Heather will lead a discussion of the effects of big predators on their prey, asking the question: how scared are the prey when the predators are gone, and then come back. A good topic for Halloween, I think!
Berger, J. 2007. Carnivore repatriation and holarctic prey: Narrowing the deficit in ecological effectiveness. Conservation Biology 21:1105-1116.
Here is a link to the article:
http://www3.interscience.wiley.com/journal/118487792/abstract?CRETRY=1&SRETRY=0