Minier L. auteur aut IRD Bertucci Frédéric auteur aut IRD Gay T. auteur aut IRD Chamot Z. auteur aut IRD Turco T. auteur aut IRD Schligler J. auteur aut IRD Mills S. C. auteur aut IRD Vidal M. auteur aut IRD Parmentier E. auteur aut IRD Sturny V. auteur aut IRD Mathevon N. auteur aut IRD Beauchaud M. auteur aut IRD Lecchini D. auteur aut IRD Médoc V. auteur aut IRD text journalArticle eng text/pdf born digital access In oceans, the noise generated by human activities has reached phenomenal proportions, with considerable harmful effects on marine life. Measuring this impact to achieve a sustainable balance for highly vulnerable marine ecosystems, such as coral reefs, is a critical environmental policy objective. Here, we demonstrate that anthropogenic noise alters the interactions of a coral reef fish with its environment and how this behavioural response to noise impairs foraging. In situ observations on the Moorea reef revealed that the damselfish Dascyllus emamo reacts to boat passage by moving closer to its coral bommie, considerably reducing the volume of water available to search for prey. Using boat noise playback experiments in microcosms, we studied D. emamo's behaviour and modeled its functional response (FR), which is the relationship between resource use and resource density, when feeding on juvenile shrimps. Similar to field observations, noise reduced D. emamo's spatial occupancy, accompanied by a lower FR, indicating a reduction in predation independent of prey density. Overall, noise-induced behavioural changes are likely to influence predator-prey interaction dynamics and ultimately the fitness of both protagonists. While there is an urgent need to assess the effect of anthropogenic noise on coral reefs, the ecological framework of the FR approach combined with behavioural metrics provides an essential tool for evaluating the cascading effects of noise on nested ecological interactions at the community level. specialized Anthropogenic noise Trophic interaction strength Functional response Coral reef POLYNESIE FRANCAISE 036 038 082 361 124770 [9 ] 2024 0269-7491 https://www.documentation.ird.fr/hor/fdi:010091266 10.1016/j.envpol.2024.124770 0269-7491 [F B010091266] https://www.documentation.ird.fr/hor/fdi:010091266 https://www.documentation.ird.fr/intranet/publi/2024-10/010091266.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2024-10-23 2025-11-06 fdi:010091266 fre