Have we understimated the importance of humans in the biogeography of free-living terrestrial microorganisms?

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Wilkinson, D. M. (2010). Have we understimated the importance of humans in the biogeography of free-living terrestrial microorganisms? Journal of Biogeography, 37, 393-397. https://doi.org/10.1111/j.1365-2699.2009.02236.x