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The ambient sound field in three freshwater environments

Giles, J.C., Davis, J.A., McCauley, R. and Kuchling, G. (2005) The ambient sound field in three freshwater environments. In: Annual Conference of the Australian Acoustical Society 2005: Acoustics in a Changing Environment, Acoustics 2005, 9 - 11 November, Busselton, Western Australia pp. 315-321.

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A number of ambient sound recordings took place in three clear-water wetlands in Perth, Western Australia for one month in summer, 2003. The wetlands differed in terms of their degree of enrichment, habitat structure, substrate material and water depth. Temporal and spatial variations were evident in the macroinvertebrate distributions and the biologic calling activity, with seven distinct calls recognised in this study. Noise levels were greatest at dusk and to a lesser extent at midnight with chorusing only evident at the most enriched wetland. Biologics used frequencies ranging from 3 kHz up to around 14 kHz with the exception of the 'bird-like song' which extended from 500 Hz up to around 10 kHz. There was negligible sound contribution to ambient noise at low wind speeds of Beaufort Wind Scale 0, 1 & 2.

Item Type: Conference Paper
Murdoch Affiliation(s): School of Environmental Science
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