Table 2 in Trialling a simple camera-trap based method to estimate Black-backed jackal population density

Table 2: Density estimates for Black-backed jackals (Lupulella mesomelas) in the grassland habitat on Telperion Nature Reserve from April to June 2017 PeriodVariablesREMgREMSource of velocity dataYTPiV (kmh- 1)R2 + thetaGroup sizeDensity (nkm- 2)Density 95% CInn 95% CIDensity (nkm- 2)Density 95% CInn 95% CIFull durationTelperion 13988353.145.040.042.7110.05[0.01 to 0.13]2.16[0.28 to 5.38]0.02[0.00 to 0.05]0.93[0.12 to 2.32]Karoo 23988353.140.500.042.7110.51[0.07 to 1.27]21.71[2.78 to 53.99]0.22[0.03 to 0.55]9.38[1.20 to 23.33]Natal 33988353.140.430.042.7110.59[0.08 to 1.47]25.23[3.23 to 62.74]0.26[0.03 to 0.64]10.9[1.39 to 27.11]Telperion 13988353.145.040.042.7120.10[0.01 to 0.25]4.33[0.54 to 10.76]0.04[0.01 to 0.11]1.87[0.24 to 4.65]Karoo 23988353.140.500.042.7121.02[0.13 to 2.53]43.42[5.657 to 107.99]0.44[0.06 to 1.09]18.76[2.41 to 46.66]Natal 33988353.140.430.042.7121.20[0.15 to 2.94]50.45[6.47 to 125.59]0.51[0.07 to 1.27]21.80[2.80 to 54.22]April / MayTelperion 11145003.145.040.042.7110.03[0 to 0.07]1.2[0 to 3.16]0.01[0.00 to 0.03]0.52[0.00 to 1.36]Karoo 21145003.140.500.042.7110.29[0 to 0.74]12.02[0 to 31.69]0.12[0.00 to 0.32]5.19[0.00 to 13.69]Natal 31145003.140.430.042.7110.33[0 to 0.86]13.97[0 to 36.83]0.14[0.00 to 0.37]6.04[0.00 to 15.91]Telperion 11145003.145.040.042.7120.06[0 to 0.15]2.40[0 to 6.31]0.02[0.00 to 0.06]1.04[0.00 to 2.73]Karoo 21145003.140.500.042.7120.56[0 to 1.49]24.04[0 to 63.39]0.24[0.00 to 0.64]10.39[0.00 to 27.39]Natal1145003.140.430.042.7120.66[0 to 1.73]27.94[0 to 73.66]0.28[0.00 to 0.75]12.07[0.00 to 31.83]May / JuneTelperion 12843353.145.040.042.7110.07[0.01 to 0.18]3.16[0.34 to 7.56]0.03[0.00 to 0.08]1.37[0.15 to 3.22]Karoo 22843353.140.500.042.7110.74[0.08 to 1.78]31.77[3.45 to 75.93]0.32[0.03 to 0.76]13.73[1.47 to 32.35]Natal 32843353.140.430.042.7110.87[0.10 to 2.07]36.91[4.01 to 88.23]0.37[0.04 to 0.88]15.95[1.71 to 37.60]Telperion 12843353.145.040.042.7120.15[0.02 to 0.35]6.33[0.69 to 15.13]0.06[0.01 to 0.15]2.73[0.29 to 6.45]Karoo 22843353.140.500.042.7121.49[0.16 to 3.56]63.53[6.90 to 151.85]0.64[0.07 to 1.51]27.45[2.94 to 64.71]Natal 32843353.140.430.042.7121.73[0.19 to 4.14]73.83[8.02 to 176.46]0.75[0.08 to 1.76]31.90[3.42 to 75.19] 1 Using camera trap estimated velocity on Telperion 2 Drouilly unpublished GPS collar data - pers. Comm. 3 Humphries et al. 2016 GPS collar data Y = number of detections or speed estimates T = Number of hours total Pi = constant V= estimated velocity in kmh-1 R = radius of detection zone (40m) theta = base angle of detection zone in radians REM - Random encounter model as formulated by Rowcliffe et al. (2008) gREM - generalised Randon encounter model as formulated by Lucas et al. (2015) 95% CI estimated using bootstrap method (Rowcliffe et al. 2008)