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

从现有的海洋颜色数据中重建了二氧化碳分压和浮游植物功能类型（PFTs）的时间序列。海洋生态系统模式的模拟结果也表明，在亚北极或亚热带锋区，各PFT的pCO_2和Chla的时间距平均表现出显著的负相关性。在锋区，各PFT对总Chla的相对贡献与pCO_2的相关性表现出分类学上的依赖性：大中型藻类如硅藻和附着藻类与pCO_2呈负相关，而小型藻类与pCO_2呈正相关。这些结果表明，浮游植物群落结构，以及它们的生物量，可能在某些海洋区域的pCO_2的变化起着重要的作用。

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.