:14Z The increase in atmospheric carbon dioxide (CO2) results in acidification of the oceans, expected to lead to the fastest drop in ocean pH in the last 300 million years, if anthropogenic emissions are continued at present rate. Due to higher solubility of gases in cold waters and increased exposure to the atmosphere by decreasing ice cover, the Arctic Ocean will be among the areas most strongly affected by ocean acidification. Yet, the response of the plankton community of high latitudes to ocean acidification has not been studied so far. This work is part of the Arctic campaign of the European Project on Ocean Acidification (EPOCA) in 2010, employing 9 in situ mesocosms of about 45 000 l each to simulate ocean acidification in Kongsfjorden, Svalbard (78°56.2' N 11°53.6' E). In the present study, we investigated effects of elevated CO2 on the composition and richness of particle attached (PA; >3 μm) and free living (FL; <3 μm >0.2 μm) bacterial communities by Automated Ribosomal Intergenic Spacer Analysis (ARISA) in 6 of the mesocosms and the surrounding fjord, ranging from 185 to 1050 initial μatm pCO2. ARISA was able to resolve about 20–30 bacterial band-classes per sample and allowed for a detailed investigation of the explicit richness. Both, the PA and the FL bacterioplankton community exhibited a strong temporal development, which was driven mainly by temperature and phytoplankton development. In response to the breakdown of a picophytoplankton bloom (phase 3 of the experiment), number of ARISA-band classes in the PA-community were reduced at low and medium CO2 (∼180–600 μatm) by about 25%, while it was more or less stable at high CO2 (∼ 650–800 μatm). We hypothesise that enhanced viral lysis and enhanced availability of organic substrates at high CO2 resulted in a more diverse PA-bacterial community in the post-bloom phase. Despite lower cell numbers and extracellular enzyme activities in the post-bloom phase, bacterial protein production was enhanced in high CO2-treatments, suggesting a positive effect of community richness on this function and on carbon cycling by bacteria. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Kongsfjord* Kongsfjorden Ocean acidification Phytoplankton Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Svalbard Biogeosciences 10 1 181 191 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The increase in atmospheric carbon dioxide (CO2) results in acidification of the oceans, expected to lead to the fastest drop in ocean pH in the last 300 million years, if anthropogenic emissions are continued at present rate. Due to higher solubility of gases in cold waters and increased exposure to the atmosphere by decreasing ice cover, the Arctic Ocean will be among the areas most strongly affected by ocean acidification. Yet, the response of the plankton community of high latitudes to ocean acidification has not been studied so far. This work is part of the Arctic campaign of the European Project on Ocean Acidification (EPOCA) in 2010, employing 9 in situ mesocosms of about 45 000 l each to simulate ocean acidification in Kongsfjorden, Svalbard (78°56.2' N 11°53.6' E). In the present study, we investigated effects of elevated CO2 on the composition and richness of particle attached (PA; >3 μm) and free living (FL; <3 μm >0.2 μm) bacterial communities by Automated Ribosomal Intergenic Spacer Analysis (ARISA) in 6 of the mesocosms and the surrounding fjord, ranging from 185 to 1050 initial μatm pCO2. ARISA was able to resolve about 20–30 bacterial band-classes per sample and allowed for a detailed investigation of the explicit richness. Both, the PA and the FL bacterioplankton community exhibited a strong temporal development, which was driven mainly by temperature and phytoplankton development. In response to the breakdown of a picophytoplankton bloom (phase 3 of the experiment), number of ARISA-band classes in the PA-community were reduced at low and medium CO2 (∼180–600 μatm) by about 25%, while it was more or less stable at high CO2 (∼ 650–800 μatm). We hypothesise that enhanced viral lysis and enhanced availability of organic substrates at high CO2 resulted in a more diverse PA-bacterial community in the post-bloom phase. Despite lower cell numbers and extracellular enzyme activities in the post-bloom phase, bacterial protein production was enhanced in high CO2-treatments, suggesting a positive effect of community richness on this function and on carbon cycling by bacteria. |
format |
Article in Journal/Newspaper |
author |
Sperling, Martin Piontek, Judith Gerdts, Gunnar Wichels, Antje Schunk, H. Roy, A.S. La Roche, J. Gilbert, J. Nissimov, J.I. Bittner, L. Romac, S Riebesell, U. Engel, Anja |
spellingShingle |
Sperling, Martin Piontek, Judith Gerdts, Gunnar Wichels, Antje Schunk, H. Roy, A.S. La Roche, J. Gilbert, J. Nissimov, J.I. Bittner, L. Romac, S Riebesell, U. Engel, Anja Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
author_facet |
Sperling, Martin Piontek, Judith Gerdts, Gunnar Wichels, Antje Schunk, H. Roy, A.S. La Roche, J. Gilbert, J. Nissimov, J.I. Bittner, L. Romac, S Riebesell, U. Engel, Anja |
author_sort |
Sperling, Martin |
title |
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
title_short |
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
title_full |
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
title_fullStr |
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
title_full_unstemmed |
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord |
title_sort |
effect of elevated co2 on the dynamics of particle-attached and free-living bacterioplankton communities in an arctic fjord |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/31977/ https://hdl.handle.net/10013/epic.40684 |
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 |
EPIC3Biogeosciences, COPERNICUS GESELLSCHAFT MBH, 10, pp. 181-191, ISSN: 1726-4170 |
op_relation |
Sperling, M. , Piontek, J. , Gerdts, G. orcid:0000-0003-0872-3927 , Wichels, A. orcid:0000-0002-2060-1845 , Schunk, H. , Roy, A. , La Roche, J. , Gilbert, J. , Nissimov, J. , Bittner, L. , Romac, S. , Riebesell, U. and Engel, A. (2013) Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord , Biogeosciences, 10 , pp. 181-191 . doi:10.5194/bg-10-181-2013 <https://doi.org/10.5194/bg-10-181-2013> , hdl:10013/epic.40684 |
op_doi |
https://doi.org/10.5194/bg-10-181-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
1 |
container_start_page |
181 |
op_container_end_page |
191 |
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1766301635617751040 |