Evolution question, please help!?

Question

explain why adaptations of particular organisms to interspecific competition may not necessarily represent instances of character displacement. what would a researcher have to demonstrate about two competing species to make a convincing case for character displacement?

Answer 1

Six criteria have been developed to establish character displacement as the mechanism for differences between sympatric species:

Ecological character displacement and the study of adaptation

http://www.pnas.org/content/97/11/5693.e...

Ecological and community-wide character displacement: the next generation

http://www3.interscience.wiley.com/journ...

Models of character displacement and the theoretical robustness of taxon cycles

http://md1.csa.com/partners/viewrecord.p...