한국환경과학회지 (Journal of Environmental Science International)

  • 제20권11호
  • /
  • Pages.1383-1394
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  • 2011
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  • 1225-4517(pISSN)
  • /
  • 2287-3503(eISSN)
한국환경과학회 (The Korean Environmental Sciences Society)
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부유물질증가에 따른 저서성 해양생물의 독성평가에 관한 연구

Ecotoxicological Effects of the Increased Suspended Solids on Marine Benthic Organisms

  • 윤성진 (안양대학교 해양생명공학과) ;
  • 박경수 (안양대학교 해양생명공학과)
  • 투고 : 2011.01.03
  • 심사 : 2011.10.07
  • 발행 : 2011.11.30
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초록

Environmental impacts of suspended solids (SS) released in coastal area by dredging, reclamation and construction can cause serious damages to coastal habitats and benthic organisms. Acute toxicity tests (4-7 days) were conducted to identify the relationship between SS concentration and mortality of three marine benthic species; benthic copepod (Tigriopus japonicus) adult, Pacific abalone (Haliotis discus hannai) spat, and olive flounder (Paralichthys olivaceus) fry. Benthic copepod was the most sensitive to SS followed by olive flounder fry and Pacific abalone spat, with an $LC_{50}$ (lethal concentration of 50% mortality) value of 61.0 mg/L and LOEC (lowest observed effective concentration) value of 31.3 mg/L for benthic copepod. LOEC and 7 day-$LC_{50}$ for Pacific abalone spat were 500.0 mg/L and 1887.7 mg/L, and those for olive flounder fry were 125.0 mg/L and 156.9 mg/L, respectively. The tolerance limits of the test species to SS revealed the various concentration ranges of SS, which reflects the physiology and ecology of the test species. These results are very valuable for the determination of SS concentration of effluents released into the coastal area by dredging, reclamation and construction etc. Also, sharp increase of SS can cause long-term damages to the benthic and sessile fauna by blanketing of benthic substratum. These experimental procedures for marine bioassay and acute toxicity results can be a useful guideline for practical management planning of SS discharge into coastal area.

키워드

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피인용 문헌

  1. Review on the Biological Effects of Suspended Solids on Shellfish, Fish, and Seaweed vol.21, pp.1, 2015, https://doi.org/10.7837/kosomes.2015.21.1.109
  2. Stress Response of Flounder, Paralichthys olivaceus to Changes in Salinity, Temperature and Suspended Solid vol.30, pp.1, 2018, https://doi.org/10.13000/JFMSE.2018.02.30.1.354