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Contents
7 Traits Associated with Invasiveness in Alien Plants:
Where Do we Stand? . . . . . . . . . . . . . . . . . . . . . . 97
Petr Pyšek and David M. Richardson
7.1 History of the Search for Traits and Shifts in Research Focus 97
7.2 Comparative Analyses of Multispecies Datasets:
Every Picture Tells a Story . . . . . . . . . . . . . . . . . . . 99
7.2.1 Methodological Approaches: what is Being Compared? . . . 99
7.2.2 Data, Scale and Analysis . . . . . . . . . . . . . . . . . . . . 106
7.2.3 Main Findings of Comparative
Multispecies Studies (1995–2005) . . . . . . . . . . . . . . . 107
7.2.4 Biases to Bear in Mind: Residence Time, Scale and Stage . . 111
7.2.5 Message from Comparative Multispecies Studies . . . . . . 112
7.3 Studies of Congeners and Confamilials . . . . . . . . . . . . 113
7.3.1 Assumptions for Congeneric Studies . . . . . . . . . . . . . 114
7.3.2 Searching for Generalities Within Genera . . . . . . . . . . . 114
7.4 Combining Approaches: Pooling the Evidence . . . . . . . . 119
7.5 Conclusions: Where Do we Stand? . . . . . . . . . . . . . . . 120
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8 Do Successful Invaders Exist? Pre-Adaptations
to Novel Environments in Terrestrial Vertebrates . . . . . . 127
Daniel Sol
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.2 Framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.3 Do Successful Invaders Exist? . . . . . . . . . . . . . . . . . 129
8.4 What Makes a Species a Successful Invader? . . . . . . . . . 132
8.5 Conclusions and Future Directions . . . . . . . . . . . . . . 137
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139