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The aim of this study was to examine the fluctuation in phytoplankton assemblages with regarding to environmental conditions and nutrients, which were surveyed quarterly over the fours seasons (February, May, July, and October). In turn, an understanding of biological effects should provide insights into a wide range of initiated Cochlodinium blooms in Narodo. Sampling was carried out throughout 2001 on the coasts of Busan (St. 1), Yeosu (St. 2), Narodo (St. 3), Kohung (St. 4), and Kwangdo (St. 5). The maximum surface water temperature was recorded in July, and it ranged from 20 to 22℃. Salinity showed no great variation, which maintained itself in the range of 29-34 psu. The maximum surface salinity was recorded in February, which was about 34 psu. The chlorophyll a concentration of the surface water ranged from 0.01 to 1.3 ㎍ l^(-1). The concentrations of NH₄-N were persistently high from February to October; in particular, the peak was observed at St. 1 in February and May (0.15 and 0.19 μ㏖ l^(-1), respectively), while it was detected at St. 2 in July and October (0.22 and 2.2 μ㏖ l^(-1), respectively). Similar trends to those for NH4-N were observed in the concentrations of NO₂-N and NO₃-N. In contrast to nitrogen, a distinct peak of PO₄-P at St. 3, 4, and 5 was observed throughout year (0.01～0.1 μ㏖ l^(-1)), except for October. At St. 1 encounter a peak of cell number of 30,000 and 13×10³cells l^(-1), respectively, in July and October. During the period of this study, the majority of the taxa were diatoms. The dinoflagellates were rather abundant after February, in particular at St. 3, 4, and 5 which attained an abundance of 10~20% without marked fluctuation during the period of this study. At St. 3, the highest average cell width, 178.11 ㎛, was recorded: the highest cell length, 337.72 ㎛, was measured in July. Consequently, dinoflagellates bloom in July at Narodo influenced by warm water current are not only associated with a desirable development of cell morphometric characteristics, but also with the health growth of C. polykrikoides. During the period of this study, warm water currents caused an increased water temperature in Narodo, but did not change the amount of nutrients.
목차
Abstract
재료 및 방법
결과 및 고찰
요약
감사의 글
참고문헌
참고문헌 (16)
참고문헌 신청
Cembella, A. D., N. J. Antia and P. J. Harrison. 1984. The utilization of inorganic and organic phosphorous compounds as nutrients by eukaryotic microalgae: A multidisciplinary perspective. Rev. Microbiol. 10, 317-391.
Ellegaard, M., N. F. Christensen and O. Moestrup. 1993. Temperature and salinity effects on growth of a non-chainorming strain of Gymnodinium catenatum (Dinophyceae) established from a cyst from recent sedients in the Sound, Denmark. J. Phycol. 29, 418-42
Hallegraeff, G. M. 1993. A review of harmful algal blooms and their apparent global increase. Phycologia 32, 79-99.
Kang, Y. S., H. G. Kim, W. A. Lim, C. K. Lee, S. G. Lee and S. Y. Kim. 2002. An unusual coastal environment and Cochlodinium polykrikoides blooms in 1995 in the South Sea of Korea. J. Kor. Soc. Oceanogr. 37, 212-223.
Lee, S. W. 1996. An outline of oceanographysics. Jipmundang Press, Seoul. 225 pp.
Ellegaard, M., N. F. Christensen and O. Moestrup. 1993. Temperature and salinity effects on growth of a non-chainorming strain of Gymnodinium catenatum (Dinophyceae) established from a cyst from recent sedients in the Sound, Denmark. J. Phycol. 29, 418-42
Hallegraeff, G. M. 1993. A review of harmful algal blooms and their apparent global increase. Phycologia 32, 79-99.
Kang, Y. S., H. G. Kim, W. A. Lim, C. K. Lee, S. G. Lee and S. Y. Kim. 2002. An unusual coastal environment and Cochlodinium polykrikoides blooms in 1995 in the South Sea of Korea. J. Kor. Soc. Oceanogr. 37, 212-223.
Lee, S. W. 1996. An outline of oceanographysics. Jipmundang Press, Seoul. 225 pp.
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UCI(KEPA) : I410-ECN-0101-2009-470-015374808