Fire Ecology

Table 4 Linear mixed models predicting the rate of surface fire spread, flame length, and reaction intensity as a function of moisture scenario (% moisture by fuel class), woodland phase, fuel treatment (prescribed fire, mechanical, or untreated control), and year (years 0, 1, 2, 3, 6, and 10 post-treatment) from ten replicate sites across the Intermountain West, USA

From: Fuel treatments in shrublands experiencing pinyon and juniper expansion result in trade-offs between desired vegetation and increased fire behavior

	Rate of spread		Flame length		Reaction intensity
Source	F	P	F	P	F	P
Intercept	51.3	< 0.001	174.5	< 0.001	140.5	< 0.001
Year	68.6	< 0.001	228.0	< 0.001	38.5	< 0.001
Treatment	387.2	< 0.001	1041.8	< 0.001	268.4	< 0.001
Phase	10.2	< 0.001	75.8	< 0.001	253.4	< 0.001
Moisture Scenario	108.9	< 0.001	305.5	< 0.001	210.7	< 0.001
Year × treatment	21.7	< 0.001	57.2	< 0.001	20.8	< 0.001
Year × phase	3.0	0.01	1.2	0.26	5.8	< 0.001
Treatment × phase	22.5	< 0.001	2.1	0.08	45.6	< 0.001
Year × treatment × phase	3.1	< 0.001	1.1	0.34	4.8	< 0.001

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