Bubble, Bubble CO2 is the trouble: A Natural Ocean Acidification Experiment in a coral reef setting

气泡，气泡二氧化碳是麻烦所在：珊瑚礁环境中的自然海洋酸化实验

• 批准号: DP140103567
• 负责人: Prof Stewart Fallon
• 金额: $ 17.85万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140103567
• 关键词: Bubble; CO2; trouble; Natural; Ocean

Carbon dioxide seep sites expose shallow coral reefs in Papua New Guinea to volcanic carbon dioxide resulting in gradients of seawater ranging from pH 8.0 (normal) to a more acidic pH of 7.5. Some areas of these reefs experience carbon dioxide exposure equivalent to IPCC predictions for 2050 and 2100. This project will reconstruct seawater pH using radiocarbon as a novel tracer of carbon dioxide input at a coral reef site that has been exposed to high carbon dioxide due to volcanic seeps (seep carbon dioxide has no carbon-14) for an unknown period of time (at least many decades, but possibly centuries). These results will help to understand the time it takes to change calcifying organisms into “winners” or “losers” as an analog for Ocean Acidification due to increased atmospheric carbon dioxide input.

二氧化碳渗漏点使巴布亚新几内亚的浅层珊瑚礁暴露在火山二氧化碳中，导致海水的pH值从8.0（正常）到更酸性的7.5不等。这些珊瑚礁的一些地区的二氧化碳暴露量相当于IPCC对2050年和2100年的预测。该项目将利用放射性碳作为二氧化碳输入的一种新型示踪剂，重建海水pH值，该珊瑚礁遗址由于火山渗漏（渗漏的二氧化碳不含碳-14）而暴露在高二氧化碳中，时间不详（至少几十年，但可能是几个世纪）。这些结果将有助于理解将钙化生物转变为“赢家”或“输家”所需的时间，以模拟由于大气二氧化碳输入增加而导致的海洋酸化。