Seasonal Changes of Zooplankton Distribution with Environmental Factors in Lake Jinyang

진양호 환경요인과 동물플랑크톤 군집 동태

  • Yoon, Jong-Su (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Jeong, Hyun-Gi (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Kwon, Young-Ho (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Shin, Chan-Ki (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Hwang, Dong-Jin (Nakdong River Environment Research Center National Institute of Environmental Research)
  • 윤종수 (국립환경과학원 낙동강물환경연구소) ;
  • 정현기 (국립환경과학원 낙동강물환경연구소) ;
  • 권영호 (국립환경과학원 낙동강물환경연구소) ;
  • 신찬기 (국립환경과학원 낙동강물환경연구소) ;
  • 황동진 (국립환경과학원 낙동강물환경연구소)
  • Published : 2008.12.31

Abstract

Our study indicates the zooplankton abundance with characteristics of water column and the vertical distribution in Lake Jinyang, South Korea. Seasonal changes of zooplankton community are determined by environmental parameters like water temperature, pH, dissolved oxygen, suspended solids and chlorophyll a. In lake Jinyang, this study showed that the zooplankton abundance in transition zone(St.1, St.2) was higher density than in lacustrine zone(St.3). Rotifers were dominant zooplankton and among them, Polyarthra spp., Keratella spp. and Nauplli(Copepoda) were common. But Cladoceran showed the low density. During survey period, zooplankton abundance with vertical distribution in surface layer(epilimnion) was higher than in bottom layer(hypolimninon). Zooplankton densities in Surface and middle layer showed positive relationship with water temperature and the densities in bottom layer(hypolimnion) showed positive relationship with chlorophyll a. Our assumption in spite of the short term study are supported by the facts that increase of temperature driven by climate change more maintains the thermocline duration by the summer temperature stratification. Thus the results suggest that the climate changes are an important source of changing zooplankton community feeding phytoplankton. So the zooplankton should be monitoring by the ecological management of Lake Jinyang to cope with climate changes like flood plain or drought.

Keywords

References

  1. Hunter, M.D and Price, P.W. : Playing chutes and laders: Heterogenetic and the relative roles of bottom-up and top down forces in natural communities. Ecology, 73, 724-732, 1992
  2. Large, A.R.G and Petts, G.E. : Historical channer-floodplain dynamics along the river Trent - Implications for river rehabilitation. Geography, Volume 16(3), 191-209(19), 1996 https://doi.org/10.1016/0143-6228(96)00004-5
  3. 국토해양부, 한국수자원관리종합정보홈페이지, 2008
  4. 환경부, 수질오염공정시험법, 2007
  5. Prepas, E. : Sugar-frosted Daphnia: An improved fixation technique for Cladocera. Limnol. Oceanogr., 557-559, 1978
  6. 김호섭, 김범철, 최은미, 황순진 : 부영양 호수에서 남조류 bloom이 동물플랑크톤 군집 변화에 미치는 영향, 한국하천 호수학회. 33(4); 366-373, 2000
  7. Calaban, M. J. and Makarewicz, J. C.: The effect of temperature and density on the amplitude of vertical migration of Daphnia magna. Limnol. Oceanogr., 27: 262-271, 1982 https://doi.org/10.4319/lo.1982.27.2.0262
  8. Dagg, M. J. : The effects of food limitation on diel migratory behavior in marine zooplankton. Ergeb. Limnol. 21, 247-255, 1985 https://doi.org/10.1051/limn/1985025
  9. 김호섭, 황순진, 공동수, : 부영양 저수지에서 남조류의 발달과 천이 및 영향 요인, 한국하천 호수학회. 40(1):1221-129, 2007
  10. Fulton and Paerl : Toxic and inhibitory effects of the blue-green alga Microcystics aeruginosa in herbivorous zooplankton. J. Plankton Res. 9:837-855, 1987 https://doi.org/10.1093/plankt/9.5.837
  11. Sanders, R.W. and Wickham, S.A. : Planktonic protozoa and metazoa:predation, food quality and population control. Mar. Microbiol. Food Webs, 7:197-223, 1993
  12. Smirnov, N. N. and Timms, B. V. : A revision of the Australian Cladocera (Crustacea). Records of the Australian Museum Supplement, 1: 1-132, 1983 https://doi.org/10.3853/j.0812-7387.1.1983.103
  13. Carrick, H.J., Fahnentiel ,G.L., Taylor, W.D. : Growth and production of plankton protozoa in lake Michigan-in situ versus in vitro comparison and importance to food web dynamics. Limnol. Oceanogr., 37, 1221-1235, 1992 https://doi.org/10.4319/lo.1992.37.6.1221
  14. Lampert, W. and Sommer, U. : Limnology-The Ecology of Lake and Streams. Oxford University Press, Oxford, 1997