Human sewage disposal in Antarctica presents a risk of introducing non-native bacterial species, specifically E. coli, into endemic Antarctic wildlife, potentially affecting its diversity and evolution, a new research project led by Macquarie University has found.

Source:: http://www.wateronline.com/doc/antarctic-wildlife-at-risk-from-human-derived-e-coli-0001?atc~c=771+s=773+r=001+l=a