Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre
Ocean acidification (OA), a result of increased global carbon dioxide (CO 2 ) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. Yet, the direct impact of OA on heterotroph...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Online Access: | http://www.osti.gov/servlets/purl/1580827 https://www.osti.gov/biblio/1580827 https://doi.org/10.1029/2018jg004707 |
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ftosti:oai:osti.gov:1580827 2023-07-30T04:06:03+02:00 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 2022-05-27 application/pdf http://www.osti.gov/servlets/purl/1580827 https://www.osti.gov/biblio/1580827 https://doi.org/10.1029/2018jg004707 unknown http://www.osti.gov/servlets/purl/1580827 https://www.osti.gov/biblio/1580827 https://doi.org/10.1029/2018jg004707 doi:10.1029/2018jg004707 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.1029/2018jg004707 2023-07-11T09:38:40Z Ocean acidification (OA), a result of increased global carbon dioxide (CO 2 ) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. Yet, 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 p CO 2 (790-ppm) treatment in warm tropical western Pacific waters by conducting a microcosm experiment in dark for 12 days. Heterotrophic bacterioplankton abundance and production were enhanced by OA over the first 6 days of incubation, while the diversity and species richness were negatively affected. Bacterioplankton community composition in the high p CO 2 treatment changed faster than that in the control. The molecular ecological network analysis showed that the elevated CO 2 changed the overall connections among the bacterial community and resulted in a simple network under high CO 2 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. Other/Unknown Material Ocean acidification SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Pacific Journal of Geophysical Research: Biogeosciences 124 4 1001 1017 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES 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 |
54 ENVIRONMENTAL SCIENCES |
description |
Ocean acidification (OA), a result of increased global carbon dioxide (CO 2 ) emissions, is considered a major threat to marine ecosystems. Its effects on bacterioplankton activity, diversity, and community composition have received considerable attention. Yet, 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 p CO 2 (790-ppm) treatment in warm tropical western Pacific waters by conducting a microcosm experiment in dark for 12 days. Heterotrophic bacterioplankton abundance and production were enhanced by OA over the first 6 days of incubation, while the diversity and species richness were negatively affected. Bacterioplankton community composition in the high p CO 2 treatment changed faster than that in the control. The molecular ecological network analysis showed that the elevated CO 2 changed the overall connections among the bacterial community and resulted in a simple network under high CO 2 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. |
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 |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1580827 https://www.osti.gov/biblio/1580827 https://doi.org/10.1029/2018jg004707 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.osti.gov/servlets/purl/1580827 https://www.osti.gov/biblio/1580827 https://doi.org/10.1029/2018jg004707 doi:10.1029/2018jg004707 |
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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1772818414670184448 |