■ Agsm 

 Bogr 



1100-1 



1000- 



900- 



800- 



700- 



600- 



500 



400- 



300- 



200- 



100- 



1800-1 



1600- 



1400- 



1200- 



1000- 





800- 



600- 



400- 



200- 



1977 1978 1979 



1980 



Figure 6. Net aerial production of 

 two grasses in the 

 Agsin/Bogr community, 

 1977-1980. 



Figure 7. Net aerial production 

 of two grasses in the 

 Bogr/Agsm community, 

 1977-1980. 



■12- 



