BEST: The Role of Ice Melting in Providing Available Iron to the Surface Water of the Eastern Bering Sea Shelf

最佳：冰融化为东白令海陆架地表水提供可用铁的作用

• 批准号: 0612538
• 负责人: Jingfeng Wu
• 金额: --
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0612538&HistoricalAwards=false
• 关键词: BEST; Role; Ice; Melting; Providing

Wu - 0612538Funds are provided to test the hypothesis that melting ice is a significant source of iron for biological growth in the stratified Bering Sea shelf water during spring. The PI will investigate whether iron in the water immediately beneath the sea ice cover is depleted before macronutrients are depleted during the initial algal growth in spring prior to sea ice melt. He, also, will determine whether subsequent melting of sea ice is an important source of available iron that leads to a persistent excess of iron in the ice-free shelf surface water. If available iron is a limiting micronutrient in this environment, the proposed experiments will provide an alternative to the standard explanation of the effects of sea ice melting on the spring phytoplankton bloom.

为验证融冰是春季白令海陆架分层水体中生物生长所需铁的重要来源这一假设提供了资金。该项目将调查海冰覆盖下的水中的铁是否在海冰融化前的春季藻类初始生长期间大量营养物质耗尽之前就已经耗尽。他还将确定随后的海冰融化是否是导致无冰大陆架表层水中铁元素持续过剩的重要来源。如果在这种环境中，可用铁是一种限制性微量营养素，那么拟议的实验将为海冰融化对春季浮游植物繁殖的影响的标准解释提供另一种解释。