TABLE 3.

Model averaged parameters for predicting microbial diversity (Shannon Index) using conditional averaging.

Variable	Relative variable importance	B	se	z	P
Intercept		3.82	0.15	23.26	<0.001
Ammonia	1.00	–0.65	0.43	1.43	0.15
ureC	1.00	–1.33	0.40	3.11	0.002
ammonia * ureC	1.00	1.68	0.46	3.41	<0.001
Sulfate	0.46	0.53	0.31	1.60	0.11
pH	0.38	0.60	0.39	1.42	0.15

Parameters listed are only those that are in the top models (delta AICc < 2) shown in Table 1. B = estimate; se = standard error; z = z-value; p = p-value.