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Table 6 Correlations between principal component weights and behavioral metrics as part of two pattern-recognition procedures

From: Diagnosing predated tags in telemetry survival studies of migratory fishes in river systems

Behavioral metric Smolt-only Multispecies
Axis 1 (38%) Axis 2 (18%) Axis 3 (12%) Axis 1 (36%) Axis 2 (17%) Axis 3 (14%)
Residence time (mean) 0.70 (0.03) − 0.42 (0.04) − 0.12 (0.04) 0.68 (0.04) − 0.45 (0.06) 0.24 (0.19)
Migration rate (mean) − 0.38 (0.05) 0.50 (0.06) 0.69 (0.05) − 0.37 (0.06) 0.79 (0.03) 0.25 (0.09)
Visits (count) 0.84 (0.01) − 0.20 (0.03) 0.24 (0.03) 0.79 (0.03) − 0.03 (0.07) 0.42 (0.2)
Distance (sum) 0.78 (0.02) − 0.06 (0.05) 0.30 (0.04) 0.71 (0.03) 0.31 (0.06) 0.42 (0.16)
Upstream transitions 0.65 (0.03) 0.65 (0.04) − 0.19 (0.04) 0.66 (0.04) 0.40 (0.08) − 0.46 (0.31)
Detections in high-risk zones 0.64 (0.04) − 0.38 (0.05) 0.05 (0.06) 0.60 (0.05) − 0.23 (0.07) 0.16 (0.1)
Route reversals 0.63 (0.03) 0.50 (0.05) − 0.15 (0.03) 0.72 (0.05) 0.36 (0.08) − 0.39 (0.33)
Visits (max) 0.51 (0.03) − 0.29 (0.08) − 0.19 (0.06) 0.42 (0.02) − 0.31 (0.04) − 0.33 (0.17)
Time since release 0.78 (0.02) − 0.44 (0.04) − 0.06 (0.04) 0.75 (0.04) − 0.48 (0.05) 0.13 (0.14)
Residence time (max) 0.77 (0.02) − 0.40 (0.04) − 0.05 (0.04) 0.74 (0.03) − 0.39 (0.06) 0.31 (0.2)
Upstream distance (max) 0.61 (0.04) 0.61 (0.04) − 0.18 (0.04) 0.68 (0.05) 0.38 (0.09) − 0.45 (0.31)
Flow during residence 0.33 (0.04) − 0.36 (0.06) − 0.01 (0.06) 0.39 (0.04) − 0.39 (0.04) − 0.05 (0.07)
Upstream migration rate (max) 0.66 (0.03) 0.58 (0.04) − 0.12 (0.04) 0.69 (0.06) 0.40 (0.07) − 0.24 (0.23)
Downstream migration rate (max) 0.35 (0.04) 0.16 (0.08) 0.87 (0.02) 0.18 (0.05) 0.68 (0.08) 0.61 (0.21)
Distance over days (max) − 0.05 (0.05) 0.13 (0.08) 0.77 (0.04) − 0.28 (0.04) 0.51 (0.08) 0.56 (0.23)
Migration rate adj. (max[|x|]) 0.80 (0.02) 0.15 (0.04) 0.19 (0.04) 0.64 (0.05) 0.21 (0.04) 0.41 (0.15)
Migration rate (sd) 0.59 (0.03) − 0.35 (0.05) 0.32 (0.05) 0.47 (0.03) 0.08 (0.09) 0.60 (0.29)
Proportion upstream transitions 0.62 (0.04) 0.65 (0.04) − 0.23 (0.04) 0.70 (0.06) 0.35 (0.09) − 0.43 (0.3)
Proportion visits in high-risk zones 0.45 (0.03) − 0.48 (0.05) 0.05 (0.07) 0.38 (0.04) − 0.45 (0.07) 0.26 (0.21)
Proportion of against-flow transitions 0.51 (0.06) 0.44 (0.06) − 0.04 (0.05) 0.63 (0.05) 0.28 (0.07) − 0.31 (0.23)
  1. Principal component analyses were applied to two data sets: (1) behavioral metrics of 618 tagged smolts (“smolt-only”) and (2) the same data set augmented with 37 additional detection records from tagged predator fish species (“multispecies”; largemouth bass, striped bass, channel catfish, and white catfish). The percentage of variance accounted for by each of the first three principal components is shown after the axis label. Correlations are shown between metrics and the weights of the first three principal components; values > 0.6 are in bold and standard errors of correlations are in parentheses