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. 2016 Jan 14;4:e1578. doi: 10.7717/peerj.1578

Table 1. Category of coral-rocky reef sites and source of human impact.

Site Source of human impact Human population density (ind km−2) Distance from sampling site to Source of human impact (km) Rugosity index (RI) Category
Los Ahorcados (LA) Artesanal fishery + hotel zone 54.55 17.24 2.32 Undisturbed
Perpetuo Socorro (PS) Artesanal and industrial Fishery + hotel zone + industry discharge 1046.34 3.43 1.10 Disturbed