Biological Carbon Fixation in the South Yellow Sea Seawater

2 Biological Carbon Fixation in the South Yellow Sea Seawater 

Consecutive cruise data along three transects (added to four transects since 2003) in the southern Yellow Sea (SYS, Fig. 3.16), maintained by the YS Environmental Cooperative Research between China and Korea, were used. The research concerned marine physics, chemistry, geology, biology, and environment. The cruise data included the ocean temperature (T), salinity (5), plankton biomass (chlorophyll a concentration and zooplankton biomass, etc.) and biogenic elements. 

Based on the average temperature and salinity calculated from 1999 2005 cruise data, 33 stations can be distinguished in four distinct water masses and were plotted with different symbols in Fig. 3.17 the YS and ECS mixed water with relatively high salinity (32.5%o 33.7%o) and surface temperature 

YS Costal Water YS surface water YSColdWater YS and ECS mixed water 

Many researchers have noticed that the SYS is deficient in nutrients, both the chlorophyll a (Chi a) and primary production levels being very low. For better imderstanding the response of the carbon fixed production (CFP) of phjdoplankton to environmental changes in the SYS, daily carbon fixed production of phjdoplankton, namely primary productivity, was estimated as follows (Zheng et al., 2006)  

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