Powers: Recruitment as an evolving random process of aggregation and mortality 



365 



1 1 ,000 



School size (no. of fish) 



Appendix Figure 1 



School-size distribution at selected times. (A) School-size 

 distribution of a simulation starting with a disaggregated 

 initial condition, S=10 6 , n=10 _6 , where mortality is density- 

 independent (»! (/l ) and there is preferential attachment (w^). 

 (B) Distribution starting with an aggregated initial condition, 

 S=2xl0 6 , «=1.5xl0~ 6 , where mortality is density-dependent 

 proportional to schools im dN ) and with preferential attachment 

 (w a ). The dotted lines are the predictions of y = 1 + 1//3 from 

 Equation A2, horizontally offset for viewing. 



