Authors
Info
J.Y. Lee1, W. Park2*,
S.Y. Moon3 and H.K.Cha4 ?
1Northwest Pacific
Action Plan Marine Environmental Emergency Preparedness and Response Regional
Activity Center (NOWPAP MERRAC), Korea Research Institute of Ships &
Ocean Engineering (KRISO), Daejeon, 34103, Korea
2Department of
Marine Biology, Pukyong National University, Busan, 48513, Korea
3Fisheries Resource
Survey Center, National Institute of Fisheries Science, Tongyoung, 53063,
Korea
4National Institute
of Fisheries Science, Busan, 46083, Korea
*Corresponding
Author Email :
wpark@pknu.ac.kr
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Abstract
Aim: Zooplankton are
distributed by hydrographic factors such as temperature and salinity. The
research aims to investigate the distribution patterns of zooplankton and
indicator species of water bodies, and to understand the relationship between
zooplankton distribution and water bodies in Korean waters in winter.
Methodology: Zooplankton,
samples were collected and temperatures and salinities were recorded at 130
stations around Korean peninsula in the Yellow Sea and the northern East
China Sea (ECS), using a Bongo net and CTD in winter, 2016. Research areas
using K-mean clustering based on temperatures and salinities were divided
into six water bodies:the North Korea Cold Current (NKCC), the East Korea
Warm Current (EKWC), the Jeju Warm Current (JWC), the Yellow Sea Warm Current
(YSWC), the Yellow Sea (Y1), and mixed water. The indicator indices for water
bodies were calculated using INSPAN (Indicator Species Analysis).
Results: NKCC, YSWC and Y1
were represented by high proportions of cold water species of 81, 44 and 41
species, respectively, while EKWC and JWC were relatively dominated by warm
water species of 99 and 102 species. The water bodies of Yellow Sea and the
northern ECS were greatly similar, but the East/Japan Sea was significantly
distinguished. With the Indicator value and distribution, indicator species
for water bodies were identified: Scolecithricella minorin the NKCC, Candacia
bipinnata, Clausocalanus furcatus, and Pleuromamma gracilisin
the EKWC, Scolecithricella longispinosa and Euchaeta plana in
the JWC, Centropages abdominalis in the Y1.
Interpretation: Distributions of
zooplanktons and the similarity of community structures were determined by
the interaction of water bodies. Zooplankton species can be used as indicator
of water bodies because of their dependence on ocean currents.
Key words: East Sea, Indicator species analysis, Zooplankton
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