제주도 염지하수 수질의 시공간적 변화

Temporal and Spatial Variations of water Quality of the Coastal Saline Groundwaters in Jeju Island

  • 김성수 (국립수산과학원 환경관리과) ;
  • 김대권 (국립수산과학원 남해수산연구소) ;
  • 손팔원 (국립수산과학원 양식환경연구소) ;
  • 이창훈 (국립수산과학원 자원조성연구소) ;
  • 하동수 (국립수산과학원 자원조성연구소)
  • 발행 : 2003.02.01

초록

제주도 연안에 인접한 육상양식장에서 사용하는 염지 하수의 수질상태를 파악하기 위하여 1994년 3월부터 5월까지 75개 양식장의 염 지하수공을 선정하여 수질을 측정하였고, 계절변동특성을 파악하기 위하여 1994년 8월부터 1995년 12월까지 4개 양식장(김녕리, 신산리, 보목동, 귀덕리)의 염 하수와 연안수의 수질을 격월별로 측정하였다. 전체 염 지하수의 수온은 14.8~18.4$^{\circ}C$였고, 계절변동 폭은 16.5~18.8$^{\circ}C$였다. 염지하수 중 염분의 전체범위는 23.22~34.34 ppt 이며, 계절변동 폭은 20.60~34.02 ppt로 연안수(26.47~34.53 ppt) 보다 다소 큰데, 이는 일부지역 염 지하수의 염분 농도가 강우량의 영향을 받았기 때문이다. 용존산소포화도는 대부분의 염 지하수공에서 80% 이하(24.7~89.8%)로 불포화상태를 보였으며, 대체적으로 겨울과 가을에 낮았다. 염 지하수의 화학적 산소 요구량과 수소이온농도는 대체적으로 연안수와 비슷하였으며, 시기별 변화가 뚜렷하지 않았다. 전체 염 지하수 중 용존무기인의 범위는 0.021-0.121 mg/L였고, 계절변동폭은 0.014~0.077 mg/L로 연안수(0.000~0.051 mg/L) 보다 높았다. 질소화합물 중 질산질소가 대부분의 염 지하수에서 90% 이상을 차지하고 있다. 또한, 암모니아질소, 아질산질소, 질산질소 및 용존무기질소의 최대값은 각각 0.085 mg/L, 0.012 mg/L, 2.294 mg/L 및 2.309 mg/L로 양식생물에 영향을 줄 수 있는 농도 보다 현저히 낮았다. 따라서, 제주도내 염 지하수의 수질은 양식수로서 매우 적합한 것으로 판단된다.

We have investigated water quality of the coastal saline groundwaters utilized for fish farms in Jeju Island. The water quality investigation included the spatial observations for 75 fish farms during March-May, 1994 and the hi-monthly observations for both coastal saline groundwaters and seawaters at four fish farms from August 1994 to December 1995. Water temperature of the saline groundwaters ranged from 16 to 18$^{\circ}C$ over the study period. Salinity of the saline groundwaters varied between 20.60 ppt and 34.02 ppt, slightly lower than that of the coastal seawaters(26.47~34.53 ppt). This salinity variation must be associated with local precipitation conditions in Jeju Island. The oxygen saturation for most saline groundwater samples was lower than 80%, ranging from 24.7 to 89.8%. The COD and pH values for the saline groundwaters were similar to those for the coastal seawaters. The concentrations of DIP for the saline groundwaters varied between 0.021 mg/L and 0.121 mg/ L, and seasonal variation of DIP in the saline groundwater ranged from 0.014 to 0.077 mg/L, which were higher than that of the coastal seawaters(0.000~0.015 mg/L). Nitrate in the saline groundwaters accounted for more than 90% of the DIM. The maximum concentrations of ammonia, nitrite, nitrate and DIN in the saline groundwaters were 0.085, 0.012, 2.294 and 2.309 mg/L, respectively. These concentrations of the saline groundwaters were considerably lower than those affected culture organisms. Overall, the saline groundwaters utilized for fish farms in Jeju Island appear to maintain good waterquality for fish farms.

