Experimental Stream System at the Sierra Nevada Aquatic Research Laboratory

加州大学圣巴巴拉分校在内华达山脉东部设有一个野外站，从事田野科学的研究和教学。内华达山脉水生研究实验室(SNARL)是许多在加利福尼亚州中东部和内华达州西部工作的科学家的基地。此外，Snarl还保护各种用于教学和研究的陆地和淡水栖息地。该项目将提供资金，建造15条中型试验河道，以加强斯纳尔现有的溪流和池塘系统。新的航道将填补SRNAL现有试验单位规模的一个重要空白，目前仅有很小的实验室和野外航道，以及一系列由现有自然溪流分割形成的大型野外航道。新的中等大小的野外通道将允许研究人员检查空间尺度对实验操作结果的影响。这些水道将模拟天然溪流的物理、化学和生物特性，同时为严格的实验设计提供足够的复制。尽管SRNAL现有的流道不能为大多数实验提供足够的复制，但它们仍然是现场实验装置电池的一个现实和重要的组成部分。因此，该项目还提供资金修复现有试验河流系统上的混凝土控制结构。

The University of California at Santa Barbara maintains a field station in the eastern Sierra Nevada mountains for research and teaching in the field sciences. The Sierra Nevada Aquatic Research Laboratory (SNARL) serves as a base for many scientists working in east-central California and western Nevada. In addition, SNARL protects a variety of terrestrial and freshwater habitats for teaching and research use. This project will provide funds to construct fifteen medium- sized experimental stream channels to augment the existing stream and pond system at SNARL. The new channels will fill an important gap in the scale of experimental units available at SNARL, which currently has only small laboratory and field channels and a series of large field channels which were formed by division of an existing natural stream. The new, medium-sized field channels will allow investigators to examine the effects of spatial scale on the outcomes of experimental manipulations. The channels will simulate the physical, chemical and biological characteristics of natural streams while providing sufficient replication for rigorous experimental designs. Although the existing stream channels at SNARL do not provide sufficient replication for most experiments, they are still a realistic and important component of the battery of experimental units at the site. Therefore, the project also provides funds to repair the concrete control structures on the existing experimental stream system.