Anthropogenic noise from shipping, road traffic, construction, and sonar affects animal communication, foraging, stress physiology, and reproduction, with significant welfare implications across terrestrial and marine ecosystems.
Key Facts
Navy sonar has been linked to mass strandings of beaked whales who suffer decompression-like injuries fleeing the noise
Road traffic noise reduces bird song diversity and complexity within 100 metres of major roads
Chronic noise exposure elevates cortisol in songbirds by up to 30% in experimental studies
Ambient ocean noise has increased by 20 decibels in some shipping lanes since the 1960s
Anthropogenic noise masks echolocation in bats, reducing foraging efficiency by up to 50% in some studies
Welfare Considerations
Noise pollution causes welfare harm through chronic physiological stress, impaired communication, reduced foraging efficiency, and acute injury. Beaked whale strandings associated with military sonar represent acute welfare crises affecting entire pods. Chronic road noise induces stress hormones in songbirds that suppress immune function and reduce reproductive success. Fish exposed to pile-driving noise during offshore construction experience burst swim bladders and haemorrhaging. The global scale of anthropogenic noise means that virtually all wild animals now live in altered acoustic environments.
What You Can Do
Support campaigns for speed reductions in key shipping lanes to reduce underwater noise levels
Advocate for buffer zones around marine protected areas where noise-generating activities are restricted
Back campaigns for quieter road surfaces and vegetated sound barriers in wildlife-sensitive corridors
Report and oppose unnecessary fireworks use near wildlife habitats and during sensitive breeding seasons