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Original Articles

Effects of Different Processing Methods on Dinoflagellate Cyst Concentrations from Surface Sediments of Korean Coastal Area and the Northern East China Sea

퇴적물 시료 전처리 방법에 따른 와편모조류 시스트 분포 특성 비교

Kyong Ha Han12
,
Byeong-Jun Kang1
,
Ji Yeon Kim13
,
Ji Won Jeon13
,
Min Ho Seo4*
한 경하12
,
강 병준1
,
김 지연13
,
전 지원13
,
서 민호4*
1Library of Marine Samples, Korea Institute of Ocean Science and Technology
2Department of Environmental Science, Hanyang University
3Department of Ocean Science, University of Science and Technology
4Marine Ecology Research Center
1한국해양과학기술원 해양시료도서관
2한양대학교 환경과학과
3과학기술연합대학원대학교 해양과학전공
4바다생태연구소
*Corresponding Author
30 June 2024. pp. 11-19
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Abstract

To determine the dinoflagellate cyst concentration from surface sediments of Korean coastal area and northern East China Sea, the effects of two different processing methods (sieving and palynological methods) on concentration and composition of dinoflagellate cyst were examined. The number of species and concentrations of dinoflagellate cysts in sediment samples with the sieving method were relatively higher than those in sediment samples with the palynological method. In addition, dinoflagellate cyst assemblage in sediment samples with the sieving method was dominated by Thoracosphaera heimii that is calcareous cyst. This indicates that the palynological method can result in loss of cysts and decrease in cyst concentrations. Therefore, the sieving method can considered a viable alternative for determining the cyst concentrations from surface sediments of Korean coastal area and northern East China Sea.

Keywords
Calcagreous cyst
East China Sea
Palynological method
Sediment
Sieving method

본 연구는 표층퇴적물내의 와편모조류 시스트 분포를 분석하기 위한 적합한 방법을 확인하기 위해 palynological method와 sieving method를 비교하였다. Palynological method를 통하여 알아본 결과, 총 11속 15종의 와편모조류 시스트가 출현하였으며, 대부분 organic-walled 시스트로 나타났다. 전체 현존량은 110~1,565 cysts g-1 dry로 평균적으로 정점 당 546 cysts g-1 dry 나타났으며, Spiniferities spp.가 52.9%로 높은 우점율을 차지했다. Sieving method를 통하여 관찰하였을 때 출현한 종은 총 16속 20종이며, 현존량은 2,296~43,167 cysts g-1 dry로 정점 당 평균 14,808 cysts g-1 dry로 나타났으며, 우점율은 calcareous-walled 시스트인 Thoracosphaera heimii가 91.57%로 제 1우점종을 차지하였다. 이와 같은 결과는 palynological method에서 퇴적물내 유기물을 제거하기 위해 사용되는 산에 의해 CaCO3 성분의 외벽이 녹아 calcareous-welled 시스트의 형태가 변형 혹은 소실된 결과로 판단된다. 본 연구를 통해 표층퇴적물내 와편모조류 시스트의 다양성과 분포를 명확하게 하기 위해서는 palynological method보다는 sieving method가 더 적합함을 제안한다.

키워드
석회질 와편모조류 시스트
동중국해
퇴적물
Palynological method
Sieving method
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Information
  • Publisher :The Korean Society of Phycology
  • Publisher(Ko) :한국조류학회
  • Journal Title :Aquatic Nature
  • Journal Title(Ko) :수생생물
  • Volume : 4
  • No :1
  • Pages :11-19
  • Received Date : 2024-06-12
  • Revised Date : 2024-06-18
  • Accepted Date : 2024-06-18
  • DOI :https://doi.org/10.23135/an.2024.4.1.2
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