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. 2021 Oct 13;288(1960):20211258. doi: 10.1098/rspb.2021.1258

Table 1.

Results of generalized additive mixed effect models (GAMMs) explaining variation in weaning mass as of function of intrinsic and extrinsic factors. (Models 1.a-1.h are the entire dataset and included MomID as a random effect. Models 2.a-2.d are the subset which included birth mass and maternal arrival mass. Models in bold were the best fit for each set.)

weanmass ∼
log-likelihood AICc R2 adj. n
intrinsic
 1.a. sex + s(MomAge) −6220.798 12 453.7 0.656 1504
 1.b. s(MomAge) −6229.672 12 469.4 0.650 1504
 2.a. PupBirthMass + Momage −351.740 712.0 0.402 89
 2.b. PupBirthMass + MomMass −364.370 737.2 0.205 89
extrinsic
 1.c. s(population) + s(ENSO3) + s(NOI) −5944.286 13 036.4 0.382 1504
 1.d. s(population) −5940.837 13 063.7 0.380 1504
 1.e. s(population) + PDO −5947.168 13 067.6 0.380 1504
 2.c. population + ENSO3 −600.106 1206.4 0.024 89
intrinsic + extrinsic
1.f. sex + s(MomAge) + s(population) + ENSO3 + s(NOI) 6188.196 12 400.6 0.668 1504
 1.g. sex + s(MomAge) + s(population) + PDO −6191.448 12 403.0 0.665 1504
 1.h. sex + s(MomAge) + s(population) −6194.996 12 406.1 0.664 1504
2.e. PupBirthMass + MomAge + ENSO3 346.927 711.7 0.457 89
 2.d. PupBirthMass + MomAge + population + ENSO3 −345.173 713.2 0.471 89