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Table 2 Standardized regression coefficients and significance ( p ) of model variables describing body mass (log scale), straight line length (log scale), and body condition measures of springtime grizzly bear captures in Alberta, Canada

From: Environmental, biological and anthropogenic effects on grizzly bear body size: temporal and spatial considerations

Block (hypothesized) category and measurement variables

Mass

Length

Body condition

 

StD β

p

StD β

p

StD β

p

1) Biology and capture effects

      

  Age

1.663

<0.001

1.606

<0.001

1.898

<0.001

  Age2

-1.348

<0.001

-1.467

<0.001

-1.450

<0.001

  Adult Females (AF)

    

-0.367

<0.001

  Adult F w/ cubs (AFC)

    

-0.562

<0.001

  Male x Age

0.619

<0.001

0.570

<0.001

  

  Number of captures

    

-0.196

0.002

  Population density

      

2) Regional habitat productivity

      

  March precipitation

-0.255

<0.001

    

  Spring (May-Jun) temperature

  

0.202

0.002

  

  Alpine habitat use (HP)

-0.226

<0.001

    

3) Inter-annual climate variability

      

Maternal effects (B t-1 ):

      

  Summer (Jul-Aug) temperature

-0.220

<0.001

0.168

0.009

  

Natal effects (B t0 ):

      

  Spring (May-Jun) temperature

  

0.149

0.038

  

  Summer (May-Oct) temperature

0.154

0.013

    

  Winter (Dec-Mar) precipitation

0.173

0.001

    

  August precipitation

-0.115

0.043

    

  July precipitation

    

-0.248

0.002

Capture effects (C t ):

      

4) Local habitat quality

      

  Canopy variation (HP)

-0.112

0.009

    

  Regen. forest age variation (HP)

    

0.288

<0.001

5) Human footprint

      

6) Landscape change

  

0.199

0.013

  
  1. All measures of habitat use were based on global position system (GPS) telemetry data and relate to a habitat patch (HP) scale of a 30 m pixel (900 m2).