20 n 



18- 



16 



14- 



12- 



^ 10 

 o. 

 V) 



8- 



6- 



4- 



2- 



Species per 0.1 m^ plot 



Species per 20 plots 



Species per 0.1 m^ plot 





W-" 



1978 



— I \ 



1979 1980 



20-1 • Species per 20 plots 



18- 



16- 



14- 



12 - 



^ lOH 



a. 



8- 



6- 



4- 



— I 1 



1978 1979 



1980 



Figure 26. Species density in the 



Arca/Agsm/Bogr community, 

 1978-1980. 



Figure 27. Species density in the 

 Stco-Agsm/Bogr 

 community, 1978-1980. 



-28- 



