Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Water-Blooms (Green-Tide) Dynamics of Algae Alert System and Rainfall-Hydrological Effects in Daecheong Reservoir, Korea

대청호 조류경보제의 녹조현상 동태와 강우-수문학적 영향

  • Shin, Jae-Ki (Center for Integrate Water Management of the Nakdong River, Korea Water Resources Corporation (K-water)) ;
  • Kang, Bok-Gyoo (Aquatic Ecosystem Conservation Division, Water Environment Management Bureau, Ministry of Environment) ;
  • Hwang, Soon-Jin (Department of Environmental Health Science, Konkuk University)
  • 신재기 (한국수자원공사 낙동강통합물관리센터) ;
  • 강복규 (환경부 수생태보전과) ;
  • 황순진 (건국대학교 보건환경과학과)
  • Received : 2016.07.12
  • Accepted : 2016.09.30
  • Published : 2016.09.30
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Abstract

Daecheong Reservoir has suffered eutrophication and water-blooms by blue-green algae from initial impoundment, and algae alert system (AAS) was introduced in 1997. The purpose of this study was to investigate the effect of rainfall and hydrological factors in increase or decrease variability of green-tide and prolonged AAS, studied and analyzed the current situation of AAS has been operating for 19 years (1997~2015) in Daecheong Reservoir. The total issued number of AAS was 46 times, the most frequent period in August and September were 22 times (752 days) and 16 times (431 days), respectively, it accounted for 82.6%. Many number and frequency during this period were significantly associated with rainfall, various discharge and water level. Rainfall and hydrological events are associated with the rainy season of monsoon-Changma and the typhoon, it was concentrated in June~September, total rainfall in this period accounted for 69.9% of the annual rainfall. An increase in inflows was dependent on the intensity, frequency and the amount of rainfall. Accounted for 68.4% of the total annual inflow, it was a time when the most rapidly changing hydrological variability in the reservoir. The total outflow was closely related to rainfall, and compared the distinctive characteristics of hydropower generation and watergate-spillway discharge. In addition, the upreservoir zone of Daecheong Reservoir could be vulnerable to green-tide by regulating discharge of the upstream dam. The issue of AAS was strongly related to the with and without of watergate-spillway discharge. The watergate-spillway discharge had a total of 25 times, it was maximum 17 days from July to September in the year. And the opening times and each duration of the watergate were 1~4 times and the range of 3~37 days, respectively. When the watergate opened, the issue of AAS was maintained to 13 years and the movement of water bodies and green-tide was great about five times than that of non-open, had a profound effect on prolonged AAS within reservoir. In Daecheong Reservoir, Chusori (CHU) area of the So-ok Stream was still showing serious symptoms green-tide levels in the summer, but Janggye (JAN) waters of the main reservoir was pointed out that more important. AAS will be operated by an absolutely consider the rainfall and hydrological effects around the watergate-spillway discharge. The measures of green-tide will be included in the limnological studies more suited to the characteristics of the watershed and reservoir of the our country. Finally, from now on, we will prepare the systematic management and guidelines for vulnerable zone water-blooms that are the source within the reservoir before the monsoon rather than waiting for the arrival of green-tide on the operating stations of AAS.

