Acer sp. 0.7


 0.3

0)
S0.2


 0.I
 0.1


 0


70% 50% 30%


Baccharis sp.


0.3 1


70% 50% 30% 10%


Clematis sp.


 0.2


 0.1


0


90% 70% 50% 30% 10%


Bacopa sp.


90% 70% 50% 30% 10%


Cyperus sp.


90% 70% 50% 30%


Light transmittance (%)


Figure 7.9.


90% 70% 50% 30% 10%


Light transmittance (%)


The Frequency of Occurrence of Understory Species (< Im in Height)
Under Varying Light Transmittance Classes. Those Species Occurring
at a Minimum of Ten Sampling Points Throughout the Chrono-Sequence
of Wetlands Are Presented. The X-Axis Is in Reverse Order So That
Species Occurring Under Low Light Transmittance Levels Occur on the
Right.


7-53


_______________ __--- -^- -, 4 a. ~- a


90%


 0.4


 0.3


. 0.2


 0.1


 0


90%


0.6


0.4

 0.2

 0


I I I I I I I


"' "


-'


Apios sp.


Il~l~n