Analyses of variance (ANOVA), both completely randomized and randomized block 

 design, and Student's t-tests were employed for statistical analysis as was ap- 

 propriate. Where the ANOVA indicated significant differences (p<0.05), Tukey's Stu- 

 dentized Range Test was used to determine which cells differed significantly 

 (p<0.05). 



RESULTS 



Cage effects: corals 



After the year- long 

 reefs, all being on verti 

 ites and Agaricia formed 

 Difficulty with j_n situ i 

 meter prevented assigning 

 Agaricia sp. , approximate 

 were P. astreoides . 



A Student's t-test ind 

 vs . Agaricia on any reef 

 Substantially more corals 

 and 90 respectively) tha 

 showed that the mean numb 

 different, nor was the me 



immersion, a total of 267 corals were found on the fifteen 

 cal edges. This included only two genera of corals: Por - 

 19% and 8!L% of the total number of corals, respectively, 

 dentif ication of corals less than approximately 6mm in dia- 

 species to the smallest corals. However, of the larger 

 ly 2/3 were A. agaricites and 1/3 A. lamarki . All Porites 



icated no significant differences in the numbers of Porites 

 treatment; thus all further analyses pooled both genera. 



settled on uncaged and cage control reefs (totals of 123 

 n on caged reefs (54 total). However, a one-way ANOVA 

 er of corals on the three reef types was not significantly 

 an diameter (Table 1). 



Table 1. Number of corals on each reef; total number and mean for each 

 treatment type; mean diameter of corals for each treatment type. Numbers 

 in parentheses are standard deviations; n.s. = not significant (p<0.05). 



Caged Uncaged Cage Control 



Rep.#l 

 Rep. #2 

 Rep. #3 

 Rep. #4 



Rep. #5 



Total 



Mean number 



10 



19 



9 



1 



15 



12 

 26 



41 

 34 

 10 



54 



10.8 

 (±6.8) 



n. s. 



123 

 24.6 

 (±13.5) 



n. s. 



14 

 28 

 20 

 10 

 18 



90 



18.0 

 (±6.8) 



Mean diameter 

 (mm) 



5.3 

 (±3.0) 



n. s. 



6.8 

 (±3.0) 



n. s. 



5.4 

 (±2.6) 



60 -i 



50 - 



Figure 1 



Diameter (mm) 

 Total number of corals in each size class for each treatment type. 



91 



