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Table 1 Ponderosa pine fire effects monitoring plots located at Zion National Park, Utah, USA, by fire entry years, burn severity, season of burn, and whether the plot was included in analysis of first entry fires, second entry fires, or both. Plots, listed by field number, used for first entry fire data analysis included those with 1 yr, 2 yr, 5 yr and 10 yr post-fire remeasurements, and those used for second entry fire data analysis included those with 1 yr and 2 yr post-fire remeasurements. Burn severity by category is as defined in USDI NPS (2003). Pre-fire data were collected for all plots.

From: Evaluating Prescribed Fire Effectiveness Using Permanent Monitoring Plot Data: A Case Study

  Prescribed fire year Burn severity Season of burn Included in analysis
Plot First entry Second entry First entrya Second entry First entry Second entry First entry Second entry
3 1995 2006 Scorched Scorched Late summer Spring X X
6 1995 1997 Lightly burned Unburned Late summer Spring   X
7 1996 2004 Unburned Lightly burned Fall Fall   X
8 1996 2004 Scorched Lightly burned Fall Fall   X
10 1996 2004 Scorched Scorched Fall Fall   X
1 1997   Scorched   Spring   X  
2 1997 2008 Scorched Lightly burned Spring Spring X X
4 1997 2008 Lightly burned Unburned Spring Spring X X
5 1997 2006 Scorched Unburned Spring Spring   X
17 1997 2008 Lightly burned Scorched Fall Fall X X
26 1997 2007 Scorched Lightly burned Fall Fall   X
12 1998   Unburned   Fall   X  
13 1998   Scorched   Fall   X  
14 1999   Scorched   Fall   X  
47 1999 2007 Scorched Scorched Fall Fall   X
       Sample size: 8 11
  1. a Fire monitoring handbook burn severity categories in order of increasing severity: unburned < scorched < lightly burned. Unburned (5 value) is not burned. Scorched (4 value) includes litter partially blackened, duff nearly unchanged, and wood and leaf structures unchanged. Lightly burned (3 value) includes litter charred to partially consumed, upper duff layer may be charred but is not altered over the entire depth, surface appears black, woody debris is partially burned, logs are scorched or blackened but not charred, and rotten wood is scorched to partially burned.