연안 빈산소해역의 플랑크톤 종자 생태계의 위기

Abstract

A mass death and diversity loss of marine life are broken out in hypoxic or anoxic area, which is called Dead Zone. Especially, nutrient enrichment and weak water circulation in enclosed coastal areas induce commonly the hypoxia. The dead zone is expanded globally and a hot issue to be treated as a national agenda.Marine seed life such as cysts, spores, and eggs is abundant on surface sediment where the hypoxic or anoxic conditions are mainly occurred. The seed populations play an important role as the initiators of marine aquatic vegetation via seed germination, suggesting that the preservation of healthy seed populations is a topic subject for sustainable marine life.Hypoxic condition in bottom water is closely connected with sediment acidification and is critical pressures to physiological and ecological changes of marine seed populations. The acidification effect on the viability of cyst population has been recently studied in Korean coastal water. The study results suggest that the survival of calcareous dinoflagellate cysts is being threatened by environmental conditions in the hypoxic zone of a eutrophied area. Relative studies are progressing to diatom resting spore, ciliate cysts, and zooplankton egg. It may be a message that the survival route of marine life via seed recruitment will be shut off by the sediment acidification and the production in marine ecosystem will be not promised.one is expanded globally and a hot issue to be treated as a national agenda.Marine seed life such as cysts, spores, and eggs is abundant on surface sediment where the hypoxic or anoxic conditions are mainly occurred. The seed populations play an important role as the initiators of marine aquatic vegetation via seed germination, suggesting that the preservation of healthy seed populations is a topic subject for sustainable marine life.Hypoxic condition in bottom water is closely connected with sediment acidification and is critical pressures to physiological and ecological changes of marine seed populations. The acidification effect on the viability of cyst population has been recently studied in Korean coastal water. The study results suggest that the survival of calcareous dinoflagellate cysts is being threatened by environmental conditions in the hypoxic zone of a eutrophied area. Relative studies are progressing to diatom resting spore, ciliate cysts, and zooplankton egg. It may be a message that the survival route of marine life via seed recruitment will be shut off by the sediment acidification and the production in marine ecosystem will be not promised.