2010, Volume 12, Issue 6
Strategic Study of CAE >> 2010, Volume 12, Issue 6
Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of Outer Dianchi Lake
1. Kunming Institute of Ecology of Dianchi Lake, Kunming 650228, China;
2. Laboratory for Conservation and Utilization of Bio-Resource & School of Life Sciences, Yunnan University, Kunming 650091, China
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Abstract
For several reasons, the north area of the Dianchi Lake is prolific of blue-green alga. In this paper, the dynamic biomass of alga was investigated. Both of the concentrations of N and P in original water and in filtered water were also be monitored. The aim of the study is to figure out the alga's influence on the concentrations of N and P in the water, and to analyze the relationship between them by using the method of ecological stoichiometry. It is disclosed that from April to November is the main stage of alga blooming. Especially, alga blooms seriously and is uncontrolled from May to September. By data analysis, we find that the concentrations of N and P vary conforming to the dynamic of the biomass of alga, and there is positive correlation-ship between them. The correlation coefficient between the concentrations of N in water and alga's biomass is 0.955, between the concentrations of P in water and alga's biomass is 0.952. By taken the method of stoichiometry analysis, we find both the N∶P ratios of alga and water are not constant, and both of them have no significant ecological stoichiometry of the N∶P ratio. We also made correlation-ship analysis between the N∶P ratio of water and biomass of alga. The correlation-ship between them is 0.308, which illustrats that the biomass of alga is not related to the N∶P ratio of water. Thus we can declare that there is only one most efficient way to control blue-green alga booming, to reduce the concentration of N and P in water of eutrophic lakes.
Keywords
the Dianchi Lake ; blue-green alga ; the N∶P ratio ; variation ; ecological stoichiometry
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References
[ 1 ] 杨一光,杨桂华.滇池自然地理概要[J].云南大学学报(自然科学版),1985,7(增刊)):1-8 link1
[ 2 ] 刘丽萍.滇池水华特征及成因分析[J].环境科学研究,1999,12(5):36-37 link1
[ 3 ] Sterner R W , Elser J J.Ecological Stoichiometry – The biology of elements from molecules to the biosphere [ M] .Princeton Uni- versity Press, Princeton.2002
[ 4 ] 王绍强,于贵瑞.生态系统碳氮磷元素的生态化学计量学特征[J].生态学报,2008,8,28(8):3937-3947 link1
[ 5 ] Sterner R W.Seasonal and spatial patterns in macro and micro nu- trient limitation in Joe Pool Lake [ J ] .Texas Limnol Oceanogr, 1994 ,39 : 535 -550 link1
[ 6 ] Sterner R W, Smutka T M, Mckay R M L, et al.Phosphorus and trace metal limitation of algae and bacteria in Lake Superior.Lim- nol[ J] .Oceanogr,2004 ,49 : 495 -507 link1
[ 7 ] Sterner R W, Andersen T, ELSER J J, et al.Scale -dependent carbon:nitroge N∶P hosphorus seston stoichiometry in marine and freshwaters.Limnol[ J] .Oceanogr, 2008 ,53 : 1169 -1180 link1
[ 8 ] 国家环境保护总局.水和废水监测分析方法编委会编.水和废水监测分析方法.第4版[M].北京:中国环境科学出版社,2002
[ 9 ] 谢贤群,王立军.水环境要素观测与分析[M].北京:中国标准出版社,1998
[10] 李原,张梅,王若南.滇池的水华蓝藻的时空变化[J].云南大学学报(自然科学版),2005,27(3):272-276 link1
[11] 孔繁翔,高光.大型浅水富营养化湖泊中蓝藻水华形成机理的思考[J].生态学报,2005,25(3):589-595 link1
[12] Smith V H.Low nitrogen to phosphorus ratios favor dominance by blue green algae in lake phytoplankton [ J ] .Scince, 1983 , 221 : link1
[13] Smith V H.Light and nutrient effects on the relative biomass of blue green algae in lake phytoplankton [ J] .Canadian Journal of Fisheries and Aquatic Sciences, 1986 ,43 :148 -153 link1
[14] Smith V H, Bennett S J.Nitrogen: phosphorus supply ratios and phytoplankton community structure in lakes [ J ] .Archiv für Hydrobiologie, 1999 , 146 :37 -53 link1
[15] 陈善娜,陈小兰,刘开庆,等.水华蓝藻生消的生物数学理论及其应用[J].云南大学学报(自然科学版),2005,27(2):161-165 link1
[16] 王绍强,于贵瑞.生态系统碳氮磷元素的生态化学计量学特征[J].生态学报,2008,8,28(8):3937-3947 link1
[17] Zhang Lixia , Bai Yongfei , Han Xingguo .Application of N∶P Stoichiometry to Ecology Studies [ J ] . Acta Botanica Sinica, 2003 , 45 ( 9 ) : 1009 -1018 link1
[18] Elser J J, Gorokhova E, Sterner R W, et al.Biological stoichi- ometry from gene to ecosystem[ J] .Ecology Letters, 2000 ,3 :540 -550 link1
[19] Elser J J, Acharya K, Kyle M, et al.Growth rate – stoichiomet- ry couplings in diverse biota[ J] .Ecology Letters, 2003 ,6 : 936 -943 link1
[20] Jeyasingh P D, Weider L J.Fundamental links between genes and elements: evolutionary implications of ecological stoichiometry[ J ] .Molecular ecology, 2007 , 22 ( 16 ) : 4649 - 4661 link1
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