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. ***

美国-阿根廷合作科学项目奖将支持利哈伊大学的克雷格·威廉姆森和阿根廷科马休大学的埃斯特班·巴尔塞罗的合作。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。平流层臭氧的损失导致全球入射UV-B辐射的增加。对海洋系统的研究表明，自然产生的UV-B辐射通量会损害水柱过程。淡水生态系统可能比海洋系统更容易受到UV-B辐射的破坏，但关于湖泊UV-B辐射的研究却很少。该项目的目标是模拟湖泊中UV-B的衰减；探讨UV-B对叶绿素-磷关系可能产生的影响；并研究受UV-B辐射不同影响的湖泊浮游动物群落的变化。这些研究将补充美国研究小组对北温带湖泊紫外线- b影响的研究和阿根廷研究小组对安第斯湖泊的研究。这些结果很可能增进对湖泊中UV-B辐射重要性的认识，并将加强今后研究UV-B辐射对环境影响的国际合作。＊＊＊