Major nutrients and chlorophyll dynamics in Korean agricultural reservoirs along with an analysis of trophic state index deviation

다국어 초록 (Multilingual Abstract)

The main objectives of this study were to determine how Asian monsoon influences nutrient regime, suspended solids, and algal chlorophyll (CHL) in 182 agricultural reservoirs, and then to develop the empirical models of nutrients-chlorophyll. The intensity of summer monsoon directly determined the ambient concentrations of nitrogen (N) and phosphorus (P). Regression analysis of empirical model showed that CHL had a high linear relation (R2 = 0.716, p < 0.01) with total phosphorus but a weak relation (R2 = 0.041, p < 0.01) with total nitrogen. Seasonal empirical models of TP-CHL showed that the regression coefficients in premonsoon (R2 = 0.605) and postmonsoon (R2 = 0.554) were greater than that of the monsoon. Values of trophic state index (TSI) implied that phosphorus limitation was severe in the Korean agricultural reservoirs. Overall, our study of 182 reservoirs suggested that phosphorus was key nutrient regulating the phytoplankton growth. This phenomenon was supported by the analysis of trophic state index deviation relations of “TSI (CHL)−TSI (SD) < TSI (CHL) – TSI (TP)”.

참고문헌 (Reference)

1 Hwang SJ, "Water quality and limnology of Korean reservoirs" 1 : 43-52, 2003

2 Yoon KS, "Water management and N, P losses from paddy fields in Southern Korea" 42 : 1205-1216, 2006

3 Nurnberg GK, "Trophic state of clear and colored soft- and hardwater lakes with special consideration of nutrients, anoxia, phytoplankton and fish" 12 : 432-447, 1996

4 Xu MJ, "The simulation of shallow reservoir eutrophication based on MIKE21: a case study of Douhe Reservoir in North China" 13 : 1975-1988, 2012

5 Dillion PJ, "The phosphorusechlorophyll relationship in lakes" 37 : 907-913, 1974

6 Downing JA, "The nitrogen:phosphorus relationship in lakes" 37 : 936-945, 1992

7 Smith VH, "The nitrogen and phosphorus dependence of algal biomass in lakes: An empirical and theoretical analysis" 27 : 1101-1112, 1982

8 Kim B, "The limnological survey of major lakes in Korea (3): Lake Jinyang" 32 : 111-126, 1999

9 Barinova S, "The influence of the monsoon climate on phytoplankton in the Shibpukur pool of Shiva temple in Burdwan, West Bengal, India" 12 : 47-63, 2012

10 Knowlton MF, "Temporal and spatial dynamics of suspended sediment, nutrients, and algal biomass in Mark Twain Lake, Missouri" 135 : 145-178, 1995

11 American Public Health Association, "Standard methods for the examination of water and wastewater" American Public Health Association 1999

12 McCauley E, "Sigmoid relationships between nutrients and chlorophyll among lakes" 46 : 1171-1175, 1989

13 Raut R, "Seasonal variation of water chemistry of Panchpokhari: a case study of an alpine lake series in the Central Himalayas" 1 : 002-, 2015

14 Havens KE, "Seasonal and spatial variation in algal bloom frequency in Lake Okeechobee, Florida, U.S.A" 10 : 139-148, 1995

15 Sakamoto M, "Primary production by phytoplankton community in some Japanese lakes and its dependence on lake depth" 62 : 1-28, 1966

16 Canfield DJ, "Prediction of total phosphorus concentration, chlorophyllea and Secchi depths in natural and artificial lakes" 38 : 414-423, 1981

17 Khan MAS, "Physico-chemical and biological aspects of monsoon waters of Ashulia for economic and aesthetic applications:preliminary studies" 42 : 377-396, 2007

18 Ganju NK, "Physical and biogeochemical controls on light attenuation in a eutrophic, back-barrier estuary" 11 : 7193-7205, 2014

19 Bachmann RW, "Phosphorus inputs and algal blooms in lakes" 49 : 155-160, 1974

20 Mazumder A, "Phosphorus chlorophyll relationships under contrasting herbivory and thermal stratification: predictions and patterns" 51 : 390-400, 1994

21 An KG, "Monsoon inflow as a major source of in-lake phosphorus" 33 : 222-229, 2000

22 Svircev Z, "Methods for management of eutrophication in freshwater ecosystems in Vojvodina" 12 : 4-11, 2008

23 Kalff J, "Limnology" Prentice Hall 1-592, 2001

24 "Korea meteorological administration"

25 Ministry of Agriculture and Forestry (MAF), "Korea Agriculture and Rural Infrastructure Corporation (KOWACO)" Survey of irrigation water quality 2001

26 An KG, "Influence of seasonal monsoon on the trophic state deviation in an Asian reservoir" 145 : 267-287, 2003

27 An KG, "Indirect influence of the summer monsoon on chlorophylltotal phosphorus models in reservoirs: a case study" 152 : 191-203, 2002

28 Prepas EE, "Improvements in qualifying the phosphorus concentration in lake water" 39 : 822-829, 1982

29 Florida Lakewatch, "Florida Lakewatch data-1998. Library" University of Florida 1998

30 Sartory DP, "Extraction of chlorophyll-a from freshwater phytoplankton for spectrophotometric analysis" 114 : 177-187, 1984

31 Prepas EE, "Evaluation of the phosphorusechlorophyll relationship for lakes off the Precambrian shield in western Canada" 40 : 27-35, 1983

32 Heo WM, "Evaluation of eutrophication of lagoons in the east coast of Korea" 32 : 141-151, 1999

33 Sutcliff DW, "Eutrophication: research and application to water supply" Freshwater Biological Association 1-217, 1992

34 Joseph D, "Eutrophication study at the Panjiakou-Daheiting reservoirs system, northern Hebei province, People’s Republic of China:chlorophyll-a model and sources of phosphorus and nitrogen" 94 : 43-53, 2007

35 Forsberg C, "Eutrophication parameters and trophic state indices in 30 Swedish waste-receiving lakes" 89 : 189-207, 1980

36 Carlson RE, "Enhancing the states’ lake management programs" 59-71, 1991

37 Hwang SH, "Effects of physical characteristics on a nutrientechlorophyll relationship in Korean reservoirs" 44 : 64-73, 2002

38 Pridmore RD, "Chlorophyll-nutrient relationships in North Island Lakes (New Zealand)" 121 : 181-189, 1985

39 Kotak BG, "Blue-green algal toxins in drinking water supplies: research in Alberta" 14 : 37-40, 1994

40 Tran LT, "Application of hierarchy theory to the cross-scale hydrologic modeling of nutrient loads" 27 : 1601-1617, 2013

41 Walker Jr, "An empirical analysis of phosphorus, nitrogen, turbidity effects on reservoir chlorophyll-a levels" 7 : 88-107, 1982

42 Ekholm P, "Agricultural lakes in Finland: current water quality and trends" 116 : 111-135, 2006

43 Carlson RE, "A trophic state index for lakes" 22 : 361-369, 1977