Skip to main content

Advertisement

Table 1 Camera trapping sampling design and outcome of the pilot study and the two sessions (2014 and 2015) carried out in the study area (Arezzo province, Italy)

From: Estimation of pack density in grey wolf (Canis lupus) by applying spatially explicit capture-recapture models to camera trap data supported by genetic monitoring

  Pilot Study Session 2014 Session 2015 Total
Time period 1 April - 18 June 2014 19 June – 28 August 2014 10 January – 11 June 2015  
MCP trap array (Km2) 414 560  
Camera stations 7–20 26 45  
Sampling occasions (days) 79 71 153 303
Mean sampling occasion/trap (SD)   58.9 (12.5) 55.9 (12.6)  
Trap days 1094 1533 2570 5197
Wolf videos 194 265 450 909
Independent capture events (CE) 147 188 322 657
CE/100 trap days 13.44 12.26 12.53 12.64
Unusable CEa 31 24 75 130
Unassigned CEb 26 21 53 100
CE assigned to a pack 90 143 194 427
CE with focal animal (used) 69 98 128 295
  1. aLow quality videos (wolves far from the camera, passing without stopping, partially captured, presence of fog)
  2. bGood quality videos (but no focal animal identified)