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. 2010 May 21;5(5):e10754. doi: 10.1371/journal.pone.0010754

Figure 4. The effect of increasing effort on population estimates obtained using the marked recount method.

Figure 4

The total kilometers walked is the sum of the total transect length times the number of surveys. Increasing the effort above thirteen kilometers (or 0.26 km2) provided little increase in performance under the model parameters used. The two panels present the same results, but using different scales on the y-axis.