200 
Ohio Biological Survey 
dent on the slope and breadth of the flood plain (sec fig. 55J. The lower 
shore association (zone I) and zone I of the flood plain forest are 
identical. But in areas of steadily advancing flood plain forest, the 
upper shore is usually occupied by an association composed largely of 
young trees. A general view of a forested area on the flood plain of 
the Little ]\Iiami river near Gwendolyn is shown in fig. jj. 
The succession commences with the scattered willows or poplars on 
the margin of depositing shores. The number of tree seedlings in the 
Fig. 53. General view of an area of flood plain forest on the Little Miami river 
at Gwendolyn. 
herbaceous zones of the shore is usually few, indicating a very gradual 
advance of trees. In rare instances, however, seedlings almost complete¬ 
ly take possession of the beach producing a distinct zone. When this 
is the case, the seedlings are all of the same age and height, and if more 
than one species are represented in the zone, they often produce distinct 
bands. Fig. 5^, which is a near view of the flood plain forest seen on 
the right hand side of /ig. 55, shows in the foreground a banded zone of 
