Integrating Linkages Among Aquatic and Terrestrial Landscape Elements

渔业综合水生和陆地景观元素之间的联系这项研究旨在确定在复杂的景观中，各种生态物质的重要化学变化发生在哪里。研究将从水以降雨的形式沿着从小溪流到大溪流的路径进行追踪。这些路径包括景观特征，如旱地土壤、断断续续的和永久的溪流，以及生长着成熟树木的溪边(河岸)地带。景观斑块之间传输的物质的增加或减少将与斑块内的生产、释放或保留有关。PI将在亚利桑那州的索诺兰沙漠进行这项研究，这是一个对气候变化做出巨大反应的生态系统，特别是降雨和温度。重点将放在氮的移动上，由于人类活动，氮在世界各地的景观中正在增加。这项研究的结果将有助于确定和管理维持和提高水质的关键生态系统组成部分。

Abstract00-75650FisherIntegrating linkages among aquatic and terrestrial landscape elementsThis research is designed to determine where in complex landscapes important chemical transformations of various ecological materials occur. Studies will follow water from the time it falls as rain along its path from small rivulets to large streams. These pathways include landscape features such as upland soils, intermittent and permanent streams, and stream side (riparian) zones populated by mature trees. Increases or decreases in materials transported between landscape patches will be related to production, release, or retention within patches. The PIs will perform this research in the Sonoran desert of Arizona, an ecosystem that responds dramatically to variation in climate, especially rainfall and temperature. Emphasis will be on the movement of nitrogen, which is increasing in landscapes worldwide due to human activity. Results of this research will aid in identifying and managing critical ecosystem components for maintenance and enhancement of water quality.