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Metal Mobilization from Thawing Permafrost Is an Emergent Risk to Water Resources.
Elliott K Skierszkan1,2, John W Dockrey3, Matthew B J Lindsay2
1Department of Earth Sciences, Carleton University, 2115 Herzberg Laboratories, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6.
Permafrost thaw significantly impacts metal mobility in the Critical Zone, affecting water resources and ecosystem health. Understanding these changes is crucial for managing environmental risks associated with thawing landscapes.
Area of Science:
- Environmental Science
- Geochemistry
- Ecology
Background:
- Metals are essential in Earth's Critical Zone but can be toxic at high concentrations.
- Permafrost thaw alters physical and chemical processes governing metal mobility.
- Changes in metal mobility have global implications for water resources and ecosystem health.
Purpose of the Study:
- To outline key factors influencing metal mobility in thawing permafrost.
- To highlight the need for interdisciplinary research on this emerging issue.
Main Methods:
- This perspective synthesizes current knowledge on metal mobility in thawing permafrost.
- It identifies critical knowledge gaps and research priorities.
Main Results:
- Permafrost thaw alters water movement, solute transport, and biogeochemical interactions.
- These alterations lead to nonintuitive changes in metal mobility.
- Understanding these dynamics is essential for predicting environmental impacts.
Conclusions:
- Thawing permafrost presents complex challenges for metal mobility.
- Urgent, interdisciplinary research is needed to address the global implications for water and ecosystems.
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