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首页> 外文期刊>Chemosphere >Seabird colonies as relevant sources of pollutants in Antarctic ecosystems: Part 2 - Persistent Organic Pollutants
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Seabird colonies as relevant sources of pollutants in Antarctic ecosystems: Part 2 - Persistent Organic Pollutants

机译：海鸟殖民地作为南极生态系统中污染物的相关来源：第2部分-持久性有机污染物

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Despite typically not being taken into account (usually in favour of the 'global distillation' process), the input of persistent organic pollutants (POPS) through biological activities can be indeed relevant at the local scale in terrestrial polar environments when seabird colonies are considered. Seabirds can bio-accumulate and biomagnify POPs, gather in large numbers and excrete on land during their reproductive season, thus making them locally as relevant secondary sources of POPS. The first part of this study indicated that these colonies act as so for several essential and non-essential trace elements, and this second part tests the same hypothesis concerning POPS using the very same samples. Lichens (n = 55), mosses (n = 58) and soil (n = 37) were collected from 13 locations in the South Shetlands Archipelago during the austral summers of 2013-14 and 2014-15. They were divided in colony (within the colony itself for soil and within and surrounding the colony for vegetation) and control (at least 150 m away from any colony interference) and analysed for POPs such as organochlorine pesticides, polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers and stable isotopes (C and N). Results showed that colonies act clearly as a secondary source for PCBs and likely for hexachlorobenzene. As in the first part, probable local sources other than the colonies themselves are hypothesised because of high concentrations found in control sites. Again, soil seemed the most adequate matrix for the intended purposes especially because of some particularities in the absorption of animal-derived organic matter by vegetation, pointed out by stable isotope analyses. (C) 2018 Elsevier Ltd. All rights reserved.
机译：尽管通常没有考虑（通常赞成“全球蒸馏”过程），但考虑到海鸟殖民地，通过生物活动输入的持久性有机污染物（POPS）在陆地极地环境中的当地规模上的确是有意义的。海鸟可以在繁殖季节内生物积累和生物放大持久性有机污染物，在其繁殖季节大量聚集并在土地上排泄，因此使它们成为当地相关的POPS二级来源。这项研究的第一部分表明，这些菌落对几种必需和非必需的痕量元素具有相同的作用，而第二部分则使用相同的样本测试了关于POPS的相同假设。在2013-14和2014-15夏季，从南设得兰群岛的13个地点收集了地衣（n = 55），苔藓（n = 58）和土壤（n = 37）。将它们分为菌落（在菌落本身内部用于土壤，在菌落内部及其周围用于植被）和控制（距离任何菌落干扰至少150 m）并分析诸如有机氯农药，多氯联苯（PCB）和多溴化的POPs二苯醚和稳定同位素（C和N）。结果表明，菌落显然是PCBs和六氯苯的次要来源。与第一部分中一样，由于在对照位点发现了高浓度，因此推测了可能是本地菌落而不是菌落本身。同样，土壤似乎是最适合预定目的的基质，特别是由于稳定同位素分析指出，植被在吸收动物衍生的有机物方面具有某些特殊性。 （C）2018 Elsevier Ltd.保留所有权利。

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