-20 



M. 

 -30 



-10 



FT. 50 40 30 20 10 

 J J U^ I 



I 

 M, 15 



Fig. 141. — Profile diagram of primary mixed tropical rain forest, Moraballi Creek, 

 British Guiana, showing all trees over 4-6 metres high on astrip about 45 metres 

 long and 76 metres wide. (After Davis & Richards.) 



FT. 100 80 60 40 20 



J UJ I 



' 1 ' 1 ' ' I ' '1 



M. 30 



20 



10 



Fig. 142. — Profile diagram of climax evergreen forest in Trinidad, British West 



Indies. The community is a consociation of Mora (Mora excelsa, marked M) up 



to about 45 metres high. The diagram represents a strip about 65 metres long 



and 76 metres wide. (After Beard.) 



426 



