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Table 1.

Summary of the full factorial ANOVA analysis of the effect of three factors of wave action and month on thread production over a 48 h period in Mytilus edulis

SourceNumerator d.f.Denominator d.f.FP-value
Month 123 9.36 <0.01 
Flow 123 130.25 <0.001 
Accel 128 2.53 0.11 
Load 128 11.62 <0.01 
Month×Flow 123 9.68 <0.001 
Month×Accel 128 1.64 0.19 
Month×Load 128 1.32 0.27 
Flow×Accel 478 1.03 0.31 
Flow×Load 478 3.75 0.05 
Accel×Load 478 0.10 0.75 
Month×Flow×Accel 478 2.25 0.10 
Month×Flow×Load 478 0.61 0.54 
Month×Accel×Load 478 3.73 0.02 
Flow×Accel×Load 478 0.08 0.77 
Month×Flow×Accel×Load 478 2.65 0.07 
SourceNumerator d.f.Denominator d.f.FP-value
Month 123 9.36 <0.01 
Flow 123 130.25 <0.001 
Accel 128 2.53 0.11 
Load 128 11.62 <0.01 
Month×Flow 123 9.68 <0.001 
Month×Accel 128 1.64 0.19 
Month×Load 128 1.32 0.27 
Flow×Accel 478 1.03 0.31 
Flow×Load 478 3.75 0.05 
Accel×Load 478 0.10 0.75 
Month×Flow×Accel 478 2.25 0.10 
Month×Flow×Load 478 0.61 0.54 
Month×Accel×Load 478 3.73 0.02 
Flow×Accel×Load 478 0.08 0.77 
Month×Flow×Accel×Load 478 2.65 0.07 

Owing to the large number of factors, this analysis was performed in SAS using the Proc Mixed procedure where threads produced (per 48 h) was the dependant variable and the independent variables were month in which the experiment was performed (Month), level of flow (Flow), and presence or absence of acceleration (Accel) and byssal loading (Load). Instead of the sum of squares, this procedure provides the degrees of freedom (d.f.) for each test performed in the model. P<0.05.

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