Agriculture Reference
In-Depth Information
800
(a) Unburned sites
600
400
200
0
1999
2001
2003
2005
2007
15 000
(b) Sites burned in 2001
10 000
5000
Fire
0
1999
2001
2003
2005
2007
800
(c) Sites burned in 2004
600
400
Fire
200
0
1999
2001
2003
2005
2007
Year
Fig. 3.6
Interaction between fire and mast cone production illustrated by first-year
Abies
concolor
seedlings in 1- or 2-ha sample plots: (a) n ¼ 11 unburned sites, (b) n ¼ 3 sites burned
in 2001, one year prior to a mast year, and (c) sites burned in 2004, two years prior to a mast
year, in white-fir-dominated forests of Sequoia National Park in the southern Sierra Nevada of
western North America. (From Keeley & van Mantgem
2008
.)
