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Effects of Environmental Conditions on Germination of Alexandrium tamarense Cysts from Masan Bay, Korea  

박명환 (한양대학교 환경과학과)
김영옥 (한양대학교 생명과학과)
조수연 (한양대학교 생명과학과)
한명수 (한양대학교 환경과학과, 생명과학과)
Publication Information
Korean Journal of Environmental Biology / v.22, no.1, 2004 , pp. 200-205 More about this Journal
Abstract
The effects of environmental eonditions on germination of Alexandrium tamarense cysts were examined. The cysts were isolated from the sediment samples collected from Masan Bay. Germination success was measured by the incubation of cysts under the laboratory conditions and compared in different water temperatures, salinities, and sediment depths. The highest germination rate was recorded at $15^{\circ}C$ and relatively higher germination rate was observed at $10^{\circ}C$ above, while little or no germination occurred at 20 to $25^{\circ}C$. Light and salinity affected little on the excystment. Germination rate according to the sediment depths was higher in the lower layer (5∼10 cm) than in the upper (0∼2 cm) of the sediments collected in March, while higher in the upper than the lower in November. :Based on these results, water temperature seems a principal factor controlling germination of A. tamarense in Masan Bay.
Keywords
Alexandrium tamarense cysts; environmental factors; germination; sediment depth;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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