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尽管非生物因素对群落结构的影响很重要，但人们对非生物因素（例如太阳辐射）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。这项研究将研究紫外线辐射 (UVR) 对浮游动物群落营养相互作用的影响。计划进行实验来研究暴露于不同波长的紫外线辐射如何影响贫营养湖泊表层水中浮游动物群落的热带相互作用，在这些湖泊中，捕食、食物限制和高紫外线辐射可能是强烈的选择力。一系列实验室和现场实验将用于控制生物体所暴露的紫外线波长。了解高紫外线辐射环境中营养相互作用如何改变，对于了解热带状态或紫外线透明度不同的湖泊中的中上层群落的动态差异以及它们对气候和大气臭氧水平的干扰或变化的敏感性有何差异至关重要。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。