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Table 2 Summary of model selection information with 10 blue sharks in the northwestern Pacific Ocean

From: Estimation of mean movement rates for blue sharks in the northwestern Pacific Ocean

Model

Linear predictor

DF

ΔAIC

ΔBIC

Convergence

0

Null

795

1984

1974

Yes

1

log(hours)

794

10

5

Yes

2

Random (ID)

793

1883

1878

Yes

3

Random (ID) + log(hours)

792

0

0

Yes

4

Random (ID) + log(hours) + as.factor (sex)

791

2

7

Yes

5

Random (ID) + log(hours) + as.factor (movement direction)

789

0

14

Yes

6

Random (ID) + log(hours) + as.factor (season)

789

1

15

Yes

7

Random (ID) + log(hours) + as.factor (season) + as.factor (movement direction)

786

2

30

No

8

Random (ID) + log(hours) + as.factor (sex) + as.factor (season)

788

3

21

Yes

9

Random (ID) + log(hours) + as.factor (sex) + as.factor(movement direction)

788

2

21

Yes

10

Random (ID) + log(hours) + as.factor (sex) + as.factor (movement direction) + as.factor (season)

785

4

36

No

  1. DF degree of freedom, %DE percentage of deviance explained, ΔAIC and ΔBIC the reduction in AIC and BIC from the best-fitting model; log (hours) logarithmic elapsed time in hours between two locations, ID random effects of behavioral differences among individuals. The selected model is Model 3