26 



higher than constructed flat values by 1 taxon/core (Figure 3-14). A significant interaction 

 factor was also encountered in the ANOVA for total numerical abundance (Table 3-9). 

 Linear contrasts of site means over time resulted in only one significant comparison 

 (p<0.01), the constructed flat versus reference area comparison for 1990. At this time 

 abundance was far greater at the constructed flat than the reference area (Figure 3-15). 

 Analysis of the total biomass data resulted in only the time factor (year) being significant 

 (p<0.05) (Table 3-10). Tukey tests of the annual means indicated that only the lowest 

 (1991) and highest (1998) biomass values were significantly different (p<0.05) (Figure 3- 

 16). 



Table 3-8. Sheep Island Infaunal Taxa Richness ANOVA Results 



Source DF Sum Sq. F Ratio p 



Site 



1 



38.5333 



4.1620 



0.0427 



Year 



4 



187.8952 



5.0737 



0.0006 



Site*Year 



4 



354.4571 



9.5713 



< 0.0001 



Error 



200 



1851.6667 



9.258 





Linear Contrasts Results 



1990 1991 1992 1994 1998 



Estimate 5.0667 -1.8 -2.067 0.9333 2.4 



t Ratio 4.5602 -2.291 -2.631 0.84 2.1601 



Prob>|t| < 0.0001 0.023 0.0092 0.4019 0.032 



Table 3-9. Sheep Island Infaunal Total Abundance ANOVA Results 

 Source DF Sum Sq. F Ratio p 



Site 



1 



4.1234 



28.8302 



< 0.0001 



Year 



4 



5.2992 



9.2627 



< 0.0001 



Site*Year 



4 



6.5704 



11.4846 



< 0.0001 



Error 



200 



28.6052 



0.1430 





Linear Contrasts 



1990 1991 1992 1994 1998 



Estimate 1.0382 -3e-4 0.0111 0.1109 0.3231 



Std Error 0.1381 0.0976 0.0976 0.1381 0.1381 



Prob>|t| < 0.0001 0.9972 0.9097 0.4229 0.0203 



Ecological Monitoring of a Constructed Intertidal Flat at Jonesport, Maine 



