Integrating Linkages Among Aquatic and Terrestrial Landscape Elements

FisherIntegrating linkages between aquatic and terrestrial landscape elements本研究旨在确定复杂景观中各种生态物质发生重要化学转化的位置。研究将从水福尔斯作为雨沿着其路径从小溪流到大溪流的时间开始跟踪。这些路径包括景观特征，如高地土壤，间歇性和永久性河流，以及由成熟树木组成的河边（河岸）区域。景观斑块间物质迁移的增减与斑块内物质的产生、释放或滞留有关。PI将在亚利桑那州的索诺兰沙漠进行这项研究，该生态系统对气候变化，特别是降雨和温度的变化反应显着。重点将放在氮的运动，这是增加在世界各地的景观，由于人类活动。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.