Introduction Patterns - Alien Reptiles and Amphibians - page 46

Unsurprisingly, pathway importance varies geographically (Figs. 2.23-2.28).
Most introductions via the biocontrol and food pathways have been to North
America and the Pacific; most cargo introductions have been to these same two
areas as well as Australia; most nursery-trade introductions have been to North
America and the Caribbean; and most of the “intentional” and pet-trade introductions
have been to North America and Europe (Fig. 2.28). For each pathway, two recipi-
ent regions dominated introduction volume, together comprising from 48-80% of
all introductions within each pathway (Fig. 2.28).
Fig. 2.23 Relative importance of major introduction pathways in North America, as measured by
all introductions (solid bars) or only those leading to successful establishment (open bars)
Fig. 2.24 Relative importance of major introduction pathways in Europe, as measured by all
introductions (solid bars) or only those leading to successful establishment (open bars)