Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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The Spring Metazooplankton Dynamics in the River-Reservoir Hybrid System (Nakdong River, Korea): Its Role in Controlling the Phytoplankton Biomass

강-저수지 복합형 시스템내 봄 동물플랑크톤의 역동성 (낙동강, 한국): 식물플랑크톤 생체량 조절자로서의 역할

  • Published : 2003.12.31
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Abstract

During a three-year study (2000-2002), dramatic changes in the phytoplankton biomass and high transparency were repeatedly observed during mid-spring in the lower part of the Nakdong River. Rotifers (Brachionus, Keratella, Polyarthra) , sharply increased toward the middle and end of spring. As hydrologic retention time increased (to near 20 days) and water temperature increased from $10^{\circ}C$ to > $20^{\circ}C$ toward the end of spring, small cladocerans noticeably increased. Once phytoplankton biomass passed their peak stage in the mid-spring, a short period (one or two weeks) of relatively low phytoplankton biomass and high Secchi transparencies occurred. Grazing by the zooplankton was highest in spring, thus, it seems that high grazing activities of zooplankton grazing regulated phytoplankton dynamics in the river. The results indicate that the role of zooplankton grazing in controlling the phytoplankton biomass becomes more important during the spring when river water is relatively stagnant.

지난 3년간(2000-2002), 식물플랑크톤 생체량의 역동적인 변화와 높은 투명도가 봄의 중순 기간 동안 낙동강 하류 부분에서 반복적으로 관찰되었다. 윤충류들은(Brachionus, Keratella, Polyarthra), 봄의 중순과 늦봄 기간 동안에 급격히 증가하였다. 늦봄 기간 동안 수체의 잔류시간의 중가 (약 20일 정도)와 수온의 상승시기에, $10^{\circ}C$로 부터 $20^{\circ}C$ 이상, 지각류의 증가를 나타내었다. 봄의 중순 높은 식물플랑크톤 생체량 시기 이후, 짧은 기간(약 1-2주)동안 낮은 식물플랑크톤 생체량과 높은 세키 투명도가 본 조사지점에서 나타났다. 봄 기간 동안 동물플랑크톤의 섭식률은 매우 높으며, 이러한 동물플랑크톤의 높은 섭식 활성도는 식물플랑크톤 동태를 조절하는 것으로 사료된다. 본 연구 결과는 강의 수체가 다소 정체되어 있는 봄 기간 동안 식물플랑크톤 생체량의 조절은 동물플랑크톤의 섭식에 의해 조절될 수 있음을 시사한다.

