Anthropogenic contaminants in glacial environments II: Release and downstream consequences

Anthropogenic contamination has been detected in glacial and proglacial environments around the globe. Through mechanisms of secondary release, these contaminants are finding their way into glacial hydrological systems and downstream environments, with potential to impact hundreds of millions of peo...

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Bibliographic Details
Published in:Progress in physical geography 2022-10, Vol.46 (5), p.790-808
Main Authors: Beard, Dylan B, Clason, Caroline C, Rangecroft, Sally, Poniecka, Ewa, Ward, Kim J, Blake, Will H
Format: Article
Language:English
Subjects:
Accumulation
Anthropogenic factors
Contaminants
Downstream effects
Embedding
Energy security
Environmental health
Food
Food contamination
Glaciers
Human influences
Hydrology
Meltwater
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Summary:Anthropogenic contamination has been detected in glacial and proglacial environments around the globe. Through mechanisms of secondary release, these contaminants are finding their way into glacial hydrological systems and downstream environments, with potential to impact hundreds of millions of people who rely on glacial meltwater for water, food and energy security worldwide. The first part of our progress report outlined the sources and accumulation mechanisms of contaminants in glacial environments (Part I: Inputs and accumulation). Here we assess processes of contaminant release, pathways to downstream environments, and socio-environmental consequences. We reflect on the potential impacts these contaminants could have for human, ecosystem, and environmental health, as well as framing glacial contaminants within the context of the water-food-energy nexus. Improved understanding of these processes and impacts, while crucially embedding local knowledge, will help to develop key policy and mitigation strategies to address future risk of contaminant release from glaciers.
ISSN:0309-1333
1477-0296
DOI:10.1177/03091333221127342