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학술저널
저자정보
한사랑 (국립환경과학원 금강물환경연구소) 조기철 (국립환경과학원 금강물환경연구소) 윤조희 (국립환경과학원 금강물환경연구소) 이재정 (국립환경과학원 금강물환경연구소) 유순애 (배재대학교 생물학과) 최인찬 (국립환경과학원 금강물환경연구소) 주현지 (국립환경과학원 금강물환경연구소) 천세억 (국립환경과학원 금강물환경연구소) 임병진 (국립환경과학원 금강물환경연구소)
저널정보
한국수생태학회 생태와 환경 생태와 환경 제49권 제4호
발행연도
2016.1
수록면
375 - 384 (10page)

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Phytoplankton community is one of the important factors for the management of aquatic environment due to generation of varying toxins by harmful algal species. This study was performed to examine the phytoplankton community structure (PCS) in the midstream of Geum River (GR) from January 2014 to December 2015. The water sampling was performed in five stations on 2014, and three stations on 2015. Subsequently, the morphological identification was performed by microscopic observation in laboratory condition. As results, total 265 species were identified and it was comprised of 40.8% of Bacillariophyceae, 9.1% of Cyanophyceae, 44.5% of Chlorophyceae, and the others (4.9%). During the investigation period, total average standing crop of phytoplankton was $12,948cells\;mL^{-1}$, and it was comprised of $7,702cells\;mL^{-1}$ of Bacillariophyceae, $2,821cells\;mL^{-1}$ of Cyanophyceae, $2,121cells\;mL^{-1}$ of Chlorophyceae, and $305cells\;mL^{-1}$ of others. To verify which tributaries of upstream area influence on PCS of midstream of GR, the phytoplankton standing crops of two stations including Mihocheon (MH) and Gapcheon (GC) were examined on 2014, and compared to result of on 2015. The results were shown that the MH station had more similar phytoplankton standing crops with midstream of GR than GC station. The relationship between environmental parameters and phytoplankton dynamics was studied at the investigated station. As results, whereas water temperature and total phosphorus were represented the positive correlation, N/P ratio was remarkably exhibited negative correlation. From the results, it is suggested that the PCS of midstream of GR was more affected by MH station than GC station, and the changes of temperature, phosphorus concentration, and N/P ratio may be important factors on the PCS formation of midstream of GR.

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