Baseline concentrations of faecal sterols and assessment of sewage inputinto different inlets of Admiralty Bay, King George Island, Antarctica
- Martins, César de Castro
- Aguiar, Sabrina N
- Wisnieski, Edna
- Ceschim, Liziane Marcella Michelotti
- Figueira, Rubens Cesar Lopes
- Montone, Rosalinda Carmela
DOIAbstract
The Antarctic region is one of the best preserved environments in the world. However, human activities such as the input of sewage result in the alteration of this pristine site. We report baseline values of faecal sterols in Admiralty Bay, Antarctica. Four sediment cores were collected during the 2006/2007 austral summer at the Ezcurra (THP and BAR), Mackelar (REF) and Martel (BTP) inlets. Concentrations of faecal sterols (coprostanol + epicoprostanol) were <0.16 lg g_1, suggesting no sewage contamination and probable ‘‘biogenic’’ contributions for these compounds. Baseline values, calculated using the mean concentration of faecal sterols in core layers for THP, BAR, REF and BTP, were 0.04 } 0.02, 0.03 } 0.01, 0.07 } 0.01 and 0.04 } 0....
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