여수 연안해역에서 침편모조류 Chattonella속 출현환경 및 영양염에 대한 성장특성 KCI

Title
여수 연안해역에서 침편모조류 Chattonella속 출현환경 및 영양염에 대한 성장특성
Alternative Title
The Effect of Environmental Factors on the Advent of Chattonella (Raphidophyceae) in Yeosu Coastal Waters, Korea, and the Effect of Nutrients on the Growth of Chattonella
Author(s)
노일현; 오석진; 신현호; 강인석; 윤양호
KIOST Author(s)
Shin, Hyeon Ho(신현호)
Publication Year
2010-08
Abstract
In order to understand what leads to the appearance of harmful Chattonella algae in the Yeosu coastal waters of Korea, we measured environmental parameters every week at one station from May to November, 2006, and April to October, 2007. Four species of Chattonella appeared during the monitoring period: C. antiqua, C. globosa, C. marina and C. ovata. The range of water temperature and salinity were 15.0-27.9℃ and 17.6~33.0 psu, respectively, when Chattonella appeared, and their maximum cell density (4,840 cells/L) was at 27.1℃ and 33.0 psu. During the monitoring periods, the range of dissolved inorganic nitrogen (DIN), phosphate (DIP) and chlorophyll a (Chl-a) concentrations in surface waters were 1.20-52.23 μM (8.59±8.97 μM), 0.03-1.56 μM (0.47±0.31 μM) and 0.45-31.12 μg/L (3.58±4.77 μg/L), respectively. Chattonella occurred at low cell density when the Chl-a concentration increased because of supplied nutrients, whereas their cell density increased during the periods of rapid decrease in Chl-a. The results of growth experiments based on batch culture showed that the half saturation constant (Ks) of C. antiqua on ammonium (NH4-), nitrate (NO3-) and phosphate (PO42-) were 3.89 μM, 5.01 μM and 0.63 μM, respectively. These Ks values are higher than those reported for diatoms and other flagellates at the DIP concentration (average 0.47 μM) of Yeosu coastal waters. Although the maximum specific growth rate (μmax) of C. antiqua was lower than diatoms, it was higher than those of other flagellates. Therefore, our results indicate that the DIP level in the study area was too low to support Chattonella blooms, although Chattonella species have physiological characteristics that enable them to grow more rapidly than other flagellates when nutrient levels are higher than their Ks.
ISSN
0374-8111
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4052
Bibliographic Citation
한국수산과학회지, v.43, no.4, pp.362 - 372, 2010
Publisher
한국수산과학회
Keywords
Chattonella; Nutrient; Half saturation constant; Maximum specific growth rate; Yeosu coastal water
Type
Article
Language
Korean
Publisher
한국수산과학회
Related Researcher
Research Interests

Marine bioresource,Marine phytoplankton diversity / ecology,Marine micropaleontology,해양생물자원,해양식물플랑크톤 다양성/생태학,해양미고생물학

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