黄海北部真核微藻粒级结构及环境关联

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Abstract The size fractions of eukaryotic microalgae in northern Yellow Sea were studied by high-throughput sequencing and molecular identification classification technology in 2019. The results showed that the size fractions of eukaryotic microalgae were dominated by medium and small in spring, small and large in summer, and large in autumn. The proportions of small-sized, medium-sized and large-sized eukaryotic microalgae were about 39:51:11, 40:24:36, and 26:13:62 in spring, summer and autumn respectively. Micromonas pusilla and Ostreococcus tauri were the dominant species of small-sized eukaryotic microalgae, Karlodinium veneficum was dominant in medium-sized eukaryotic microalgae, and Guinardia delicatula, Alexandrium hiranoi, and Gonyaulax polygramma were dominant in large-sized of microalgae. In general, Karlodinium veneficum (medium-sized microalgae) were the dominant species in spring (21.3%), Alexandrium hiranoi (large-sized microalgae) in summer (23.6%) and Gonyaulax polygramma (large-sized microalgae) in autumn (56.6%). Toxic dinoflagellate was dominant in eukaryotic microalgae in northern Yellow Sea, which may cause high risk of shellfish poisoning toxins accumulation. Brown tide causative species Ostreococcus tauri and Aureococcus anophagefferens, small-sized microalgae, posed potential threat to shellfish aquaculture in northern Yellow Sea.

Key words： eukaryotic microalgae size fraction environmental factors northern Yellow Sea

Received: 20 July 2020

PACS:	X171.1
	Q89
	P735

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	Articles by authors
	SONG Lun
	BI Xiang-dong
	FU Jie
	SONG Guang-jun
	WU Jin-hao
	LIU Yin
	LIU Su-xuan

Cite this article:

SONG Lun,BI Xiang-dong,FU Jie等. Characteristics of eukaryotic microalgae and their environmental correlation in the northern Yellow Sea[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1336-1344.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I3/1336

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