Journal of Environmental Biology

Synchronicity of climate driven regime shifts among the East Asian marginal sea waters and major fish species

Paper received:? 11.01.2019??????????????????????????????????????????????????????????? Revised received:? 25.03.2019???????????????????????????????????????????????????????????? Accepted: 30.04.2019

Authors Info

S.M.M. Rahman¹, H.K. Jung²,

H.J. Park², J.M.Park³ and

C.I. Lee²* ??

¹Research Institute for Dok-do andUlleung-do, Kyungpook National University, Daegu, 41566, Republic of Korea

²Departmentof Marine Bioscience, College of Life Science, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea

³Dokdo Research Center, East Sea Research Institute, Korea Institute of Ocean Science & Technology, Uljin, 36315, Republic of Korea

*Corresponding Author Email :

leeci@gwnu.ac.kr

Abstract

Aim: Climate regime shift in 1976/77, 1988/89 and 1998 were well detected in different East Asian marginal sea ecosystems. However, information about synchronous pattern of these regime shifts among the ecosystems is limited.

Methodology: In this study, synchronicity of regime shifts among major climate patterns was examined in north Pacific, sea water temperatures, and major fish species in north East/Japan Sea, south East/Japan Sea, East China Sea and Yellow Sea .

Results: Results suggest that 1976/77 climate regime shift was marked for a long duration period (1970-1979) among climate indices and sea water temperature. Early positive shifts were detected in sea water temperature of East China Sea (1970) and Yellow Sea (1972). Early positive shifts were detected in walleye pollock, Japanese anchovy and hairtail. In 1988/89 CRS, most climate patterns were shifted within very short time (1987-1989). Positive shifts of sea water temperature in East Asian marginal sea were detected within very short time (1985-1989). Japanese sardine (1983) and walleye pollock (1985) collapsed early. All climate patterns were shifted earlier in 1998 climate regime shift period. Abrupt negative shift was detected in sea water temperature of south East / Japan Sea (1999) and East China Sea (2002).   

Interpretation: This study will help to project the future scenario of these East Asian marginal sea ecosystems under upcoming climate regime shift in North Pacific.

Key words: Climate regime shift, East Asian marginal sea, Fish species, Seawater temperature, Synchronicity

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