수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)

  • 제58권3호
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  • Pages.281-287
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  • 2022
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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2003-2020년 5월 한국 동해안 밍크고래(Balaenoptera acutorostrata) 분포와 위성 표층수온과의 공간적 관계

Spatial relationship between distribution of common minke whale (Balaenoptera acutorostrata) and satellite sea surface temperature observed in the East Sea, Korea in May from 2003 to 2020

  • ;
  • 유준택 (국립수산과학원 고래연구센터)
  • YAMADA, Keiko (Major in Global Environment, College of Natural Sciences, Keimyung University) ;
  • YOO, Joon-Taek (Cetacean Research Institute, National Institute of Fisheries Science)
  • 투고 : 2022.07.11
  • 심사 : 2022.08.05
  • 발행 : 2022.08.31
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초록

The distributions of common minke whales observed in the East Sea in ten surveys in May of 2003, 2005, 2006, 2007, 2009, 2010, 2012, 2015, 2016 and 2020 were investigated using satellite sea surface temperature (SST) derived from the Moderate Resolution Imaging Spectrometer (MODIS). Most of the minke whales were observed in the waters off the Korean Peninsula at 36-38.5° N, which is expected as the highly productive coastal upwelling area. Yet, no minke whale was observed in 2006 when a relatively larger scale coastal upwelling occurred with SST at 11℃. In 2016 and 2020, the warm water higher than 17℃ extended widely in the area, and the minke whales were observed in the offshore waters, deeper than 1,000 m. 87.5% of minke whales observed in May appeared in the SST from 13 to 16℃, and they seemed to avoid relatively high temperatures. This suggests that optimum habitat water temperature of minke whales in May is 13-16℃. The SST in the area had risen 1.67℃ from 2003 to 2021, and it was remarkably higher than in other parts of the surrounding areas. The future temperature rising may change the route and timing of the migration of minke whales in the study area.

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과제정보

본 연구는 2022년도 국립수산과학원 수산과학연구사업(R2022033)의 지원으로 수행되었습니다.

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