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Airborne Toxins Drive Insect Numbers Down Dramatically
31 Aug
Summary
- Airborne pollutants, not just sulphur dioxide, impact insect populations.
- Nitrogen oxides are now a significant environmental concern for insects.
- Widespread insect declines are a disastrous consequence of pollution.
A significant decline in insect populations across Britain is being driven by airborne pollutants, according to a recent commentary. While a reduction in sulphur dioxide pollution has allowed some species, like the footman moth, to recover and even expand their range, this masks a more concerning trend.
Environmental shifts since the 1990s have seen nitrogen oxides emerge as a major airborne pollutant. These compounds, byproducts of internal combustion engines, now thrive in the current atmospheric conditions, benefiting certain lichens and algae, and consequently, the footman moth as a specific case.
However, this is not a universal recovery. Pollution from numerous sources continues to contribute to the widespread and disastrous reduction in numbers for most moth species and other insects. The footman moth's apparent success is an anomaly, not representative of the broader ecological damage occurring nationwide.
