Though digital images of mangrove impact by aquaculture have been made in Mexico and have demonstrated a non-significant perturbation, such estimations determine vegetal coverage and not forest structure in terms of density and basal area. Agraz-Hernandez (1999) found that in Estero de Urıas (Sinaloa) mangrove density around shrimp farms has decreased 50% in comparison with mangrove located elsewhere. In the