Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Spatial Dynamics of Diatom Community in the Mid to Lower Part of the Nakdong River, South Korea

  • Published : 2007.12.31
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Abstract

Phytoplankton community dynamics were studied from 2004 to 2006 with two and four weeks interval at mid to lower part of the Nakdong River (Waegwan: RK 194, Goryeong: RK 157, Jukpo: RK 112, Namji: RK 75 and Hanam: RK 63: RK: distance from the Estuarine Barrage), South Korea. Annual averages of water temperature was about $16^{\circ}C$, and dissolved oxygen was ranged between 10.0 and 11.5 mg $L^{-1}$ (percent saturation, 106.5 to 112.8%). Diatoms were dominant group with over 60% of phytoplankton abundance in all study sites (Waegwan: 64%, Goryeong: 69%, Jukpo: 73%, Namji: 79%, and Hanam: 83%). However, the occasional dominances of other groups such as green algae and blue-green algae were observed from March to October. Stephanodiscus hantzschii was dominant species and the relative abundances were highat all study sites (48-72%). The ratio of S. hantzschiiltotal phytoplankton abundance were showed a clear increasing tendency toward the estuarine barrage: i.e. 0.31 at Waegwan, 0.39: Goryeong, 0.50: Jukpo, 0.56: Namji, 0.60: Hanam. The results of this study provide the information that the phytoplankton community structure in a regulated river system is basically affected by the physical properties such as water velocity and retention time, resulting in single species dominance by the stagnancy of river flow.

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References

  1. Bauder, E.T. 2005. The effects of an unpredictable precipitation regime on vernal pool hydrology. Freshw. Biol. 50: 2129-2135 https://doi.org/10.1111/j.1365-2427.2005.01471.x
  2. Bertrand, C., V. Siauve, S. Fayolle and A. Cazaubon. 2001. Effects of hydrological regime on the drift algae in a regulated Mediterranean river (River Verdon, southeastern France). Regulated Rivers. 17: 407-416 https://doi.org/10.1002/rrr.654
  3. Cassie, V. 1989. A contribution to the study of New Zealand Diatoms. J. Cramer
  4. Cox, E.J. 1996. Identification of freshwater diatoms from live material. Champman & Hall, London
  5. Foged, E. 1978. Diatoms in Eastern Australia. J. Cramer
  6. Ha, K., H.W. Kim and G.J. Joo (1998), The phytoplankton succession in the lower part of hypertrophic Nakdong River (Mulgum), South Korea. Hydrobiol. 369/370: 217-227 https://doi.org/10.1023/A:1017067809089
  7. Ha, K., M.H. Jang and G.J. Joo. 2002. Spatial and temporal dynamics of phytoplankton communities along a regulated river system, the Nakdong River, Korea. Hydrobiol. 470: 235-245 https://doi.org/10.1023/A:1015610900467
  8. Ha, K, M.H. Jang and G.J. Joo. 2003. Winter Stephanodiscus bloom development in the Nakdong River regulated by an estuary dam and tributaries. Hydrobiol. 506-509: 211-227
  9. Hilton, J., M.O'Hare, M.J. Bowes and J.I. Jones. 2006. How green is my river? A new paradigm of eutrophication in rivers. Sci. Total Environ. 365: 66-83 https://doi.org/10.1016/j.scitotenv.2006.02.055
  10. Kim, D.K., H.W. Kim, G.Y. Kim, Y.S. Kim, M.C. Kim, K.S. Jeong and G.J. Joo. 2005. Prolonged turbidity of the lower Nakdong River in 2003. Korean J. Limnol. 38: 44-53
  11. Lee, W.S. and M.S. Han. 2004. Community structure of plankton in eutrophic water systems with different residence time. Korean J. Limnol. 37(3): 263 -271
  12. Maheshwari, B.L., K.F. Walker and T. A. McMahon. 1995. Effects of regulation on the flow regime of the River Murray, Australia. Regulated Rivers. 10: 15-38 https://doi.org/10.1002/rrr.3450100103
  13. Park, S.B., S.K. Lee, K.H. Chang, K.S. Jeong and G. J. Joo (2002), The impact of Jangma (monsoon rainfall) on the changes of water quality in the lower Nakdong River (Mulgeum), Korean J. Limnol. 35: 161-170
  14. Rader, R.B. and T.A. Belish. 1999. Influence of mild to severe flow alterations on invertebrates in three mountain streams. Regulated Rivers. 15: 353-363 https://doi.org/10.1002/(SICI)1099-1646(199907/08)15:4<353::AID-RRR551>3.0.CO;2-U
  15. Round, F.E., R.M. Crawford and D.G. Mann. 1990. The diatoms. Cambridge University Press
  16. Stober, O.J. and R.E. Nakatani. 1992. Water quality and biota of the Columbia River system, in Water quality in North American River System, edited by Becker, C.D. and D.A. Neizel. Battelle press, Columbia. p. 55-83
  17. Thornton, K.W., B.L. Kimmel and F.E. Payne. 1990. Reservoir Limnology, Ecological Perspectives. J. Wiley & Sons, New York
  18. Utermohl, H. 1958. Zur vervollkommnung der quantitativen phytoplankton-methodik. Mitt. Int. Ver. Theor. Angew. Limnol. 9: 1-38
  19. Vollenweider, R.E. 1968. Scientific fundamentals of the eutrophication of lakes and flowing waters, with particular reference to nitrogen and phosphorus as factors in eutrophication. OECD, Paris