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Distribution of occurrences based on a geographic dimension. Occurrences of a virtual parasite (n = 636) are dispersed across Australia (black crosses). Mean temperature for June is variables in the country (background colors), occurrences however, do not have environmental independence: all points fall in sites with identical temperature values (i.e., 12.5°C). Temperature data obtained from http://www.worldclim.org/ (Hijmans et al., 2005).
