In K2, the two-way ANOVA showed significant year-by-vegetation
type interaction in median grain size (F¼3.63; df ¼ 2, 24;
p¼ 0.042). Median grain size decreased in nonvegetated areas
from 2001 to 2005 but recovered by 2006 to a value similar to that
in 2001 (Fig. 3A). In seagrass vegetation, however, median grain
size showed no significant difference among years.