Skip to main content

Table 2 Minimal GLMM of high tide travel distance

From: Disturbance increases high tide travel distance of a roosting shorebird but only marginally affects daily energy expenditure

Fixed effects β SE(β) df χ 2 p
Intercept − 2.00 0.59    
Total immediate displacement (km) 0.50 0.24 1 4.66 0.031
Maximum water level (m) 3.18 0.63    
Start roost
 Mid 0.96 0.38    
 South 1.57 0.33    
Wind speed (10 km/h) 0.18 0.15    
Maximum water level × wind speed − 0.33 0.13 1 5.97 0.015
Maximum water level × start roost    2 27.04 < 0.001
 Mid − 1.17 0.37    
 South − 1.70 0.31    
  1. GLMM was created with a gamma response distribution and a log link function. High tide travel distance in km, from 2 h before high tide to 2 h after. Variance estimates for random effects individual bird and individual high tide period are 0.03 and 0.07, respectively. n = 263 bird high tides