Patterns of woodboring beetle activity following fires and bark beetle outbreaks in montane forests of California, USA

Fire Ecology

Table 9 Fixed effects and associated hypotheses (H_A from Table 5) in top models of adult buprestid activity across 11 burned sites sampled in the greater Sierra Nevada region of California, USA, during the summers of 2015 and 2016. QAICc = quasi-Akaike’s information criterion, corrected for small sample size; DOY = day of year; Neg = negative; Pos = positive; BA = basal area

Response	Model rank	Predictor	Effect^a	ΔQAICc	Δ_Null	H_A
Adult buprestid activity	1	Ignition date (DOY)	Neg^ns	0.00	11.96	P
		DOY × DOY	Neg^***			P
		Fire age	Neg^***			A
		DOY × DOY × Fire age	Pos^***			P, A
	2	Snag BA	Pos^**	6.17	5.79	M, S
		Fire age	Neg^**			A
		Snag BA x Fire age	Pos^ns			M, S, A
	3	Snag BA	Pos^***	6.32	5.64	M, S
	4	Char height	Pos^**	7.57	4.39	S
	5	Char height	Pos^**	7.66	4.30	S
		Fire age	Neg^**			A
		Char height × Fire age	Neg^ns			S, A
Adult Cypriacis aurulenta activity^b	1	Host tree taxon = pine	Pos^**	0.00	0.39	H
Adult Melanophila consputa activity	1	Fire age	Neg^***	0.00	20.19	A
		Char height	Pos^ns			S
		Live tree BA	Neg^**			M, S
		Ignition date	Neg^***			P
	2	Fire age	Neg^***	2.33	17.86	A
		Burn severity = low	Neg^***			S
		Burn severity = moderate	Neg^***			S
		Ignition date (DOY)	Neg^*			P
		DOY × DOY	Neg^*			P
	3	Fire age	Neg^***	3.84	16.35	A
		Char height	Pos^***			S
		Ignition date (DOY)	Neg^*			P
		DOY × DOY	Neg^*			P
	4	Fire age	Neg^***	4.46	15.73	A
		Burn severity = low	Neg^***			S
		Burn severity = moderate	Neg^**			S
	5	Live tree BA	Neg^***	7.55	12.64	M, S

^ans (P > 0.05), ^* (P < 0.05), ^** (P < 0.01), ^*** (P < 0.001)
^bOnly one model of adult Cypriacis aurulenta activity was supported relative to the null model