FIGURE 13 COMPARISON OF TOTAL FOULING WEIGHT PER SQUARE 



FOOT ON STEEL TEST PANELS FOR 1 THROUGH 12-MONTHS 

 DURING 2- YEAR TEST PERIODS. 



per square foot during the same 6 months at Site 4, and for approxi- 

 mately the same period Site 3 bottom test cylinders were fouled 10.5 

 ounces per square foot. Site 4 cumulative panel coverage for 6 months 

 shown in Figure 12 was greater than for comparable panels for Sites 

 1 and 2 despite the lower weight per square foot relationship in Figure 

 11. This fact is indicative of variation in local fouling populations and 

 variations in species intensity. 



V. ORGANISMS 



A. Barnacles 



Barnacle fouling occurs as early as April-May in the 

 estuarine-influenced waters of Site 1 and May- June for the less 

 estuarine waters of Site 2 (Fig 14). The first barnacle set during the 

 calendar year for Sites 3 and 4 probably occurs in May- June. Maximum 

 attachment occurs later than the month of onset for all sites. Figure 

 14 shows peaks in May- June for Site 1, July- August for Site 2, and 

 probably July- August or August-September for Site 4 (Fig 15). As 

 indicated by Maloney (1958), Site 1 has a second peak set in September- 



15 



