Collaborative Research: How Does Changing Seasonality Affect the Capacity of Arctic Stream Networks to Influence Nutrient Fluxes from the Landscape to the Ocean?

合作研究：季节性变化如何影响北极河流网络影响从景观到海洋的营养通量的能力？

• 批准号: 0902113
• 负责人: Wilfred Wollheim
• 金额: $ 34.09万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902113&HistoricalAwards=false
• 关键词: Collaborative; Research; How; Does; Changing

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Stream networks are intimately connected to the landscapes through which they flow and significantly transform nutrients and organic matter that are in transport from landscapes to oceans. This work will quantify the relative influences of throughflow, lateral inputs, and hyporheic (a layer of surface sediments that contains water which exchanges continuously with water in the open channel) regeneration on the seasonal fluxes of C, N, and P in an arctic river network, and determine how these influences will shift under seasonal conditions that are likely to be substantially different in the future. This objective is a logical extension of earlier. This work will focus on seasonal dynamics at different river reach scales (1st to 4th order streams) and will lay the groundwork for a whole river network model to integrate the influences of throughflow, lateral inputs, hyporheic regeneration, and in-stream metabolism on C, N, and P fluxes through an entire river network.

该奖项是根据2009年的《美国复苏和再投资法》（公法111-5）资助的。流网络与它们流过的景观密切相关，并显着改变了从景观到海洋运输的营养和有机物。这项工作将量化遍布，侧向输入和低音（表面沉积物的一层层，其中包含水与开放通道中的水连续交换水）对北极河网络中C，N和P的季节性磁通的水的相对影响，并确定这些影响在季节性的情况下会在季节性的情况下如何变化。这个目标是早期的逻辑扩展。这项工作将集中于不同河流范围（1至4阶阶段）的季节性动态，并将为整个河网络模型奠定基础，以整合遍布，侧向输入，横向输入，低音再生的影响，以及通过整个河网络对C，N和P量的播放代谢。