Correlation analysis between phytoplankton functional types and the ocean partial pressure of carbon dioxide using the satellite ocean colour observation and marine ecosystem modelling.

点击翻译按钮获取中文摘要

Time series of partial pressure of carbon dioxide and phytoplankton functional types(PFTs) were reconstructed from the existing ocean colour data. Temporal anomaly of pCO_2 and fractional Chlorophyll-a(Chla) of each PFT showed a significant negative correlation around the sub-arctic or sub-tropical frontal zones, which was also found from the hindcast simulations of a marine ecosystem model. On the other hand, correlation between pCO_2 and a relative contribution of each PFT to the total Chla showed a taxonomic dependence in the frontal zones : the large-and middle-sized algae such as diatoms and haptophytes showed a negative correlation with pCO_2 whereas the small-sized algae a positive correlation. These results imply that phytoplankton community structure, as well as their biomass, may play an important role on variation in pCO_2 for some oceanic regions.