an increasing trendp = 0.3886
patagonica did not differ between the two locations (La Hormiga and El Hormigón; two-way ANOVA comparing abundance of open spaces associated to coral colonies among locations, main effect location: F 1,3,1501 = 0.0152, p = 0.9093) or over time, despite showing an increasing trend (2005, 2006, 2007, 2010; main effect time: F 3,- = 1.4271, p = 0.3886).