气候变化领域集成服务门户(CCPortal): Acidification diminishes diatom silica production in the Southern Ocean

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DOI	10.1038/s41558-019-0557-y
	Acidification diminishes diatom silica production in the Southern Ocean
	Petrou K.; Baker K.G.; Nielsen D.A.; Hancock A.M.; Schulz K.G.; Davidson A.T.
发表日期	2019
ISSN	1758678X
卷号	9 期号:10
英文摘要	Diatoms, large bloom-forming marine microorganisms, build frustules out of silicate, which ballasts the cells and aids their export to the deep ocean. This unique physiology forges an important link between the marine silicon and carbon cycles. However, the effect of ocean acidification on the silicification of diatoms is unclear. Here we show that diatom silicification strongly diminishes with increased acidity in a natural Antarctic community. Analyses of single cells from within the community reveal that the effect of reduced pH on silicification differs among taxa, with several species having significantly reduced silica incorporation at CO2 levels equivalent to those projected for 2100. These findings suggest that, before the end of this century, ocean acidification may influence the carbon and silicon cycle by both altering the composition of the diatom assemblages and reducing cell ballasting, which will probably alter vertical flux of these elements to the deep ocean. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	algal bloom; carbon cycle; deep-sea benthos; ocean acidification; pH; physiology; silicification; silicon; Bacillariophyta
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124344
作者单位	School of Life Science, University of Technology Sydney, Ultimo, NSW, Australia; School of Biological Sciences, University of Essex, Colchester, United Kingdom; Institute for Marine and Antarctic Studies, University of Tasmania, Battery Point, TAS, Australia; Antarctic Gateway Partnership, Battery Point, TAS, Australia; Antarctic Climate & Ecosystems Cooperative Research Centre, Battery Point, TAS, Australia; Centre for Coastal Biogeochemistry, Southern Cross University, East Lismore, NSW, Australia; Australian Antarctic Division, Department of Environment and Energy, Kingston, TAS, Australia
推荐引用方式 GB/T 7714	Petrou K.,Baker K.G.,Nielsen D.A.,et al. Acidification diminishes diatom silica production in the Southern Ocean[J],2019,9(10).
APA	Petrou K.,Baker K.G.,Nielsen D.A.,Hancock A.M.,Schulz K.G.,&Davidson A.T..(2019).Acidification diminishes diatom silica production in the Southern Ocean.Nature Climate Change,9(10).
MLA	Petrou K.,et al."Acidification diminishes diatom silica production in the Southern Ocean".Nature Climate Change 9.10(2019).