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

doi:10.1007/s13131-020-1668-z

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 海洋环流观测与数值模拟研究室

	Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015
	Liu Sumin 1; Hong Bo 4; Wang Guifen 2; Wang Weiqiang 1; Xie Qiang 3; Ni Zekai 3; Yu Liu 3; Jiang Huichang 3; Long Tong 3; Xu Hongzhou 3
刊名	Acta Oceanologica Sinica
	2020
卷号	39 期号:11 页码:103-114
关键词	eastern Hainan upwelling cold tongue dissolved oxygen phytoplankton community
ISSN号	0253-505X
DOI	10.1007/s13131-020-1668-z
英文摘要	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, aNO_xia)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.
WOS关键词	SOUTH CHINA SEA ; NORTHWEST CONTINENTAL-SHELF ; UPWELLING INTENSITY ; LOCAL WIND ; PIGMENTS ; ABUNDANCE ; ECOSYSTEM ; SYSTEM ; GROWTH ; ISLAND
WOS研究方向	Oceanography
语种	英语
CSCD记录号	CSCD:6870955
出版者	SPRINGER
WOS记录号	WOS:000605630000010
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/8341]
专题	深海科学研究部_海洋环流观测与数值模拟研究室
作者单位	1.中国科学院南海海洋研究所 2.河海大学 3.中国科学院深海科学与工程研究所 4.华南理工大学
推荐引用方式 GB/T 7714	Liu Sumin,Hong Bo,Wang Guifen,et al. Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015[J]. Acta Oceanologica Sinica,2020,39(11):103-114.
APA	Liu Sumin.,Hong Bo.,Wang Guifen.,Wang Weiqiang.,Xie Qiang.,...&Xu Hongzhou.(2020).Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015.Acta Oceanologica Sinica,39(11),103-114.
MLA	Liu Sumin,et al."Physical structure and phytoplankton community off the eastern Hainan coast during summer 2015".Acta Oceanologica Sinica 39.11(2020):103-114.