Survival models of Greater Sage-Grouse in northwestern South Dakota USA, 2016–2017, from model set 1 evaluating the effects of seasonal timing on survival. Akaike’s Information Criterion corrected for small sample size (AICc; Burnham and Anderson 2002); lowest AICc value = 203.64. ΔAICc is the difference in AICc relative to minimum AICc, wi is Akaike weight (Burnham and Anderson 2002) calculated across all models, and k is the number of parameters.
| Modela . | ΔAICc . | wi . | k . | Deviance . |
|---|---|---|---|---|
| {Pre(.), Nest(.) = EBR(.) = LBR(.)} | 0.00 | 0.24 | 2 | 199.63 |
| {Pre(.),Nest(.),EBR(.) = LBR(.)} | 0.45 | 0.19 | 3 | 198.08 |
| {Nest(.),Non-Nest(.)} | 1.70 | 0.10 | 2 | 201.34 |
| {Pre(.),Nest(.),EBR(.),LBR(.)} | 1.84 | 0.10 | 4 | 197.45 |
| {Pre(.),Nest(.) = EBR(.),LBR(.)} | 2.01 | 0.09 | 3 | 199.63 |
| {S(.)} | 2.27 | 0.08 | 1 | 203.91 |
| {EBR(.),Non-EBR(.)} | 3.23 | 0.05 | 2 | 202.86 |
| {Non-WNV(vector(.)), WNV(vector(.))} | 3.32 | 0.05 | 2 | 202.95 |
| {Pre(.) = Nest(.),EBR(.) = LBR(.)} | 3.85 | 0.03 | 2 | 203.48 |
| {Non-WNV(fqcy(.)), WNV(fqcy(.))} | 4.15 | 0.03 | 2 | 203.78 |
| {Pre(.) = Nest(.) = EBR(.),LBR(.)} | 4.19 | 0.03 | 2 | 203.83 |
| {Pre(.) = Nest(.),EBR(.),LBR(.)} | 5.23 | 0.02 | 3 | 202.85 |
| {S(t)} | 26.32 | 0.00 | 24 | 180.95 |
| Modela . | ΔAICc . | wi . | k . | Deviance . |
|---|---|---|---|---|
| {Pre(.), Nest(.) = EBR(.) = LBR(.)} | 0.00 | 0.24 | 2 | 199.63 |
| {Pre(.),Nest(.),EBR(.) = LBR(.)} | 0.45 | 0.19 | 3 | 198.08 |
| {Nest(.),Non-Nest(.)} | 1.70 | 0.10 | 2 | 201.34 |
| {Pre(.),Nest(.),EBR(.),LBR(.)} | 1.84 | 0.10 | 4 | 197.45 |
| {Pre(.),Nest(.) = EBR(.),LBR(.)} | 2.01 | 0.09 | 3 | 199.63 |
| {S(.)} | 2.27 | 0.08 | 1 | 203.91 |
| {EBR(.),Non-EBR(.)} | 3.23 | 0.05 | 2 | 202.86 |
| {Non-WNV(vector(.)), WNV(vector(.))} | 3.32 | 0.05 | 2 | 202.95 |
| {Pre(.) = Nest(.),EBR(.) = LBR(.)} | 3.85 | 0.03 | 2 | 203.48 |
| {Non-WNV(fqcy(.)), WNV(fqcy(.))} | 4.15 | 0.03 | 2 | 203.78 |
| {Pre(.) = Nest(.) = EBR(.),LBR(.)} | 4.19 | 0.03 | 2 | 203.83 |
| {Pre(.) = Nest(.),EBR(.),LBR(.)} | 5.23 | 0.02 | 3 | 202.85 |
| {S(t)} | 26.32 | 0.00 | 24 | 180.95 |
a Pre = pre-nesting season (April 1–21), Nest = nesting season (April 22 to June 9), EBR = early brood-rearing season (June 10 to July 28), LBR = late brood-rearing season (July 29 to September 15), Non-nest = pre-nesting, early brood rearing, and late brood rearing, Non-EBR = pre-nesting, nesting, and late brood rearing, Non-WNV(vector) = not considered WNV season using vector presence to define (April 1 to June 2), WNV(vector) = WNV season using vector presence to define (June 3 to September 15), Non-WNV(fqcy) = not considered WNV season using pathogen frequency to define (April 1 to July 21), WNV(fqcy) = WNV season using pathogen frequency to define (July 22 to September 15), (.) = constant survival, “=” seasons were set equal to one another.
