气候变化领域集成服务门户(CCPortal): Photosynthesis-Irradiance Response in the Eddy Dipole in the Western South China Sea

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DOI	10.1029/2020JC016986
	Photosynthesis-Irradiance Response in the Eddy Dipole in the Western South China Sea
	Liao J.; Xu J.; Li R.; Shi Z.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	Photosynthesis-irradiance (P-E) parameters, such as the maximum photosynthetic rate ((Formula presented.)) and maximum light utilization coefficient (α), are key parameters of primary production (PP) models. It is necessary to understand the response of P-E parameters to mesoscale eddies to accurately model PP in eddies. The P-E parameters and phytoplankton communities were examined at the surface and the deep chlorophyll maximum (DCM) of the eddy dipole in the western South China Sea. The surface (Formula presented.) differed significantly between the edge and center of both eddies. The (Formula presented.) at the center was significantly higher than that at the edge of the cyclonic eddy (CE), while the opposite trend was observed in the anticyclonic eddy (AE). Phytoplankton community composition modulated variability in P-E parameters in the eddy dipole. Over 75% of the variance in surface P-E parameters could be explained by the pico-phytoplankton communities and environmental factors (nutrients and temperature). In contrast, the ratio of Synechococcus abundance to chlorophyll a concentration was primarily responsible for the variability in P-E parameters at the DCM. These relationships allowed us to model (Formula presented.) and α at all stations and depths sampled. The integrated primary production (IPP) determined from these modeled P-E parameters was coincident with the IPP determined from on-deck incubations. The modeled (Formula presented.) -α-based IPP exhibited a higher IPP at the CE center than that at the AE center. Our findings can improve the parameterization of the physical-biogeochemical coupling models of eddies. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	anticyclonic eddy; cyclonic eddy; maximum photosynthetic rate; phytoplankton community composition
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186322
作者单位	State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; College of Marine Science, University of Chinese Academy of Sciences, Beijing, China; Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
推荐引用方式 GB/T 7714	Liao J.,Xu J.,Li R.,et al. Photosynthesis-Irradiance Response in the Eddy Dipole in the Western South China Sea[J],2021,126(5).
APA	Liao J.,Xu J.,Li R.,&Shi Z..(2021).Photosynthesis-Irradiance Response in the Eddy Dipole in the Western South China Sea.Journal of Geophysical Research: Oceans,126(5).
MLA	Liao J.,et al."Photosynthesis-Irradiance Response in the Eddy Dipole in the Western South China Sea".Journal of Geophysical Research: Oceans 126.5(2021).