Figure 6 Standardized mean shoot length site-chronology and mean late summer (July-August) NDVI over 1981-2013 (r=0.44, p<0.01) (a). There was a positive trend in late summer NDVI over this period (r=0.24, p<0.1). Standardized branch initiation frequency and maximum NDVI (r=0.26, p<0.1) (b).
Table 3 Pearson correlation coefficients between climate variables and late summer (July-August) NDVI/ maximum NDVI over the research area. Only coefficients with p<0.1 are shown..p<0.1, *p<0.5,**p<0.01.