Planktonic protists respond to the climate change

초록

The impact of global climate change on ocean and coastal area will be significant. According to IPCC report, the sea level rise, carbon dioxide increase, sea surface temperature increase and Typhoon and storms are induced by global climate change. The increase of carbon dioxide has increased ocean acidification and changed ocean chemistry. Acidification to CO2 increasing induces aragonite concentration decreasing. As those results, coral habitats decrease and calcareous protist decrease. Coccolithophorids malformed coccoliths in complete coccosperes. Planktonic foraminifera reduced calcite production. The impact of global warming on marine ecosystem are very complex. By the global warming, net primary production decrease and the respiration of marine organisms increase. The increases of water temperature and the respiration induce the decrease of dissolved oxygen. Global warming induces the high growth rate of protists. However, global warming promotes the deficiency of nutrients on the surface of watermass by the strong stratification. The deficiency of nutrients on the surface change the marine food web from micro size based food web and nano and pico size based food web. As those results, global warming changes the marine biodiversity and the structure and function of marine ecosystem.