Table 2 Overview of the (G) LMMs conducted to investigate tag impacts on foraging trips and diving behaviour
From: Acute impacts of biologging devices on the diving behaviour of Manx shearwaters
Response variable | Fixed effects | Random effect | Autocorrelation term |
|---|---|---|---|
Foraging trip characteristics | |||
log (maximum trip range) | Tag type + scale(day of the year) | Bird ID | – |
Speed | Tag type + scale(day of the year) | Bird ID | – |
Time spent in ARS* per foraging trip | Tag type + scale(day of the year) + offset(log(Foraging trip duration)) | Bird ID | – |
Number of dives per hour of foraging trip | Tag type + scale(day of the year) | Bird ID | – |
Total dive duration per hour of foraging trip | Tag type + scale(day of the year) | Bird ID | – |
Dive characteristics | |||
Dive duration | Tag type + scale(day of the year) + scale(solar angle) | Bird ID | corCAR1(form = ~ Date_Time | ID) |
log(dive depth) | Tag type + scale(day of the year) + scale(solar angle) | Bird ID | corCAR1(form = ~ Date_Time | ID) |
log(time interval between dives) | Tag type + scale(day of the year) + scale(solar angle) + scale(log(dive depth)) | Bird ID | corCAR1(form = ~ Date_Time | ID) |
Descent rate | Tag type + scale(solar angle) + scale(dive depth) | Bird ID | – |
Ascent rate | Tag type + scale(solar angle) + scale(dive depth) | Bird ID | – |
Dive shape** | Tag type + scale(day of the year) + scale(solar angle) + scale(Distance from the colony) | Bird ID | – |
Bottom time*** | Tag type + scale(solar angle) | Bird ID | – |