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	Recovery and fate of three species of marine dinoflagellates after yellow clay flocculation
	Sun, XX; Choi, JK
刊名	HYDROBIOLOGIA
	2004-05-01
卷号	519期号:1-3页码:153-165
关键词	Cyst Marine Dinoflagellates Recovery Yellow Clay
ISSN号	0018-8158
文献子类	Article
英文摘要	The recovery and fate of three species of dinoflagellates, Alexandrium tamarense, Cochlodinium polykrikoides and Scrippsiella trochoidea, after having been sedimented by yellow clay, were investigated in the laboratory. The effect of burying period in yellow clay pellet and mixing on the recovery of settled algal cells were studied. The morphological changes of algal cells in yellow clay pellet were also tracked. Results showed that there was almost no recovery for A. tamarense and C. polykrikoides, and the cells decomposed after 2-3 days after visible changes in morphology and chloroplasts. There was some recovery for S. trochoidea. Moreover, S. trochoidea cysts were formed in clay pellet during the period of about 14 days, with the highest abundance of 87 000 cysts g(-1) clay and the incidence of cyst formation of 6.5%, which was considered as a potential threat for the further occurrence of algal blooms. S. trochoidea cysts were isolated from yellow clay and incubated to test their viability, and a germination ratio of more than 30% was obtained after incubation for 1 month. These results showed the species specificity of the mitigation effect of yellow clay. It is suggested that cautions be taken for some harmful species and thorough risk assessments be conducted before using this mitigation strategy in the field.; The recovery and fate of three species of dinoflagellates, Alexandrium tamarense, Cochlodinium polykrikoides and Scrippsiella trochoidea, after having been sedimented by yellow clay, were investigated in the laboratory. The effect of burying period in yellow clay pellet and mixing on the recovery of settled algal cells were studied. The morphological changes of algal cells in yellow clay pellet were also tracked. Results showed that there was almost no recovery for A. tamarense and C. polykrikoides, and the cells decomposed after 2-3 days after visible changes in morphology and chloroplasts. There was some recovery for S. trochoidea. Moreover, S. trochoidea cysts were formed in clay pellet during the period of about 14 days, with the highest abundance of 87 000 cysts g(-1) clay and the incidence of cyst formation of 6.5%, which was considered as a potential threat for the further occurrence of algal blooms. S. trochoidea cysts were isolated from yellow clay and incubated to test their viability, and a germination ratio of more than 30% was obtained after incubation for 1 month. These results showed the species specificity of the mitigation effect of yellow clay. It is suggested that cautions be taken for some harmful species and thorough risk assessments be conducted before using this mitigation strategy in the field.
学科主题	Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000221203100015
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2745]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Inha Univ, Reg Res Ctr Coastal Environm Yellow Sea, Inchon 402751, South Korea 2.Inha Univ, Dept Oceanog, Inchon 402751, South Korea 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Sun, XX,Choi, JK. Recovery and fate of three species of marine dinoflagellates after yellow clay flocculation[J]. HYDROBIOLOGIA,2004,519(1-3):153-165.
APA	Sun, XX,&Choi, JK.(2004).Recovery and fate of three species of marine dinoflagellates after yellow clay flocculation.HYDROBIOLOGIA,519(1-3),153-165.
MLA	Sun, XX,et al."Recovery and fate of three species of marine dinoflagellates after yellow clay flocculation".HYDROBIOLOGIA 519.1-3(2004):153-165.

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