Study area and data collection
The Forestry Corporation of NSW provided two years of acoustic data
files recorded between February 2018 and February 2020. A SongMeter 3 or
SongMeter 4 (Wildlife Acoustics Inc.) sound recorder was deployed at
each of the 20 study sites (see Appendix 1) in the KP Forest. Prior to
January 2019, each recorder recorded five minutes of audio per day at
dusk. The start time of each recording changed according to the time of
sunset that day. From the acoustic data provided by the Forestry
Corporation of NSW, eight frog species were identified as potential
indicators of ecological health. A list of previously annotated
detections (i.e. times, dates, and locations that these frogs had been
detected via manual listening) was also provided by the Forestry
Corporation of NSW (see Table 1 for the number of files where the
candidate frog species were present in annotated files).
Table 1 Count of annotated evaluation files where calls of candidate
frog species were present