Table 1.

Results of the negative binomial generalized linear model comparisons without and with light treatment and insect density as fixed effects, and Gaussian models on insect density with and without light treatment. loglik, log likelihood; l.r., likelihood ratio.

	d.f.	theta	2 * loglik	d.f.	log l.r.	p
Group 1: Myotis sp. + Plecotus sp.
site	24	2.450	−260.548
treatment + site	21	4.242	−243.327	3	17.221	<0.001
Group 2: Pipistrellus sp.
site	24	1.728	−622.234
treatment + site	21	3.165	−600.180	3	22.055	<0.0001
Group 3: Nyctalus sp. + Eptesicus sp.
site	24	1.718	−457.728
treatment + site	21	1.905	−453.985	3	3.743	0.29
Group 2: Pipistrellus sp. (during all nights with lights off)
site	21	1.080	−358.170
treatment + site	18	1.098	−357.701	3	0.469	0.93
Group 2: Pipistrellus sp. (during insect sampling with lights on)
site	21	1.742	−291.308
treatment + site	18	2.372	−282.329	3	8.979	<0.05
Group 2: Pipistrellus sp. (during insect sampling with lights off)
site	18	1.347	−209.884
treatment + site	15	1.635	−205.156	3	4.727	0.19
Group 2: Pipistrellus sp. (with insects as independent variable with lights on)
site	21	1.742	−291.308
insects + site	20	1.967	−287.713	1	3.595	0.06
Group 2: Pipistrellus sp. (with insects as independent variable with lights off)
site	18	1.347	−209.884
insects + site	17	1.400	−208.950	1	0.933	0.33
Group 2: Pipistrellus sp. (with insects as independent variable, all nights)
site	45	1.154	−518.457
insects + site	44	1.488	−503.985	1	14.471	<0.0005

	d.f.	AIC	loglik	d.f.	χ2	p
insects (with lights on)
1|site	3	35.150	−14.575
treatment + 1|site	6	5.974	3.013	3	35.175	<0.00001
insects (with lights off)
1|site	3	31.049	−12.525
treatment + 1|site	6	29.890	−8.945	3	7.159	0.07