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Harvard Forest REU Symposium Abstract 2010
- Title: Assessing Noise Pollution and Sound Propagation in Three Woodpecker Species Along Urbanization Gradient in Central Massachusetts
- Author: Anthony L Rivera (Brown University)
- Abstract:
Recent studies on the effects of urban noise on calling behavior have shown the adaptability of songbirds (suborder Passere). However, birds belonging to the order of Piciformes do not possess the same neurological adaptations that allow vocal flexibility. Rapid urbanization becomes problematic for these species, as communication is essential for survival and reproduction. This study examined sound environments around woodpecker nests for their impact on short-distance communication. I measured noise pollution along a suburban-rural gradient at nest sites of Red-bellied Woodpeckers (Melanerpes carolinus), Downy Woodpeckers (Picoides pubescens), and Yellow-bellied Sapsuckers (Sphyrapicus varius). Additional tests to examine sound propagation measured the amplitude of Downy Woodpecker calls between more urban versus more rural forests. Nests higher on the urbanization gradient experienced more anthropogenic noise disturbance, and vocalizations were able to propagate further. Trends suggest a difference in nest sites among species based on noise levels. Ultimately, we can begin devising a more intelligible approach to city planning for urban forests once further research is conducted on whether noise pollution or sound propagation has a greater effect on woodpecker communication.
- Research Category: Conservation and Management
