Effect of dissolved organic nitrogen on the bloom of Proro-centrum donghaiense and Karenia spp.in the East China Sea coastal waters

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Understanding the mechanism of harmful algal bloom formation is vital for effectively preventing algal bloom outbreaks in coastal environments.Karenia spp.blooms in the East China Sea show a significant correlation with nutrient regimes.However,the impact of key components of nutrients,especially dissolved organic nitrogen(DON),on the blooms of Karenia spp.is not clear.Quantitative research is still lacking.In this study,the cruise observations,field mesocosm-flask culture experiments,and a multinitrogen-tri-phytoplankton-detritus model(NTPD)are combined to reveal the quantitative influence of nutrient regimes on the shift of Prorocentrum donghaiense and Karenia spp.in the East China Sea.It has a synchronism rhythm of diatom-P.donghaiense-Karenia spp.-diatom loop in the field culture experiment,which is consistent with the results of the cruise observation.The results showed that the processes of terrigenous DON(TeDON)and dissolved inorganic nitrogen(DIN:NO3--N,NH4+-N)absorption promoted P.donghaiense to become the dominant algae in the community;whereas the processes of DON from P.donghaiense absorption promoted Karenia spp.to become the dominant algae in ambient DIN exhaustion.In addition,the three-dimensional fluorescence components of humus C,tyrosine and fulvic acid can indicate the processes of growth and extinction of P.donghaiense and Karenia spp.,respectively.This study infers that P.donghaiense and Karenia spp.regime shift mechanism associated with the nutrient regime in coastal waters,which provides a scientific basis for the environmental management of coastal ecosystem health.

外文关键词：

Karenia spp.Prorocentrum donghaiensenutrientsmultinitrogen-tri-phytoplankton-detritus modelthree-dimensional fluorescence

作者：

Xiaoru Cui、Guangming Zhen、Jing Zhao、Keqiang Li、Xiulin Wang

展开 >

作者单位：

Key Laboratory of Marine Chemistry Theory and Technology/Frontiers Science Center for Deep Ocean Multispheres and Earth System of Ministry of Education,Ocean University of China,Qingdao 266100,China

College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China

College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China

基金：

National Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesNational Key Research & Development Program of China

项目编号：

421304032023620032017YFC1404300

出版年：

2024

DOI：

10.1007/s13131-023-2308-9

海洋学报(英文版)

中国海洋学会

海洋学报(英文版)

CSTPCD

影响因子：0.323

ISSN：0253-505X

年,卷(期)：2024.43(6)