Collaborative Reasearch: The Impact of UV Radiation on Trophic Interactions in Lakes: Direct and Indirect Effects on Zooplankton Communities

合作研究：紫外线辐射对湖泊营养相互作用的影响：对浮游动物群落的直接和间接影响

• 批准号: 9973938
• 负责人: Craig Williamson
• 金额: $ 39.06万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9973938&HistoricalAwards=false
• 关键词: Collaborative; Reasearch; Impact; UV; Radiation

Williamson9973938In spite of the importance of abiotic factors influencing community structure, little is known about how abiotic factors (such as solar radiation) and temperature may interact to modify community and ecosystem structure. This study will examine the effects of ultraviolet radiation (UVR) on trophic interactions in zooplankton communities. Experiments are planned to investigate how exposure to different wavelengths of ultraviolet radiation influence tropic interactions in zooplankton communities in the surface waters of oligotrophic lakes where predation, food limitations and high UVR are likely to be strong selective forces. A series of laboratory and field experiments will be used to manipulate the wavelengths of UVR to which organisms are exposed. Understanding how trophic interactions are modified in high UVR environments is essential to knowing how differences in the dynamics of pelagic communities in lakes that differ in their tropic status or UV transparency, as well as in their sensitivity to disturbance or changes in climate and atmospheric ozone levels. With impending changes in global climate and solar radiation regimes, these are central questions that need to be addressed.

Williamson9973938尽管非生物因素影响群落结构的重要性，但人们对非生物因素（如太阳辐射）和温度如何相互作用以改变群落和生态系统结构知之甚少。本研究旨在探讨紫外线辐射对浮游动物群落营养相互作用的影响。实验计划调查如何暴露于不同波长的紫外线辐射的影响热带的浮游动物群落中的表面沃茨的贫营养湖泊的捕食，食物的限制和高紫外线辐射可能是强大的选择力。一系列的实验室和现场实验将被用来操纵紫外线辐射的波长，生物体暴露。了解营养相互作用是如何在高紫外线辐射率的环境中修改是必不可少的，以了解如何在湖泊中的浮游生物群落的动态差异，不同的热带状态或紫外线的透明度，以及在他们的敏感性干扰或气候和大气臭氧水平的变化。随着全球气候和太阳辐射状况即将发生变化，这些都是需要解决的核心问题。