Distribution of Mesozooplankton during Spring and Autumn across the Frontal Zone of South Sea, Korea SCIE SCOPUS KCI

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Title
Distribution of Mesozooplankton during Spring and Autumn across the Frontal Zone of South Sea, Korea
Author(s)
Kim, Minju; Kang, Jung-Hoon; Kim, Garam; Kang, Hyung-Ku; Noh, Jae Hoon
KIOST Author(s)
Kim, Minju(김민주)Kang, Jung Hoon(강정훈)Kim, Garam(김가람)Kang, Hyung Ku(강형구)Noh, Jae Hoon(노재훈)
Publication Year
2019-06
Abstract
We investigated the distributional pattern of mesozooplankton and the related environmental characteristics across the frontal zone in the South Sea of Korea during spring and autumn 2016. The frontal zone (FZ) was formed by Korean Southern Coastal Waters and Tsushima Warm Current, and the physical structure of front was more distinct during autumn than spring. The peaks of mesozooplankton abundance were not coincident (p > 0.05) with peaks of integrated chlorophyll-a (chl-a) concentrations (spring: chl-a = 44.5 mg m(-2) at FZ, mesozooplankton = 8,198 inds.m(-3) at coastal zone (CZ); autumn: chl-a=141.2 mg m(-2) at CZ, mesozooplankton = 5,412 inds.m(-3) at FZ). Cluster analysis divided the mesozooplankton community into FZ, CZ and offshore zone (OZ) mainly by the dominant copepods (adult and immature) during both seasons that was associated with chl-a based on principal component analysis. All the zones were characterized by temporal difference in occurrence of copepods, which can be explained by the cyclopoid-to-calanoid (Cy:Ca) ratio. Cy:Ca ratio was dependent mainly on the co-occurrence of higher concentrations of chl-a and cyclopoids at each zone between spring and autumn. Paracalanus copepodites dominated at all stations across the FZ during both periods. Cy:Ca ratio at FZ in spring showed a distinctively higher value than that of CZ and OZ, whereas the pattern was the opposite in autumn. These results indicated that the temporal distribution of mesozooplankton across the frontal zone in the South Sea was mainly characterized by the zonal characteristics of FZ, unlike CZ and OZ, and was the result of temporal differences in chl-a concentrations and the associated increase of cyclopoid copepods (Oithona spp.).
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/612
DOI
10.1007/s12601-019-0008-8
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.54, no.2, pp.229 - 243, 2019
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Subject
ZOOPLANKTON POPULATIONS; VERTICAL DISTRIBUTIONS; PHYSICAL STRUCTURE; OITHONA-SIMILIS; PHYTOPLANKTON; ASSEMBLAGES; SURFACE; BAY
Keywords
mesozooplankton; distribution; copepods; frontal zone; south sea
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Related Researcher
Research Interests

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

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