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

二氧化碳渗漏点使巴布亚新几内亚的浅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7.5的酸性梯度。这些珊瑚礁的某些地区的二氧化碳暴露量相当于IPCC对2050年和2100年的预测。该项目将使用放射性碳作为一种新的二氧化碳输入示踪剂，在一个珊瑚礁地点重建海水pH值，该地点因火山渗出而暴露于高二氧化碳中（渗出的二氧化碳没有碳-14），时间不详（至少几十年，但可能是几个世纪）。这些结果将有助于了解钙化生物变成“赢家”或“输家”所需的时间，作为海洋酸化的模拟，由于大气中二氧化碳的输入增加。

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.