대청호는 담수 초기부터 부영양화와 녹조현상을 겪었고, 조류경보제는 1997년에 도입되었다. 본 연구의 목적은 강우와 수문학적 요인이 녹조현상의 증감 변동과 조류경보제의 장기화에 미치는 영향을 파악하기 위하여 대청호에서 19년 (1997년~2015년) 동안 운영되어 온 조류경보제의 현황을 조사하고 분석하였다. 조류경보제의 총 발령횟수는 46회였고 8월과 9월에 각각 22회 (752일), 16회 (431일)로써 82.6%를 차지하였다. 이 기간에 빈도와 일수가 많았던 것은 강우, 유량 및 수위와 관련성이 컸다. 강우 및 수문사상은 장마와 태풍과 연관되어 6월~9월에 집중되었고, 총강수량은 연강수량의 69.9%를 차지하였다. 유입량의 증가는 강우의 강도, 빈도 및 그 양에 의존적이었다. 연간 총 유입량의 68.4%를 차지하여 저수지에서 수문변화가 가장 급변하는 시기였다. 총방류량도 강우량과 밀접한 관련성이 있었고, 발전방류와 수문방류의 특성이 잘 나타났다. 또한, 상류 댐의 조절 방류로 인해 대청호의 상류수역은 녹조현상에 취약할 수 있었다. 조류경보 발령은 저수지의 수문-여수로 방류의 유무와 관련성이 컸다. 수문방류는 총 25회가 있었고, 연중 7월~9월에 17일로써 최대였다. 개방횟수와 기간은 각각 1회~4회와 3일~37일 범위였다. 수문을 개방하였을 때 경보를 울린 해는 13년이었다. 수문개방에 의한 수체 및 녹조의 이동은 비개방 때보다 약 5배 정도 빨랐고, 저수지 내 조류경보제 장기화에 지대한 영향을 주었다. 녹조현상에서 CHU (소옥천의 추소리 수역)는 여전히 심각한 상태에 있으나, JAN (본류의 장계 수역)이 더욱 중요한 것으로 지적되었다. 조류경보제는 수문-여수로 방류를 중심으로 한 강우와 수문학적 영향을 반드시 고려하여 운영되어야 하겠다. 무엇보다 녹조현상의 대응책에 우리나라의 유역과 저수지 특성에 적합한 육수학적 대책이 포함되어야 하겠으며, 이제부터라도 조류경보제 운영지점에 녹조가 도착하기를 기다리는 것보다 장마 전에 녹조현상의 촉발에 근본적 원인이 되는 저수지 내 우심수역의 체계적 관리와 가이드라인이 필요하겠다.

Keywords

References

  1. Ahn, C.Y., A.S. Chung and H.M. Oh. 2002. Rainfall, phycocyanin, and N : P ratios related to cyanobacterial blooms in a Korean large reservoir. Hydrobiologia 474: 117-124. https://doi.org/10.1023/A:1016573225220
  2. Ahn, C.Y., D.K. Park, H.S. Kim, A.S. Chung and H.M. Oh. 2004. K : Fe ratio as an indicator of cyanobacterial bloom in a eutrophic lake. Journal of Microbiology and Biotechnology 14: 290-296.
  3. Ahn, C.Y., S.H. Joung, S.K. Yoon and H.M. Oh. 2007. Alternative alert system for cyanobacterial bloom, using phycocyanin as a level determinant. The Journal of Microbiology 45: 98-104.
  4. Ahn, J.M., S. Lee and T. Kang. 2014. Evaluation of dams and weirs operating for water resource management of the Geum River. Science of the Total Environment 478: 103-115. https://doi.org/10.1016/j.scitotenv.2014.01.038
  5. An, K.G. 2000a. Dynamics changes of dissolved oxygen during summer monsoon. Korean Journal of Limnology 33: 213-221.
  6. An, K.G. 2000b. Monsoon inflow as a major source of in-lake phosphorus. Korean Journal of Limnology 33: 222-229.
  7. An, K.G. 2000c. The impact of monsoon on seasonal variability of basin morphology and hydrology. Korean Journal of Limnology 33: 342-349.
  8. An, K.G. 2000d. An influence of point source and flow events on inorganic nitrogen fractions in a large artificial reservoir. Korean Journal of Limnology 33: 350-357.
  9. An, K.G. and J.R. Jones. 2000a. Factors regulating bluegreen doninance in a reservoir directly influenced by monsoon. Hydrobiologia 432: 37-48. https://doi.org/10.1023/A:1004077220519
  10. An, K.G. and J.R. Jones. 2000b. Temporal and spatial patterns in salinity and suspended solids in a reservoir influenced by the Asian monsoon. Hydrobiologia 436: 179-189. https://doi.org/10.1023/A:1026578117878
  11. An, K.G. and S.S. Park. 2002. Indirect influence of the summer monsoon on chlorophyll-total phosphorus models in reservoirs: a case study. Ecological Modelling 152: 191-203. https://doi.org/10.1016/S0304-3800(02)00020-0
  12. An, K.G. and S.S. Park. 2003. Influence of seasonal monsoon on the trophic state deviation in an Asian rain. Water, Air & Soil Pollution 145: 267-287. https://doi.org/10.1023/A:1023688819724
  13. An, K.G., J. Seo and S.S. Park. 2001. Influences of seasonal rainfall on physical, chemical and biological conditions near the intake tower of Taechung Reservoir. Korean Journal of Limnology 34: 327-336.
