Acoustic Communication in Anthropogenic Noise
Summary
Acoustic communication underpins vital behaviours such as mate attraction, territory defence and predator avoidance across diverse animal taxa. The expansion of human-generated noise—from traffic and industrial operations to urban development—has fundamentally altered natural soundscapes, posing novel challenges to the transmission and reception of biologically important signals. Anthropogenic noise can mask critical vocalisations, prompting species to exhibit vocal plasticity by shifting call frequencies, increasing amplitude or modifying temporal patterns. Such adjustments entail energetic costs and may only partially restore communication efficacy, potentially reducing reproductive success, disrupting anti-predator alerts and altering social interactions. In the longer term, persistent noise can fragment acoustic habitats, diminish population connectivity and influence community assembly by favouring species whose signals fall outside noisy frequency bands. Integrative research that couples physiology, cognition and ecology is revealing how both intrinsic factors (such as individual auditory sensitivity and learning ability) and extrinsic factors (noise intensity and spectral composition) determine species’ resilience or vulnerability. These insights are essential for designing evidence-based noise-mitigation strategies and conservation policies aimed at preserving the integrity of natural acoustic networks.
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Acoustic Communication in Anthropogenic Noise publication trend
The graph below shows the total number of articles in acoustic communication in anthropogenic noise across all publications each year (not limited to Nature Index journals).
Technical terms
Anthropogenic noise: Human-generated sound that alters the acoustic environment and may interfere with animal communication.
Acoustic masking: The process by which background noise reduces the detectability or clarity of biologically relevant signals.
Ambient soundscape: The composite of all acoustic elements present in an environment, including biotic, abiotic and anthropogenic sounds.
Vocal plasticity: The capacity of animals to adjust the spectral, temporal or amplitude characteristics of their vocal signals in response to environmental noise.
Peak hearing frequency: The frequency at which an organism’s auditory system exhibits maximum sensitivity, influencing its ability to detect and respond to signals under varying noise conditions.
References
- Background Acoustics in Terrestrial Ecology. Annual Review of Ecology Evolution and Systematics (2023).
- Cognition mediates response to anthropogenic noise in wild Western Australian magpies (Gmynorhina tibicen dorsalis). Global Change Biology (2023).
- Defining Mechanistic Pathways for Anthropogenic Noise Impact on Avian Species. Current Pollution Reports (2024).
- Noise Pollution Filters Bird Communities Based on Vocal Frequency. PLOS ONE (2011).
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