Table 2.

Spearman correlations between overall number of birds sighted (skylarks excluded), species richness, species diversity (Shannon-Wiener diversity index) and area covered by miscanthus in the study plots. Values are given separately for the entire year and for each season. Variation in sample sizes for species diversity is a consequence of a lack of birds, or presence of only a single species, in some plots during at least one visit

Season	Spearman rho	p	N
Entire year
N sightings	−0.378	0.048*	28
Species richness	−0.190	0.333	28
Species diversity	0.086	0.664	28
Early spring
N sightings	−0.297	0.125	28
Species richness	−0.044	0.825	28
Species diversity	−0.130	0.517	27
Breeding season
N sightings	−0.018	0.927	28
Species richness	0.131	0.505	28
Species diversity	0.011	0.957	28
Late summer
N sightings	−0.587	0.001**	28
Species richness	−0.456	0.015**	28
Species diversity	0.160	0.415	28
Autumn
N sightings	−0.279	0.151	28
Species richness	−0.107	0.588	28
Species diversity	−0.068	0.732	28
Winter
N sightings	0.065	0.744	28
Species richness	0.008	0.967	28
Species diversity	−0.062	0.775	24

*- significant at p < 0.05 before sequential Bonferroni correction for multiple testing applied to the whole table

**- significant at p < 0.05 after sequential Bonferroni correction for multiple testing applied to the whole table