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Table 1 Time-and space-use metrics for polygons associated with receipt of acoustic transmissions. The metrics are summarized by density quantile. These density quantiles represent intensity of sampling coverage (25 % = high intensity, 75 % = low intensity). Polygon area and occupancy time are used to calculate the overall sampling effort (km 2/h) and estimate the transmission reception per unit sampling effort (TPUE)

From: A novel approach to quantifying the spatiotemporal behavior of instrumented grey seals used to sample the environment

Density quantile Number of transmissions Mean area (km 2) Mean time (h) TPUE (km 2/h)
0.25 21 0.21 ± 0.10 1.30 ± 0.16 0.74 ± 8.94
0.5 8 2.51 ± 1.18 2.58 ± 0.78 0.62 ± 1.83
0.75 4 6.59 ±2.87 4.17 ± 1.87 0.03 ± 1.26
  1. N.B. Seven transmissions were received outside of the 75% density quantile