Box-counting scaling-law in time. (a) Power-law N(l)=N0l−D
derived from the box-counting algorithm applied to the occurrences of PIPL (black dots) and REKN (green) in 2006 and to the whole Florida Gulf coastline. In the inset the schematized Florida coastline is evaluated at different box sizes. (b) Box-counting algorithm applied to the 2002-2010 occurrence of the SNPL. The fractal dimension derived from the analysis of the breeding and nesting occurrences is D
=1.63, 1.62, 1.75, 1.74, 1.63, 1.64, 1.66, 1.68, 1.70 for the years from 2002 to 2010, respectively. In the inset D
are reported for each year. Values of D
are reported (Additional file 1: Table S3).