Additional file 1.

Examples of predicted barriers and how they align with associated ecoregions or major oceanic features. Barriers are shown by red polygons, ecoregions by black outlines, and global elevations by the shaded topography. A: Zambezian flooded grasslands. B: Sichuan basin broadleaf evergreen forests. C: Kuh Rud and Eastern Iran montane woodlands. D: Eastern Guinean forests. E: Sea of Azov (SE Ukraine). F: southern portions of the Chilean matorral. G: multiple ecoregions in the Andes. H: multiple ecoregions on the Arabian Peninsula. I: South Equatorial Current. J: Falkland Current. K: Alaska Current. L: Bering Sea (North is oriented down).

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Monahan et al. BMC Biology 2012 10:20   doi:10.1186/1741-7007-10-20