At the CCAMLR Bioregionalisation Workshop, 13-17 August 2007, it was agreed that physical variables could be used to produce primary physical regionalisations of the Southern Ocean and that benthic and pelagic zones should be considered separately. This paper provides a description of the process and results of the primary benthic regionalisation completed at the Workshop and subsequent refinements to this regionalisation including the use of additional data which could not be incorporated at the Workshop. The process and results of evaluating the physical regionalisation with biological data are also described.
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