Table 2.

Gamma statistics for associations among the crumbly scores from the field sites

	2004, Field A	2004, Field B	2007	2008	2009	2010	2011
2004, Field B	0.59*
2007	0.40	0.71**
2008	0.26	0.65	−0.04
2009	0.62**	0.54*	0.97***	0.34
2010	0.62*	0.81***	0.81***	0.42	0.79***
2011	0.48*	0.57*	0.78***	0.05	0.70***	0.78***
2012	0.72***	0.61*	0.75***	0.08	0.67***	0.80***	0.99***

2009 values are based on 3 replicates, others on one. The severity scores are used in 2011 and 2012

*** p < 0.001; ** p < 0.01; * p < 0.05