STARTER: Distinguishing Direct and Indirect Effects in Community Responses to Perturbation: An Experimental Approach

这个PI在1997年获得博士后奖学金，致力于研究生态历史如何影响湖泊营养级联的强度。 费舍尔博士曾与纳尔逊海尔斯顿博士在康奈尔大学为她的奖学金。 她现在在富兰克林和马歇尔学院的终身职位，并建议测试的假设，直接和间接的影响，可以区分使用同时压力和脉冲扰动实验。 她将通过评估这两种操作对淡水浮游动物群落和鱼类捕食者的影响来做到这一点。 她将进行原位围隔实验，并总体上评估PULSE成为北温带淡水浮游动物PRESS的断点。

This PI received a posdoctoral fellowship in 1997 to work on how ecological history affects the strength of trophic cascades in lakes. Dr. Fischer worked with Dr. Nelson Hairston at Cornell University for her fellowship. She is now in a tenure track position at Franklin and Marshall College and proposes to test the hypothesis that direct and indirect effects can be distinguished using simultaneous PRESS and PULSE perturbation experiments. She will do this by assessing the effects of the two types of manipulations on freshwater zooplankton communities and fish predators. She will conduct in situ mesocosm experiments and overall, will assess the breakpoint where a PULSE becomes a PRESS for freshwater zooplankton in the north temperate zone.