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

威廉森9973938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(如太阳辐射)和温度如何相互作用来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，以调查暴露在不同波长的紫外线辐射下如何影响寡营养湖泊表层水域浮游动物群落的热带相互作用，在这些水域，捕食、食物限制和高紫外线辐射可能是很强的选择性力量。一系列的实验室和野外实验将被用来操纵有机体暴露在紫外线辐射下的波长。要了解热带状态或紫外线透明度不同的湖泊中上层群落动态的差异，以及它们对气候和大气臭氧水平的干扰或变化的敏感性，了解营养相互作用在高UVR环境中如何改变是至关重要的。随着全球气候和太阳辐射制度即将发生变化，这些都是需要解决的核心问题。

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.