  14. Baxter, R.M. 1985. Environmental effects of reservoir. In: Gunnison, D. (Ed.), Microbial Processes in Reservoirs. pp. 1-26. Dr W. Junk Publishers, Dordrecht, Netherlands.
  15. Cheon, S.U., H.K. Park and H.U. Han. 2000. A study on Asterocaelum sp., a grazer of filamentous cyanobacteria in the Lake Daecheong. Korean Journal of Sanitation 15: 1-6. (in Korean)
  16. Cho, K.S., H.K. Byeon, Y.K. Kim and E.J. Lee. 1991. The plankton communities and the eutrophication of Lake Daechung. Environmental Research (Environmental Research Institute, Kangwon National University) 8: 21-44. (in Korean)
  17. Cho, W.H., K.T. Yum, J.S. Kim, Y.J. Ban and S.W. Chung. 2012. Study on algae occurrence in Daecheong Reservoir. Journal of Environmental Impact Assessment 21: 367-380. (in Korean)
  18. Chorus, I. and J. Bartram. 1999. Toxic cyanobacteria in water: A guide to their public health consequences, monitoring and management. E. & F.N. Spon.
  19. Chung, S.W. and H.S. Lee. 2011. Analysis of Microcystis bloom in Daecheong Reservoir using ELCOM-CAEDYM. Journal of Korean Society on Water Quality 27: 73-87. (in Korean)
  20. Chung, S.W., H.S. Lee, J.K. Choi and I.G. Ryu. 2009. Simulations of thermal stratification of Daecheong Reservoir using three-dimensional ELCOM model. Journal of Korean Society on Water Quality 25: 922-934. (in Korean)
  21. Chung, S.W., I.H. Ko and Y.K. Kim. 2008. Effect of reservoir flushing on downstream river water quality. Journal of Environmental Management 86: 139-147. https://doi.org/10.1016/j.jenvman.2006.11.031
  22. Chung, S.W., J. Imberger, M.R. Hipsey and H.S. Lee. 2014. The influence of physical and physiological processes on the spatial heterogeneity of a Microcystis bloom in a stratified reservoir. Ecological Modelling 289: 133-149. https://doi.org/10.1016/j.ecolmodel.2014.07.010
  23. Chung, S.W., M.R. Hipsey and J. Imberger. 2009. Modelling the propagation of turbid density inflows into a stratified lake: Daecheong Reservoir, Korea. Environmental Modelling & Software 24: 1467-1482. https://doi.org/10.1016/j.envsoft.2009.05.016
  24. Falconer, I.R., M.D. Burch, D.A. Steffensen, M. Choice and O.R. Coverdale. 1994. Toxicity of the blue-green algae (cyanobacterium) Microcystis aeruginosa in drinking water to growing pigs, as an animal model for human injury and risk assessment. Environmental Technology and Water Quality 9: 131-139. https://doi.org/10.1002/tox.2530090209
  25. Han, J.S. and M.S. Kim. 1999. Eutrophication forecasting of Daecheong multipurpose reservoir. Journal of Korea Society of Environmental Administration 5: 261-269. (in Korean)
  26. Han, K.Y. and C.H. Baek. 2004. Development of water quality management system in Daecheong Reservoir using geographic information system. The Journal of GIS Association of Korea 12: 13-27. (in Korean)
  27. Han, W.W., K.H. Kim and T.B. Ahn. 2003. A study on the parameters of WASP5 model in Daechung Reservoir. Journal of the Korean Geoenvironmental Society 4: 69-77. (in Korean)
  28. Hur, J., D.H. Lee and H.S. Shin. 2009. Comparison of the structural, spectroscopic and phenanthrene binding characteristics of humic acids from soils and lake sediments. Organic Geochemistry 40: 1091-1099. https://doi.org/10.1016/j.orggeochem.2009.07.003
