Structuring of plant communities across agricultural landscape mosaics: the importance of connectivity and the scale of effect

Table 1 Permutation of the maximum observed R²

		Gabriel graph		Delaunay triangulation		Relative neighbour 1		Relative neighbour 2
Ordination	Scale	Obs.	p-value	Obs.	p-value	Obs.	p-value	Obs.	p-value
Y Axis 1	Coarse	0.451	0.628	0.420	0.712	0.623	0.209	0.623	0.205
Y Axis 1	Fine	0.549	0.373	0.580	0.289	0.377	0.792	0.377	0.796
Y Axis 2	Coarse	0.749	0.040	0.780	0.024	0.810	0.013	0.810	0.020
Y Axis 2	Fine	0.251	0.961	0.220	0.977	0.190	0.988	0.190	0.981
F Axis 1	Coarse	0.729	0.047	0.611	0.205	0.652	0.134	0.652	0.184
F Axis 1	Fine	0.271	0.954	0.389	0.796	0.348	0.867	0.348	0.817
F Axis 2	Coarse	0.661	0.125	0.736	0.042	0.585	0.282	0.585	0.292
F Axis 2	Fine	0.339	0.876	0.264	0.959	0.415	0.719	0.415	0.709
R Axis 1	Coarse	0.136	0.999	0.262	0.956	0.406	0.745	0.406	0.747
R Axis 1	Fine	0.864	0.002	0.738	0.045	0.594	0.256	0.594	0.254
R Axis 2	Coarse	0.556	0.351	0.310	0.881	0.572	0.295	0.572	0.329
R Axis 2	Fine	0.444	0.650	0.690	0.120	0.428	0.706	0.428	0.672

Significant tests are indicated with bold text
The spatial variables are for the first and second axes of a PCA of site-by-species (Y, 0.167 and 0.162 of total variance), an RDA of the environmental variables (F, 0.202 and 0.198 of total variance), and a partial residual analysis (R, 0.239 and 0.195 of total variance). Significant tests indicated with bold text. The standardised observations are calculated by subtracting the mean of the randomised values and dividing by their standard deviation

ISSN: 2730-7182