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The Effect of Animal Movement on Line Transect Estimates of Abundance

Fig 5

Percentage bias in abundance estimate for different shape parameter values.

Percentage bias in abundance estimate for linear movement against animal speed as a percentage of observer speed for shape parameters b = 2 (black solid), b = 3 (blue dashed) and b = 5 (red dotted) with percentage bias for a strip transect (grey solid) estimated from 1000 simulations included for comparison.

Fig 5

doi: https://doi.org/10.1371/journal.pone.0121333.g005