D.K. Pardianto1, B.R.
K.H. Choi2 and W. Park1*
Marine Biology, Pukyong National University, Busan-48513, Korea
Research Center, National Institute of Fisheries Science, Pohang-37709, Korea
Author Email :
Aim: The aim of this
study was to investigate the seasonal changes in distribution, composition
and abundance of zooplankton community in relation with hydrography such as
temperature and salinity in the East Sea.
Methodology: Seasonal changes
of zooplankton community were studied at 12 stations near Dokdo in the East
Sea. Zooplankton were seasonally sampled in 2011. Water temperature and
salinity were simultaneously measured at the zooplankton sampling sites.
Results: The mean surface
water temperature was highest in summer, lowest in winter and intermediate in
spring and fall. The mean surface water salinity was highest in winter and
spring, lowest in summer and intermediate in fall. Total 215 species
belonging to 65 families were identified. Zooplankton mean densities
gradually increased from winter to fall. Total species number was lowest in
winter and highest in summer. Copepods prevailed as dominant zooplankton
groups in all seasons. The mean densities of dominant zooplankton species
varied with seasons.
communities varied with season, particularly water masses were driven by
water currents as a main factor controlling zooplankton community
composition, abundance and distribution.
Key words: Dokdo, Hydrography, Seasonal changes, Zooplankton
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