JOURNAL ARTICLE

Thawing permafrost is turning Arctic rivers orange—spelling trouble for fish.

  • Published In: Sciencemag.org, 2025. P. N.PAG 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Cornwall, Warren 3 of 3

Abstract

The article focuses on the alarming changes occurring in the Salmon River in northwestern Alaska, which has transformed from a symbol of pristine wilderness to one affected by climate change. Since 2019, the river has exhibited orange and yellow hues, indicative of acidic runoff and toxic metals leached from thawing permafrost, posing threats to aquatic life. Research indicates that at least 75 streams in the Brooks Range, including the Salmon, have similarly changed, with elevated levels of harmful metals detected in water samples. While acidity levels have not significantly increased due to natural counteracting factors, the presence of toxic metals is raising concerns about the health of local ecosystems, particularly salmon populations. [Extracted from the article]

Additional Information

  • Source:Sciencemag.org. 2025/09, pN.PAG
  • Document Type:Article
  • Subject Area:Agriculture and Agribusiness
  • Publication Date:2025
  • Accession Number:187864666
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