南极半岛沉积物和海鸟羽毛中的汞积累。
Mercury accumulation in sediments and seabird feathers from the Antarctic Peninsula.
作者信息
Calle Paola, Alvarado Omar, Monserrate Lorena, Cevallos Juan Manuel, Calle Nastenka, Alava Juan José
机构信息
Escuela Superior Politécnica del Litoral, Facultad de Ciencias Marítimas, Oceánicas y Recursos Naturales, Guayaquil, Ecuador.
Escuela Superior Politécnica del Litoral, Facultad de Ciencias Marítimas, Oceánicas y Recursos Naturales, Guayaquil, Ecuador.
出版信息
Mar Pollut Bull. 2015 Feb 28;91(2):410-7. doi: 10.1016/j.marpolbul.2014.10.009. Epub 2014 Nov 22.
In an effort to assess the impact of mercury in the Antarctic Peninsula, we conducted ecotoxicological research in this region during the summer of 2012 and 2013. The objectives were to assess: (a) mercury levels in sediment samples; (b) mercury accumulation in Antarctic seabird feathers: Catharacta lonnbergi (brown skua), Pygoscelis papua (gentoo penguin) and Pygoscelis antarctica (chinstrap penguin); and (c) biomagnification (BMF predator/prey) and biota sediment accumulation (BSAF skuas/sediment) factors. Mercury concentrations in sediment were relatively low. Mercury concentrations were significantly higher in brown skuas and gentoo penguins than in chinstrap penguins (2012), and significantly higher in brown skuas than in both penguins (2013). BMF indicated 2-7.5 times greater mercury levels in brown skuas than in penguins. BSAF values suggested an apparent temporal decrease of 18.2% of this ratio from 2012 to 2013. Long-range environmental transport is the likely route of entry of mercury into the Antarctic Peninsula.
为了评估汞对南极半岛的影响，我们于2012年和2013年夏季在该地区开展了生态毒理学研究。目标是评估：(a)沉积物样本中的汞含量；(b)南极海鸟羽毛中的汞积累情况：棕贼鸥（Catharacta lonnbergi）、巴布亚企鹅（Pygoscelis papua）和南极帽带企鹅（Pygoscelis antarctica）；以及(c)生物放大作用（捕食者/猎物生物放大系数）和生物群-沉积物积累系数（贼鸥/沉积物生物积累系数）。沉积物中的汞浓度相对较低。2012年，棕贼鸥和巴布亚企鹅体内的汞浓度显著高于南极帽带企鹅，2013年，棕贼鸥体内的汞浓度显著高于两种企鹅。生物放大系数表明，棕贼鸥体内的汞含量比企鹅高2至7.5倍。生物群-沉积物积累系数值表明，从2012年到2013年，该比例明显下降了18.2%。长距离环境迁移可能是汞进入南极半岛的途径。
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