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Table 3 Occurrence of prey capture attempts in SES dives

From: From high-resolution to low-resolution dive datasets: a new index to quantify the foraging effort of marine predators

  Intensified foraging effort Transit
N PrCA/segment
 High resolution 2.5 ± 0.02 0.6 ± 0.007
 Low resolution 3.9 ± 0.04 0.9 ± 0.01
PrCA rate (n/min of segment duration)
 High resolution 1 ± 0.007 0.3 ± 0.003
 Low resolution 0.6 ± 0.006 0.2 ± 0.003
% of total PrCA
 High resolution 77 23
 Low resolution 68 32
  1. Number of prey capture attempts (PrCA) and rate of PrCA per segment according to the foraging behaviour (i.e. hunting or transit) associated with the corresponding segment (mean ± SE from data pooled for the two SES). Percentages of total PrCA were calculated on the whole dataset for both resolutions independently. Hunting phases of high-resolution dives (vertical sinuosity <0.9) and low-resolution dives (segments associated with vertical velocity ≤0.4 m s−1) indicate parts within a dive where a seal intensifies its foraging behaviour