Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Spatial distribution of Acartia(Copepoda, Calanoida) species in the southern coastal waters of Korea during summer

하계 남해연안에 출현하는 Acartia속 요각류의 공간 분포

  • 최서열 (전남대학교 해양기술학부) ;
  • 서민호 (바다생태연구소) ;
  • 신경순 (한국해양과학기술원 남해연구소) ;
  • 장민철 (한국해양과학기술원 남해연구소) ;
  • 서호영 (전남대학교 해양기술학부)
  • Received : 2019.03.07
  • Accepted : 2019.08.23
  • Published : 2019.09.30
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Abstract

The occurrence patterns of Acartia(Copepoda; Calanoida) species, A. erythraea, A. hongi, A. hudsonica, A. ohtsukai, and A. sinjiensis, were examined in the southern coastal waters of Korea in the summer in August 2012. The Acartia species had different spatial distribution according to environmental factors. A. erythraea showed higher density in a semi-closed bay (Gamak, Masan) where the dissolved oxygen was low (<2 mg L-1). A. sinjiensis showed a high density in a semi-closed bay when the chlorophyll-a concentration was >2 ㎍ L-1. A. ohtsukai showed a high density at water temperatures >26℃ and low salinity <30. A. hongi and A. hudsonica showed at water temperatures <27℃ and high dissolved oxygen (>5 mg L-1). These results suggest that environmental factors (temperature, salinity, dissolved oxygen, and chlorophyll-a concentration) may affect the spatial distribution of Acartia species dominant in the southern coasts of Korea in summer.

2012년 8월 1일부터 7일까지 한국 남해 연안의 목포에서 부산에 이르는 37개의 정점에서 채집된 Acartia속 요각류의 공간 분포 양상에 대하여 분석하였다. A. erythraea는 용존산소가 2 mg L-1 이하인 반 폐쇄적인(가막만, 마산만)만에서 높은 출현 개체수를 보였다. A. sinjiensis는 엽록소-a 농도가 2 ㎍ L-1 이상인 반 폐쇄적인 만에서 높은 출현 개체수를 보였다. A. ohtsukai는 수온 26℃ 이상, 염분 30 이하일 때 높은 출현 개체수를 보였다. A. hongi, A. hudsonica는 수온이 27℃ 이하, 용존산소 5 mg L-1 이상인 해역에서 출현하였다. 이러한 결과 환경요인이 여름철 남해 연안에 출현하는 Acartia속 요각류의 공간적 분포에 영향을 미칠 수 있음을 시사하고 있다.

Keywords

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