Table 2 Summary of the results for the exponential decay regression, generalized additive model (GAM), and segmented and linear regression models, ordered according to their second-order Akaike information criterion (AICc) score and the absolute value of ΔAICc

Exponential decay

Altitude ~ 1015.00 × e^{(−0.003 × MEggs)}

42

0

1015.00 (± 52.27)

< 2e−16

NA

GAM

Altitude ~ s(MEggs, k = 4, sp = 0.1)

2.22·

3.68

987.65 (± 26.86)

< 2e−16

0.72

Segmented regression

segmented.lm[lm, seg.Z = ~ MEggs, control = seg.control (n.boot = 10)]

40

4.78

1010.13 (± 55.36)

< 2e−16

0.72

Linear model (lm)

Altitude ~ − 1.46 × MEggs + 904.29

42

10.27

904.29 (± 46.33)

< 2e−16

0.66