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ISSN : 2288-1115(Print)
ISSN : 2288-1123(Online)
Korean Journal of Ecology and Environment Vol.45 No.2 pp.139-149

섬진강 하구역의 계절별 일차생산력 및 식물플랑크톤 색소 조성 변화

민준오, 하선용, 정미희1, 최보형, 이연정, 윤석현1, 윤원득1, 이재성1, 신경훈*
한양대학교 해양환경과학과, 1국립수산과학원

Seasonal Variation of Primary Productivity and Pigment of Phytoplankton Community Structure in the Seomjin Estuary.

Kyung Hoon Shin*, Min, Jun Oh, Sun Yong Ha, Mi Hee Chung1, Bo Hyung Choi, Yeon Jung Lee, Seok Hyun Youn1, Won Duk Yoon1, Jae Seong Lee1
Environmental Marine Sciences Hanyang University, An-San 425-791, Korea, 1National Fisheries Research & Development Institute, Busan, Korea
(Manuscript received 23 November 2011, Revised 22 December 2011 Revision accepted 30 May 2012)


Four in situ incubation experiments were conducted in May, August and November2009, as well as February 2010 to determine the seasonal primary productivity andthe community structure of phytoplankton at the Seomjin estuary. The primary productionof phytoplankton ranged from 9 to 3560 mgC m-2 d-1. Primary productivitywas the highest in the summer season (August), which was influenced by improvedoptical and temperature conditions of the water, as well as the supply of nutrientsderived from its surrounding watershed. Particularly, the upper station (SJ-1, SJ-2)of Seom-jin estuary showed a higher productivity, as a result of inflow of input nutrientsoriginated from the terrestrial source. The fucoxanthin, as an index pigment ofdiatoms showed the highest concentration (0.74~9.51 μg L-1) at all stations, occupying30~80% to total Chl a concentrations. The phytoplankton species compositiondetermination, using a microscope showed similar results to the pigment analysis,which indicated diatom Skeletonema costatum, as the dominant species. The primaryproductivity in Seom-jin estuary indicates temporally and spatially large variation,according to different environmental conditions. Also, Skeletonema costatum haseuryhaline features with relatively higher contribution.


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