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Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre
Xia, Xiaomin; Wang, Yu1,2; Yang, Yunlan1,2; Luo, Tingwei1,2; Van Nostrand, Joy D.; Zhou, Jizhong3,4,5,6; Jiao, Nianzhi1,2; Zhang, Rui1,2
2019
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN2169-8953
Volume124Issue:4Pages:1001
AbstractOcean 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 pCO(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 pCO(2) 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.
DepartmentLMB
DOI10.1029/2018JG004707
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17864
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Beijing, Peoples R China
2.Xiamen Univ, State Key Lab Marine Environm Sci, Beijing, Peoples R China
3.Xiamen Univ, Inst Marine Microbes & Ecospheres, Beijing, Peoples R China
4.Univ Oklahoma, Dept Microbiol & Plant Biol, Inst Environm Genom, Norman, OK 73019 USA
5.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA
6.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China
7.Lawrence Berkeley Natl Lab, Earth & Environm Sci, Berkeley, CA USA
Recommended Citation
GB/T 7714
Xia, Xiaomin,Wang, Yu,Yang, Yunlan,et al. Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(4):1001, 1017.
APA Xia, Xiaomin.,Wang, Yu.,Yang, Yunlan.,Luo, Tingwei.,Van Nostrand, Joy D..,...&Zhang, Rui.(2019).Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(4),1001.
MLA Xia, Xiaomin,et al."Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.4(2019):1001.
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