Table 4 Validation of the drift dive methodology with 10 independent Macquarie Island seals.

From: A quantitative, hierarchical approach for detecting drift dives and tracking buoyancy changes in southern elephant seals

Seal id

Trip

N

Rd

%d

RDd

% Dd

b88904pb

pb

4376

72

1.65

66

93.05

c16204pb

pb

6287

87

1.38

86

98.85

c31204pb

pb

5848

68

1.16

61

89.7

c69904pb

pb

2867

197

6.87

180

91.37

c79004pb

pb

4828

80

1.66

68

85

h28504pb

pb

3921

64

1.63

60

93.75

c16305pm

pm

11159

240

2.23

160

66.66

f99305pm

pm

10034

220

2.27

171

77.72

h23305pm

pm

12331

732

6.09

717

97.95

h83305pm

pm

10011

268

2.74

225

83.95

Total

 

77179

2246

2.82

1972

87.8

  1. Seal id = reference code for each individual tag/seal. Trip: pb = post-breeding trip, pm = post-moulting trip. N = Total number of dives recorded by each tag. Rd = number of retained dives after the application of our method. %d = proportion of dives retained from the total number of dives recorded. Rdd = number of retained drift dives. %Dd = proportion of the retained dives that were true drift dives, as determined by visual inspection of all retained dives using the original high resolution time-depth profiles.
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