Table 3. Results of the RDA run with either of the two biological groups. The table lists the variance and the significance (p-value) for the full model; tests were run for each variable independently. Variables with a + (marked in bold) were significant for both plants and birds. Nonsignificant values (p > 0.05) are marked in red.

Model and variables	Plants (variance)	p-value	Birds (variance)	p-value	Birds+ plants	p-value
Model
Model (all axis)	63.9	0.0001	59	0.0001	69.6	0.0001
1st axis model	25.8	0.0001	18.1	0.0001	16.2	0.0001
10 best variables	46.1	0.0001	35.4	0.0001	38.9	0.0001
Land
Us-pl+	6.2	0.0038	4.3	0.0037	4.9	0.0012
Us-mdd+	4.6	0.0121	4.6	0.0029	4.6	0.0057
Us-mo	2.1	0.2308	4.4	0.0032	3.6	0.0052
Us-md	1.8	0.2972	4.4	0.0033	3.6	0.0048
Pa-e	4.5	0.0121	2.5	0.1062	3.2	0.0109
Us-pa	2.5	0.1213	3.3	0.0174	3.1	0.0210
Pa-ps	3.7	0.0242	2.4	0.1397	2.8	0.0374
Pa-SI	3.5	0.0266	1.3	0.6665	2.1	0.2134
Eco
COO-X+	15.3	0.0001	8.3	0.0001	10.6	0.0001
COO-Y+	6.0	0.0001	9.0	0.0001	8.0	0.0001
Ab-prec+	5.2	0.0046	8.5	0.0001	7.4	0.0001
ALT_MIN+	12.6	0.0001	3.7	0.0110	6.7	0.0001
Ab-spz+	14.7	0.0001	3.0	0.0414	6.8	0.0001
Ab-hum+	5.4	0.0028	7.5	0.0001	6.8	0.0001
Ab-temp+	5.1	0.0038	5.9	0.0001	5.6	0.0002
Ab-gead+	3.1	0.0381	3.3	0.0241	3.2	0.0253
Ae
Ae-de+	10.3	0.0001	7.9	0.0001	8.7	0.0001
Ae-bov	6.2	0.0032	2.3	0.1481	3.6	0.0121
Ae-cp	4.8	0.0074	2.8	0.0618	3.5	0.0118
Ae-tad	5.0	0.0048	2.6	0.0864	3.4	0.0134
Ae-mdes	3.7	0.0261	2.8	0.0582	3.1	0.0255
Ae-fl	2.8	0.1542	2.9	0.0363	2.9	0.0163
Ae-CS	1.3	0.6718	3.3	0.0251	2.7	0.0457
Ae-cap	3.4	0.0264	2.2	0.1687	2.6	0.0662