Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Variations of Dissolved Inorganic Nutrient Flux through the Seomjin River Estuary

섬진강 하구를 통한 용존무기영양염 유출량 변동

  • Park, Mi-Ok (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Lee, Jae-Seong (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Kim, Seong-Soo (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Kim, Seong-Gil (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Lee, Suk-Mo (College of Ecological Engineering, Pukyong National University) ;
  • Lee, Yong-Woo (Marine Environment Monitoring Team, Korea Marine Environment Management Corporation)
  • 박미옥 (국립수산과학원 어장환경과) ;
  • 이재성 (국립수산과학원 어장환경과) ;
  • 김성수 (국립수산과학원 어장환경과) ;
  • 김성길 (국립수산과학원 어장환경과) ;
  • 이석모 (부경대학교 생태공학과) ;
  • 이용우 (해양환경관리공단 해양수질팀)
  • Received : 2013.10.15
  • Accepted : 2014.04.28
  • Published : 2014.06.30
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Abstract

We investigated the spatiotemporal variations of dissolved inorganic nutrients along a saline gradient to estimate nutrient fluxes in the Seomjin River estuary during dry (March 2005, March 2006, March 2007, and March 2008) and rainy seasons (August 2005, July 2006, July 2007, and July 2008). Dissolved inorganic nitrogen concentrations were similar in the endmembers of freshwater for the rainy and dry seasons. In contrast, the concentrations of dissolved inorganic phosphate and silicate in the rainy season were approximately 2-3 times higher than those in the dry season. River discharge was approximately 10 times higher in the rainy season ($212m^3sec^{-1}$) than in the dry season ($21m^3sec^{-1}$). The fluxes of dissolved inorganic nitrogen, phosphate, and silicate were 2.91, 0.004, and 2.51 tons $day^{-1}$ in the dry season and 7.45, 0.421, and 30.5 tons $day^{-1}$ in the rainy season, respectively. Although the range of nutrient concentrations were similar to previous results from investigations in the Seomjin River estuary, the nutrient fluxes were differed according to river discharge for different survey periods.

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References

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