Figure S1. Spatial autocorrelation for all individuals (not including identical genotypes, n = 84) at 0.2 km size classes between 0 – 2 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.400% 0.40 **% *% 0.30 0.300% 0.20 0.200% 0.10 0.100% r" r 0.00 0.000% r% U% *% -0.10 !0.100% L% -0.20 !0.200% -0.30 !0.300% -0.40 !0.400% 0.2% 0.2 0.4% 0.4 0.6% 0.6 0.8% 0.8 1% 1.0 1.2% 1.2 Distance"Class"(End"Point)" 1.4% 1.4 Distance class (end point; km) 1.6% 1.6 1.8% 1.8 2% 2.0 Figure S2 Spatial autocorrelation for all individuals (not including identical genotypes, n = 84) at 2 km size classes between 0 – 20 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.20 0.200& * 0.15 0.150& 0.10 0.100& 0.050& 0.05 r& r" r U& 0.000& 0.00 L& !0.050& -0.05 !0.100& -0.10 !0.150& -0.15 2& 2 44& 66& 8 8& 1010& 1212& Distance"Class"(End"Point)" 1414& Distance class (end point; km) 16& 16 18& 18 20& 20 Figure S3 Spatial autocorrelation for all individuals (not including identical genotypes, n = 84) at 10 km size classes between 0 – 120 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.200& 0.20 0.150& 0.15 0.100& 0.10 r& r" r 0.050& 0.05 U& 0.000& 0.00 L& ** !0.050& -0.05 !0.100& -0.10 !0.150& -0.15 10& 10 20& 20 30& 30 40& 40 50& 50 60& 60 70& 70 80& 80 Distance"Class"(End"Point)" Distance class (end point; km) 90& 90 100& 100 1 110& 10 120& 120 Figure S4. Spatial autocorrelation for males (not including identical genotypes, n = 28) at 2 km size classes between 0 – 20 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.25 0.250& * 0.20 0.200& 0.15 0.150& 0.10 0.100& r r" 0.05 0.050& 0.000& 0.00 r& U& -0.05 !0.050& L& !0.100& -0.10 !0.150& -0.15 * !0.200& -0.20 !0.250& -0.25 2& 2 44& 66& 8 8& 1010& 1212& Distance"Class"(End"Point)" 1414& Distance class (end point; km) 1616& 1818& 2020& Figure S5. Spatial autocorrelation for males (not including identical genotypes, n = 28) at 10 km size classes between 0 – 120 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.400% 0.20 0.15 0.300% 0.200% 0.10 0.100% 0.05 * r" r r% U% 0.000% 0.00 L% !0.100% -0.05 * !0.200% -0.10 !0.300% -0.15 10% 10 20% 20 30% 30 40% 40 50% 50 60% 60 70% 70 80% 80 Distance"Class"(End"Point)" Distance class (end point; km) 90% 90 100% 100 1 110% 10 120% 120 Figure S6. Spatial autocorrelation for females (not including identical genotypes, n = 29) at 2 km size classes between 0 – 20 km between 0 – 120 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.400% 0.40 0.30 0.300% * 0.200% 0.20 0.100% 0.10 r% r" r U% 0.000% 0.00 L% !0.100% -0.10 * !0.200% -0.20 !0.300% -0.30 2% 2 44% 66% 8 8% 1010% 1212% Distance"Class"(End"Point)" 1414% Distance class (end point; km) 1616% 1818% 2020% Figure S7. Spatial autocorrelation for females (not including identical genotypes, n = 29) at 10 km size classes between 0 – 120 km between 0 – 120 km. Significant values are indicated by a star (* < 0.05, ** < 0.01, *** < 0.001). Results"of"Spa8al"Structure"Analysis" 0.400% 0.40 0.300% 0.30 0.200% 0.20 0.100% 0.10 r 0.00 0.000% r" r% U% !0.100% -0.10 L% !0.200% -0.20 * !0.300% -0.30 !0.400% -0.40 10% 10 20% 20 30% 30 40% 40 50% 50 60% 60 70% 70 Distance"Class"(End"Point)" 80% 80 Distance class (end point; km) 90% 90 100% 100 1110% 10 120% 120 Figure S8. Graph showing change in relatedness as a function of number of microsatellite loci, estimated using RERAT [1]. Changes in relatedness from additional loci is predicted using a trend line (power relationship, R2 = 0.999), and is shown in red. Figure S9. Scatter plot of genetic verses geographic distance of okapi in the RFO 30 25 20 15 10 5 Genetic distance (Peakall & Smouse 2012) (not including identical genotypes, n = 84). Genetic distance vs geographic distance of okapi in the RFO 0 20 40 60 80 100 120 Geographic distance (km) 1. Schwacke L, Schwacke J, Rosel P (2005) RE-RAT: relatedness estimation and rarefaction analysis tool.