A thirty-year contaminant trend analysis in great lakes Native American fish harvests 1991-2021.
A thirty-year contaminant trend analysis in great lakes Native American fish harvests 1991-2021.
复制标题
1991-2021 年五大湖美洲原住民鱼类收成三十年污染物趋势分析。
DOI：
10.1016/j.envpol.2023.122075
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Ripley,Michael
中科院分区：
文献类型：
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作者：
Dellinger,MatthewJ;Daskalska,Lora;Ripley,Michael
位于苏圣的齐佩瓦渥太华资源管理局（CORA）。自1991年以来，密歇根州玛丽一直在监测上级湖、休伦湖和密歇根湖沃茨中湖鳟（Salvelinus namaycush）和湖白鲑（Coregonus clupeaformus）鱼片中汞（Hg）和多氯联苯（PCB）的污染物浓度。这一污染物监测方案对于支持五个奥吉布瓦和渥太华部落（统称为Anishinaabe）的渔业利益和消费建议至关重要，这些部落的祖先通过1836年《华盛顿条约》割让了土地，但保留了在这些土地和沃茨狩猎和捕鱼的权利。这份手稿提出了一个更新的污染物趋势分析，涵盖了过去三十年，我们观察到一个显着的下降趋势，在白鱼和湖鳟鱼收获部落渔民在所有湖泊中的中位多氯联苯。相对于前几十年，所有湖泊的白鱼捕捞量和密歇根湖的湖鳟鱼捕捞量的汞组织负荷中值显著增加。鱼片的线性回归，调整长度，也符合这些趋势。2021年，在密歇根湖所有湖鳟样本（PFAS总量中位数为6.81 ppb）和白色鱼样本（PFAS总量中位数为7.18 ppb）中均检测到全氟烷基和多氟烷基物质（PFAS）。这些主要污染物的减少和增加趋势都可能改变鱼类消费建议和相对于前几十年提出的建议的风险计算。
The Chippewa Ottawa Resource Authority (CORA) in Sault Ste. Marie, Michigan has been monitoring contaminant concentrations of mercury (Hg) and polychorinated biphenyls (PCBs) in the fillet portions of lake trout (Salvelinus namaycush) and lake whitefish (Coregonus clupeaformus) from waters of lakes Superior, Huron, and Michigan since 1991. This contaminant monitoring program is essential to supporting the fisheries interests and consumption advice for five Ojibwa and Ottawa tribes (collectively called Anishinaabe) whose ancestors ceded lands through the 1836 Treaty of Washingtonbut retained the rights to hunt and fish on those lands and waters. This manuscript presents an updated contaminant trend analysis covering the past three decades in which we observed a significant decreasing trend of median PCBs in both whitefish and lake trout harvested by tribal fishermen across all lakes. Median Hg tissue burdens significantly increased in whitefish harvests across all lakes and lake trout harvested from lake Michigan relative to earlier decades. Linear regression of fish fillets, adjusted for length, also conform to these trends. In 2021, per- and polyfluoroalkyl substances (PFAS) were detected in all Lake Michigan samples of lake trout (median 6.81pbb total PFAS) and in white fish (median 7.18 ppb total PFAS). Both decreasing and increasing trends of these key contaminants can alter fish consumption advice and risk calculations relative to advice presented in earlier decades.