Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre

doi:10.1029/2018JG004707

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	Ocean Acidification Regulates the Activity, Community Structure, and Functional Potential of Heterotrophic Bacterioplankton in an Oligotrophic Gyre
	Jiao, Nianzhi 1,2; Xia, Xiaomin ; Zhang, Rui 1,2; Wang, Yu 1,2; Zhou, Jizhong 3,4,5,6; Van Nostrand, Joy D.; Luo, Tingwei 1,2; Yang, Yunlan 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2019
卷号	124 期号:4 页码:1001
ISSN号	2169-8953
DOI	10.1029/2018JG004707
英文摘要	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 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.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17864]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
作者单位	1.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
推荐引用方式 GB/T 7714	Jiao, Nianzhi,Xia, Xiaomin,Zhang, Rui,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	Jiao, Nianzhi.,Xia, Xiaomin.,Zhang, Rui.,Wang, Yu.,Zhou, Jizhong.,...&Yang, Yunlan.(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	Jiao, Nianzhi,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.