Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity
13 pages, 5 figures, 3 tables, supplemental material https://www.frontiersin.org/articles/10.3389/fmicb.2019.00494/full#supplementary-material Ocean acidification and warming are two main consequences of climate change that can directly affect biological and ecosystem processes in marine habitats. T...
Published in: | Frontiers in Microbiology |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media
2019
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/181697 https://doi.org/10.3389/fmicb.2019.00494 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 |
id |
ftcsic:oai:digital.csic.es:10261/181697 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/181697 2024-02-11T10:00:42+01:00 Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity Vaqué, Dolors Lara, Elena Arrieta López de Uralde, Jesús M. Holding, Johnna M. Sà, Elisabet L. Hendriks, Iris E. Coello Camba, Alexandra Álvarez, Marta Agustí, Susana Wassmann, Paul F. Duarte, Carlos M. European Commission Ministerio de Ciencia e Innovación (España) 2019-03 http://hdl.handle.net/10261/181697 https://doi.org/10.3389/fmicb.2019.00494 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 unknown Frontiers Media #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/226248 Publisher's version https://doi.org/10.3389/fmicb.2019.00494 Sí doi:10.3389/fmicb.2019.00494 e-issn: 1664-302X Frontiers in Microbiology 10: 494 (2019) http://hdl.handle.net/10261/181697 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 30949141 open Microbial food-webs Temperatures Arctic Ocean Viral life cycle pCO2 artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.3389/fmicb.2019.0049410.13039/50110000483710.13039/501100000780 2024-01-16T10:39:10Z 13 pages, 5 figures, 3 tables, supplemental material https://www.frontiersin.org/articles/10.3389/fmicb.2019.00494/full#supplementary-material 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 ... Article in Journal/Newspaper Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS Digital.CSIC (Spanish National Research Council) Arctic Arctic Ocean Svalbard Longyearbyen Frontiers in Microbiology 10 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Microbial food-webs Temperatures Arctic Ocean Viral life cycle pCO2 |
spellingShingle |
Microbial food-webs Temperatures Arctic Ocean Viral life cycle pCO2 Vaqué, Dolors Lara, Elena Arrieta López de Uralde, Jesús M. Holding, Johnna M. Sà, Elisabet L. Hendriks, Iris E. Coello Camba, Alexandra Álvarez, Marta Agustí, Susana Wassmann, Paul F. Duarte, Carlos M. Warming and CO2 Enhance Arctic Heterotrophic Microbial Activity |
topic_facet |
Microbial food-webs Temperatures Arctic Ocean Viral life cycle pCO2 |
description |
13 pages, 5 figures, 3 tables, supplemental material https://www.frontiersin.org/articles/10.3389/fmicb.2019.00494/full#supplementary-material 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 ... |
author2 |
European Commission Ministerio de Ciencia e Innovación (España) |
format |
Article in Journal/Newspaper |
author |
Vaqué, Dolors Lara, Elena Arrieta López de Uralde, Jesús M. Holding, Johnna M. Sà, Elisabet L. Hendriks, Iris E. Coello Camba, Alexandra Álvarez, Marta Agustí, Susana Wassmann, Paul F. Duarte, Carlos M. |
author_facet |
Vaqué, Dolors Lara, Elena Arrieta López de Uralde, Jesús M. Holding, Johnna M. Sà, Elisabet L. Hendriks, Iris E. Coello Camba, Alexandra Álvarez, Marta Agustí, 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 |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/181697 https://doi.org/10.3389/fmicb.2019.00494 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 |
geographic |
Arctic Arctic Ocean Svalbard Longyearbyen |
geographic_facet |
Arctic Arctic Ocean Svalbard Longyearbyen |
genre |
Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS |
genre_facet |
Arctic Arctic Ocean Climate change Longyearbyen Ocean acidification Svalbard UNIS |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/226248 Publisher's version https://doi.org/10.3389/fmicb.2019.00494 Sí doi:10.3389/fmicb.2019.00494 e-issn: 1664-302X Frontiers in Microbiology 10: 494 (2019) http://hdl.handle.net/10261/181697 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 30949141 |
op_rights |
open |
op_doi |
https://doi.org/10.3389/fmicb.2019.0049410.13039/50110000483710.13039/501100000780 |
container_title |
Frontiers in Microbiology |
container_volume |
10 |
_version_ |
1790596416488341504 |