Table 2.
Three-way random intercept and random slopes mixed model analysing the decomposition score of large birds in three different seasons (summers, late autumn and early spring) and two study areas (islands of Lanzarote and Fuerteventura).
| Fixed effects | p.eta2 | SS | nDF | dDF | F | P |
|---|---|---|---|---|---|---|
| Days since placement (T) | 91.6 | 0.708 | 1 | 13 | 510.4 | ≪ 0.001 |
| Island (I) | 0.1 | 0.002 | 1 | 14 | 0.8 | 0.396 |
| Season (S) | 3.6 | 0.085 | 2 | 10 | 9.1 | 0.006 |
| Interaction T*I | 0.3 | 0.007 | 1 | 14 | 1.8 | 0.199 |
| Interaction T*S | 2.0 | 0.053 | 2 | 101 | 5.4 | 0.006 |
| Interaction I*S | 1.3 | 0.334 | 2 | 10 | 3.4 | 0.073 |
| Interaction T*I*S | 0.6 | 0.015 | 2 | 101 | 1.5 | 0.221 |
p.eta2, Partial eta squared measuring the proportion of variance accounted for by a given fixed effect after accounting for that explained by other predictors in the model; SS, Sums of squares. nDF, Numerator degrees of freedom of the fixed effects (days since the placement of carcasses in the field has been treated as an ordinal factor, thus having one degree of freedom in the linear contrast of its levels). dDF, Denominator degrees of freedom using the Kenward–Roger method.