Change in visible impact and hydroid colonization related to initial total obvious visible impact.
(a) Proportions of visibly impacted portions of coral (vi) that transitioned to no obvious impact (nv) between late 2010 and March 2012 (n = 14, linear fit intercept 1.12, slope –1.21, R2 adj. = 0.840041, p < 0.0001, 95% confidence intervals shaded); (b) Proportions of visibly impacted portions of coral (vi) that transitioned to being colonized by hydroids (hy) between late 2010 and March 2012 (n = 14, linear fit intercept –0.058792, slope 0.5776467, R2 adj. = 0.611327, p < 0.001, 95% confidence intervals shaded).