30 



20 



10 

























1 ! 1 1 1 





— •— SITE 1 1956-1958 

 .— +— . SITE 2 1957-1959 



— 











\ 

































A 



v 



























I 





\ 























C£Jt= 



s 





V 



— »— 



M±S 















APR. MAY JUN. JUL. AUG. SEP. OCT. NOV. DEC. JAN. FEB. MAR. APR. MAY JUN. 

 FIGURE 29 ENCRUSTING BRYOZOANS, MONTHLY. 



— •— - SITE I 1956-1958 



. — + — • SITE 2 1957-1959 



--o-«- SITE4 1959 



A SITE 3 BOTTOM TEST 

 CYLINDER 1959 



▲ SITE 4 BOTTOM TEST 

 CYLINDER 1959 



NUMBERS ADJACENT TO POINTS 

 INDICATE TOTAL MONTHS EXPOSED 





APR. MAY JUN. JUL. AUG. SEP. OCT. NOV. DEC. JAN. FEB. MAR. APR. MAY JUN. 

 FIGURE 30 ENCRUSTING BRYOZOANS, CUMULATIVE. 



Initial jingle shell set at Site 1 occurs in June-July, a month earlier 

 than previously recorded, but terminates at approximately the same 

 time (September-October). No jingle shells occurred on monthly panels 

 from October-November through May- June. August-September was the 

 peak monthly set period with over a hundred jingle shells per square 

 foot. In contrast, no jingle shells occurred on monthly Site 2 panels, 

 or on any Site 4 panels from 1 through 6 months, or bottom test 

 cylinders from Sites 3 and 4 (Fig 17). Jingle shells occurred on Site 1 

 cumulative 3-month April- July through the 1 1 -month April-March 

 panels (Fig 32), whereas they occurred only on the 2-month June- 

 August and the 5-month June-November Site 2 .panels (Fig 33). Site 

 1 cumulative peak occurred on the 6-month April-October panel. 

 The total lack of jingle shells on the 12-month April- April Site 1 

 panel for 2 years cannot be explained. 



32 



