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Table 1 Summary of studies evaluating the response of California (CSO), Mexican (MSO) and northern (NSO) spotted owls to high-severity wildfire. Also shown are parameters evaluated; whether or not salvage logging occurred in burned areas (No, Yes, or Unknown [UN]); number of owls, sites, or territories (T = territories, B = number of burned territories) included; number of years post fire covered by the evaluation; and a simplified response (+ = generally positive, 0 = neutral, − = generally negative). The parameter occupancy was broadly defined here, and often included separate estimates of colonization and extinction rates. Number of territories and fires included, and number of years post fire covered by evaluation were estimated as best we could using information in the papers; that information was sometimes incomplete or unclear.

From: Conflicting Perspectives on Spotted Owls, Wildfire, and Forest Restoration

Study Subspecies Parameter evaluated Salvage logging Owls or territories (n) Fires (n) Years post fire (n) Response
Gutiérrez and Prichard 1990 CSO Density UN UN 1 1
Gaines et al. 1997 NSO Occupancy UN 6 T 1 complex 1
  Reproduction      0
Bond et al. 2002 All Survival No 21 owls Multiple 1 0
  Reproduction   7 T   1 +
Jenness et al. 2004 MSO Occupancy UN 64 T; 33 B Multiple 1 to 4
  Reproduction     
Bond et al. 2009 CSO Foraging use UN 7 owls 1 4 +
  Roosting use     
Bond et al. 2010 CSO Winter moves UN 5 owls 1 4 0
  Roosting use     
Clark et al. 2011 NSO Survival Yes 23 owls 2 3 to 4 0
Roberts et al. 2011 CSO Occupancy No 32 sites; 16 B Multiple 0 to 16 0
Lee et al. 2012 CSO Occupancy   186 T; 41 B Multiple 1 to 6 0
Bond et al. 2013 CSO Home-range UN 7 owls 1 4 0
Clark et al. 2013 NSO Occupancy Yes 143 T; 40 B Multiple 1 to 5
Lee et al. 2013 CSO Occupancy Yes 168 T, 71 B Multiple 1 to 9 0
  Reproduction     
Ganey et al. 2014 b MSO Prey abundance No 4 owls 2 4 to 6 +
Tempel et al. 2014 CSO Occupancy Yes 74 T Unknown Unknown
Lee and Bond 2015 a CSO Occupancy Yes 168 T Multiple 1 to 9
Lee and Bond 2015 b CSO Occupancy No 45 T 1 1 0
Jones et al. 2016 CSO Occupancy Yes 45 T; 30 B 1 1
  Foraging use   9 owls   
Bond et al. 2016 CSO Foraging use UN 8 owls 1 4 0
Comfort et al. 2016 NSO Use of edge Yes 23 owls 1 0 to 4
Rockweit et al. 2017 NSO Survival No 96 T; 24 B 10 0 to 25
  Recruitment