气候变化领域集成服务门户(CCPortal): Hydrogen isotope fractions of long-chain alkenones produced by Emiliania huxleyi during experiments

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DOI	https://doi.org/10.1594/PANGAEA.883192
	Hydrogen isotope fractions of long-chain alkenones produced by Emiliania huxleyi during experiments
	Weiss; Gabriella M; Pfannerstill; Eva Y; Schouten; Stefan; Sinninghe Damsté; Jaap S; van der Meer; Marcel T J
发布日期	2017-11-16
数据集类型	dataset
英文简介	Over the last decade, hydrogen isotopes of long-chain alkenones have been shown to be a promising proxy for reconstructing paleo sea surface salinity due to a strong hydrogen isotope fractionation response to salinity across different environmental conditions. However, to date, the decoupling of the effects of alkalinity and salinity, parameters that co-vary in the surface ocean, on hydrogen isotope fractionation of alkenones has not been assessed. Furthermore, as the alkenone-producing haptophyte, Emiliania huxleyi, is known to grow in large blooms under high light intensities, the effect of salinity on hydrogen isotope fractionation under these high irradiances is important to constrain before using dDC37 to reconstruct paleosalinity. Batch cultures of the marine haptophyte E. huxleyi strain CCMP 1516 were grown to investigate the hydrogen isotope fractionation response to salinity at high light intensity and independently assess the effects of salinity and alkalinity under low light conditions. Our results suggest that alkalinity does not significantly influence hydrogen isotope fractionation of alkenones, but salinity does have a strong effect. Additionally, no significant difference was observed between the fractionation responses to salinity recorded in alkenones grown under both high and low light conditions. Comparison with previous studies suggests that the fractionation response to salinity in culture is similar under different environmental conditions, strengthening the use of hydrogen isotope fractionation as a paleosalinity proxy.
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/216393
推荐引用方式 GB/T 7714	Weiss,Gabriella M,Pfannerstill,et al. Hydrogen isotope fractions of long-chain alkenones produced by Emiliania huxleyi during experiments.2017-11-16.https://doi.org/10.1594/PANGAEA.883192.