U.S.-Argentina: UV-B Radiation and Zooplankton Community Structure across Depth and Elevation Gradients in Lakes in Southern Argentina

美国-阿根廷：阿根廷南部湖泊的 UV-B 辐射和跨深度和高程梯度的浮游动物群落结构

• 批准号: 9314421
• 负责人: Craig Williamson
• 金额: $ 2.98万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-15 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9314421&HistoricalAwards=false
• 关键词: U.S.; Argentina; UV; Radiation; Zooplankton

9314421 Williamson This U.S.-Argentina Cooperative Science Program award will support the collaboration of Craig Williamson of Lehigh University and Esteban Balseiro of the University of Comahue in Argentina. The project aims to investigate the impact of UV-B radiation on high-elevation lakes in the southern Andes. Loss of stratospheric ozone is resulting in global increases in incident UV-B radiation. Investigations of marine systems suggest that naturally occurring fluxes of UV-B radiation can harm water column processes. Freshwater ecosystems may be more predisposed to damage by UV-B radiation than marine systems, yet little work has been done on UV-B radiation in lakes. This project's goals are to model UV-B attenuation in lakes; investigate the possible impact of UV-B on the chlorophyll-phosphorus relationship; and examine shifts in zooplankton communities in lakes differentially affected by UV-B radiation. These studies will complement the U.S. group's research on UV-B impacts in north termperate lakes and the Argentine group's research on Andean lakes. The results are likely to improve understanding of the importance of UV-B radiation in lakes, and will strengthen international collaborations for future studies of the effects of UV-B radiation on the environment. ***

9314421 Williamson 该美国-阿根廷合作科学计划奖将支持里哈伊大学的 Craig Williamson 和阿根廷科马休大学的 Esteban Balseiro 的合作。 该项目旨在调查 UV-B 辐射对安第斯山脉南部高海拔湖泊的影响。 平流层臭氧的丧失导致全球 UV-B 辐射增加。 对海洋系统的调查表明，自然产生的 UV-B 辐射通量可能会损害水柱过程。 淡水生态系统可能比海洋系统更容易受到 UV-B 辐射的损害，但针对湖泊 UV-B 辐射的研究却很少。 该项目的目标是模拟湖泊中的 UV-B 衰减； 研究 UV-B 对叶绿素-磷关系的可能影响；并检查受 UV-B 辐射影响不同的湖泊中浮游动物群落的变化。 这些研究将补充美国小组对北温带湖泊 UV-B 影响的研究和阿根廷小组对安第斯湖泊的研究。 研究结果可能会提高人们对 UV-B 辐射在湖泊中的重要性的认识，并将加强未来研究 UV-B 辐射对环境影响的国际合作。 ***