Dynamics of the phytoplankton community in the Bering Strait and Chukchi Sea by latitudinal variations in late summer as revealed by18S metabarcoding

Title
Dynamics of the phytoplankton community in the Bering Strait and Chukchi Sea by latitudinal variations in late summer as revealed by18S metabarcoding
Author(s)
주형민; 김강은; 김현정; 조경호; 이영주; 박준상; 양은진; 강성호; 정승원
KIOST Author(s)
Kim, Kangeun(김강은)Kim, Hyun Jung(김현정)Park, Joon Sang(박준상)Jung, Seung Won(정승원)
Alternative Author(s)
김강은; 김현정; 박준상; 정승원
Publication Year
2021-05-14
Abstract
Limited information is available regarding the phytoplankton communities in the Arctic Ocean, especially, Chukchi Sea. Therefore, we conducted a research cruise from the Bering Strait to the Chukchi Sea in August 2016, and used 18S ribosomal DNA metabarcoding to examine the changes in phytoplankton dynamics in the Arctic Ocean water mass. The Bering Strait had high water temperature and salinity in the surface layer. However, the temperature of Chukchi Sea was below 0°C between the surface and sub-surface chlorophyll maximum (SCM) layers, and its salinity was clearly distinguishable. The phytoplankton community was classified into three groups at 60% similarity. Group I was associated with “high temperature in the surface layer of the Bering Strait and southern Chukchi Sea,” and mainly comprised Dinoflagellates (71%) and Heterocapsa rotundata as the predominant taxa. Group II was associated with “low temperature in the SCM layer between the Bering Strait and the Chukchi Sea,” comprising Bacillariophytes (51%) and Dinoflagellates (47%) as the major groups. Group III was associated with “Chukchi Sea characteristics affected by the ice-melting process” and comprised Chlorophytes (45%), Micromonas polaris, and Bathycoccus prasinos as the predominant taxa. Overall, our results indicate that phytoplankton community structures are highly dependent on each different water mass types and are expected to shift dramatically based on seasonal and climate change effects.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41438
Bibliographic Citation
2021년도 한국해양과학기술협의회 공동학술대회(한국해양학회), pp.1471, 2021
Publisher
한국해양과학기술협의회
Type
Conference
Language
Korean
Publisher
한국해양과학기술협의회
Related Researcher
Research Interests

Marine biology,Taxonomy,Diatom,해양생물학,생물분류학,규조류

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