Ecology of the Cincinnati Region 
203 
the same banding that was noted in the first zone. The trees here are 
from eight to ten feet tall. Herbaceous plants are not abundant, but 
are represented by a mixture of beech herbs with those of later asso¬ 
ciations. 
Competition becomes keener with the increase in size of individuals. 
A large number of the trees which started die out; and those remaining 
are standing farther apart. Banding, even if it once existed, is less ap¬ 
parent in later stages of the succession. 
Fig. 56. Within the third zone of this flood plain formation. 
In the next association, the third flood plain zone, fig. ^6, willow 
and poplar do not everywhere hold the ascendency in numbers that was 
once theirs. Silver maple is now proportionately more abundant than 
in the two previous zones. This is an association of small flood plain 
trees. The compact growth of the second zone, which was due to the 
bushy character of its trees is now gone. Here there is very little her¬ 
baceous or low woody growth. A few plants of wood nettle (Laportea. 
canadensis) and a little poison ivy are all that is seen. Of all the asso- 
