U.S.-Japan-Hong Kong Planning Visit: Long Term Collaborative Research Studying Fe Effects on Ecosystem Structure in the Subarctic Pacific

美国-日本-香港计划访问：长期合作研究铁对亚北极太平洋生态系统结构的影响

• 批准号: 0327245
• 负责人: Mark Wells
• 金额: $ 1.64万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0327245&HistoricalAwards=false
• 关键词: U.S.; Japan; Hong; Kong; Planning

0327245WellsThis award supports a short-term U.S-Japan-Hong Kong Planning Visit in preparation for a long-term collaborative research project studying Fe effects on ecosystem structure in the Sub arctic Pacific. The collaborators are Professor Mark Wells at the University of Maine and Professor Shigenobu Takeda at the University of Tokyo in Japan and Professor Paul Harrison at the Hong Kong University of Science and Technology. Virtually the entire Sub arctic Pacific to the Aleutian Islands is a High Nitrate Low Chlorophyll (HNLC) region, characterized by persistently elevated concentrations of macronutrients throughout the year. Independent studies have demonstrated that a shortage of the micronutrient iron is responsible for this condition. This finding is important because by controlling the export of carbon from surface waters, iron may influence atmospheric carbon dioxide concentrations and thus global climate. The researchers hope to plan a series of measurements that would be extremely important for understanding the longer term and broader effect of the iron enrichment. The measurements may also answer questions associated with the long-term response of the plankton community, changes in the iron chemistry and the fate of the carbon produced by the Fe enrichment. The collaborators have complementary scientific expertise in the field. Understanding the effects of iron inputs (natural or globally engineered) on ecosystem structure and carbon export in these waters is essential to obtain a predictive understanding of how changes in iron inputs may affect global climate. The exchange of ideas and data with Japanese and Hong Kong experts in the field will enable U.S. participants to advance their own work, and will set the stage for future international collaborative projects.

该奖项支持美国-日本-香港的短期规划访问，为研究铁对亚北极太平洋生态系统结构的影响的长期合作研究项目做准备。合作者是缅因州大学的Mark Wells教授、日本东京大学的Shigobu Takeda教授和香港科技大学的Paul Harison教授。事实上，整个亚北极太平洋到阿留申群岛都是一个高硝酸盐、低叶绿素(HNLC)区域，其特点是常量营养素的浓度全年持续升高。独立研究表明，微量营养素铁的缺乏是造成这种情况的原因。这一发现很重要，因为通过控制地表水中碳的出口，铁可能会影响大气中的二氧化碳浓度，从而影响全球气候。研究人员希望计划一系列测量，这些测量对于理解铁浓缩的更长期和更广泛的影响将是极其重要的。这些测量还可能回答与浮游生物群落的长期反应、铁化学的变化以及铁浓缩所产生的碳的去向相关的问题。合作者在该领域拥有互补的科学专业知识。了解铁输入(天然的或全球工程的)对这些水域的生态系统结构和碳输出的影响，对于预见性地了解铁输入的变化可能如何影响全球气候至关重要。与日本和香港在这一领域的专家交流想法和数据将使美国与会者能够推进他们自己的工作，并为未来的国际合作项目奠定基础。