Table 2. Results of mixed effects model analyses for log-transformed abundance and richness of algae, amoebae and flagellates, with “bromeliad” treated as a random effect.

		Algae: Abundance			Richness		Amoebae: Abundance			Richness		Flagellates: Abundance			Richness
	ndf	ddf	F	P	F	P	ddf	F	P	F	P	ddf	F	P	F	P
Sorter	1	189	46.736	<0.001	1.440	0.232	182	20.72	<0.001	14.127	<0.001	74	86.525	<0.001	42.291	<0.001
Canopy openness	1	23	0.041	0.841	3.521	0.073	23	0.774	0.388	1.750	0.199	19	0.304	0.588	0.09	0.768
Trophic treatment +	2	23	25.644	<0.001	7.041	0.004	23	67.304	<0.001	23.208	<0.001	19	14.418	<0.001	7.369	0.004
Temperature	1	189	0.621	0.432	0.937	0.334	182	2.123	0.147	4.987	0.027	74	3.706	0.058	0.335	0.565
Dispersal ++	2	189	1.555	0.214	1.621	0.200	182	1.404	0.248	0.030	0.970	74	0.013	0.987	0.286	0.752

⁺Trophic treatment levels: control, predator addition and resource addition.

⁺⁺Dispersal levels: control, local dispersal and regional dispersal, P-values<0.05 are printed in bold. ndf = numerator degrees of freedom, ddf = denumerator degrees of freedom