Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Bloom of a green alga Bryopsis plumosa(Hudson) C. Agardh at Songji Beach, Haenam, Korea

한국 해남군 송지해변 녹조류 참깃털말 Bryopsis plumosa(Hudson) C. Agardh의 대량발생

  • Hyun Il Yoo (Aquatic Plant Variety Center, National Institute of Fisheries Science) ;
  • Ji Woong Lee (Seaweed Research Institute, National Institute of Fisheries Science) ;
  • So Mi Koh (Haenam Branch, JeollaNam-do Ocean & Fisheries Science Institute) ;
  • In Ho Kim (Haenam Branch, JeollaNam-do Ocean & Fisheries Science Institute) ;
  • Eun Kyoung Hwang (Seaweed Research Institute, National Institute of Fisheries Science)
  • 유현일 (국립수산과학원 수산식물품종관리센터) ;
  • 이지웅 (국립수산과학원 해조류연구소) ;
  • 고소미 (전라남도해양수산과학원 해남지원) ;
  • 김인호 (전라남도해양수산과학원 해남지원) ;
  • 황은경 (국립수산과학원 해조류연구소)
  • Received : 2024.02.20
  • Accepted : 2024.03.12
  • Published : 2024.03.31
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Abstract

The feathery branched green alga Bryopsis plumosa (Hudson) C. Agardh bloomed at Songji Beach, Haenam, Korea, in November 2022. A terrible stench was present on the beach, and the bottom was covered in a thick green mat of green algae. The alga was identified as B. plumosa, which is an opportunistic species currently distributed worldwide. Dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP) were analyzed in the bloomed area and compared with those of other vicinities. The DIN and DIP concentrations were 1.067 and 0.461 mg L-1, respectively, which were 6 to 19 times higher than the average concentrations on southwest coasts, including Haenam. The B. plumosa bloom at Songji Beach in November 2022 appears to have depended on DIN and DIP concentrations in seawater. In this study, we report on the mass occurrence of B. plumosa, which appeared for the first time in Korea. This occurrence was found to be closely related to the concentration of nutrients in seawater. Therefore, it is necessary to manage the concentration of nutrients on land flowing into coastal waters to control green algal blooms such as Bryopsis.

2022년 11월 전남 해남 송지해변에서 녹조류의 대량발생이 일어났다. 해변에서는 악취가 발생하였고, 녹조류가 녹색의 두꺼운 매트처럼 해변을 넓게 덮고 있었다. 종동정 결과는 범세계분포종인 녹조류 참깃털말로 나타났다. 참깃털말의 대량발생이 일어난 송지해변과 인근 지역의 해수 중 영양염 농도를 비교한 결과, 용존무기질소와 용존무기인 농도는 각각 1.067 및 0.461 mg L-1로 남서해안 평균 영양염에 비해 6배 및 19배 높게 나타났다. 이 연구에서는 국내에서 처음으로 나타난 참깃털말의 대량발생 양상에 대하여 보고하였으며, 이는 해수 중 영양염 농도와 밀접한 관계가 있는 것으로 나타났다. 따라서 참깃털말 등의 녹조류 대량발생을 제어하기 위해서는 연안으로 유입되는 육상의 영양염 농도에 대한 관리가 필요할 것으로 사료된다.

Keywords

Acknowledgement

이 연구는 국립수산과학원 연구비지원(R2024051)으로 수행되었습니다.

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