Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976 Pontal do Paraná, PR, Brazil.
Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976 Pontal do Paraná, PR, Brazil; Departamento de Geoquímica, Universidade Federal Fluminense, Morro do Valonguinho s/n, Niterói, Rio de Janeiro, RJ, Brazil.
Mar Pollut Bull. 2014 Jan 15;78(1-2):218-23. doi: 10.1016/j.marpolbul.2013.10.034. Epub 2013 Nov 14.
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 μg 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 ± 0.02 μg g(-1), respectively. These results established as natural contributions of faecal sterols, suggesting that these markers can be useful indicators of human-derived faecal input and contributing to monitoring programs to prevent anthropogenic impacts.
南极地区是世界上保存最完好的环境之一。然而，人类活动，如污水的输入，导致了这个原始地点的改变。我们报告了南极阿德默勒尔蒂湾粪便甾醇的基线值。在 2006/2007 年澳大利亚夏季，在 Ezcurra（THP 和 BAR）、Mackelar（REF）和 Martel（BTP）入口处采集了四个沉积物岩芯。粪便甾醇（粪甾醇+粪胆甾醇）的浓度<0.16μg g(-1)，表明没有污水污染，这些化合物可能是“生物成因”的。使用 THP、BAR、REF 和 BTP 岩芯层中粪便甾醇的平均浓度计算出的基线值分别为 0.04±0.02μg g(-1)、0.03±0.01μg g(-1)、0.07±0.01μg g(-1)和 0.04±0.02μg g(-1)。这些结果确立了粪便甾醇的自然贡献，表明这些标志物可以作为人类粪便输入的有用指标，并有助于监测计划，以防止人为影响。
