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Impacts of Changjiang River Discharge and Kuroshio Intrusion on the Diatom and Dinoflagellate Blooms in the East China Sea
Zhou, Zheng-Xi1,2,3; Yu, Ren-Cheng1,2,3,4; Sun, Chaojiao5; Feng, Ming5; Zhou, Ming-Jiang1
2019-07-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume124Issue:7Pages:5244-5257
Corresponding AuthorYu, Ren-Cheng(rcyu@qdio.ac.cn)
AbstractThe coastal area adjacent to the Changjiang River estuary is a high-risk region for harmful algal blooms. Both Changjiang River discharge and Kuroshio intrusion influence the hydrological conditions and nutrient composition in this area which could affect the onset of diatom and dinoflagellate blooms. However, current understandings on their roles in regulating different microalgal blooms are limited. In this study, changes in stratification, water masses, and the ratio of phosphorus to nitrogen were examined during the diatom and dinoflagellate blooms in 2005 using ship cruise data. The observations showed that both the diatom and dinoflagellate blooms occurred in the continental coastal water. By enhancing the pycnocline and phosphorus stress, the Changjiang diluted water plays an important role in affecting the diatom bloom. The dinoflagellate bloom is partly supported by the supply of phosphate transported by Kuroshio intrusion and upwelling. The results of this study will help elucidate the mechanisms of large-scale harmful algal blooms in the coastal area adjacent to the Changjiang River estuary. Plain Language Summary The coastal area adjacent to the Changjiang River estuary is a high-risk region for harmful algal blooms. Intensive blooms of diatoms and dinoflagellates have been observed every year from spring to early summer. In 2005, field cruises were conducted in the East China Sea to investigate the succession process from the diatom to the dinoflagellate bloom. Based on the field investigation data, the characteristics and variation of stratification, water masses, nutrient composition, and microalgal blooms were analyzed to find out how Changjiang River discharge and Kuroshio intrusion affected the dynamics of different microalgal blooms. Four water masses were identified during the blooms, and both types of microalgal blooms were found to occur in the continental coastal water. The Changjiang River discharge was found to play an important role during the diatom bloom by enhancing the pycnocline and phosphorus stress, while the Kuroshio intrusion supplied phosphate for the development and maintenance of the large-scale dinoflagellate bloom. The results could help elucidate the mechanisms of harmful algal blooms in the coastal area adjacent to the Changjiang River estuary.
Keyworddiatom bloom dinoflagellate bloom East China Sea Kuroshio intrusion Changjiang River discharge
DOI10.1029/2019JC015158
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of the Ministry of Science and Technology of China (MoST)[2017YFC1404304] ; Program of the Qingdao National Laboratory for Marine Science and Technology (QNLM)[2016ASKJ02] ; CAS-CSIRO Project Fund (CAS)[GJHZ1888] ; China Postdoctoral Science Foundation[2017M622291] ; Shandong province[U1606404] ; National Natural Science Foundation of China (NSFC)[U1606404] ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDA19060203]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000482059700049
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/162391
Collection海洋生态与环境科学重点实验室
Corresponding AuthorYu, Ren-Cheng
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China
3.Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.CSIRO Oceans & Atmosphere, Crawley, WA, Australia
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou, Zheng-Xi,Yu, Ren-Cheng,Sun, Chaojiao,et al. Impacts of Changjiang River Discharge and Kuroshio Intrusion on the Diatom and Dinoflagellate Blooms in the East China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(7):5244-5257.
APA Zhou, Zheng-Xi,Yu, Ren-Cheng,Sun, Chaojiao,Feng, Ming,&Zhou, Ming-Jiang.(2019).Impacts of Changjiang River Discharge and Kuroshio Intrusion on the Diatom and Dinoflagellate Blooms in the East China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(7),5244-5257.
MLA Zhou, Zheng-Xi,et al."Impacts of Changjiang River Discharge and Kuroshio Intrusion on the Diatom and Dinoflagellate Blooms in the East China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.7(2019):5244-5257.
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