Table 1.

Wilcoxon's matched pairs test on mean trait scores for patches. Overall mean patch scores for each survey are provided to indicate the direction of change in traits.

trait	mean 1930s patch score	mean 2008 patch score	T	p
Ellenberg L (light)	5.80	5.44	465	<0.001
Ellenberg N (fertility)	5.02	5.44	229	<0.001
Ellenberg R (pH)	5.87	5.93	1434	0.060
Ellenberg F (moisture)	5.57	5.55	1814	0.808
mean January temperature (°C)	3.52	3.52	1787	0.719
mean July temperature (°C)	14.51	14.52	1779	0.694
proportion of non-native species	0.02	0.03	981	0.019