Figure 22. 
Figure 23. 
1,152 
é 
1000 SN 
— FORT MACON 
oon EMERALD ISLE 
-— NOURISHMENT 
NUMBER PER m? 
MONTH 
Seasonal variations in density of D. parvula at the nourish- 
ment beach at Fort Macon, June 1977 to August 1978, and the 
comparison beach at Emerald Isle, September 1977 to August 
1978. The actual period of nourishment is represented by a 
slashed line below the X-axis. 
i 
— FORT MACON ; { 
. EMERALD 18tE; } 
-— NOURISHMENT i \ 
i i 
} 
H 
i 
7 
| 
I 
NUMBER PER m? 
Seasonal variations in density of D. vartabtlis at the nourish- 
ment beach at Fort Macon, June 1977 to August 1978, and the 
comparison beach at Emerald Isle, September 1977 to August 1978 
The actual period of nourishment is represented by a slashed 
line below the X-axis. 
42 
