Structure of Gracilaria lemaneiformis bed and its effect on the factors of water environment
ZHOU Yan-yan1,2, LI Chun-hou1, CHENG Pi-mao1, LI Chun-xiao3, MA Qing-tao3, YANG Jing1,2, LI Qi1,2, LIU Wei-da1,2
1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, The Key Laboratory of South China Sea Fishery Resources Exploitation, Ministry of Agriculture, Guangzhou 510300, China; 2. Shanghai Ocean University, Shanghai 201306, China; 3. Shantou Sea Fisheries Research Institute, Shantou 515000, China
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.
周岩岩1,2, 李纯厚1*, 陈丕茂1, 李春晓3, 马庆涛3, 杨进1,2, 李琦1,2, 刘维达1,2. 龙须菜海藻场构建及其对水环境因子的影响[J]. , 2011, 30(6): 590-595.
ZHOU Yan-yan1,2, LI Chun-hou1, CHENG Pi-mao1, LI Chun-xiao3, MA Qing-tao3, YANG Jing1,2, LI Qi1,2, LIU Wei-da1,2. Structure of Gracilaria lemaneiformis bed and its effect on the factors of water environment. , 2011, 30(6): 590-595.
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