Primary Productivity in Antarctic Pack Ice: Time Series Studies at Ice Station

南极浮冰的初级生产力：冰站的时间序列研究

• 批准号: 9023669
• 负责人: James Kremer
• 金额: $ 22.08万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9023669&HistoricalAwards=false
• 关键词: Primary; Productivity; Antarctic; Pack; Ice

The significance of the proposed research is that it is the first chance sea ice ecologists have of obtaining time series data on microbial biomass accumulation, growth rates and productivity in the Antarctic pack ice ecosystem. This information is essential to understanding overall Southern Ocean productivity. Pack ice covers 20 million square kilometers of the surface of the Southern Ocean. Because of the multi-disciplinary nature of the AnZone project, Dr. Sullivan proposes to investigate primary production and factors that influence the growth and development of microalgal and bacterial assemblages with the first and second year pack ice. AnZone project is an international cooperative program located in western Weddell Sea. The research planned under the AnZone project will contribute substantially to understanding biological rate processes in sea ice. Additionally, Dr. Sullivan proposes to examine indicators of natural cell metabolism as indices of natural growth of pack ice microalgae. Throughout these investigations, Dr. Sullivan will test the hypothesis that a substantial fraction of primary and secondary productivity within the ice covered region of the Southern Ocean occurs within the pack ice and that it is mediated by microalgae and bacteria associated with the extensive ice crystal surfaces of the pack ice habitat.

提出研究的意义在于它是第一个 海冰生态学家有机会获得时间序列数据， 微生物生物量积累、生长速率和生产力 南极浮冰生态系统 这一信息至关重要 了解南大洋的整体生产力。 浮冰 覆盖了2000万平方公里的地球表面， 南大洋。 由于多学科的性质， 一个区域项目，沙利文博士建议研究主要 生产和影响增长和发展的因素 微藻和细菌的组合 一年一包冰。 AnZone项目是一个国际合作 位于威德尔海西部的项目。 研究计划 在AnZone项目下， 了解海冰的生物速率过程。 此外，沙利文博士建议检查指标， 作为浮冰自然生长指标的自然细胞代谢 微藻 在整个调查过程中，沙利文博士将 测试假设，大部分的主要和 次级生产力在冰覆盖的地区， 南大洋发生在浮冰群中， 与大面积冰层相关的微藻和细菌 浮冰栖息地的水晶表面。