|  | 
 Table 6. The number of species per region in bold, the number of shared species between the regions (lower left), and Sørensen's Index of similarity (upper right).
 
|  | Galápagos | Coastal | Andean | Amazonian |  | Galápagos | 699 | 0.14 | 0.06 | 0.06 |  | Coastal | 371 | 4463 | 0.27 | 0.31 |  | Andean | 294 | 1956 | 9865 | 0.24 |  | Amazonian | 172 | 1438 | 1803 | 4857 |  
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