Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Distribution of Particulate Organic Matters along the Salinity Gradients in the Seomjin River Estuary

섬진강 하구역에서 염분경사에 따른 입자성 유기물질의 분포

  • Kwon Kee Young (Department of Oceanography, Pukyong National University) ;
  • Moon Chang Ho (Department of Oceanography, Pukyong National University) ;
  • Kang Chang Keun (Department of National Fisheries Research k Development Institute) ;
  • Kim Young Nam (Oceanography, Pukyong National University)
  • Published : 2002.01.01
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Abstract

The distributions of suspended particulate matter (SPM), chlorophyll a, particulate organic carbon (POC) and nitrogen (PON) and particulate biogenic silica (PBSi) along the salinity gradient were investigated in the Seomjin River estuary from March 1999 to April 2001. Sampling sites were set based on the surface salinity during each cruise rather than geographic locations. Concentrations of SPM were less than 20 mg/L, suggesting relatively low input of terrestrial SPM despite large freshwater discharge through Seomiin River, Chlorophyll a peaks occurred at 5$\~$ 15 psu salinity zone (10$\~$20 km from Nan Cho Island) in November 1999, at 15$\~$25 psu (10$\~$20 km) salinity zone in April 2000 and at 1$\~$15 psu salinity zone (15$\~$20 km) in October 2000 (ca. 8$\~$58%\mu$g/L). Concentrations of POC, PON and PBSi were also high at the same zone. Relatively low ratios of POC to chlorophyll a in mid-salinity zone where POM peak occurred suggests high contribution of living phytoplankton to the total POC. On the other hand, relatively high ratios of POC to chlorophyll $\alpha$ in very low salinity zone and the mouth of estuary indicated relatively high portions of detrital POC. Consequently, the low concentrations of SPM in this estuary and the high concentrations of chlorophyll $\alpha$ and the low ratios of POC to chlorophyll $\alpha$ in the mid-salinity zone suggest that production of living phytoplankton is primary factor in controlling distribution of POM along the salinity gradients in the Seomjin River estuary.

1999년 3월부터 2001년 4월까지 섬진강하구역에서 염분경사에 따른 부유입자물질 (SPM), 엽록소 $\alpha$, 입자유기 탄소 (POC)와 질소 (PON) 그리고 입자유기규소 (PBSi)의 분포를 조사하였다. 조사 정점은 지리적 위치보다는 각 조사시마다 표층염분을 현장에서 측정하여 결정하였다. 섬진강으로부터 다량의 육수가 유입됨에도 불구하고 대부분의 조사시기에서 SPM의 농도는 20mg/L 이하로 낮아 섬진강을 통해 유입되는 육상기원의 SPM 공급은 낮은 것으로 판단된다. 1999년 11월의 5$\~$15psu (난초도로부터 10$\~$20km), 2000년 4월의 15$\~$25psu (10$\~$20km), 그리고 2000년 10월의 약1$\~$15psu (15$\~$20km) 염분구간에서는 엽록소 a농도가 약 8$\~$58$\mu$g/L로 매우 높았으며 POC, PON 및 PBSi의 농도도 매우 높았다. POM의 농도가 매우 높았던 염분역을 포함한 중간염분역에서의 POC와 엽록소 $\alpha$ 비가 비교적 낮아 POC의 대부분이 식물플랑크톤으로 구성되어 있음을 보여주고 있다. 반면, 초저염분역과 하구 입구에서는 POC와 엽록소 $\alpha$ 비가 상대적으로 높아 담수 및 저층으로부터의 detrital POC 공급이 있었음을 의미한다. 따라서 섬진강 하구수역에서의 비교적 낮은 SPM 농도와 중간염분역에서의 높은 엽록소 $\alpha$ 농도 및 낮은 POC와 엽록소 $\alpha$ 비는 식물플랑크톤 생산이 염분에 따른 POM의 분포를 조절하는 가장 중요한 요인임을 시사해 준다.

