퇴적물 시료 전처리 방법에 따른 와편모조류 시스트 분포 특성 비교 = Effects of Different Processing Methods on Dinoflagellate Cyst Concentrations from Surface Sediments of Korean Coastal Area and the Northern East China Sea

국문 초록 (Abstract)

본 연구는 표층퇴적물내의 와편모조류 시스트 분포를 분석하기 위한 적합한 방법을 확인하기 위해 palynological method와sieving 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 시스트인Thoracosphaera heimii가 91.57%로 제 1우점종을 차지하였다. 이와 같은 결과는 palynological method에서 퇴적물내 유기물을제거하기 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 method보다는sieving method가 더 적합함을 제안한다.

다국어 초록 (Multilingual 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 Copyright © 2024 The Korean Society of Phycology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
수생생물Aquatic Nature 2024 June, 4(1): 11-19 pISSN 2765-7876 eISSN 2799-3000 https://doi.org/10.23135/an.2024.4.1.2 12 ∙ 수생생물 제4권 제1호 (2024) 한경하 외of 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.

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