龙须菜海藻场构建及其对水环境因子的影响

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Abstract

We investigated the structure of Gracilaria lemaneiformis bed and its effects on water environment from February to May, 2010.The results showed that the growth rate of G.lemaneiformis was the best in the condition of thick distance ranging from 0.3 to 0.4 m and seedling distance from 0.1 to 0.2 m.The structure of G.lemaneiformis affected the water quality.In the cultural area,the average concentrations of inorganic nitrogen(IN),inorganic phosphorus(IP),Chlorophyll-a(Chl-a),dissolved oxygen(DO) and average transparency were(133.40±15.18)μg·L^-1,(13.16±1.38)μg·L^-1,(1.86±0.23) mg·m^-3,(9.55±0.46) mg·L^-1 and(1.76±0.09) m,respectively. In the control area,they were(153.81±11.97)μg·L^-1,(15.55±1.05)μg·L^-1,(2.44±0.30) mg·m^-3 and(8.90±0.37) mg·L^-1 and(1.41±0.15) m,respectively.The concentrations of IN,IP,Chl-a were significantly lower in the culture area than those in the control area,but dissolved oxygen concentration and transparency were significantly higher in the culture area than those in the control area.Hence,the structure of G.lemaneiformis bed may improve the water quality by increasing the concentration of DO,restricting the growth of microalgae and reducing the concentration of IN and IP.

Key words： Gracilaria lemaneiformis algeabed dissolved oxygen Chlorophyll-a inorganic nitrogen inorganic phosphorus

Received: 25 December 2011

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	Articles by authors
	ZHOU Yan-yan
	LI Chun-hou
	CHENG Pi-mao
	LI Chun-xiao
	MA Qing-tao
	YANG Jing
	LI Qi
	LIU Wei-da

Cite this article:

ZHOU Yan-yan,LI Chun-hou,CHENG Pi-mao, et al. Structure of Gracilaria lemaneiformis bed and its effect on the factors of water environment[J]. , 2011, 30(6): 590-595.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I6/590

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