Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015

IOCAS-IR

	Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015
	Sumin Liu ; Bo Hong ; Guifen Wang ; Weiqiang Wang ; Qiang Xie ; Zekai Ni ; Liu Yu ; Huichang Jiang ; Tong Long ; Hongzhou Xu
发表期刊	Acta Oceanologica Sinica
ISSN	0253-505X
	2020-11-15
出版年	2020
卷号	v.39 期号:11 页码:106-117
文献类型	CNKI期刊论文
摘要	Based on satellite remote sensing dataset and survey data during upwelling season of 2015, the spatial structures of phytoplankton biomass and community for the first time in the eastern Hainan upwelling(EHU) and its adjacent area, the eastern Leizhou Peninsula upwelling(ELPU) were illustrated. It is found that a significant cold tongue with high salinity and low temperature along the eastern Hainan coast driven by upwelling-favorable summer monsoon. The ELPU was relative weaker than the EHU because of its wide and gentle continental slope.Due to mixing by tides and waves, DO concentration with high value(>6.0 mg/L) were almost homogenous from surface to 30 m depth at the EHU. Beneath that, low DO water(<6.0 mg/L, anoxia) were pumped upward from bottom by the upwelling. The ELPU has worse DO condition compared with the EHU where bottom DO were lower than 3.5 mg/L owing to abundant DO consumption. The phytoplankton biomass reached maximal value about 1.5 mg/m~3 at 30 m depth layer rather than surface layer at the EHU indicating the impact limit of upwelling on phytoplankton growth and DO distribution. Nourished by rich nutrient input, the phytoplankton biomass at the ELPU were much higher than the EHU where the maximal value can reach about 4.0 mg/m~3. The phytoplankton biomass were reduced to about 0.2–0.3 mg/m~3 at the offshore areas of the EHU and ELPU which were close to the value at open sea. At the inshore of the EHU, the phytoplankton community was dominated by diatom which accounted for about 50% of phytoplankton biomass. And prokaryotes(about 40%), green algae(about 20%) and prochlorococcus(about 20%) became main species at the offshore of the EHU. At the ELPU,diatom accounted for about 80% of phytoplankton biomass followed by green algae, indicating a different ecosystem at this region compared with the EHU.
关键词	eastern Hainan upwelling cold tongue dissolved oxygen phytoplankton community
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A006;A010;
CNKI专题名称	生物学;海洋学;
分类号	P73;Q948.8
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	The National Key Research and Development Program of China under contract No. 2018YFC0309800 ; the National Natural Science Foundation of China under contract Nos 41666001 ; 41576006 ; 41976014 ; 41776045 ; the Chinese Academy of Sciences Frontier Basic Research Project under contract No. QYJC201910 ; the Sanya Governmental Academy-Locality S&T Cooperation Program under contract No. 2015YD28
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187965
专题	中国科学院海洋研究所
作者单位	1.StateKeyLaboratoryofTropicalOceanography,SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences 2.InstituteofDeep-seaScienceandEngineering,ChineseAcademyofSciences 3.GraduateSchool,UniversityofChineseAcademyofSciences 4.SouthChinaUniversityofTechnology 5.HohaiUniversity 6.CenterforOceanMega-Science,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	Sumin Liu,Bo Hong,Guifen Wang,et al. Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015. 2020.