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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

    

−