2. Effects of pollen limitation on dispersal unit and seed
traits
PL can quantitatively and qualitatively affect the reproductive success
of plants dispersed by animals (Ashman et al. 2004a; Knightet al. 2005). In fact, most of the physiological mechanisms
underlying these effects, especially the qualitative ones, are
relatively unknown, and little information that exists has not yet been
synthesized. For this reason, we summarize some of the main effects of
PL on dispersal unit traits, focusing on the traits that could be
related to seed dispersal.