气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and diatom silica production in the Southern Ocean

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.914329
	Seawater carbonate chemistry and diatom silica production in the Southern Ocean
	Petrou; Katherina; Baker; Kirralee G; Nielsen; Daniel A; Hancock; Alyce M; Schulz; Kai Georg; Davidson; Andrew T
发布日期	2020-04-02
数据集类型	dataset
英文关键词	Antarctic ; Coast and continental shelf ; Containers and aquaria (20- 1000 L or &lt ; 1 m**2) ; Entire community ; Fragilariopsis curta ; Fragilariopsis cylindrus ; Laboratory experiment ; Other metabolic rates ; Pelagos ; Polar ; Primary production/Photosynthesis ; Proboscia truncata ; Pseudonitzschia turgiduloides ; Stellarima microtrias ; Thalassiosira antarctica
英文简介	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.
空间范围	Latitude: -68.583330 * Longitude: 77.966670
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215603
推荐引用方式 GB/T 7714	Petrou,Katherina,Baker,et al. Seawater carbonate chemistry and diatom silica production in the Southern Ocean.2020-04-02.https://doi.org/10.1594/PANGAEA.914329.