  29. Jeong, D.H., H. Kim, Y.J. Lee, S. Hong, J. Yoon, H. Choi and H.L. Cho. 2012. A study on selection and measures of the apprehensive areas of soil loss in the So-ok Stream watershed. Journal of Environmental Impact Assessment 21: 617-629. (in Korean)
  30. Jeong, D.H., J. Lee, K. Kim, D. Lee, S. Hong, J. Yoon, S. Hong and T. Kim. 2011. A study on the management and improvement of alert system according to algal bloom in the Daecheong Reservoir. Journal of Environmental Impact Assessment 20: 915-925. (in Korean)
  31. Jin, Y., K. You, D. Rhew, J. Lee, M. Byeon, S. Kim, H. Choi, H. Kong, Y. Shin, M. Song, H. Park, K. Lee, I. Lee, B. Lee and M. Hwang. 2014. Research on the Improvement of HABAS at Drinking Water Source of Rivers and Lakes. A report of National Institute of Environmental Research, NIER-RP2014-296. Incheon, Korea. 23p. (in Korean)
  32. Joung, S.H., C.Y. Ahn, A. Choi, K.Y. Jang and H.M. Oh. 2005. Relation between rainfall and phytoplankton community in Daechung Reservoir. Korean Journal of Environmental Biology 23: 57-63. (in Korean)
  33. Joung, S.H., H.M. Oh, S.R. Ko and C.Y. Ahn. 2011. Correlations between environmental factors and toxic and non-toxic Microcystis dynamics during bloom in Daechung Reservoir, Korea. Harmful Algae 10: 188-193. https://doi.org/10.1016/j.hal.2010.09.005
  34. Jung, T.S. and J.H. Hwang. 2003. Modeling of water circulation and suspended sediment transport in Lake Daecheong. Journal of the Korean Society for Marine Environmental Engineering 6: 67-82. (in Korean)
  35. Kennedy, R.H., K.W. Thornton and D.E. Ford. 1985. Characterization of the reservoir ecosystem. In: Gunnison, D. (Ed.), Microbial Processes in Reservoirs. pp. 27-38. Dr W. Junk Publishers, Dordrecht, Netherlands.
  36. Kim, C.H. and J.H. Lee. 2000. Seasonal variations of environmental factors and distribution of Anabaena cylindrica growth-inhibiting bacteria in the lower Daechung Reservoir. Korean Journal of Limnology 33: 128-135. (in Korean)
  37. Kim, C.H., J.H. Lee, D.H. Kim and Y.K. Choi. 1998. The relationship between cyanobacterial bloom and distribution of microorganisms that inhibit the growth of Anabaena cylindrica in Daechung dam Reservoir. Korean Journal of Limnology 31: 173-180. (in Korean)
  38. Kim, H.J., Y.J. Lim, J.A. Song, M. Park and D.Y. Chung. 2012a. Regional and environmental status of upper basin of Daechung Reservoir to predict nitrogen and phosphorus loads from aerable land and forest stand. Korean Journal of Soil Science and Fertilizer 45: 690-697. (in Korean) https://doi.org/10.7745/KJSSF.2012.45.5.690
  39. Kim, J.M., S.J. Maeng, H.S. Kim and T.W. Kim. 2012b. A calculation of sediment inflowing to Daechung Reservoir considering the flood season. Korean Review of Crisis and Emergency Management 8: 121-136. (in Korean)
  40. Kim, K.Y., J.B. Khan, I.C. Choi, S.H. Hong, J.B. Lee, S.H. Lee and J.J. Lee. 2015. Temporal and spatial distribution of geosmin and 2-MIB in the Daecheong Reservoir. Korean Journal of Environmental Agriculture 34: 20-26. (in Korean)
