Table 1.

Tests and p-values of previous success, age and food supply effects on subsequent survival and reproduction (weaning success and the number of weaned juveniles) for female North American red squirrels at Kluane, Yukon Territory, Canada. (Previous success corresponds to a two-modality variable: females that weaned 1 or more juveniles and females that did not wean any juvenile, and age corresponds to a four modality variable: yearling, 2–3 years, 4–5 years, 6 years or above. The results are from type 3 tests for fixed effects. For the survival analysis, n=846 observations performed on 309 individuals; for the weaning success probability analysis, n=631 observations performed on 249 individuals; for the number of weaned juveniles analysis, n=356 observations performed on 184 individuals.)

	fixed effects				random effects (estimate±s.e.)
	previous success	age	food supply	previous success×age	previous success×food supply	year	individual	R2
survival	F1,822=5.42, p=0.020	F3,822=8.10, p<0.0001	F1,822=0.04, p=0.84	F3,822=5.31, p=0.0013	F1,822=0.08, p=0.78	0.33±0.20		0.19a
weaning success probability	F1,607=0.28, p=0.60	F3,607=4.29, p=0.0052	F1,607=0.99, p=0.32	F3,607=0.13, p=0.94	F1,607=0.10, p=0.75	0.54±0.28	−0.017±0.067	0.21a
number of weaned juveniles	F1,332=0.07, p=0.79	F3,332=0.16, p=0.92	F1,332=0.72, p=0.40	F3,332=0.06, p=0.98	F1,332=0.58, p=0.45	0.029±0.017	0.0018±0.024	0.13b

^aMax-rescaled R² of Nagelkerke (1991) from a logistic regression with year included as a fixed effect, and no individual random effect.

^bCalculated as $1-(\sum {(y_i-{\hat{y}}_i)}^2/\sum {(y_i-\overline{Y})}^2)$, where $\overline{Y}$ represents the average number of weaned juveniles; ${\hat{y}}_i$ the predicted number of weaned juveniles for individual i; and y_i the observed number of weaned juveniles for individual i.