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The Effect of Animal Movement on Line Transect Estimates of Abundance

Fig 1

Strip transect with encounter region.

Transect line (dashed grey line) with the strip extending a distance w out to either side (solid grey lines). The observer and encounter region at time t − 1 (dashed black) and t (solid black) are shown, together with an animal moving with speed u in direction θ

Fig 1

doi: https://doi.org/10.1371/journal.pone.0121333.g001