Social effects on female ARS. In this model, we considered the effects of the survival and female ARS of other squirrels on the female ARS of focal animals. Survival of other squirrels was coded as survived (0.5) and died (−0.5), such that survival and mortality of other squirrels were equally distance-weighted.
| Variable . | Estimate ± SE . | Z value . | P . |
|---|---|---|---|
| Intercept | −2.52 ± 0.19 | −13.5 | <0.0001 |
| Age | 0.74 ± 0.08 | 9.17 | <0.0001 |
| Age2 | −0.10 ± 0.01 | −8.41 | <0.0001 |
| Study area (SU) | −0.16 ± 0.07 | −2.39 | 0.02 |
| Survival of other squirrels | 0.10 ± 0.05 | 2.30 | 0.02 |
| Mast (yes) | 1.53 ± 0.32 | 4.81 | <0.0001 |
| Reproduction of other squirrels | −0.35 ± 0.06 | −5.49 | <0.0001 |
| Mast (yes) × survival of other squirrels | −0.02 ± 0.08 | −0.21 | 0.83 |
| Mast (yes) × reproduction of other squirrels | 0.26 ± 0.11 | 2.26 | 0.02 |
| Variable . | Estimate ± SE . | Z value . | P . |
|---|---|---|---|
| Intercept | −2.52 ± 0.19 | −13.5 | <0.0001 |
| Age | 0.74 ± 0.08 | 9.17 | <0.0001 |
| Age2 | −0.10 ± 0.01 | −8.41 | <0.0001 |
| Study area (SU) | −0.16 ± 0.07 | −2.39 | 0.02 |
| Survival of other squirrels | 0.10 ± 0.05 | 2.30 | 0.02 |
| Mast (yes) | 1.53 ± 0.32 | 4.81 | <0.0001 |
| Reproduction of other squirrels | −0.35 ± 0.06 | −5.49 | <0.0001 |
| Mast (yes) × survival of other squirrels | −0.02 ± 0.08 | −0.21 | 0.83 |
| Mast (yes) × reproduction of other squirrels | 0.26 ± 0.11 | 2.26 | 0.02 |
Continuous fixed effects were standardized to a mean of zero and unit variance prior to analysis. For nominal fixed effects the level corresponding to the parameter is specified. The fitted model was a generalized linear mixed-effect model with a Poisson error distribution and a log link function. This model was based on 2933 litters by 1045 squirrels in 31 years. Residual deviance = 4460; residual df = 2920. Random effects: among-squirrel variance = 0.22; among-year variance in reproduction = 0.03; among-year variance in survival = 0.002; among-year variance = 0.47.
Social effects on female ARS. In this model, we considered the effects of the survival and female ARS of other squirrels on the female ARS of focal animals. Survival of other squirrels was coded as survived (0.5) and died (−0.5), such that survival and mortality of other squirrels were equally distance-weighted.
| Variable . | Estimate ± SE . | Z value . | P . |
|---|---|---|---|
| Intercept | −2.52 ± 0.19 | −13.5 | <0.0001 |
| Age | 0.74 ± 0.08 | 9.17 | <0.0001 |
| Age2 | −0.10 ± 0.01 | −8.41 | <0.0001 |
| Study area (SU) | −0.16 ± 0.07 | −2.39 | 0.02 |
| Survival of other squirrels | 0.10 ± 0.05 | 2.30 | 0.02 |
| Mast (yes) | 1.53 ± 0.32 | 4.81 | <0.0001 |
| Reproduction of other squirrels | −0.35 ± 0.06 | −5.49 | <0.0001 |
| Mast (yes) × survival of other squirrels | −0.02 ± 0.08 | −0.21 | 0.83 |
| Mast (yes) × reproduction of other squirrels | 0.26 ± 0.11 | 2.26 | 0.02 |
| Variable . | Estimate ± SE . | Z value . | P . |
|---|---|---|---|
| Intercept | −2.52 ± 0.19 | −13.5 | <0.0001 |
| Age | 0.74 ± 0.08 | 9.17 | <0.0001 |
| Age2 | −0.10 ± 0.01 | −8.41 | <0.0001 |
| Study area (SU) | −0.16 ± 0.07 | −2.39 | 0.02 |
| Survival of other squirrels | 0.10 ± 0.05 | 2.30 | 0.02 |
| Mast (yes) | 1.53 ± 0.32 | 4.81 | <0.0001 |
| Reproduction of other squirrels | −0.35 ± 0.06 | −5.49 | <0.0001 |
| Mast (yes) × survival of other squirrels | −0.02 ± 0.08 | −0.21 | 0.83 |
| Mast (yes) × reproduction of other squirrels | 0.26 ± 0.11 | 2.26 | 0.02 |
Continuous fixed effects were standardized to a mean of zero and unit variance prior to analysis. For nominal fixed effects the level corresponding to the parameter is specified. The fitted model was a generalized linear mixed-effect model with a Poisson error distribution and a log link function. This model was based on 2933 litters by 1045 squirrels in 31 years. Residual deviance = 4460; residual df = 2920. Random effects: among-squirrel variance = 0.22; among-year variance in reproduction = 0.03; among-year variance in survival = 0.002; among-year variance = 0.47.
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