Keywords

References

  1. Alpine, A.E. and J.E. Cloern. 1988. Phytoplanktongrowth rates in a light limited environment, SanFrancisco Bay. Mar. Ecol.-Prog. Series 44: 167-173.
  2. Anderson, G.C., G.W. Comita and V. Engstrøm-Heg.1955. A note on the phytoplankton-zooplanktonrelationshipin two lakes in Washington. Ecol. 36:757-759.
  3. Basu, B.K. and F.R. Pick. 1997. Phytoplankton andzooplankton development in a lowland, temperatureriver. J. Plankton Res. 19: 237-253.
  4. Bayly, I.A.E. 1992. ‘The Non-marine Centropagidae(Copepoda: Calanoida) of the World.’ Guides tothe identification of the microinvertebrates of thecontinental waters of the world. No. 2. (SPB AcademicPublishing: The Hague).
  5. Brock, T.D. 1985. A Eutrophic Lake, Lake Mendota,Wisconsin. Springer-Verlag. New York. p. 308.
  6. Crumpton, W.G. and R.G. Wetzel. 1982. Effects ofdifferential growth and mortality in the seasonalsuccession of phytoplankton populations in LawrenceLake, Michigan. Ecol. 63: 1729-1739.
  7. De Ruyter van Steveninck, E.D., B. van Zanten andW. Admiraal. 1990. Phases in the development ofriverine plankton: examples from the rivers Rhineand Meuse. Hydrobiologia 24: 47-55.
  8. De Ruyter van Steveninck, E.D., W. Admiraal, L.Breebaart, G.M.J. Tubbing and B. van Zanten.1992. Plankton in the River Rhine, structural and functional changes observed during downstreamtransport. J. Plankton Res. 14: 1351-1368.
  9. Descy, J.P., P. Servais, J.S. Smitz, G. Billen and E.Everbecq. 1987. Phytoplankton biomass and productionin the River Meuse (Belgium). Wat. Res.21: 1557-1566.
  10. Gawler, M., G. Balvay, P. Blanc, J.-C. Druat and J.P.Pelletier. 1988. Plankton ecology of Lake Geneva:a test of the PEG-model. Arch. Hydrobiol. 114:161-174.
  11. Gosselain, V., J.P. Descy and E. Everbecq. 1994. Thephytoplankton community of the River Meuse,Belgium: seasonal dynamics (year 1992) and thepossible incidence of zooplankton grazing. Hydrobiologia289: 179-191.
  12. Greenberg, A.E. 1964. Plankton in the SacramentoRiver. Ecol. 45: 40-49.
  13. Ha, K., E.A. Cho, H.W. Kim and G.J. Joo. 1999. Microcystisbloom formation in the lower NakdongRiver, South Korea: importance of hydrodynamicsand nutrient loading. Mar. Freshwater Res. 50: 89-94.
  14. Ha, K., H.W. Kim and G.J. Joo. 1998. The phytoplanktonsuccession in the lower part of hypertrophicNakdong River (Mulgum), South Korea. Hydrobiologia.369/370: 217-227.
  15. Hutchinson, L. 1939. Some factors influencing zooplanktondistribution in the Hocking River. OhioJ. Sci. 39: 259-273.
  16. Jones, R.I. and R.J. Barrington. 1985. A study of thesuspended algae in the River Derwent, Derbyshire,UK. Hydrobiologia 128: 255-264.
  17. Kim, H.W., K. Ha and G.J. Joo. 1998. Eutrophicationof the lower Nakdong River after the constructionof an estuarine dam in 1987. Internat. Rev. Hydrobiol.83: 65-72.
  18. Kim, H.W. 1999. Water quality, plankton communitydynamics, and trophic regulation in the microbialfood web by zooplankton in a hypertrophic river(Nakdong River, Korea). -Ph. D. dissertation,Pusan National University, Pusan, p. 230.
  19. Kim, H.W., S.-J. Hwang and G.J. Joo. 1999. Grazingrates of rotifers and their contribution to communitygrazing in the Nakdong River. Korean J. Ecol.22: 337-342.
  20. Kim, H.W. and G.J. Joo. 2000. The longitudinal distributionand community dynamics of zooplanktonin a regulated large river: a case study of theNakdong River (Korea). Hydrobiologia 438: 171-184.
  21. Kim, H.W., S.-J. Hwang and G.J. Joo. 2000. Zooplanktongrazing on bacteria and phytoplanktonin a regulated large river (Nakdong River, Korea).J. Plankton Res. 22: 1559-1577.
  22. Kim, H.W., S.-J. Hwang, K.H. Chang, M.H. Jang,G.J. Joo and N. Walz. 2002. Longitudinal differencein zooplankton grazing on phyto- and bacterioplanktonin the Nakdong River (Korea). Internat. Rev. Hydrobiol. 87: 281-293.
  23. Kobayashi, T., P. Gibbs, P.I. Dixon and R.J. Shiel.1996. Grazing by a river zooplankton community:importance of microzooplankton. Mar. FreshwaterRes. 47: 1025-1036.
  24. Koste, W. 1978. Rotatoria. Die Radertiere Mitteleuropas.Ein Bestimmungswerk begrundet von MaxVoigt, 2nd edn. (Borntrager: Stuttgart, Vol. 1,Textband p. 673, Vol. 2. Textband p. 234)
  25. Koste, W. and R.J. Shiel. 1987. Rotifera from Australianinland waters II. Epiphanidae and Brachionidae(Rotifera: Monogononta). InvertebrateTaxonomy 1, p. 949-1021.
  26. Lampert, W. 1985. The role of zooplankton: an attemptto quantify grazing. In ‘Lakes Pollution andRecovery’. p. 54-62. (Proc. Int. Congr. Eur. WaterPollut. Contr. Assoc.: Rome)
  27. Porter, K.G. 1977. The plant-animal interface infreshwater ecosystems. American Scientist 65:159-170.
  28. Rai, H. 1974. Limnological studies on the River Yamunaat Delhi, India, Part 2. The dynamics ofpotamoplankton populations in the River Yamuna.Arch. Hydrobiol. 73: 492-517.
  29. Reynolds, C. S. 1988. Potamoplankton: paradigms,paradoxes and prognoses. In ‘Algae and the AquaticEnvironment’. (Ed. Round, F.E.) p. 285-311(Biopress: Bristol.).
  30. Saunders, J.F. III and W.M. Jr. Lewis. 1989. Zooplanktonabundance in the lower Orinoco River, Venezuela. Limnol. Oceanogr. 34: 397-409.
  31. Shiel, R.J. and K.F. Walker. 1984. Zooplankton ofregulated and unregulated rivers: The MurrayDarling River System, Australia. In ‘RegulatedRivers.’ (Eds. Lillehammer, A. and S.J. Saltveit)p. 263-270 (University of Oslo Press: Oslo).
  32. Shiel, R.J., K. Walker and W.D. Williams. 1982.Plankton of the lower River Murray, South Australia.Aust. J. Mar. Fresh. Res. 33: 301-327.
  33. Smirnov, N.N. and B.V. Timms. 1983. A revision ofthe Australian Cladocera (Crustacea). Records ofthe Australian Museum Supplement 1: 1-132.
  34. Sommer, U., Z.M. Gliwicz, W. Lampert and A. Duncan.1986. The PEG-model of seasonal successionof plankton in fresh waters. Arch. Hydrobiol. 106:433-471.
  35. Thorp, J.H., A.R. Black and K.H. Haag. 1994. Zooplanktonassemblages in the Ohio River: seasonal,tributary, and navigation dam effects. Can. J.Fish. Aquat. Sci. 51: 1634-1643.
  36. Viroux, L. 1997. Zooplankton development in twolarge lowland rivers, the Moselle (France) and theMeuse (Belgium), in 1993. J. Plankton Res. 19:1743-1762.
  37. Wetzel, R.G. and G.E. Likens. 1991. LimnologicalAnalyses, 2nd edn. Springer-Verlag. New York.p. 369.