RUI: The Role of Dissolved Organic Material in Regulating Primary Production in Prairie Saline Lakes

RUI：溶解有机物质在调节草原盐湖初级生产中的作用

• 批准号: 0751273
• 负责人: Jasmine Saros
• 金额: --
• 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: 2007
• 资助国家: 美国
• 起止时间: 2007-07-25 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0751273&HistoricalAwards=false
• 关键词: RUI; Role; Dissolved; Organic; Material; RUI; Role; Dissolved; Organic; Material

Grasslands and converted grasslands (i.e. agricultural land) cover extensive areas in semi-arid regions of the world. Lakes situated in grasslands are usually saline and have high concentrations of dissolved organic matter (DOM). We hypothesize that DOM plays a critical role in regulating algal production in prairie saline lakes by binding nutrients and making them less available to algae. To explore this hypothesis, we will survey a suite of chemical and biological parameters in lakes from three areas in the central and northern Great Plains (ND, SD, NE). A series of experiments will be conducted in Years 2 and 3 to further explore patterns observed in the field surveys. This research will provide training for one graduate and six undergraduate students. A greater understanding of the controls on algal production may improve management practices in prairie saline lakes and ensure the quality of these habitats for migrating waterfowl.

草原和converted养草原（即农业用地）覆盖了世界半干旱地区的广泛地区。位于草原的湖泊通常是盐水，并且具有高浓度的溶解有机物（DOM）。我们假设DOM通过结合营养物质并使藻类的使用量降低，在调节草原盐湖中的藻类生产中起着至关重要的作用。为了探讨这一假设，我们将调查来自中部和北部大平原（ND，SD，NE）的三个地区的湖泊中的一组化学和生物学参数。将在第2年和第3年进行一系列实验，以进一步探索在现场调查中观察到的模式。这项研究将为一名研究生和六名本科生提供培训。对藻类生产的控制的更多了解可以改善草原盐水湖泊中的管理实践，并确保这些栖息地迁移水禽的质量。