Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Empirical Relations of Nutrients, N : P Ratios, and Chlorophyll in the Drinking Water Supplying Dam and Agricultural Reservoirs

  • Lee, Sang-Jae (Department of Biology, School of Bioscience and Biotechnology, Chungnam National University) ;
  • An, Kwang-Guk (Department of Biology, School of Bioscience and Biotechnology, Chungnam National University)
  • Published : 2008.12.31
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Abstract

This study were to evaluate trophic conditions, N : P ratios, and empirical relations of chlorophyll (CHL) systematically using TN, TP, and CHL values in agricultural reservoirs and drinking water supplying dams. During the study, nutrients and CHL varied depending on seasonal conditions and types of the reservoirs, but most reservoirs were diagnozed as eutrophic to hypertrophic. Mass ratios of TN : TP averaged 93.1 (range: $0.68{\sim}1342$) and about 96.6 % of the total observations (n=516) was > 17 in the N : P ratios. This result suggests that P was a potential factor limiting algal growth in the entire reservoir. Thus, TN : TP ratios were a function of phosphorus rather than nitrogen. Regression analysis of log-transformed N : P ratios against TP in DWDRs and ARs showed that ratios were linearly declined with an increase of TP ($R^2$>0.66; p<0.001). Seasonal mean CHL was minimum ($4.3{\mu}g\;L^{-1}$, range: $0.1{\sim}39.7{\mu}g\;L^{-1}$) in premonsoon, and was similar between the monsoon and postmonsoon. In contrast, one of the tremendous features was that values of CHL was greater in the ARs than DWDRs. Thus, the spatial and temporal patterns in CHL were similar to those of TP but not TN. Empirical models of CHL-TP showed that CHL variation could explain average 15.3% and 11.3% in DWDRs and ARs, respectively. Seasonal analysis of empirical models showed that CHL-TP relations were stronger in postmonsoon than those of premonsoon and monsoon.

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References

  1. An, K.G. and J.R. Jones. 2002. Reservoir response to the Asia monsoon with an emphasis on longitudinal gradients. J. Freshwater Ecology. 17: 151-160 https://doi.org/10.1080/02705060.2002.9663878
  2. An, K.G., J.K. Kim and S.J. Lee. 2008. Reservoir trophic state and empirical model on nutrients, transparency, and chlorophyll-a along with their relations among the parameters. J. Environ. Biol. 26: 252-263
  3. Canfield, Jr., D.E. 1983. Prediction of chlorophyll-a concentrations in Florida lake: The importance of phosphorus and nitrogen. Water Res. Bull. 19: 255-262 https://doi.org/10.1111/j.1752-1688.1983.tb05323.x
  4. Cha, S.H. and G.B. Park. 2004. A Study on estimate of evaluation indices of water supply capacity for multipurpose dam. J. Environ. sciences. 13: 197-204 https://doi.org/10.5322/JES.2004.13.3.197
  5. Cho, K.J. and J.G. Shin. 1997. Dynamics of inorganic N : P nutrient from midstream to downstream of the Naktong river. Korean Journal of Limnology. 30: 85-95
  6. Dillon, P.J. and F.H. Rigler. 1974. The phosphoruschlorophyll relationship in lakes. Limnol. Oceanogr. 19: 767-773 https://doi.org/10.4319/lo.1974.19.5.0767
  7. Downing, J.A. and E. McCauley. 1992. The nitrogen: phosphorus relationship in lakes. Limnol. Oceanogr. 37: 936-945 https://doi.org/10.4319/lo.1992.37.5.0936
  8. Forsberg, O. and S.O. Ryding. 1980. Eutrophication parameters and trophic state indices in 30 Swedish waste-receiving lakes. Arch. Hydrobiol. 89: 189-207
  9. Hecky, R.E. and P. Kilham. 1988. Nutrient limitation of phytoplankton in freshwater and marine environments : A review of recent evidence on the effects of enrichment. Limnol. Oceanogr. 33: 796-822 https://doi.org/10.4319/lo.1988.33.4_part_2.0796
  10. Jones, J.R. and R.W. Bachmann. 1976. Prediction of Phosphorus and chlorophyll level in lakes. J. Water Poll. Control Fed. 48: 2176-2182
  11. Kimmel, B.L., O.T. Lind and L.H. Paulson. 1990. Reservoir primary production. pp. 133-199. In: Reservoir Limnology: Ecological Perspectives (K.W. Thornton et al. eds.). John Wiley and Sons, New York
  12. Morris, D.P. and W.M. Lewis. 1988. Phytoplankton nutrient limitation in Colorado mountain lakes. Freshwater Biol. 20: 315-327 https://doi.org/10.1111/j.1365-2427.1988.tb00457.x
  13. OECD. 1982. Eutrophication of waters. Monitoring, assessment and control. Organisation for Economic Co-operation and Development, Paris, France. 154pp
  14. Porella, D.B. and A.B. Bishop. 1975. Comprehensive management of phosphorus water pollution. Ann Arbor Science, Ann Arbor, Mich. 303pp
  15. Prairie, Y.T., C.M. Duarte and J. Kalff. 1989. Unifying nutrient-chlorophyll relationships in lakes. Can. J. Fish Aquat. Sci. 46: 1176-1182 https://doi.org/10.1139/f89-153
  16. Riley, E.T. and E.E. Prepas. 1985. Comparison of the phosphorus-chlorophyll relationships in mixed and stratified lakes. Can. J. Fish Aquat. Sci. 42: 831-835 https://doi.org/10.1139/f85-106
  17. Shin, J.K. and K.J. Cho. 2000. Seasonal dynamics and pollution status of the water quality in the Kum river reservoir. Korean Journal of Limnology. 33: 251-259
  18. Smith, V.H. 1983. Low nitrogen to phosphorus ratios favor dominance by blue-green in lake phytoplankton. Science. 221: 669-671 https://doi.org/10.1126/science.221.4611.669
  19. United Nations (UN). 1992. Protection of inland waters against eutrophication. New York, ECE/ENVWA/26. 29pp
  20. Yoo, C.S. and H.K. Park. 2007. Analysis of morphological characteristics of farm dams in Korea. Geographical Society. 42: 940-954