Seasonal dynamics of phytoplankton and environmental factors around the Chagwi-do off the west coast of Jeju Island, Korea SCOPUS KCI

Title
Seasonal dynamics of phytoplankton and environmental factors around the Chagwi-do off the west coast of Jeju Island, Korea
Author(s)
Affan, A.; Lee, J.-B.; Kim, J.-T.; Choi, Y.-C.; Kim, J.-M.; Myoung, J.-G.
KIOST Author(s)
Myoung, Jung Goo(명정구)
Publication Year
2007
Abstract
The dynamics of phytoplankton abundance with seasonal variation in physicochemical conditions were investigated monthly at 10 stations around the Chagwi-do off the west coast of Jeju Island, Korea, including inshore, middle shore, and offshore in the marine ranching area from September 2004 to November 2005. Water temperature varied from 12.1 to 28.9°C (average 18.8°C), and salinity from 28.9 to 34.9 psu (average 33.7 psu). The chlorophyll α concentration was 0.02-2.05 μg L-1 (average 0.70 μg L-1), and the maximum concentration occurred in the bottom layer in April. A total of 294 phytoplankton species belonging to 10 families was identified: 182 Bacillariophyceae, 52 Dinophyceae, 9 Chlorophyceae, 12 Cryptophyceae, 6 Chrysophyceae, 4 Dictyophyceae, 13 Euglenophyceae, 6 Prymnesiophyceae, 5 Prasinophyceae, and 5 Raphidophyceae. The standing crop was 2.21-48.69 × 104 cells L-1 (average 9.23 × 104 cells L-1), and the maximum occurred in the bottom layer in April. Diatoms were most abundant throughout the year, followed by dinoflagellates and phytoflagellates. A phytoplankton bloom occurred twice: once in spring, peaking in April, and once in autumn, peaking in November. The spring bloom was represented by four Chaetoceros species and Skeletonema costatum; each contributed 10-20% of the total phytoplankton abundance. The autumn bloom comprised dinoflagellates, diatoms, and phytoflagellates, of which dinoflagellates were predominant. Gymnodinium conicum, Prorocentrum micans, and P. triestinum each contributed over 10% of the total phytoplankton abundance.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4778
DOI
10.1007/BF03020879
Bibliographic Citation
Ocean Science Journal, v.42, no.2, pp.117 - 127, 2007
Publisher
Korea Ocean Research and Development Institute
Subject
abundance; chlorophyll a; diatom; dinoflagellate; environmental factor; identification key; phytoplankton; population structure; seasonal variation; species occurrence; temperature effect; water temperature; Asia; Cheju [Cheju (PRV/ISL)]; Cheju [South Korea]; Eurasia; Far East; Korea; South Korea; Bacillariophyceae; Bacillariophyta; Chaetoceros; Chlorophyceae; Chrysophyceae; Cryptophyta; Dinophyceae; Euglenida; Gymnodinium conicum; Haptophyceae; Phytomastigophorea; Prasinophyceae; Prorocentrum micans; Raphidophyceae; Skeletonema costatum
Keywords
Environmental factor; Jeju Island; Marine ranching; Phytoplankton; Seasonal dynamics
Type
Article
Language
English
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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