Temporal variation of benthic diatom assemblages in tidal flat of Geunso Bay, Korea

Title
Temporal variation of benthic diatom assemblages in tidal flat of Geunso Bay, Korea
Author(s)
안성민; 최동한; 이호원; 노재훈
KIOST Author(s)
Choi, Dong Han(최동한)Lee, Howon(이호원)Noh, Jae Hoon(노재훈)
Publication Year
2018-10-25
Abstract
Benthic diatoms are ubiquitous in tidal flats and play major roles in maintaining coastal ecosystems. We investigated the temporal variation of benthic diatom composition by MiSeq sequencing of rbcL gene in a total of 80 samples collected from May 2009 to May 2015 at tidal flat in Guenso Bay, Korea. In result of meta-barcoding, Navicula was the most abundant genus, followed by Nitzschia, Amphora, Sellaphora, and Entomoneis. The concentration of chlorophyll a in the study
area was high in winter and spring, and the relative frequency of Navicula and Ntizschia increased mainly during this period. On the other hand, the relative frequency of Amphora and Sellaphora was increased in summer with low chlorophyll a concentration. Major species in this study area were Navicula salinarum, Ntizschia bergii, Amphora sp., Halamphora montana. Of the 44 OTUs with a relative frequency of 5% or more, only 18 showed more than 98% similarity to the reference database. Based on the results of CCA analysis, it was confirmed that major factors affecting
the change of community structure of benthic diatoms in tidal flat were the grain size and sand ratio. In addition, we observed changes in community structure of benthic diatoms due to artificial changes in sediment particle size. The results from the study will establish a basis of benthic diatom dynamics and give us a more advanced way to monitor benthic diatoms that are essential to mrom May 2009 to May 2015 at tidal flat in Guenso Bay, Korea. In result of meta-barcoding, Navicula was the most abundant genus, followed by Nitzschia, Amphora, Sellaphora, and Entomoneis. The concentration of chlorophyll a in the study
area was high in winter and spring, and the relative frequency of Navicula and Ntizschia increased mainly during this period. On the other hand, the relative frequency of Amphora and Sellaphora was increased in summer with low chlorophyll a concentration. Major species in this study area were Navicula salinarum, Ntizschia bergii, Amphora sp., Halamphora montana. Of the 44 OTUs with a relative frequency of 5% or more, only 18 showed more than 98% similarity to the reference database. Based on the results of CCA analysis, it was confirmed that major factors affecting
the change of community structure of benthic diatoms in tidal flat were the grain size and sand ratio. In addition, we observed changes in community structure of benthic diatoms due to artificial changes in sediment particle size. The results from the study will establish a basis of benthic diatom dynamics and give us a more advanced way to monitor benthic diatoms that are essential to m
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23012
Bibliographic Citation
2018년도 한국해양학회 추계학술대회, 2018
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Phytoplankton ecology,Primary productivity modelling,Coral reef ecosystem study,식물플랑크톤 생태학,일차생산력 모델,산호초 생태계 연구

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