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Fig. 6 | Animal Biotelemetry

Fig. 6

From: The influence of dynamic environmental interactions on detection efficiency of acoustic transmitters in a large, deep, freshwater lake

Fig. 6

Partial effects of nonlinear environmental variables on detection efficiency (DE) for each of the three best fitting generalized additive mixed models (GAMMs) for the V9, V13, and V16 tags, respectively. Environmental variables included are distance between tag and receiver (m), thermocline index, surface water velocity (m·s−1), ice thickness (m), temperature at 50 m (°C), number of fish detections, and depth difference between tag and receiver (m). Thermocline index represents the strength of the thermocline where zero signifies thermal homogeneity and values departing from zero in either direction indicate an increasing thermal gradient. Positive values of depth difference indicate that the tag is shallower than the receiver whereas negative values indicate that the tag is deeper than the receiver. The y-axes represent the partial effect on DE and are shown in the format of s (covariate, effective degrees of freedom). Shaded areas represent the 95% confidence interval around each smooth term

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