Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre
Ocean acidification (OA), a consequence of increased global carbon dioxide (CO2) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. However, the direct impact of OA on hete...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Online Access: | https://escholarship.org/uc/item/2jc169cz https://escholarship.org/content/qt2jc169cz/qt2jc169cz.pdf https://doi.org/10.1029/2018jg004707 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt2jc169cz 2024-09-15T18:27:57+00:00 Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre Xia, Xiaomin Wang, Yu Yang, Yunlan Luo, Tingwei Van Nostrand, Joy D Zhou, Jizhong Jiao, Nianzhi Zhang, Rui 1001 - 1017 2019-04-01 application/pdf https://escholarship.org/uc/item/2jc169cz https://escholarship.org/content/qt2jc169cz/qt2jc169cz.pdf https://doi.org/10.1029/2018jg004707 unknown eScholarship, University of California qt2jc169cz https://escholarship.org/uc/item/2jc169cz https://escholarship.org/content/qt2jc169cz/qt2jc169cz.pdf doi:10.1029/2018jg004707 public Journal of Geophysical Research Biogeosciences, vol 124, iss 4 Life Below Water Geophysics article 2019 ftcdlib https://doi.org/10.1029/2018jg004707 2024-06-28T06:28:19Z Ocean acidification (OA), a consequence of increased global carbon dioxide (CO2) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. However, the direct impact of OA on heterotrophic bacterioplankton is often masked by the significant response of phytoplankton due to the close coupling of heterotrophic bacterioplankton and autotrophs. Here we investigated the responses of a heterotrophic bacterioplankton assemblage to high pCO2 (790-ppm) treatment in warm tropical western Pacific waters by conducting a microcosm experiment in dark for 12days. Heterotrophic bacterioplankton abundance and production were enhanced by OA over the first 6days of incubation, while the diversity and species richness were negatively affected. Bacterioplankton community composition in the high pCO2 treatment changed faster than that in the control. The molecular ecological network analysis showed that the elevated CO2 changed the overall connections among the bacterial community and resulted in a simple network under high CO2 condition. Species-specific responses to OA were observed and could be attributed to the different life strategies and to the ability of a given species to adapt to environmental conditions. In addition, high-throughput functional gene array analysis revealed that genes related to carbon and nitrogen cycling were positively affected by acidification. Together, our findings suggest that OA has direct effects on heterotrophic bacterioplankton in a low-latitude warm ocean and may therefore affect global biogeochemical cycles. Article in Journal/Newspaper Ocean acidification University of California: eScholarship Journal of Geophysical Research: Biogeosciences 124 4 1001 1017 |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Life Below Water Geophysics |
spellingShingle |
Life Below Water Geophysics Xia, Xiaomin Wang, Yu Yang, Yunlan Luo, Tingwei Van Nostrand, Joy D Zhou, Jizhong Jiao, Nianzhi Zhang, Rui Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
topic_facet |
Life Below Water Geophysics |
description |
Ocean acidification (OA), a consequence of increased global carbon dioxide (CO2) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. However, the direct impact of OA on heterotrophic bacterioplankton is often masked by the significant response of phytoplankton due to the close coupling of heterotrophic bacterioplankton and autotrophs. Here we investigated the responses of a heterotrophic bacterioplankton assemblage to high pCO2 (790-ppm) treatment in warm tropical western Pacific waters by conducting a microcosm experiment in dark for 12days. Heterotrophic bacterioplankton abundance and production were enhanced by OA over the first 6days of incubation, while the diversity and species richness were negatively affected. Bacterioplankton community composition in the high pCO2 treatment changed faster than that in the control. The molecular ecological network analysis showed that the elevated CO2 changed the overall connections among the bacterial community and resulted in a simple network under high CO2 condition. Species-specific responses to OA were observed and could be attributed to the different life strategies and to the ability of a given species to adapt to environmental conditions. In addition, high-throughput functional gene array analysis revealed that genes related to carbon and nitrogen cycling were positively affected by acidification. Together, our findings suggest that OA has direct effects on heterotrophic bacterioplankton in a low-latitude warm ocean and may therefore affect global biogeochemical cycles. |
format |
Article in Journal/Newspaper |
author |
Xia, Xiaomin Wang, Yu Yang, Yunlan Luo, Tingwei Van Nostrand, Joy D Zhou, Jizhong Jiao, Nianzhi Zhang, Rui |
author_facet |
Xia, Xiaomin Wang, Yu Yang, Yunlan Luo, Tingwei Van Nostrand, Joy D Zhou, Jizhong Jiao, Nianzhi Zhang, Rui |
author_sort |
Xia, Xiaomin |
title |
Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
title_short |
Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
title_full |
Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
title_fullStr |
Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
title_full_unstemmed |
Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre |
title_sort |
ocean acidification regulates the activity, community structure, and functional potential of heterotrophic bacterioplankton in an oligotrophic gyre |
publisher |
eScholarship, University of California |
publishDate |
2019 |
url |
https://escholarship.org/uc/item/2jc169cz https://escholarship.org/content/qt2jc169cz/qt2jc169cz.pdf https://doi.org/10.1029/2018jg004707 |
op_coverage |
1001 - 1017 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Journal of Geophysical Research Biogeosciences, vol 124, iss 4 |
op_relation |
qt2jc169cz https://escholarship.org/uc/item/2jc169cz https://escholarship.org/content/qt2jc169cz/qt2jc169cz.pdf doi:10.1029/2018jg004707 |
op_rights |
public |
op_doi |
https://doi.org/10.1029/2018jg004707 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
124 |
container_issue |
4 |
container_start_page |
1001 |
op_container_end_page |
1017 |
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1810469245117530112 |