  41. Kim, M.K., J.K. Shin and H.K. Ji. 2005. Probe of algal growth potential (AGP) by physio-biochemical analysis of microalgae in the stagnant watershed. Algae 20: 127-132. (in Korean) https://doi.org/10.4490/ALGAE.2005.20.2.127
  42. Kim, M.W. and S.J. Kim. 1997. Diel variation of environmental factors and carbon flow at the cyanobacterial blooming site of Daechung Reservoir. Korean Journal of Limnology 30: 1-7. (in Korean)
  43. Kim, M.W., M. Kim and S.J. Kim. 1994. Microbial activity and microbial loop in Daechung Reservoir. Korean Journal of Limnology 27: 155-168. (in Korean)
  44. Kim, M.W., M.H. Kim, J.C. Cho and S.J. Kim. 1995. Changes of biological community by cyanobacterial bloom in Daechung Reservoir. Korean Journal of Limnology 28: 1-9. (in Korean)
  45. Kim, S.G., S.K. Rhee, C.Y. Ahn, S.R. Ko, G.G. Choi, J.W. Bae, Y.H. Park and H.M. Oh. 2006. Determination of cyanobacterial diversity during algal blooms in Daechung Reservoir, Korea, on the basis of cpcBA intergenic spacer region analysis. Applied and Environmental Microbiology 72: 3252-3258. https://doi.org/10.1128/AEM.72.5.3252-3258.2006
  46. Kim, T.K., J.H. Choi, K.J. Lee, Y.B. Kim and S.J. Yu. 2014. Study on introduction to predicting indicator of cyanobacteria dominance in algae bloom warning system of Hangang basin. Journal of Korean Society of Environmental Engineering 36: 378-385. (in Korean) https://doi.org/10.4491/KSEE.2014.36.5.378
  47. Ko, S.R., S.J. Park, C.Y. Ahn, A. Choi, J.S. Lee, H.S. Kim, B.D. Yoon and H.M. Oh. 2004. Analysis of microbial communities during cyanobacterial bloom in Daechung Reservoir by DGGE. The Korean Journal of Microbiology 40: 205-210. (in Korean)
  48. Korea Water Resources Corporation (K-water). 1998. Annual Report of Dam Operation Management. Daejeon, Korea. (in Korea)
  49. Korea Water Resources Corporation (K-water). 1999. Annual Report of Dam Operation Management. Daejeon, Korea. (in Korea)
  50. Korea Water Resources Corporation (K-water). 2007. A Study on the Development Mechanisms and Reduction Technology of Water-Bloom in the River-Reservoir System. Interim Report No. KIWE-WERC-2007-03. Daejeon, Korea. 101p. (in Korean)
  51. Lee, C.S., C.Y. Ahn, H.J. La, S. Lee and H.M. Oh. 2013. Technical and strategic approach for the control of cyanobacterial bloom in fresh waters. Korean Journal of Environmental Biology 31: 233-242. (in Korean) https://doi.org/10.11626/KJEB.2013.31.4.233
  52. Lee, H.S., K.H. Oh and Y.C. Cho. 2008. Isolation of cyanobacteria producing microcystin from lakes. The Korean Journal of Microbiology 44: 251-257. (in Korean)
  53. Lee, I., C. Lee, S. Heo and J. Lee. 2011. Analysis of anatoxin-a in aqueous and cyanobacterial samples from Korean lakes by liquid chromatography with fluorescence detection. Analytical Science and Technology 24: 225-230. (in Korean) https://doi.org/10.5806/AST.2011.24.3.225
  54. Lee, J.H. 1998. Water quality modelling of Daechong Reservoir with geographic information system. Journal of the Korean Rigional Development Association 10: 151-166. (in Korean)
