Modelling exposure of oceanic higher trophic-level consumers to polychlorinated biphenyls: Pollution ‘hotspots’ in relation to mass mortality events of marine mammals
Modelling exposure of oceanic higher trophic-level consumers to polychlorinated biphenyls: Pollution ‘hotspots’ in relation to mass mortality events of marine mammals
复制标题
模拟海洋高营养级消费者对多氯联苯的暴露：与海洋哺乳动物大规模死亡事件相关的污染“热点”
DOI：
10.1016/j.marpolbul.2014.06.031
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发表时间：
2014
影响因子：
5.8
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Handoh;I.C.;Kawai;T.
在过去的大规模死亡事件中，海洋哺乳动物可能容易受到感染，因为它们的免疫系统通过环境污染物(如多氯联苯)的生物积累而受到抑制。我们汇编了33种海洋哺乳动物的死亡事件数据集，并使用精细先进的跨境环境模型(FATE)来模拟全球鱼类群落对多氯联苯同系物的暴露，以定义多氯联苯的临界暴露水平(CEL)，超过该水平可能会发生大规模死亡事件。我们的建模方法使我们能够在营养较高的消费者暴露于多氯联苯的背景下描述大规模死亡事件，并确定海洋污染‘热点’，如地中海和西北欧海岸。我们证明，CELS可以用于量化化学污染的行星边界，在这个边界下，海洋哺乳动物和人类可以存在一个安全的工作空间。
Marine mammals in the past mass mortality events may have been susceptible to infection because their immune systems were suppressed through the bioaccumulation of environmental pollutants such as polychlorinated biphenyls (PCBs). We compiled mortality event data sets of 33 marine mammal species, and employed a Finely-Advanced Transboundary Environmental model (FATE) to model the exposure of the global fish community to PCB congeners, in order to define critical exposure levels (CELs) of PCBs above which mass mortality events are likely to occur. Our modelling approach enabled us to describe the mass mortality events in the context of exposure of higher-trophic consumers to PCBs and to identify marine pollution ‘hotspots’ such as the Mediterranean Sea and north-western European coasts. We demonstrated that the CELs can be applied to quantify a chemical pollution Planetary Boundary, under which a safe operating space for marine mammals and humanity can exist.