The Relationship between pCO2 and the Delta 13C of Carbon Fixed by Marine Phytoplankton using Marine Mesocosms

海洋干酪根的碳同位素组成主要受COz有效性的控制。然而，几乎没有关于不同COz水平对碳同位素分馏影响的实验数据。为在URI海洋生态系统研究实验室进行为期两年的研究提供资金，以检查在利用海洋中生态系统进行植物合成过程中，pCOz水平增加对浮游植物碳同位素分异的影响。试验将使用4个中生态池，为期16个月。每个水箱将保持在不同但恒定的TCOz， pCOz和pH水平。每周将对生产力和温度、盐度、营养等进行评估。将进行监测，以了解浮游植物对碳同位素分馏对pCOz水平升高的响应。

The carbon isotopic composition of marine kerogen is thought to be primarily controlled by COz availability. And yet almost no experimental data exists on the effects of different COz levels on carbon isotopic fractionation. Funds are provided for a two years' study to examine the effects of increased pCOz levels on the Fractionation of carbon isotopes of phytoplankton during phytosynthesis using marine mesocosm system at URI Marine Ecosystem Research lab. Experiment will employ 4 mesocosm tanks for up to 16 months. Each tank will be held at differing but constant TCOz, pCOz, and pH levels. Weekly estimates of productivity will be made and temperature, salinity , nutrients, etx. will be monitored to learn about the phytoplanktonic response of carbon isotopic franctionation to increased pCOz level.