Table 3. Best-fit generalized linear model representing variation in Non-Ant Invertebrate counts.

We present results from the best-fit generalized linear mixed-effects model that examined the effect of RIFA suppression/treatment (i.e. prairies that were treated with insecticide and left untreated) and time on non-ant invertebrate count data collected from April–July 2015 at our study site in the Attwater Prairie Chicken National Wildlife Refuge (APCNWR). This top- ranked model specified a Type 2 Negative Binomial error distribution and random variation in intercepts among prairies. Non-ant invertebrate counts showed a significant decrease over time.

Variable	Estimate	SE	Z	P value
Intercept	2.664	0.114	23.33	<0.001
Week	−0.034	0.013	−2.57	0.01a

Notes.

^aEstimate, slope parameter or β; SE, standard error of the estimate; Z, Wald Z-test statistic; P, probability value.