Keywords

References

  1. Brzezinski, M.A. 1985. The Si:C:N ratio of marine diatoms: Interspecific variability and the effect of some environmental variables. J. Phycol., 21, 347-357 https://doi.org/10.1111/j.0022-3646.1985.00347.x
  2. Cadee, G.C. 1984. Particulate and dissolved organic carbon and chlorophyll $\alpha$ in the Zaire River, estuary and plume. Neth. J. Sea Res., 17, 426-440 https://doi.org/10.1016/0077-7579(84)90059-0
  3. Cauwet, G. 1981. Non-living particulate matter. In Marine organic chemistry. Evolution, composition, interactions and chemistry of organic matter in sea water, Duursma, E.K. and R. Dawson. eds. Elsevier, Amsterdam, pp. 79-85
  4. Cloern, J.E., A.E. Alpine, B.E. Cole, R.L.J. Wong, J.W. Wong, J.F. Arthur and M.D. Ball. 1983. River discharge controls phytoplankton dynamics in the Northern San Francisco Bay. Estuar. Coast. Shelf Sci., 16, 415-429 https://doi.org/10.1016/0272-7714(83)90103-8
  5. Conley, D.J. and S.S. Kilham. 1989. Differences in silica content between marine and freshwater diatoms. Limnol. Oceanogr., 34, 205-213 https://doi.org/10.4319/lo.1989.34.1.0205
  6. Conway, H.L, J.L. Parker, E.M. Yaguchi and D.L. Mellinger. 1977. Biological utilization and regeneration of silicon in Lake Michigan. J. Fish. Res. Board Can., 34, 537-544 https://doi.org/10.1139/f77-085
  7. Chung, C.S., G.H. Hong, S.H. Kim, J.K. Park, Y.I. Kim, D.S. Moon, K.I. Chang, S.Y. Nam and Y.C. Park. 2000. Biogeochemical fluxes through the Cheju Strait. J. Oceanogr. Soc. Korea, 5, 208-215 (in Korean)
  8. Duce, R.A. and E.K. Duursma. 1977. Inputs of organic matter to the ocean. Mar. Chem., 5, 319-339
  9. Edmond, J.M., A. Spivack, B.C, Grant, H. Ming-Hui, C. Zexiam, C. Sung and Z. Xiushau. 1985. Chemical dynamics of the Changjiang estuary. Continental Shelf Res., 4, 17-36 https://doi.org/10.1016/0278-4343(85)90019-6
  10. Eppley, R.W., W.G. Harrison, S.W. Chisholm and E. Stewart. 1977. Particulate organic matter in surface waters off Southern California and its relationship to phytoplankton. J. Mar. Res., 35, 671-696
  11. Holm-Hansen, O., C.J. Lorenzen, R.W. Holms and J.D.H. Strickland 1965. Fluorometric determination of chlorophyll. J. Cons. Perm. int. Explor. Mer., 30, 3-15 https://doi.org/10.1093/icesjms/30.1.3
  12. Hunter, B.L. and E.A. Laws. 1981. ATP and chlorophyll $\alpha$ as estimators of phytoplankton carbon biomass. Limnol. Oceanogr. 26, 944-956 https://doi.org/10.4319/lo.1981.26.5.0944
  13. Kaul, L.W. and P.N. Froelich. 1984. Modeling estuarine nutrient geochemistiy in a simple system. Geochim. Cosmochim. Acta., 48, 1417-1433 https://doi.org/10.1016/0016-7037(84)90399-5
  14. Ki, J.H. and K.R. Kim. 1987. Studies on chemical and biological processes in the Keum River estuary, Korea. II. Factors controlling chlorophyll-$\alpha$ distribution. J. Oceanogr. Soc. Korea, 22, 207-215 (in Korean)
  15. Kim, K.S., J.B. Lee, K.S. Lee, J.W. Kang and H.B. Yoo. 2001a. Ecological study of copepoda community in the lower Seomjin River system, Korea. Korean J. Limol., 33, 176-186 (in Korean)
