Aquatic Ecosystem Responses to Changes in the Environment of an Arctic Drainage Basin

水生生态系统对北极流域环境变化的响应

• 批准号: 9911278
• 负责人: John Hobbie
• 金额: $ 400万
• 依托单位: Marine Biological Laboratory
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9911278&HistoricalAwards=false
• 关键词: Aquatic; Ecosystem; Responses; Changes; Environment

AbstractOPP-9911278This proposed research seeks to predict the impact of perturbations such as climate change, atmospheric deposition of nutrients, and increasing use of natural resources, on the Arctic north-slope tundra. Through a variety of research grants, including Long Term Ecological Research projects, the Toolik Lake Research Site has a 25-year research record on lake, stream, and terrestrial ecology. This proposal would seek an additional 5 years of support to develop linked models of soil, stream, and lake processes affecting the flow of carbon and nutrients (nitrogen and phosphorus). Detailed experiments would be conducted to evaluate specific interactions. Additional work would develop (1) linked numerical component models for fluxes of water, nutrients and organic matter through small catchments and compare these models with new experimental results, (2) develop an ecological classification for the streams and lakes within the larger basin containing Toolik Lake, (3) produce information by remote sensing and GIS (geographic information system) on the surrounding environment and also on the location of stream and lake classes and likely structure of food webs, and (4) calibrate the component models. Educational and outreach experiences have been included.

摘要：9911278这项拟议中的研究旨在预测气候变化、大气营养物沉积和自然资源使用增加等扰动对北极北坡苔原的影响。 通过各种研究赠款，包括长期生态研究项目，图里克湖研究基地有25年的湖泊，河流和陆地生态研究记录。 该提案将寻求额外的5年支持，以开发影响碳和营养物质（氮和磷）流动的土壤、河流和湖泊过程的关联模型。 将进行详细的实验以评估具体的相互作用。 额外的工作将：（1）开发通过小集水区的水、营养物和有机物通量的关联数值组件模型，并将这些模型与新的实验结果进行比较;（2）为包含图里克湖的较大流域内的河流和湖泊开发生态分类，（3）利用遥感和地理信息系统产生信息（地理信息系统）对周围环境的影响，以及河流和湖泊的位置，以及食物网的可能结构，以及（4）校准组件模型。 教育和外联经验也包括在内。