Well that is true, hibridization is indeed a very important factor in evolution. I see where your going and yes I did contradict myself a bit in the two senteces. The first one Im on the traditional conservation side and the second one is more a proactive modern cenario, seeing the biosphere as woule dinamic system.Hmmm. Your argument is a bit contradictory, Coura. Considering the above two points that you have posted, one may assume that hybridisation is a cause and a valid cause, for evolution to take place. Therefore, in both cases, we will simply have to consider populations as they are, as of now.