Assessment of ecosystem biodiversity by acoustic diversity indices

Abstract

Assessment of ecosystem biodiversity by measurement of acoustic diversity was explored [B. L. Krause, Explorers J., Winter, 156–160 (1993)]. Specific acoustic indices (e.g., based on frequency spectrum) were developed and correlated with standard diversity indices (e.g., standard species abundance indices). Necessary technological infrastructures and analytic processes to measure acoustic dynamics of ecological biodiversity were explored. An automated web-based infrastructure capable of capturing, processing, and relaying real-time field measurements from multiple ecosystems to desktop and home computers was developed, tested, and implemented. Key infrastructure components were remote field instrumentation, remote computer processing, wireless digital relay instrumentation, Internet server, and automation, relational database, and website software. A dynamic digital library of ecological acoustic samples, correlated ecosystem attributes, and acoustic analysis methodologies was established. Library resources, including digital sound files captured from ecosystems, were made available to researchers and the public over the Internet [N. Metzger and M. Blumenthal, Realizing Info. Future, NAP, 113–119 (1994)]. Indices of acoustic ecosystem diversity were refined through application on existing digital ecosystem sound recordings and digital sounds captured from multiple ecosystems. The performance of these indices was compared to standard biodiversity indices applied to the same ecosystems.

Connecting soundscape to landscape: Which acoustic index best describes landscape configuration?

“…The theoretical underpinning of the application of acoustic indices is that communities with more audible species have a greater acoustic diversity and that biodiversity will correlate positively with acoustic diversity (Gage et al, 2001;Qi et al, 2008). Despite the existence of a suite of acoustic indices, few comparative studies have been undertaken.…”

Decision support for the efficient annotation of bioacoustic events

“…An alternative analytical approach for recordings of faunal vocalisations is to extract ecological indices which point to the presence of animal vocalisations of interest rather than identifying the actual species (Bart, 2005;Depraetere et al, in press;Gage et al, 2001;Gasc et al, 2013;Pieretti et al, 2011;Towsey et al, 2014). This approach is part of the emerging field of soundscape ecology that views the acoustic world from an ecological perspective rather than a species perspective (Pijanowski et al, 2011).…”

A Study on the Effects of Soundscapes on Forest Landscape Preference

“…이에 경관형용사를 활용하여 산림경관 선호도 및 경관 특성을 평가한 연구도 진행되었으나 (Ko et al, 2006;Cho et al, 2013) (Gage et al, 2001;Qi et al, 2008;Joo et al, 2011 (Feimer, 1979)과 자연경관, 산림 경관 및 사운드스케이프 경관평가를 수행한 선행연구 (Shin et al, 2007;Han et al, 2007;Joo, 2009;Cho et al, 2013) (Kim, 2009;Cho, 2010;Cho and Im, 2013) 에서 주로 쓰이고 있다.…”