气候变化领域集成服务门户(CCPortal): Solar UV irradiances modulate effects of ocean acidification on the Coccolithophorid Emiliania huxleyi

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.843600
	Solar UV irradiances modulate effects of ocean acidification on the Coccolithophorid Emiliania huxleyi
	Xu; Kai; Gao; Kunshan
发布日期	2015-03-05
数据集类型	dataset
英文关键词	Bottles or small containers/Aquaria ( 20 L) ; Calcification/Dissolution ; Chromista ; Emiliania huxleyi ; Growth/Morphology ; Haptophyta ; Laboratory experiment ; Laboratory strains ; Light ; Pelagos ; Phytoplankton ; Primary production/Photosynthesis ; Single species
英文简介	Emiliania huxleyi, the most abundant coccolithophorid in the oceans, is naturally exposed to solar UV radiation (UVR, 280-400 nm) in addition to photosynthetically active radiation (PAR). We investigated the physiological responses of E. huxleyi to the present day and elevated CO2 (390 vs 1000 µatm; with pH(NBS) 8.20 vs 7.86) under indoor constant PAR and fluctuating solar radiation with or without UVR. Enrichment of CO2 stimulated the production rate of particulate organic carbon (POC) under constant PAR, but led to unchanged POC production under incident fluctuating solar radiation. The production rates of particulate inorganic carbon (PIC) as well as PIC/POC ratios were reduced under the elevated CO2, ocean acidification (OA) condition, regardless of PAR levels, and the presence of UVR. However, moderate levels of UVR increased PIC production rates and PIC/POC ratios. OA treatment interacted with UVR to influence the alga's physiological performance, leading to reduced specific growth rate in the presence of UVA (315-400 nm) and decreased quantum yield, along with enhanced nonphotochemical quenching, with addition of UVB (280-315 nm). The results clearly indicate that UV radiation needs to be invoked as a key stressor when considering the impacts of ocean acidification on E. huxleyi.
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/217172
推荐引用方式 GB/T 7714	Xu,Kai,Gao,et al. Solar UV irradiances modulate effects of ocean acidification on the Coccolithophorid Emiliania huxleyi.2015-03-05.https://doi.org/10.1594/PANGAEA.843600.