  55. Lee, J.M., J.J. Lee, J.G. Park, J.H. Lee, C.Y. Chang and S.M. Yoon. 2005. Zooplankton fauna and the interrelationship among Cladoceran populations and Microcystis aeruginosa (Cyanophyceae) during the cyanobacterial blooming season at Daecheong Lake, South Korea. Korean Journal of Limnology 38: 146-159. (in Korean)
  56. Lee, J.Y., S.R. Ha, I.H. Park, S.C. Lee and J.H. Cho. 2010. Characteristics of DOC concentration with storm density flows in a stratified dam reservoir. Water Science and Technology 62: 2467-2476. https://doi.org/10.2166/wst.2010.537
  57. Lee, K.J., W.M. Heo and B. Kim. 1993. Phosphorus loadings from watershed and fishfarms into Lake Daechung and the phosphorus budget. Journal of Korean Society on Water Quality 9: 80-85. (in Korean)
  58. Lim, B.S., H.J. Kim and C.J. Kwon. 2007. Comparison on the characteristics of water quality at the Daechung-dam and its regulating reservoir. The Institute of Environmental Studies (Daejeon University) 11: 37-56. (in Korean)
  59. Ministry of Environment (MOE). 1999. A White-Paper of Environment. Ministry of Environment, Seoul, Korea. (in Korean)
  60. Ministry of Environment (MOE). 2011. A White-Paper of Environment. Ministry of Environment, Seoul, Korea. (in Korean)
  61. Ministry of Environment (MOE). 2012. A White-Paper of Environment. Ministry of Environment, Seoul, Korea. (in Korean)
  62. Mun, J.J., S.W. Lee, S.J. Hwang and I.H. Oh. 2001. Seasonal fluctuation of chlorophyll a concentration in the size fractionation of phytoplankton in Daechung Reservoir. Korean Journal of Limnology 34: 277-284.
  63. National Rivers Authority (NRA). 1990. Toxic Blue-Green Algae. Water Quality Series No. 2, A repot by the NRA, London, UK. 125p.
  64. Newcombe, G., J. House, L. Ho, P. Baker and M. Burch. 2010. Management strategies for cyanobacteria (blue-green algae): A guide for water utilities. Water Quality Research Australia, Research Report No. 74.
  65. Noh, J. 2004. Evaluation of the water resources aspect of the operating results of the Daecheong multipurpose dam. Water Engineering Research 5: 17-35.
  66. OECD. 1982. Eutrophication of Waters: Monitoring, Assessment and Control. OECD, Paris. 154p.
  67. Oh, H.M., C.Y. Ahn, J.W. Lee, T.S. Chon, K.H. Choi and Y.S. Park. 2007. Community patterning and identification of predominant factors in algal bloom in Daechung Reservoir (Korea) using artificial neural networks. Ecological Modelling 203: 109-118. https://doi.org/10.1016/j.ecolmodel.2006.04.030
  68. Oh, H.M., S.J. Lee, J.H. Kim, H.S. Kim and B.D. Yoon. 2001. Seasonal variation and indirect monitoring of microcystin concentrations in Daechung Reservoir, Korea. Applied and Environmental Microbiology 67: 1484-1489. https://doi.org/10.1128/AEM.67.4.1484-1489.2001
  69. Oh, H.M., S.J. Lee, J.H. Park and J.S. Maeng. 1998. Vertical distribution and phosphorus component of cyanobacteria at the end of stratification in Daechung Reservoir. Korean Journal of Limnology 31: 54-61. (in Korean)
  70. Oh, K.C., H.M. Oh, J.H. Lee and J.S. Maeng. 1995. The diurnal vertical migration of phytoplankton in Daechung Reservoir. Korean Journal of Limnology 28: 437-446. (in Korean)
  71. Oh, K.H. and Y.C. Cho. 2015. Evaluation of contamination level of the sediments from Chusori and Chudong areas in Daechung Reservoir. Journal of Korean Society of Environmental Engineering 37: 277-284. (in Korean) https://doi.org/10.4491/KSEE.2015.37.5.277
