Science

Gatineau Park foliage reveals local Cold War nuclear testing legacy

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Briefings

A study led by the University of Ottawa using sugar maple leaves from Gatineau Park analyzed radiocarbon levels over six decades. The research indicates that the effects of Cold War-era nuclear testing have recently vanished from the local biosphere, marking a significant shift in the region's environmental history.

Key points

• Scientists at the University of Ottawa used sugar maple leaves from Gatineau Park to measure radiocarbon levels over a 65-year period.
• The study, published in Scientific Reports, shows that Cold War nuclear testing effects have recently disappeared from the local biosphere.

Context

Researchers at the André E. Lalonde National Facility for Accelerator Mass Spectrometry (AEL-AMS) analyzed sugar maple leaves from Gatineau Park to measure radiocarbon levels. This 65-year record allows scientists to track how long nuclear testing effects persist in the local environment.

Limitations

The study relies on a single tree species and a limited geographic area. Results are based on published data and may not represent all local ecosystems or future trends.

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