  16. Kim, K.S., J.B. Lee, K.S. Lee and H.B. Yoo. 2001a. Change of rotifers community by salinity in the lower Seomjin River system, Korea. Korean J. Limol., 33, 162-185 (in Korean)
  17. Kim, K.R. and J.H. Ki. 1987. Studies on chemical and biological processes in the Keum River estuary, Korea. I. The cycle of dissolved inorganic nitrogen: Genera considerations. J. Oceanogr. Soc. Korea, 22, 191-206 (in Korean)
  18. Kim, S.J., D.C. Kim, H.I. Yi and I.M. Shin. 1996. Change in sedimentary process and distribution of benthic foraminifera in the eastern part of Kwangyang Bay, South Sea of Korea. J. Oceanogr. Soc. Korea, 1, 32-45 (in Korean)
  19. Kang, C.K., P.Y. Lee, P.J. Kim and H.G. Choi. 1993. Daily variation of particulate organic carbon in Wonmun Bay on the south coast of Korea in late summer. J. Kor. Fish. Soc., 26, 279-287
  20. Kang, C.K., P.J. Kim, W.C. Lee and P.Y. Lee. 1999. Nutrients and phytoplankton blooms in the southern coastal waters of Korea: I. The elemental composition of C, N and P in particulate matter in the coastal bay systems. J. Oceanogr. Soc. Korea, 34, 86-94
  21. Kwon, K.Y., P.G. Lee, C. Park, C.H. Moon and M.O. Park. 2001 a. Biomass and species composition of phytoplankton and zooplankton along the salinity gradients in the Seomjin River estuary. J. Oceanogr. Soc. Korea, 6, 93-102 (in Korean)
  22. Kwon, K.Y., C.H. Moon and H.S. Yang. 2001b. Behavior of nutrients along the salinity gradients in the Seomjin River estuary. J. Kor. Fish. Soc., 34, 199-206 (in Korean)
  23. Lee, P.Y., C.K. Kang, J.S. Park and J.S. Park. 1994. Annual change and C : N : P ratio in particulate organic matter in Chinhae Bay, Korea. J. Oceanogr. Soc. Korea, 29, 107-118
  24. Lee, P.Y., C.K. Kang, W.J. Choi, W.C. Lee and H.S. Yang. 2001 a. Temporal and spatial variations of particulate organic matter in the southeastern coastal bays of Korea. J. Kor. Fish. Soc., 34, 57-69 (in Korean)
  25. Lee, Y.S., J.S. Lee, R.H. Jung, S.S. Kim, W.J. Go, K.Y. Kim and J. Park. 2001b. Limiting nutrient on phytoplankton growth in Gwangyang Bay. J. Oceanogr. Soc. Korea, 6, 201-210 (in Korean)
  26. Lenz, J. 1977. Seston and its main components. In Macrobial Ecology of Brackish Water Environment-Ecological Studies, Rheinheimer, G., ed. Springer, Berlin, pp. 37-60
  27. Lorenzen, C.J. 1968. Carbon/chlorophyll relationship in an upwelling area. Limnol. Oceanogr., 13, 202-204 https://doi.org/10.4319/lo.1968.13.1.0202
  28. Monbet, Y. 1992. Control of phytoplankton biomass in estuaries: A comparative analysis of microtidal and macrotidal estuaries. Estuaries, 15, 563-571 https://doi.org/10.2307/1352398
  29. Moon, C.H. and K.Y. Kwon. 1994. Seasonal variation of particulate biogenic silica in the Nakdong River estuary. J. Oceanogr. Soc. Korea, 29, 5-16 (in Korean)
  30. Moon, C.H. and W.M. Dunstan. 1990. Hydrodynamic trapping in the formation of chlorophyll $\alpha$ peak in turbid, very low salinity waters of estuaries. J. Plankton Res., 12, 323-336 https://doi.org/10.1093/plankt/12.2.323
