o 



B. 



occupied yearlong, long-term habitat 

 unoccupied yearlong, long-term habitat 

 habitat during favorable environmental conditions 

 and/or with use of seasonal migratory behavior (occupied) 



as above (unoccupied) 



Legend as in A. 



C. 



Legend as in A. 



Figure 12.3 





A schematic 

 over time 

 conditions . 

 habitat by 

 represented 

 population 



near habitat fill (C) 



representation of habitat fill 



given favorable environmental 



The progressive filling of 



dispersion and dispersal is 



in consecutive order from a 



low (A) through mid-fill (B) to 



326 



