2020.08.03 13:29World eye

ブラジル熱帯雨林の魚に食べると危険な濃度の水銀、違法採掘が原因

【サンパウロAFP=時事】ブラジル北部アマパ州のアマゾン熱帯雨林を生息地とする魚の約3分の1が、高濃度の水銀に汚染されており、食べると人体に有害だとする調査結果が発表された。水銀汚染の原因は、金の違法採掘だという。(写真は資料写真)
 世界自然保護基金(WWF)ブラジル支部と、ブラジルの3つの研究機関が共同で行った調査研究では、アマパ州の5地域で採取した400匹超の魚から非常に高濃度の水銀が検出された。魚を採取した水域には、環境保護区付近の川も含まれている。
 研究チームによると「(水銀の)濃度は、肉食魚の77.6%、雑食魚の20%、草食魚の2.4%で安全基準を超えていた」。また、「最も高濃度の水銀を含んでいた魚の種類」には、地域住民に「いちばんよく食べられている魚4種が含まれていた」という。
 これらの魚を200グラム以上食べると、健康に悪影響が及ぶ恐れがあると研究者らは指摘している。
 この研究結果は、学術誌「International Journal of Environmental Research and Public Health(国際環境研究公衆衛生ジャーナル)」に掲載された。【翻訳編集AFPBBNews】
〔AFP=時事〕(2020/08/03-13:29)
2020.08.03 13:29World eye

Study finds dangerous mercury levels in Amazon fish


Nearly one-third of the fish in the Brazilian Amazon state of Amapa have such high levels of mercury caused by illegal mining that they are dangerous for human consumption, according to a new study.
Scientists from the World Wildlife Fund's (WWF) Brazil office and three Brazilian research institutes found startling levels of mercury in more than 400 fish collected in five regions of Amapa, on the border with French Guyana.
The research included fish from included river systems near environmentally protected areas.
The level surpassed safety limits in 77.6 percent of carnivorous fish, 20 percent of omnivores and 2.4 percent of herbivores, they said in the study, published in the International Journal of Environmental Research and Public Health.
Four of the species with the highest concentrations of mercury are among those most widely consumed by humans in the region, it added.
Eating more than 200 grams (seven ounces) of those species could be harmful to a person's health, it said.
The high levels of mercury in the region are being caused by illegal gold mining, said conservationist Marcelo Oliveira of WWF-Brazil.
This study brings to light damning data on the level of destruction being caused by illegal gold mining in the Amazon, he said.
We already knew it was destroying the forest. Now we know how it is destroying the health of those who live there, too.
Brazilian President Jair Bolsonaro faces criticism for pushing to open up protected lands in the Amazon to mining and agricultural activity.
Activists say that will only accelerate the destruction of the world's biggest rainforest.

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