Survival models of Greater Sage-Grouse in northwestern South Dakota USA, 2016–2017, from model set 1 evaluating the effects of seasonal timing on survival. Akaike’s Information Criterion corrected for small sample size (AICc; Burnham and Anderson 2002); lowest AICc value = 203.64. ΔAICc is the difference in AICc relative to minimum AICc, wi is Akaike weight (Burnham and Anderson 2002) calculated across all models, and k is the number of parameters.
| Modela . | ΔAICc . | wi . | k . | Deviance . |
|---|---|---|---|---|
| {Pre(.), Nest(.) = EBR(.) = LBR(.)} | 0.00 | 0.24 | 2 | 199.63 |
| {Pre(.),Nest(.),EBR(.) = LBR(.)} | 0.45 | 0.19 | 3 | 198.08 |
| {Nest(.),Non-Nest(.)} | 1.70 | 0.10 | 2 | 201.34 |
| {Pre(.),Nest(.),EBR(.),LBR(.)} | 1.84 | 0.10 | 4 | 197.45 |
| {Pre(.),Nest(.) = EBR(.),LBR(.)} | 2.01 | 0.09 | 3 | 199.63 |
| {S(.)} | 2.27 | 0.08 | 1 | 203.91 |
| {EBR(.),Non-EBR(.)} | 3.23 | 0.05 | 2 | 202.86 |
| {Non-WNV(vector(.)), WNV(vector(.))} | 3.32 | 0.05 | 2 | 202.95 |
| {Pre(.) = Nest(.),EBR(.) = LBR(.)} | 3.85 | 0.03 | 2 | 203.48 |
| {Non-WNV(fqcy(.)), WNV(fqcy(.))} | 4.15 | 0.03 | 2 | 203.78 |
| {Pre(.) = Nest(.) = EBR(.),LBR(.)} | 4.19 | 0.03 | 2 | 203.83 |
| {Pre(.) = Nest(.),EBR(.),LBR(.)} | 5.23 | 0.02 | 3 | 202.85 |
| {S(t)} | 26.32 | 0.00 | 24 | 180.95 |
| Modela . | ΔAICc . | wi . | k . | Deviance . |
|---|---|---|---|---|
| {Pre(.), Nest(.) = EBR(.) = LBR(.)} | 0.00 | 0.24 | 2 | 199.63 |
| {Pre(.),Nest(.),EBR(.) = LBR(.)} | 0.45 | 0.19 | 3 | 198.08 |
| {Nest(.),Non-Nest(.)} | 1.70 | 0.10 | 2 | 201.34 |
| {Pre(.),Nest(.),EBR(.),LBR(.)} | 1.84 | 0.10 | 4 | 197.45 |
| {Pre(.),Nest(.) = EBR(.),LBR(.)} | 2.01 | 0.09 | 3 | 199.63 |
| {S(.)} | 2.27 | 0.08 | 1 | 203.91 |
| {EBR(.),Non-EBR(.)} | 3.23 | 0.05 | 2 | 202.86 |
| {Non-WNV(vector(.)), WNV(vector(.))} | 3.32 | 0.05 | 2 | 202.95 |
| {Pre(.) = Nest(.),EBR(.) = LBR(.)} | 3.85 | 0.03 | 2 | 203.48 |
| {Non-WNV(fqcy(.)), WNV(fqcy(.))} | 4.15 | 0.03 | 2 | 203.78 |
| {Pre(.) = Nest(.) = EBR(.),LBR(.)} | 4.19 | 0.03 | 2 | 203.83 |
| {Pre(.) = Nest(.),EBR(.),LBR(.)} | 5.23 | 0.02 | 3 | 202.85 |
| {S(t)} | 26.32 | 0.00 | 24 | 180.95 |
a Pre = pre-nesting season (April 1–21), Nest = nesting season (April 22 to June 9), EBR = early brood-rearing season (June 10 to July 28), LBR = late brood-rearing season (July 29 to September 15), Non-nest = pre-nesting, early brood rearing, and late brood rearing, Non-EBR = pre-nesting, nesting, and late brood rearing, Non-WNV(vector) = not considered WNV season using vector presence to define (April 1 to June 2), WNV(vector) = WNV season using vector presence to define (June 3 to September 15), Non-WNV(fqcy) = not considered WNV season using pathogen frequency to define (April 1 to July 21), WNV(fqcy) = WNV season using pathogen frequency to define (July 22 to September 15), (.) = constant survival, “=” seasons were set equal to one another.
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