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Natural Iron Fertilization from the Patagonian and South Georgia Island Shelves to the Open Waters of the Southern Ocean.

从巴塔哥尼亚和南乔治亚岛大陆架到南大洋开放水域的天然铁肥。

基本信息

批准号：
1357530
负责人：
Yvette Spitz
金额：
$ 75.31万
依托单位：
Oregon State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2014
资助国家：
美国
起止时间：
2014-03-01 至 2019-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1357530&HistoricalAwards=false
关键词：
Natural Iron Fertilization Patagonian South

项目摘要

As in other high nutrient, low chlorophyll (HNLC) regions, primary production in the Southern Ocean is likely limited by iron availability. These HNLC conditions are rarely observed in the Atlantic sector of the Southern Ocean in contrast to the Pacific sector, indicating that productivity in the Atlantic sector may be the result of a greater input of iron, the source of which remains unidentified. In this study, researchers from Oregon State University will use model simulations to quantitatively examine iron sources and the processes leading to the chlorophyll-a blooms observed in the South Atlantic sector of the Southern Ocean, particularly in the region contiguous to the Patagonian shelf and near the South Georgia Island. Results from this study will advance our understanding of how natural iron fertilization affects primary productivity in potentially the strongest carbon sink area of the Southern Ocean.Broader Impacts: This research will contribute to the climate and marine ecosystem community research, particularly with respect to how iron inputs may control carbon dioxide fluxes in the Southern Ocean. In addition, educational impacts from this study include training for undergraduate and post-doctoral researchers, and integration of findings into undergraduate curriculum.

与其他高营养、低叶绿素（HNLC）区域一样，南大洋的初级生产可能受到铁供应的限制。这些HNLC条件很少观察到在南大洋的大西洋部门相比，太平洋部门，这表明在大西洋部门的生产力可能是铁的投入，其来源仍然不明的结果。在这项研究中，来自俄勒冈州州立大学的研究人员将使用模型模拟来定量研究铁源和导致在南大洋南大西洋部分观察到的叶绿素a水华的过程，特别是在毗邻巴塔哥尼亚大陆架和南格鲁吉亚岛附近的地区。这项研究的结果将推进我们对自然铁施肥如何影响南大洋潜在最强碳汇区初级生产力的理解。更广泛的影响：这项研究将有助于气候和海洋生态系统社区研究，特别是关于铁投入如何控制南大洋的二氧化碳通量。此外，这项研究的教育影响包括对本科生和博士后研究人员的培训，以及将研究结果纳入本科课程。