  72. Oh, K.H., D.H. Jeong, S.Y. Yang, T.W. Jeon and Y.C. Cho. 2013. Effects of submerged aerator on the growth of algae in Daechung Reservoir. Journal of Korean Society of Environmental Engineering 35: 268-275. (in Korean) https://doi.org/10.4491/KSEE.2013.35.4.268
  73. Oh, K.H., Y.J. Kim and Y.C. Cho. 2015. Effects of sediments on the growth of algae at Chusori area in Daechung Reservoir. Journal of Korean Society on Water Environment 31: 533-542. (in Korean) https://doi.org/10.15681/KSWE.2015.31.5.533
  74. Oh, Y.T., J.C. Park, D.S. Kim and J.K. Rhyu. 2004. Pollutant characteristics of nonpoint source runoff in Okcheon Stream. Journal of Korean Society on Water Quality 20: 657-663. (in Korean)
  75. Paerl, H.W. 2014. Mitigating harmful cyanobacterial blooms in a human- and climatically-impacted world. Life 4: 988- 1012. https://doi.org/10.3390/life4040988
  76. Park, D.J., Y.S. Yuk, D.G. Park, S.H. Lee, H.M. Oh and C.J. Kim. 1998. Microbial distribution at sediments of Lake Daechung. The Korean Journal of Microbiology 34: 183-187. (in Korean)
  77. Park, H., S. Chung and S. Yoon. 2015a. Characterizing pollution loading and priority regions in So-Okcheon watershed. Journal of Industrial Science and Technology Institute 29: 51-55. (in Korean)
  78. Park, H.K., H. Kim, J.J. Lee, J.A. Lee, H. Lee, J.H. Park, J. Seo, S.J. Youn and J. Moon. 2011. Investigation of criterion on harmful algae alert system using correlation between cell numbers and cellular microcystins content of Korean toxic cyanobacteria. Journal of Korean Society on Water Quality 27: 491-498. (in Korean)
  79. Park, H.K., R.Y. Shin, H. Lee, K.L. Lee and S.U. Cheon. 2015b. Spatio-temporal characteristics of cyanobacterial communities in the middle-downstream of Nakdong River and Lake Dukdong. Journal of Korean Society on Water Environment 31: 286-294. (in Korean) https://doi.org/10.15681/KSWE.2015.31.3.286
  80. Park, J.G. 2005. Development characteristic of cyanobacterial bloom in Lake Daecheong. Korean Journal of Environmental Biology 23: 304-314. (in Korean)
  81. Park, J.K. 2001. A study on the physcicochemical characteristics of sediments in the Daechung reservoir. Journal of Korean Society of Environmental Administration 7: 117-128. (in Korean)
  82. Park, S.R., S.B. Oh and H.R. Byun. 2015c. Definition and characteristics of the water abunt season in Korea. Theoretical and Applied Climatology 120: 249-258. https://doi.org/10.1007/s00704-014-1164-5
  83. Reynolds, C.S. 1987. Cyanobacterial water-blooms. Advances in Botanical Research 13: 67-143.
  84. Reynolds, C.S. and A.E. Walsby. 1975. Water-blooms. Biological Reviews 50: 437-481.
  85. Shim, M.J., J.Y. Yoon and S.H. Lee. 2015. Water quality properties of tributaries of Daechung Lake, Korea. Korean Journal of Environment and Ecology 48: 12-25. (in Korean) https://doi.org/10.11614/KSL.2015.48.1.012
  86. Shin, J.K. 1998. Eutrophication and Ecological Characteristics of Algal Population in the Freshwater Zone of the Naktong River, Korea. Ph.D. Thesis, Inje University. 202p.
