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Using Ecological Null Models to Assess the Potential for Marine Protected Area Networks to Protect Biodiversity

Figure 2

Maximally packed presence-absence matrix of Caribbean reef fishes, such that species are sorted in order of ubiquity (rows) and sites are sorted in order of richness (columns).

Each darkened square indicates the presence of a species at a site. The curve represents the isocline of perfect nestedness subject to the constraints of perfect occupancy at the most diverse site, and perfect vacancy at the least diverse site.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0008895.g002