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Table 1 Count of predator tagged smolts detected for both the biased and clean groups detection histories at successive acoustic receiver arrays

From: Extent of predation bias present in migration survival and timing of Atlantic salmon smolt (Salmo salar) as suggested by a novel acoustic tag

Location Tags detected (%) Inferred mean cumulative survival Maximum migration time to array (day) Minimum migration time to array (day)
Array (km) Biased group Clean group Group mean difference KDE shift Group mean difference KDE shift Group mean difference KDE shift
66 41 (82) 36 (72) 0.093 0.566 0.558 0.112 0.007 0.021
54 30 (60) 24 (48) 0.115 0.588 0.412 0.095 0.175 0.048
44 17 (34) 15 (30) 0.062 0.351 0.432 0.146 0.074 0.047
37 16 (32) 13 (26) 0.059 0.370 0.182 0.098 0.019 0.042
27 12 (24) 11 (22) 0.022 0.166 0.180 0.097 0.078 0.058
  1. The extent of bias present in migration timing and apparent survival at successive acoustic receiver arrays are presented as the difference in means and the proportion of the joint kernel density estimate (KDE) areas for both groups that does not overlap