  87. Shin, J.K. and K.J. Cho. 2000. The impact on water quality from blue-green algae Microcystis of natural phytoplankton by algal assay. Journal of the Korean Environmental Science Society 9: 267-273. (in Korean)
  88. Shin, J.K. and K.J. Cho. 2001. The contents of nitrogen, phosphorus, silicon nutrient and algal growth potential (AGP) in the sediment of Taechong Reservoir. Korean Journal of Limnology 34: 106-118. (in Korean)
  89. Shin, J.K., D.S. Kim, H.K. Lee, S.J. Maeng and S.J. Hwang. 2003a. An evaluation of aquatic environment in the Okchon Stream-embayment watershed, Korea. Korean Journal of Limnology 36: 181-190. (in Korean)
  90. Shin, J.K., H.S. Yi, S.A. Jeong and S.J. Hwang. 2009. Construction of environmental friendly special-purpose ship for the removal of blue-green algae. Korean Journal of Limnology 42: 404-406. (in Korean)
  91. Shin, J.K., K.J. Cho and I.H. Oh. 1999. Dynamics of water environmental factors and phytoplankton in Taechong Reservoir. Korean Journal of Environmental Biology 17: 529-541. (in Korean)
  92. Shin, J.K., S. Lee and J.W. Choi. 2014. A practical new technology on removing algal bloom: K-water GATe water combine. Korean Journal of Ecology and Environment 47: 214-218. (in Korean) https://doi.org/10.11614/KSL.2014.47.3.214
  93. Shin, J.K., S.J. Hwang, C.K. Kang and H.S. Kim. 2003b. Hydrological and environmental factors: Limnological characteristics of the Korea. Korean Journal of Limnology 36: 242-256. (in Korean)
  94. Shin, J.K., Y. Kim, J. Noh, J. Kim and S.J. Hwang. 2016. Comparative study of the effects of proactive algal removal pilot test in the area occurring persistent green-tide outbreak (Chusori, the So-ok Stream of Daecheong Reservoir, Korea). Korean Journal of Ecology and Environment 49: (submitted).
  95. Srivastava, A., S. Singh, C.Y. Ahn, H.M. Oh and R.K. Asthana. 2013. Monitoring approaches for a toxic cyanobacterial bloom. Environmental Science and Technology 47: 8999-9013. https://doi.org/10.1021/es401245k
  96. Thornton, K.W., B.L. Kimmel and F.E. Payne. 1990. Reservoir Limnology: Ecological Perspectives. A Wiley-Interscience Publication, John Wiley & Sons, Inc. New York, USA. 256p.
  97. Wagner, I. and M. Zalewski. 2000. Effect of hydrological patterns of tributaries on biotic processes in a lowland reservoir - consequences for restoration. Ecological Engineering 16: 79-90. https://doi.org/10.1016/S0925-8574(00)00092-6
  98. Watanabe, M.F., K.I. Harada and H. Fujiki. 1994. Waterbloom of Blue-green algae and Their Toxins. University of Tokyo Press. Tokyo, Japan. 257p. (in Japanes)
  99. Watanabe, M.F., K.I. Harada, W.W. Carmichael and H. Fujiki. 1996. Toxic Microcystis. CRC Press, Inc. Florida, USA. 262p.
  100. Wetzel, R.G. 2001. Limnology: Lake and River Ecosystems. 3rd Edition. Academic Press, California, USA. 1006p.
  101. WHO. 2003. Guidelines for Safe Recreational Water Environments. World Health Organization, Geneva, Swiss. 219p.
  102. Yoo, H., B. Lee and S.W. Rhee. 2013. Correlation between Paldang Reservoir discharge and cayses of algal blooming. Journal of the Korea Organic Resource Recycling Association 21: 61-66. (in Korean)
  103. You, K.A., M.A. Song, M.S. Byeon, H.J. Lee and S.J. Hwang. 2014. The calculation method of cell count for the bloomforming (Green tide) cyanobacterium using correlation between colony area and cell number in Korea. Korea Journal of Ecology and Environment 47: 350-357. (in Korean) https://doi.org/10.11614/KSL.2014.47.4.350
  104. Yu, S., S. Ha and D. Jung. 2006a. The effect of current and temperature of a reservoir by the simulation of dam outflow. Journal of Korean Society on Water Quality 22: 1060-1067. (in Korean)
  105. Yu, S.J., J.Y. Hwang, M.H. Chae and S.Y. Kim. 2006b. The relationship between algae transport and current in the Daecheong Reservoir. Journal of Korean Society on Water Quality 22: 887-894. (in Korean)
  106. Yu, S.J., J.Y. Lee and S.R. Ha. 2010. Effect of seasonal pollution migration on natural organic matter behavior in a stratified dam reservoir. Journal of Environmental Sciences 22: 908-914. https://doi.org/10.1016/S1001-0742(09)60197-2