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Ocean Science Journal

, Volume 43, Issue 3, pp 135–146 | Cite as

Distribution pattern of zooplankton in the han river estuary with respect to tidal cycle

  • Seok-Hyun Youn
  • Joong-Ki Choi
Article

Abstract

The monthly distribution of zooplankton communities in Han River estuary was investigated at two stations from July 1998 to June 1999. Monthly mean abundance of total zooplankton varied remarkably, with the range from 20 indiv.·m-3 to 19,600 indiv.·m-3. During the study period, dominant species of zooplankton community were dinoflagellateNoctiluca scintillans, copepodsParacalanus indicus, Paracaanus crassirostris, Acartia hongi, Acartia ohtsukai, and meroplanton cirriped larvae. According to tidal states, relative high abundance occurred at high tide without regard to season. The temporal distribution of abundance implied that the reduced salinity probably limited the zooplankton populations and the fluctuations of salinity were an important factor in the variation of abundance. However, the results of salinity tolerance test shows that the variations in salinity do not directly influence the decrease of abundance. This study shows that the relatively high abundance of zooplankton near high tide seems to be related with the expansion of abundant zooplankton inhabiting Incheon coastal waters through tidal currents.

Key words

zooplankton Han River estuary tidal cycle salinity 

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Copyright information

© Korea Ocean Research and Development Institute(KORDI) and the Korean Society of Oceanography(KSO) 2008

Authors and Affiliations

  1. 1.Environment Research Division, East Sea Fisheries Research InstituteNFRDIGangneungKorea
  2. 2.Department of OceanographyInha UniversityIncheonKorea

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