Upo Wetland is the largest riverine wetland in Korea which has been inscribed on the Ramsar List of Wetlands of International Importance in 1998. In this study, sedimentological study was carried out in order to understand the environmental changes in Upo Wetland during the Holocene. The drilling work for recovering the Quaternary sediments was conducted on the inner part (UPW17-01, UPW17-02, and UPW17-03) and the outer part (UPL17-01, UPL17-02) of the Upo Wetland. The recovered sediments are commonly characterized by gravel-dominated deposits in the lower part and silty clay-dominated deposits in the middle to upper parts respectively, which are seemed to be changed from fluvial to palustrine/lacustrine environments around 4,000 cal yr BP. In order to establish the Holocene diatoms distribution from Upo Wetland, we identified 63 diatom taxa. Of these, 14 species were new records for Korea: Gomphonema consector, Gomphonema jadwigiae, Hantzschia abundans, Luticola pseudomurrayi, Luticola spauldingiae, Neidium suboblongum, Ninastrelnikovia gibbosa, Oricymba rhynchocephala, Pinnularia borealis var. lanceolata, Pinnularia latarea, Pinnularia paliobducta, Pinnularia saprophila, Sellaphora laevissima, Stauroneis pseudoschimanskii. All identified diatom species are illustrated by high-quality scanning electron microscopic and light microscopic microphotographs. The ecological habitat for all taxa are presented.

Abstract
서 론
재료 및 방법
    1. 연구지역 선정
    2. 연구 방법
결 과
    1. 퇴적상 분석 결과
    2. 탄소연대 분석 결과
    3. 입도 분석 결과
    4. 돌말류 분석 결과
고 찰
    1. 퇴적상 해석
    2. 돌말류 분포 특성
    3. 우포늪의 생성 연대 및 퇴적 환경 변화
REFERENCES

• 이호일(한국지질자원연구원 국토지질연구본부) | Hoil Lee (Geology Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
• 이상득(국립낙동강생물자원관 조류연구팀) | Sang Deuk Lee (Algal Research Team, Nakdonggang National Institute of Biological Resources (NNIBR)) Corresponding author
• 이진영(한국지질자원연구원 국토지질연구본부) | Jin-Young Lee (Geology Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
• 임재수(한국지질자원연구원 국토지질연구본부) | Jaesoo Lim (Geology Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
• 권대률(국립낙동강생물자원관 조류연구팀) | Daeryul Kwon (Algal Research Team, Nakdonggang National Institute of Biological Resources (NNIBR))
• 박미례(국립낙동강생물자원관 조류연구팀) | Mirye Park (Algal Research Team, Nakdonggang National Institute of Biological Resources (NNIBR))
• 윤석민(국립낙동강생물자원관 조류연구팀) | Suk Min Yun (Algal Research Team, Nakdonggang National Institute of Biological Resources (NNIBR))