Presentation Details
The effect of sensory pollutants on mixed-species chorus dynamics  

Ana M.Ospina-Larrea1, Adriana A.Bustos1, Jabez Shin1, Ximena E.Bernal1, 2.

1Department of Biological Sciences, Purdue University, West Lafayette, IN, USA.2Smithsonian Tropical Research Institute, Apartado 0843-03092, Gamboa Panama

Abstract


Urbanization reshapes sensory environments through artificial light at night (ALAN) and traffic noise, interfering with signal production, transmission, and receiver responses. Research has mainly focused on individual responses to noise or ALAN in isolation, and less is known about their combined effects, despite their frequent co-occurrence in urban habitats. Thus, it remains unclear how these stressors influence chorus-level dynamics. Frog choruses are social systems in which timing, participation, and acoustic energy relate to mating opportunities and reproductive success. We investigated the independent and combined effects of ALAN and traffic noise by broadcasting these pollutants to natural choruses. We quantified short-term changes in chorus energy, frequency structure, and temporal dynamics. We predicted that traffic noise would filter out low-frequency species, while ALAN would reduce calling motivation and participation. Simultaneous exposure could amplify disruptions beyond individual effects. This study provides insights into how sensory pollutants affect chorus dynamics in rapidly changing environments and how frogs may cope with sensory disturbances.

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