TABLE 1.

Analysis of Deviance (Type III Wald Chi‐square tests) for the main response variables (vegetative) shoot density, inflorescence density, flower density, and seed density (individual m⁻²).

Model = Poisson (log)
Source	Shoot density			Inflorescence density
	df	ChiSq	p(>chisq)	df	ChiSq	p(>chisq)
(Intercept)	1	8560.2	<2.2e−16	1	218.2	<2.2e−16
Location	5	1300.0	<2.2e−16	5	134.8	<2.2e−16
Year	5	25.34	.00012	5	41.97	5.966e−08
Location × year	25	98.55	1.10–10	25	119.7	2.527e−14

Model = negative binomial (log)
Source	Flower density			Seed density
	df	ChiSq	p(>chisq)	df	ChiSq	p(>chisq)
(Intercept)	1	2334.5	<2.2e−16	1	209.6	<2.2e−16
Location	5	591.9	<2.2e−16	5	199.5	<2.2e−16
Year	5	99.57	<2.2e−16	5	24.88	.000147
Location × year	24	621.8	<2.2e−16	24	289.1	<2.2e−16

Note: All p << .0001 or “***”.