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在影响社区结构的非生物因素的重要性，对非生物因素（例如太阳辐射）和温度如何相互作用以修改社区和生态系统结构的重要性知之甚少。这项研究将检查紫外线辐射（UVR）对浮游动物群落中营养相互作用的影响。计划进行实验，以研究如何暴露于紫外线社区的紫外线相互作用的不同波长如何影响贫营养湖水水域的热带相互作用，在这种湖面水域中，捕食，食物限制和高UVR可能是强大的选择性力量。将使用一系列实验室和现场实验来操纵生物体暴露到的UVR的波长。了解如何在高UVR环境中修改营养相互作用，对于知道如何在其热带地位或紫外线透明度上不同的湖泊社区动力学以及对气候和气候变化的敏感性或气候和大气臭氧水平的变化而存在的差异。随着全球气候和太阳辐射制度的即将发生的变化，这些是需要解决的主要问题。