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Table 3 Tagged belugas from the Eastern Beaufort Sea during 2018 and 2019 within the geographic extent of Dolly Varden in the spatial polygon outlined in Fig. 1

From: Predation of archival tagged Dolly Varden, Salvelinus malma, reveals predator avoidance behaviour and tracks feeding events by presumed beluga whale, Delphinapterus leucas, in the Beaufort Sea

Beluga ID ARGOS PTT number Deployment date (UTC) Duration in Dolly Varden spatial polygon (days) Mean (± SD) displacement distance over 20 h in Dolly Varden spatial polygon (km) Proportion of time in surface 2.5 m during July outside Dolly Varden spatial polygon (%) Proportion of time in surface 2.5 m during July inside Dolly Varden spatial polygon (%)
LC2018#1 174965 03/07/18 4.18 42.4 (19.4) 36.9 70.2
LC2018#2 174967 04/07/18 0.27 NA 45.4 42.3
LC2018#3 174962 06/07/18 5.97 49.5 (26.4) 37.3 79.4
LC2018#4 174963 08/07/18 0.88 NA 40.9 91.8
LC2018#5 175284 08/07/18 0.85 NA NA NA
LC2018#6 174966 08/07/18 6.69 40.3 (23.4) 41.2 67.1
LC2018#7 175278 09/07/18 7.83 39.9 (13.2) NA NA
LC2018#8 174969 09/07/18 4.40 42.2 (19.1) 29.3 85.8
LC2018#10 175282 12/07/18 4.55 43.4 (9.7) NA NA
LC2019#2 174972 29/06/19 8.49 42.2 (19.1) 53.7 92.9
LC2019#3 174964 30/06/19 3.92 46.4 (24.9) 43.4 87.7
LC2019#6 174976 03/07/19 10.15 42.2 (39.2) 72.4 92.2
LC2019#14 179901 10/07/19 4.45 58.1 (15.5) 41.9 81.6
RD2019#9 179915 12/07/19 4.42 59.2 (26.0) NA NA
RD2019#18 179902 13/07/19 7.30 46.6 (19.0) 39.2 68.9
RD2019#19 179904 13/07/19 4.14 52.0 (27.3) 33.8 73.7
RD2019#20 179899 13/07/19 5.40 49.8 (18.6) 30.1 66.6
Grand mean    4.9 46.7 42.0 76.9
SD    2.7 6.0 11.2 14.3
  1. Tagged belugas that transmitted for < 4 days were not included due to early tag failure or uncertainty about tag performance. Other tags not programmed to collect time-series depth data or underway location were also excluded. Displacement distance and proportion of time in surface 2.5 m only calculated for belugas that occupied the spatial polygon for ≥ 3 days. Calculations from the spatial polygon are from June 29 (earliest deployment date) to July 31