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Habitat acoustics of a neotropical lowland rainforest

N. Ellinger & W. Hödl (2003). Habitat acoustics of a neotropical lowland rainforest. Bioacoustics, Volume 13 (3): 297 -321



The acoustic characteristics of an Amazonian lowland rain forest study site in southern Venezuela was analysed to determine environmental constraints upon acoustic communication. Signal degradation was measured by conducting transmission experiments at different heights above ground level. Measurements of ambient noise served to determine possible communication distances for various times of day, heights above ground level and frequencies. “Sound windows” for acoustic longrange communication were found for low frequencies, calling heights in the midstorey and calling in the morning or during the night. Sound attenuation was affected by height and frequency but not by time of day. Background noise varied remarkably with time of day and frequency and had a greater impact on communication distance than signal attenuation.

habitat acoustics, sound transmission, acoustic communication, communication distance, Surumoni, Venezuela, tropical rain forest, Amazonia