Department of Environmental and Landscape Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
Environ Pollut. 2009 Dec;157(12):3192-8. doi: 10.1016/j.envpol.2009.06.001. Epub 2009 Jun 30.
This study serves to investigate the uptake of POPs in the different trophic levels (scrapers, collectors, predators, shredders) of macroinvertebrate communities sampled from a glacial and a non-glacial stream in the Italian Alps. The presented results show that the contaminant concentrations in glacial communities are generally higher compared to those from non-glacial catchments, highlighting the importance of glaciers as temporary sinks of atmospherically transported pollutants. Moreover, the data also suggests that in mountain systems snow plays an important role in influencing macroinvertebrate contamination. The main chemical uptake process to the macroinvertebrates is considered to be bioconcentration from water, as similar contaminant profiles were observed between the different trophic levels. The role of biomagnification/bioaccumulation is thought to be absent or negligible. The enrichment of chemicals observed in the predators is likely to be related to their greater lipid content compared to that of other feeding groups.
本研究旨在调查从意大利阿尔卑斯山的冰川和非冰川溪流中采集的大型无脊椎动物群落的不同营养级（刮食者、收集者、捕食者、碎食者）对持久性有机污染物的吸收情况。研究结果表明，与非冰川集水区相比，冰川群落中的污染物浓度普遍较高，突出了冰川作为大气传输污染物的临时汇的重要性。此外，数据还表明，在山区系统中，雪在影响大型无脊椎动物污染方面起着重要作用。大型无脊椎动物的主要化学吸收过程被认为是从水中的生物浓缩，因为在不同的营养级之间观察到了相似的污染物分布。生物放大/生物积累的作用被认为是不存在或可以忽略不计的。与其他摄食群体相比，捕食者体内化学物质的富集可能与其较高的脂质含量有关。