  31. Moon, C.H, C. Park and S.Y. Lee. 1993. Seasonal variations of nutrient and particulate organic matter in Asan Bay. J. Kor. Fish. Soc., 26, 173-181 (in Korean)
  32. Moon, C.H., H.S. Yang and K.W. Lee. 1996. Regeneration processes of nutrients in the polar front area of the East Sea: I. Relationships between water mass and nutrient distribution pattern in autumn. J. Kor. Fish. Soc., 29, 503-526 (in Korean)
  33. Paasche, E. 1980. silicon content of five marine plankton diatom species measured with a rapid filter method. Limnol. Oceanogr., 25, 474-480 https://doi.org/10.4319/lo.1980.25.3.0474
  34. Paasche, E. and I. Ostergren. 1980. The annual cycle of plankton diatom growth and silica production in the inner Oslofjord. Limnol. Oceanogr., 25, 481-494 https://doi.org/10.4319/lo.1980.25.3.0481
  35. Park, M.O., C.H. Moon, S.Y. Kim, S.R. Yang, K.Y. Kwon and Y.W. Lee. 2001. The species composition of phytoplankton along the salinity gradients in the Seomjin River estuary in Autumn, 2000: comparison of HPLC analysis and microscopic observations. Algae, 16, 179-188 (in Korean)
  36. Parsons, T.R., K. Stephens and J.D.H. Strickland. 1961. On the chemical composition of eleven species of marine phytoplankters. J. Fish. Res. Board Can., 18, 1001-1006 https://doi.org/10.1139/f61-063
  37. Parsons, T.R., M. Takahashi and B. Hargrave. 1984. Biological oceanographic process. 3rd edition. Pergamon press, pp. 143-157
  38. Pocklington, R. and J.D. Leonard. 1979. Terrigenous organic matter in sediments of the St. Lawrence estuary and the Saguenay Fjord. J. Fish. Res. Board Can., 36, 1250-1255 https://doi.org/10.1139/f79-179
  39. Riley, J.P. and R. Chester. 1971. Dissolved and particulate organic compounds in the sea. In: Introduction of Marine Chemistiy, J. P. Riley, ed. Academic Press, London, pp. 182-218
  40. Sharp, J.H., C.H. Culberson and T.M. Church. 1982. The chemistry of the Delaware estuary. General consideration. Limnol. Oceanogr., 27, 1015-1028 https://doi.org/10.4319/lo.1982.27.6.1015
  41. Strickland, J.D.H. and T.R. Parsons. 1972. A Practical Handbook of Seawater Analysis, 2nd ed. Bull. Fish. Res. Board Can. 167, 310 pp
  42. Yang, H.S., C.H. Moon, S.J. Oh and H.P. Lee. 1997. Regeneration processes of nutrients in the polar front area of the East Sea: II. Distribution of particulate organic carbon and nitrogen in winter, 1995. J. Kor. Fish. Soc., 30, 442-450 (in Korean)
  43. Yang, H.S., S.J. Oh, H.P. Lee, C.H. Moon, M.S. Han and B.K. Kim. 1998. Distribution of particulate organic matter in the Gampo upwelling area of the southwestern East Sea. J. Oceanogr. Soc. Korea, 33, 157-167
  44. Yang, J.S., J.Y. Jeong, J.Y. Heo, S.H. Lee and J.Y. Choi. 1999. Chemical mass balance materials in the Keum River estuary. 1. Seasonal distribution of nutrients. J. Oceanogr. Soc. Korea, 4, 71-79 (in Korean)
  45. Zeitzschel, B. 1970. The quantity, composition and distribution of suspended particulate matter in the gulf of California. Mar. Biol., 7, 305-318 https://doi.org/10.1007/BF00750823

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