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. 2014 Jul 17;9(7):e100551. doi: 10.1371/journal.pone.0100551

Figure 1. The framework used to classify ecosystems within the Southern Ocean.

Figure 1

Ecoregions were defined on the basis of important environmental drivers and their potential to prevent dispersal. Biogeographic patterns identified in the literature were also incorporated. A hierarchical approach was then applied within each ecoregion, nesting the two main habitat types (geomorphic features within bathomes) to identify environmental types.