Climate change and ocean acidification: will southern ocean coccolithophorids be winners or losers? Implications for the global carbon pump

气候变化和海洋酸化：南大洋颗石藻是赢家还是输家？

• 批准号: DP1093801
• 负责人: Em/Prof Gustaaf Hallegraeff
• 金额: $ 19.49万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2010
• 资助国家: 澳大利亚
• 起止时间: 2010-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP1093801
• 关键词: Climate; change; ocean; acidification; will

This proposal brings skills on morphotaxonomy, microalgal culturing, physiology and biogeochemistry into the flurry of international activity focusing on consequences of ocean acidification. Increasing atmospheric carbon dioxide (CO2) is predicted to reduce calcification in the phytoplankton Emiliania huxleyi, notably in the Southern Ocean. In contrast, higher CO2 may stimulate photosynthesis and enhanced stratification may also select for E. huxleyi. These changes will affect foodwebs and the ability of the ocean to absorb CO2. Predicting the future success of this key organism is vital to understand the consequences of global change in Australian and Southern Ocean waters and to set targets for carbon emissions.

这一提议将形态分类学、微藻培养、生理学和生物地球化学等方面的技能纳入了关注海洋酸化后果的国际活动中。大气中二氧化碳（CO2）的增加预计会减少浮游植物赫胥黎Emiliania huxleyi的钙化，特别是在南大洋。相反，较高的CO2可能会刺激光合作用和增强的分层也可能选择赫胥黎。这些变化将影响食物网和海洋吸收二氧化碳的能力。预测这种关键生物未来的成功对于了解澳大利亚和南大洋水域全球变化的后果以及设定碳排放目标至关重要。