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首页> 外文期刊>Journal of great lakes research >Assessment of fish consumption beneficial use impairment at the Great Lakes Thunder Bay and St. Marys River Areas of Concern, Canada
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Assessment of fish consumption beneficial use impairment at the Great Lakes Thunder Bay and St. Marys River Areas of Concern, Canada

机译：加拿大王湖雷湾和圣玛丽河河河河和圣玛丽河区的鱼类消费有益障碍评估

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The North American Great Lakes were designated with 43 locally degraded Areas of Concern (ADCs) in the 1980s. Remediation activities geared towards restoring beneficial use impairments (BUIs) at the AOCs have been conducted by both the American and Canadian governments. Here we examine if the fish consumption BUI has been restored at the Thunder Bay Harbour and St. Marys River AOCs within the Canadian waters by applying a three-tier assessment framework using the fish contaminant data collected by the Government of Ontario, Canada. Fish consumption advisories published by the government as well as simulated advisories based on the post-2005 data were examined in Tiers 1 and 2. The results highlighted that the restrictions advised on eating fish from the AOCs are mild and are typically similar to other non-AOC areas of lakes Superior and Huron. Temporal trend analyses of three contaminants of concern, mercury, PCB and dioxins/furans, generally showed substantial improvements over the last 30+ years and mostly continued declining trends in the recent years. These findings support a redesignation of the fish consumption BUI to "not impaired" at the two AOCs. As a follow up, it is recommended to confirm improvements in the dioxin/furan/dioxin-like PCB levels in fish at the Thunder Bay AOC. It is also advisable to conduct a survey to properly define "beneficial use" of fish consumption for the AOCs (i.e., which fish and in what quantity do people eat), and thereby validate the critical assumption of 8+ meals/month as a non-restrictive advice used in this assessment. Crown Copyright (C) 2020 Published by Elsevier B.V. on behalf of International Association for Great Lakes Research. All rights reserved.
机译：20世纪80年代，北美大湖区被指定有43个当地劣化的关注领域（ADC）。美国和加拿大各国政府对AOC恢复有益使用损伤（BUIS）的补救活动是由美国和加拿大政府进行的。在这里，我们通过使用由加拿大政府收集的鱼类污染物数据应用三层评估框架，检查鱼消费BUI是否已在加拿大水域内的雷湾港和圣玛丽河AOC恢复。政府出版的鱼类消费咨询以及基于2005年后数据的模拟咨询在层级1和2.结果中突出显示，从AOC中饮食鱼类的限制是温和的，通常与其他非湖泊的AOC地区优越和休伦。关注的三种污染物，汞，PCB和二恶英/呋喃的时间趋势分析一般表现出在过去30多年的大量改进，近年来大多数持续下降趋势。这些调查结果支持在两个AOC中重新设计鱼消费BUI以“不受损”。作为随访，建议在雷湾AOC鱼中确认在鱼中的二恶英/呋喃/二恶英PCB水平的改善。也建议进行调查，以适当地定义鱼类消费的“有益使用”（即哪种鱼类和人们吃什么），从而验证8+膳食/月份的关键假设作为非 - 在本评估中使用的建议。皇冠版权（c）2020由elsevier b.v出版的。代表国际大湖泊研究协会。版权所有。

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