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DOI:	10.1371/journal.pone.0173145
论文题名:	Elevated pCO2 enhances bacterioplankton removal of organic carbon
作者:	Anna K. James; Uta Passow; Mark A. Brzezinski; Rachel J. Parsons; Jennifer N. Trapani; Craig A. Carlson
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2017
发表日期:	2017-3-3
卷:	12, 期:3
语种:	英语
英文关键词:	Bacterioplankton ; Sea water ; Sargasso Sea ; Oceans ; Phytoplankton ; Carbon dioxide ; Experimental design ; Particulates
英文摘要:	Factors that affect the removal of organic carbon by heterotrophic bacterioplankton can impact the rate and magnitude of organic carbon loss in the ocean through the conversion of a portion of consumed organic carbon to CO2. Through enhanced rates of consumption, surface bacterioplankton communities can also reduce the amount of dissolved organic carbon (DOC) available for export from the surface ocean. The present study investigated the direct effects of elevated pCO2 on bacterioplankton removal of several forms of DOC ranging from glucose to complex phytoplankton exudate and lysate, and naturally occurring DOC. Elevated pCO2 (1000–1500 ppm) enhanced both the rate and magnitude of organic carbon removal by bacterioplankton communities compared to low (pre-industrial and ambient) pCO2 (250 –~400 ppm). The increased removal was largely due to enhanced respiration, rather than enhanced production of bacterioplankton biomass. The results suggest that elevated pCO2 can increase DOC consumption and decrease bacterioplankton growth efficiency, ultimately decreasing the amount of DOC available for vertical export and increasing the production of CO2 in the surface ocean.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0173145&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/25680
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Marine Science Institute, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California, United States of America;Marine Science Institute, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California, United States of America;Marine Science Institute, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California, United States of America;Bermuda Institute of Ocean Science (BIOS), St. George’s, Bermuda;Bermuda Institute of Ocean Science (BIOS), St. George’s, Bermuda;Marine Science Institute, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California, United States of America

Recommended Citation:

Anna K. James,Uta Passow,Mark A. Brzezinski,et al. Elevated pCO2 enhances bacterioplankton removal of organic carbon[J]. PLOS ONE,2017-01-01,12(3)

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