Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity
Ocean acidification and warming are two main consequences of climate change that can directly affect biological and ecosystem processes in marine habitats. The Arctic Ocean is the region of the world experiencing climate change at the steepest rate compared with other latitudes. Since marine plankto...
Published in: | Frontiers in Microbiology |
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Main Authors: | , , , , , , , , , , |
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Format: | Article in Journal/Newspaper |
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Frontiers Media SA
2019
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Online Access: | http://hdl.handle.net/10754/631773 https://doi.org/10.3389/fmicb.2019.00494 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/631773 |
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openpolar |
institution |
Open Polar |
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King Abdullah University of Science and Technology: KAUST Repository |
op_collection_id |
ftkingabdullahun |
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unknown |
topic |
pCO2 temperature microbial food-webs viral life cycle Arctic Ocea |
spellingShingle |
pCO2 temperature microbial food-webs viral life cycle Arctic Ocea Vaqué, Dolors Lara, Elena Arrieta, Jesús M. Holding, Johnna Sà, Elisabet L. Hendriks, Iris E. Camba, Alexandra Alvarez, Marta Agusti, Susana Wassmann, Paul F. Duarte, Carlos M. Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
topic_facet |
pCO2 temperature microbial food-webs viral life cycle Arctic Ocea |
description |
Ocean acidification and warming are two main consequences of climate change that can directly affect biological and ecosystem processes in marine habitats. The Arctic Ocean is the region of the world experiencing climate change at the steepest rate compared with other latitudes. Since marine planktonic microorganisms play a key role in the biogeochemical cycles in the ocean it is crucial to simultaneously evaluate the effect of warming and increasing CO2 on marine microbial communities. In 20 L experimental microcosms filled with water from a high-Arctic fjord (Svalbard), we examined changes in phototrophic and heterotrophic microbial abundances and processes [bacterial production (BP) and mortality], and viral activity (lytic and lysogenic) in relation to warming and elevated CO2. The summer microbial plankton community living at 1.4°C in situ temperature, was exposed to increased CO2 concentrations (135–2,318 μatm) in three controlled temperature treatments (1, 6, and 10°C) at the UNIS installations in Longyearbyen (Svalbard), in summer 2010. Results showed that chlorophyll a concentration decreased at increasing temperatures, while BP significantly increased with pCO2 at 6 and 10°C. Lytic viral production was not affected by changes in pCO2 and temperature, while lysogeny increased significantly at increasing levels of pCO2, especially at 10°C (R2 = 0.858, p = 0.02). Moreover, protistan grazing rates showed a positive interaction between pCO2 and temperature. The averaged percentage of bacteria grazed per day was higher (19.56 ± 2.77% d-1) than the averaged percentage of lysed bacteria by virus (7.18 ± 1.50% d-1) for all treatments. Furthermore, the relationship among microbial abundances and processes showed that BP was significantly related to phototrophic pico/nanoflagellate abundance in the 1°C and the 6°C treatments, and BP triggered viral activity, mainly lysogeny at 6 and 10°C, while bacterial mortality rates was significantly related to bacterial abundances at 6°C. Consequently, our experimental ... |
author2 |
Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Red Sea Research Center (RSRC) Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar (CSIC), Barcelona, Spain Centro Oceanográfico de Canarias (IEO), Santa Cruz de Tenerife, Spain Arctic Research Centre, Aarhus University, Aarhus, Denmark Global Change Research Group, IMEDEA (CSIC-UIB) Institut Mediterrani d’Estudis Avançats, Esporles, Spain Instituto Español de Oceanografía, A Coruña, Spain Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø, Norway |
format |
Article in Journal/Newspaper |
author |
Vaqué, Dolors Lara, Elena Arrieta, Jesús M. Holding, Johnna Sà, Elisabet L. Hendriks, Iris E. Camba, Alexandra Alvarez, Marta Agusti, Susana Wassmann, Paul F. Duarte, Carlos M. |
author_facet |
Vaqué, Dolors Lara, Elena Arrieta, Jesús M. Holding, Johnna Sà, Elisabet L. Hendriks, Iris E. Camba, Alexandra Alvarez, Marta Agusti, Susana Wassmann, Paul F. Duarte, Carlos M. |
author_sort |
Vaqué, Dolors |
title |
Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
title_short |
Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
title_full |
Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
title_fullStr |
Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
title_full_unstemmed |
Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
title_sort |
warming and co2 enhance arctic heterotrophic microbial activity |
publisher |
Frontiers Media SA |
publishDate |
2019 |
url |
http://hdl.handle.net/10754/631773 https://doi.org/10.3389/fmicb.2019.00494 |
genre |
Arctic Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS |
genre_facet |
Arctic Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmicb.2019.00494/full Vaqué D, Lara E, Arrieta JM, Holding J, Sà EL, et al. (2019) Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity. Frontiers in Microbiology 10. Available: http://dx.doi.org/10.3389/fmicb.2019.00494. doi:10.3389/fmicb.2019.00494 1664-302X Frontiers in Microbiology http://hdl.handle.net/10754/631773 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmicb.2019.00494 |
container_title |
Frontiers in Microbiology |
container_volume |
10 |
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1786808307676086272 |
spelling |
ftkingabdullahun:oai:repository.kaust.edu.sa:10754/631773 2023-12-31T10:02:01+01:00 Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity Vaqué, Dolors Lara, Elena Arrieta, Jesús M. Holding, Johnna Sà, Elisabet L. Hendriks, Iris E. Camba, Alexandra Alvarez, Marta Agusti, Susana Wassmann, Paul F. Duarte, Carlos M. Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Red Sea Research Center (RSRC) Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar (CSIC), Barcelona, Spain Centro Oceanográfico de Canarias (IEO), Santa Cruz de Tenerife, Spain Arctic Research Centre, Aarhus University, Aarhus, Denmark Global Change Research Group, IMEDEA (CSIC-UIB) Institut Mediterrani d’Estudis Avançats, Esporles, Spain Instituto Español de Oceanografía, A Coruña, Spain Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø, Norway 2019-03-20 application/pdf image/tiff application/vnd.openxmlformats-officedocument.wordprocessingml.document http://hdl.handle.net/10754/631773 https://doi.org/10.3389/fmicb.2019.00494 unknown Frontiers Media SA https://www.frontiersin.org/articles/10.3389/fmicb.2019.00494/full Vaqué D, Lara E, Arrieta JM, Holding J, Sà EL, et al. (2019) Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity. Frontiers in Microbiology 10. Available: http://dx.doi.org/10.3389/fmicb.2019.00494. doi:10.3389/fmicb.2019.00494 1664-302X Frontiers in Microbiology http://hdl.handle.net/10754/631773 This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. http://creativecommons.org/licenses/by/4.0/ pCO2 temperature microbial food-webs viral life cycle Arctic Ocea Article 2019 ftkingabdullahun https://doi.org/10.3389/fmicb.2019.00494 2023-12-02T20:22:21Z Ocean acidification and warming are two main consequences of climate change that can directly affect biological and ecosystem processes in marine habitats. The Arctic Ocean is the region of the world experiencing climate change at the steepest rate compared with other latitudes. Since marine planktonic microorganisms play a key role in the biogeochemical cycles in the ocean it is crucial to simultaneously evaluate the effect of warming and increasing CO2 on marine microbial communities. In 20 L experimental microcosms filled with water from a high-Arctic fjord (Svalbard), we examined changes in phototrophic and heterotrophic microbial abundances and processes [bacterial production (BP) and mortality], and viral activity (lytic and lysogenic) in relation to warming and elevated CO2. The summer microbial plankton community living at 1.4°C in situ temperature, was exposed to increased CO2 concentrations (135–2,318 μatm) in three controlled temperature treatments (1, 6, and 10°C) at the UNIS installations in Longyearbyen (Svalbard), in summer 2010. Results showed that chlorophyll a concentration decreased at increasing temperatures, while BP significantly increased with pCO2 at 6 and 10°C. Lytic viral production was not affected by changes in pCO2 and temperature, while lysogeny increased significantly at increasing levels of pCO2, especially at 10°C (R2 = 0.858, p = 0.02). Moreover, protistan grazing rates showed a positive interaction between pCO2 and temperature. The averaged percentage of bacteria grazed per day was higher (19.56 ± 2.77% d-1) than the averaged percentage of lysed bacteria by virus (7.18 ± 1.50% d-1) for all treatments. Furthermore, the relationship among microbial abundances and processes showed that BP was significantly related to phototrophic pico/nanoflagellate abundance in the 1°C and the 6°C treatments, and BP triggered viral activity, mainly lysogeny at 6 and 10°C, while bacterial mortality rates was significantly related to bacterial abundances at 6°C. Consequently, our experimental ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS King Abdullah University of Science and Technology: KAUST Repository Frontiers in Microbiology 10 |