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

pCO2 与海洋浮游植物利用海洋中生态系统固定碳的 Delta 13C 之间的关系

• 批准号: 8817446
• 负责人: Michael Arthur
• 金额: $ 20.31万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817446&HistoricalAwards=false
• 关键词: Relationship; between; pCO2; Delta; 13C

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.

海相干酪根的碳同位素组成主要受CoZ有效性控制。然而，几乎没有关于不同coz水平对碳同位素分馏的影响的实验数据。提供资金用于一项为期两年的研究，以研究在利用国际海洋生态系统海洋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馏的影响。实验将使用4个中微体坦克，最长可达16个月。每个储罐将被保持在不同但恒定的TCOz、pCOz和pH水平。每周将对生产率和温度、盐度、营养物质、ETX进行估计。将被监测，以了解碳同位素分馏对pCOz水平增加的浮游反应。