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

这位PI于1997年获得博士后奖学金，研究生态历史如何影响湖泊营养级联的强度。费舍尔博士与康奈尔大学的尼尔森·海尔斯顿博士合作获得奖学金。她现在在富兰克林和马歇尔学院（Franklin and Marshall College）担任终身教职，并提议通过同时进行PRESS和PULSE扰动实验来验证直接和间接影响可以区分的假设。她将通过评估这两种类型的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。她将在现场进行中生态实验，总体而言，她将评估北温带淡水浮游动物的脉冲变成压力的临界点。

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.