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Table 2 Two-way ANOVA testing variation of Woodpigeon’s densities according to flight directions, study months and their interaction (AIC = 450.4) in north Algeria

From: Rapid increase in numbers and change of land-use in two expanding Columbidae species (Columba palumbus and Streptopelia decaocto) in Algeria

Variation sources

DF

SS

MS

F

P

Flight directions

7

11900.8

1700.1

10.9

<0.001

Study months

2

3165.1

1582.5

10.2

<0.001

Interaction

14

11851.6

846.5

5.4

<0.001

Residual error

48

7458.0

155.4

  

Total

71

34375.5

484.2

  
  1. The same model without the interaction of two factors revealed an AIC = 461.6