한국, 동해에서의 아열대서 플랑크톤의 출현 양상에 대한 연구

Abstract

Global warming has resulted in lots of environmental changes. This study was conducted to determine the biological adjustment to changes in the ocean ecosystem such as new tropic plankton appearances in a temperate climate area. Therefore, in this study, we focused on appearance of tropical plankton and the extent of adaptations for increases in water temperature. We conducted sampling at 16 stations from 28 May to 3 June and 35 stations from 5 August to 10 August 2012. Several tropic species were found near the Dokdo, which is located in the eastern part of Korea. Their presence near the Dokdo is probably related to the Kuroshio Current, which affected their influence from spring to the summer in East Sea. The 5 species, Cochlodinium sp., Dinophysis caudata, Gonyaulax spinifera, Ostreopsis sp., Phalacroma mitra were observed at 9 of the 16 stations. The 4 species other than Cochlodinium sp. were observed at 7 of the 35 stations. 8 genera were observed during May but only 4 genera were observed most of the observed species in August were diatoms. Based on this study, even though, the water temperatures were higher in summer than in spring in this general temperate climate area, a similar number of tropical species were observed spring season. It could be the explanations of the seasonal effect of Kuroshio Current in East Sea, Korea.in this study, we focused on appearance of tropical plankton and the extent of adaptations for increases in water temperature. We conducted sampling at 16 stations from 28 May to 3 June and 35 stations from 5 August to 10 August 2012. Several tropic species were found near the Dokdo, which is located in the eastern part of Korea. Their presence near the Dokdo is probably related to the Kuroshio Current, which affected their influence from spring to the summer in East Sea. The 5 species, Cochlodinium sp., Dinophysis caudata, Gonyaulax spinifera, Ostreopsis sp., Phalacroma mitra were observed at 9 of the 16 stations. The 4 species other than Cochlodinium sp. were observed at 7 of the 35 stations. 8 genera were observed during May but only 4 genera were observed most of the observed species in August were diatoms. Based on this study, even though, the water temperatures were higher in summer than in spring in this general temperate climate area, a similar number of tropical species were observed spring season. It could be the explanations of the seasonal effect of Kuroshio Current in East Sea, Korea.