Evening Choruses in the Perth Canyon, 2000-2014

An evening chorus centered near 2.2 kHz was recorded from seabed receivers in 430–490 m depth overlooking the Perth Canyon, Western Australia, across 15 years from 2000 to 2014. The chorus, likely produced by Myctophidae fishes, reached maximum levels 2.1 hours post-sunset and was loudest from April to August each year. This dataset, provided by Parks Australia, suggests the chorus may act as an acoustic beacon indicating regions of high marine biomass.

Use Cases

• Analyze diurnal and seasonal patterns of marine soundscapes based on the 15-year time series.
• Model potential fish foraging behavior based on the chorus's timing and acoustic characteristics.
• Investigate correlations between acoustic activity and ocean productivity based on the described link to high biomass regions.
• Study the spatial extent of biological choruses based on the described sampling range exceeding 13–15 km offshore.

Strengths

• 15-year continuous time series from 2000 to 2014.
• Detailed acoustic metrics provided, including frequency (2.2 kHz), duration (2.1 hours), and decibel levels (74–76 dB).
• Clear geographic context: seabed receivers in the Perth Canyon, Western Australia, at 430–490 m depth.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The spatial extent of the chorus was not fully determined, exceeding only the known sampling range.

Provenance

Source

Parks Australia, referencing a source publication.

Collection Method

Recorded from seabed receivers.

Time Range

2000 to 2014

Freshness

Last updated 2026-07-15 02:45:34.798639; freshness should be verified.

Geography

Perth Canyon, Western Australia