키워드

참고문헌

  1. Annu. Rev. Fish Disease v.1 Physiological changes in fish from stress in aquaculture with emphasis on the response and effects of corticosteroids. Barton, B. A.;G. K. Iwama
  2. J. of Aquaculture. v.8 Comparison on seedling production of marine fishes between recirculating and running seawater system. Chang, Y. J.;C. S. Ko;H. S. Yang
  3. J. Kor. Fish. Soc. v.32 Physiological responses of cultured olive flounder(Paralichthys olivaceus) on series of lowering seawater temperature shaply and continuously Chang, Y. J.;M. R. Park;D. Y. Kang;B. K. Lee.
  4. J. Kor. Fish. Soc. v.28 Culture of the olive flounder(Paralichthys olivaceus) in a semi-closed recirculating seawater system. Chang, Y. J.;S. H. Kim;H. S. Yang
  5. J. of Aquaculture v.1 Rearing density of a flounder, Paralichthys olivaceus juveniles in a closed recirculating sea water system -Possibility of high-density rearing Chang, Y. J.;S. K. Yoo
  6. J. of Aquaculture v.4 Salinity tolerance of eggs and juveniles of flounder, Paralichthys olivaceus(Temminck et Schlegel). Chun, J. C.;S. Rho
  7. Trans. Am. Fish. Soc. v.106 Seawater inhibition of nitrite toxicity to chinook salmon Crawford, R. E.;G. H. Allen
  8. Prog. Fish. Culture v.49 Acute toxicity of ammonia and nitrite to spotted seatrout. Daniels, H. V.;C. E. Boyd;R. V. Minton
  9. Aquaculture v.91 Physiological stress in striped bass: effect of acclimation temperature Davis, K. B.;N. C. Parker
  10. Bull. Japan Soc. Sci. Fish. v.46 Stress reactions in the marine fish-Ⅰ. Stress reactions induced by temperature change. Ishioka, H.
  11. J. Kor. Fish. Soc. v.30 Effects of ammonia on survival and growth of the flounder larva, Paralichthys olivaceus. Kim, H. S.;H. Y. Kim;P. Chin.
  12. Bull. Kor. Fish. Soc. v.27 A study on china coastal water appeared in the neighbouring seas of Cheju Island Kim, I. O.;H. K. Rho
  13. J. Kor. Environ. Sci. Soc. v.10 Study on the salinization in groundwater of the eastern area of Cheju Island. Kim, J. Y.;Y. K. Oh;A. P. Ryu
  14. Cheju Island Health Environ. v.3 A survey on the fluctuation of dissolved solids into the groundwater in Chejudo. Kim, S. H.;S. J. Shin;S. S. Oh;Y. C. Song;S. M. Oh;S. S. Lee;J. N. Koh;H. J. Koh;Y. K. Koh
  15. J. Kor. Soc. Oceanogr. The Sea v.3 Low salinity anomaly and nutrient distribution at surface waters of the south sea of Korea during 1996 summer. Kim, S. S.;W. J. Go;Y. J. Jo;P. Y. Lee;K. A. Jeon
  16. Report of Cheju Island Helth Environ. v.3 Study on the subsurface geologic structure, groundwater level fluctuation and groundwater quality of the eastern area of Cheju Island. Koh, G. W.;Y. K. Ko;S. H. Kim;S. S. Oh;W. B. Park;S. Yoon
  17. Bull. Mar. Resour. Res. Inst. v.2 A study on the chemical characteristics of ground-seawater in the eastern coast of Cheju Island. Oh, Y. K.;G. S. Park
  18. J. Kor. Environ. Sci. Soc. v.9 Physicochemical characteristics of groundwater salinization in the eastern area of Cheju Island. Oh, Y. K.;K. H. Kim;S. P. Ryu
  19. M.S. thesis, Cheju National University A study on the chemical characteristics of ground-seawater in the coastal of Cheju Island. Park, G. S.
  20. Aquaculture v.100 Rainbow trout husbandry: management of the stress response. Pickering, A. D.
  21. Experientia v.51 The effect of chronic heat stress on cortisol levels in the Antartic fish, Pagothenia borchgrevinki. Ryan, S. N.
  22. Suisanzoshoku v.27 The toxicity of nitrite to eel. Yamagata, Y.;M. Niwa
  23. Bull. Japan. Soc. Sci. Fish. v.48 Acute and chronic toxicity of ammonia to eel Anguilla japonica. Yamagata, Y.;M. Niwa
  24. 해양오염 및 적조조사지침 국립수산진흥원
  25. 남해수산연구소 사업보고서 제주연안 염지하수에 관한 연구. 김대권;손팔원
  26. 한국수산학회지 v.16 무여과순환수탱크이용 Tilapia의 고밀도사육실험 김인배
  27. 천해양식 유성규
  28. 제주대학 해양자원연보 감성돔, Mylio macrocephalus(Basilewsky)의 종묘생산에 관한 연구 이정식;노섬
  29. 제주도 지하수 순환시스템 조사 제주도
  30. 제주도 수문지질 및 지하수자원 종합조사(Ⅰ) 제주도
  31. 남해수산연구소 사업보고서 한국남해 해양 조사 조영조;고우진;김성수;김창길;김호상
  32. 恒星社厚生閣 魚類生理 川本信之
  33. 水産養殖講座 4 水族繁殖學 降島史夫;羽生功