반폐쇄적 내만 광양만에서 종속영양적조생물 야광충의 수문학적 및 생태학적 특성 KCI OTHER

Title
반폐쇄적 내만 광양만에서 종속영양적조생물 야광충의 수문학적 및 생태학적 특성
Alternative Title
Hydrographical and Bio-ecological Characteristics of Heterotrophic Red Tide Dinoflagellate Noctiluca scintillans in Semi-enclosed Gwangyang Bay, Korea
Author(s)
백승호; 김동선; 최현우; 김영옥
KIOST Author(s)
Baek, Seung Ho(백승호)Kim, Dongseon(김동선)Choi, Hyun Woo(최현우)Kim, Young Ok(김영옥)
Publication Year
2013-12
Abstract
In order to understand the population dynamics of red tide dinoflagellate Noctiluca scintillans, we examined its hydrographical and bio-ecological characteristics at 19 to 20 stations of Gwangyang Bay during all four seasons from 2010 to 2012. During the 3-year period, N. scintillans was seasonally abundant during summer with water temperatures ranging from 15˚C to 22˚C and salinity ranging from 25 psu to 30 psu. On the other hand, N. scintillans population density significantly decreased in spring, fall and winter, although they were present even in lower temperatures (<4˚C). However, high water temperature (>27˚C) and low salinity (<12 psu) led to the disappearance of N. scintillans population. Chl-a concentration in winter, spring and fall was positively correlated with N. scintillans population density, whereas the N. scintillans population was negatively correlated with Chl-a concentration in summer. This implies that densities of prey population such as diatoms are one of important contributing factor for maintaining abundance of N. scintillans in winter, spring and fall and for increasing abundance of N. scintillans in summer. During summer season, bio-accumulation of N. scintillans population by the wind from southwest is also considered to be a key factor in triggering the formation of large-scale blooms in Gwangyang Bay.
ISSN
1226-9999
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1639
Bibliographic Citation
환경생물, v.31, no.4, pp.308 - 321, 2013
Publisher
한국환경생물학회
Keywords
temperature; salinity; wind speed and direction; chlorophyll a; N. scintillans; Gwangyang Bay
Type
Article
Language
Korean
Publisher
한국환경생물학회
Related Researcher
Research Interests

Marine ecology,Plankton,Protists,해양생태,부유생물,원생생물

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