Noise from human activity is emerging as a widespread threat to all forms of life. That is the stark, if not entirely unexpected, conclusion of a study led by two researchers at Queen’s University Belfast (Northern Ireland) and published in the journal Science. Their meta-analysis compiled 214 experimental papers covering 177 marine and terrestrial species across the six continents, and found evidence that anthropogenic sound disrupts about 80% of the species examined.
Earlier work had already documented that noise can impair individual animals, but the authors emphasize that their synthesis shows these effects go well beyond single organisms: entire populations and whole communities suffer altered dynamics as a consequence of human-made noise.
Sound pollution penetrates biological systems at multiple levels. It provokes physiological stress—ranging from cellular stress responses to changes in hormone levels, gene expression and breathing—impairs development (for example growth, body mass and size), and alters behaviour (including hunting success, escape from predators and mating activities). Those shifts cascade to influence species abundances and the web of interactions linking organisms.
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Although species differ widely in how sensitive they are to noise, the researchers stress that every habitat type is affected. As they put it, noise functions as a new selective pressure that is reshaping ecosystem dynamics and acts as a pervasive source of stress. This finding underscores the importance of protecting acoustic environments in addition to conserving physical habitats.
We already know that noise is a serious public health issue—often more harmful than air pollution—and that it imposes socio-economic costs measured in the tens of billions of euros in many regions. The new analysis adds ecosystem degradation to the tally of harms caused by ubiquitous anthropogenic sound. The researchers point to growing traffic, industrial operations and offshore activities—such as oil extraction and the use of sonar—as major contributors to the rise in environmental noise.
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Hi, I’m Ashley from the Decatur Metro team. I share essential information for a sustainable and responsible lifestyle.
