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What was done
The authors, as they describe it, "compared variations in spatial and taxonomic patterns between two bleaching events at the scale of an island (Moorea Island, French Polynesia)." More specifically, they write that "nine stations involving three locations (Haapiti, Tiahura, and Viapahu) and three depths (6, 12 and 18 m) have been routinely surveyed for various scientific purposes since 2001," as described by Penin et al. (2007a, 2010). And more specifically still, they write that "bleaching intensity was measured at these nine stations in 2002 and 2007," being initiated "two weeks following the first signs of bleaching (Penin et al., 2007b)" in each of the two years. And they state that "this sampling strategy was repeated by the same observer in 2007." Also in both cases, they focused on six coral genera (Acropora, Montipora, Montastrea, Pavona, Pocillopora and Porites), which together accounted for fully 88% of the total coral assemblage.
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