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Table 3 Mean fire intervals in pine and fir sample sites (see Figure 2 for locations). These data were derived from composite fire scar records in these sites. The time period used in the analyses was 1700 to 1900 C.E. for all series. The “all” category refers to intervals between fires recorded on any tree within the site, and the “25%” category refers to fires recorded on ≥25% or more of trees within each site.

From: Multi-Millennial Fire History of the Giant Forest, Sequoia National Park, California, USA

Site code

    

Fire intervals (yr)

 

Fire scar Composite

Approx. area (ha)

No. of trees

Mean

Median

Min.

Max.

Std. dev.

BOB

 

40

9

     
 

all

  

5.3

4

1

18

4.4

 

25%

  

8.8

7.5

1

26

6.8

CCR

 

15

15

     
 

all

  

6.0

5

1

20

4.3

 

25%

  

9.1

7

4

20

5.0

GFP

 

27

9

     
 

all

  

9.5

8.5

1

25

6.4

 

25%

  

20.6

18

10

33

8.9

HSR

 

37

15

     
 

all

  

7.8

6

1

26

5.9

 

25%

  

14.3

15

5

26

6.9

HUK

 

15

6

     
 

all

  

6.6

5

1

23

5.3

 

25%

  

10.0

9

4

26

6.4

MOR

 

11

12

     
 

all

  

6.6

5

2

22

4.9

 

25%

  

12.8

12

5

22

5.8