Air pollution from industry, vehicles, and agriculture affects wildlife health and welfare across terrestrial and aquatic ecosystems. Understanding these impacts builds the case for clean air policy.
Air pollution welfare impacts on wildlife are often indirect and chronic, operating through food web changes and physiological stress rather than acute toxicity events. Nitrogen deposition changes plant communities in ways that reduce invertebrate food sources for birds, causing nutritional stress without any direct toxic exposure. Urban air particulates burden wild bird respiratory systems in ways that reduce energy efficiency and immune function. Mercury from industrial emissions bioaccumulates through fish food chains, reaching neurologically damaging levels in top predators including orca and eagles. Clean air policy therefore serves wildlife welfare across ecosystems and food webs, making air quality advocacy a genuine animal welfare intervention.