SPECTROPHOTOMETER AND PROFILER FOR TERC FIELD STATION AND LABORATORY, LAKE TAHOE

加州大学戴维斯分校太浩湖环境研究中心 (TERC) 获得并保持了世界标志性湖泊之一太浩湖 50 年的长期生态变化记录。该地区位于加利福尼亚州和内华达州的内华达山脉，由于土地利用变化、外来物种变化和气候变化，该地区已经并且预计将继续遭受巨大影响。分光光度计和水质分析传感器包这两个设备可以延续这种不间断的数据记录，允许校准新一代光学传感器，并有助于分析和理解变化的原因和后果。该分光光度计具有独特的能力，可用于内华达山脉湖泊典型的超清水，将为干旱西部水生生态系统的研究提供区域资产。持续获取和存档的长期、可公开访问的数据库为科学家、政策制定者和公众提供了不可替代的资源。 TERC 位于太浩盆地的两个公共教育中心使用这些数据来开发展览和学习项目，确保科学投资用于教育和启发学童和公众有关科学、生态系统管理和我们受到威胁的淡水资源的知识。有关研究、监测和教育计划的详细信息，请访问 terc.ucdavis.edu。使用这两种设备的主要目标是通过使用新仪器进行稳定和准确的测量来维持和扩展太浩湖的长期生态系统记录。其次，该设备可广泛用于内华达山脉和该地区的其他湖泊。这些仪器非常适合在各种清澈、低浓度的内华达山脉湖泊中使用。长光程分光光度计允许通过根据现场样品的光谱响应进行高精度有色溶解有机物 (CDOM) 校准来探索新的研究领域。水质分析传感器包 (Seabird CTD) 可以在多个湖泊中进行全年分析。这些仪器将允许扩大对高山湖泊 CDOM 和密度分层影响的研究。当前的研究强调了 CDOM 作为水生生态系统变化指标和变化驱动因素的作用。迫切需要 CDOM 数据来校准模型，以调查未来 100 年全球变化对生态系统健康的潜在影响。 有关 TERC 的更多信息，请访问网站 http://terc.ucdavis.edu/。

The UC Davis Tahoe Environmental Research Center (TERC) has acquired and maintained a 50-year record of long-term ecological change in one of the world's iconic lakes, Lake Tahoe. Located in the Sierra Nevada mountains of California and Nevada, this is an area that has experienced, and is predicted to continue experiencing, great impacts on account of land use change, introduced species change and climate change. The two equipment items, a spectrophotometer and a profiling water quality sensor package, allow for the continuation of this unbroken data record, permit the calibration of a new generation of optical sensors, and help in the analysis and understanding of the causes and the consequences of change. The spectrophotometer, uniquely capable of use in ultra-clear water typical of Sierra Nevada lakes, will provide a regional asset for the study of aquatic ecosystems in the arid west. The long-term, publicly accessible database that continues to be acquired and archived provides an irreplaceable resource for scientists, policy makers, and the general public. The use of the data in the development of exhibits and learning programs at TERC's two public education centers in the Tahoe basin ensures that investments in science are being used to both educate and inspire school children and the general public about science, ecosystem stewardship and our threatened freshwater resources. Details of the research, monitoring and educational programs are available at terc.ucdavis.edu.The primary goal for the use of both items of equipment is to maintain and extend the long-term ecosystem record for Lake Tahoe by allowing for stable and accurate measurements to be taken with new instruments. Secondarily, the equipment can be used in a broad range of Sierra Nevada and other lakes in the region. The instruments are ideal for use in a broad range of clear, low concentration Sierra Nevada lakes. The long path-length spectrophotometer permits new areas of research to be explored through high accuracy Colored Dissolved Organic Matter (CDOM) calibrations from the spectral response of field samples. The profiling water quality sensor package (Seabird CTD) enables year-round profiling to be maintained in multiple lakes. The instruments will permit an expansion of research on CDOM and density stratification impacts in high mountain lakes. Current research is highlighting the role of CDOM both as an indicator of change and as a driver of change in aquatic ecosystems. CDOM data are urgently needed to calibrate models investigating the potential impacts of global change on ecosystem health in the next 100 years. For more information about TERC, visit the website at http://terc.ucdavis.edu/.