Each species occupies a distinct acoustic niche to avoid signal competition

Evidence

The acoustic niche hypothesis (ANH) states that every species has a unique acoustic space in which to structure the sonic species-specific signature to reduce interspecific competition and to optimize intraspecific communication mechanisms. — Almo Farina, Soundscape Ecology, 387

The acoustic niche hypothesis, as named by Bernie Krause in 1980 (Krause 2012), posits that the sound spectrum is a limited resource and that species try to reduce and minimize acoustic competition. The acoustic niche can be defined as partitioning into a frequency space the sounds of animals to reduce the interspecific masking effect. — Almo Farina, Soundscape Ecology, 466

Categorization

• DEFINE: Precise working definition of the acoustic niche hypothesis — core vocabulary for the book’s index/analysis framework, tracing to Krause 1980.
• corroborated: 3 independent passages support this claim — Almo Farina, Soundscape Ecology: Principles,…, 387; Almo Farina, Soundscape Ecology: Principles,…, 466
• XREF: connects to: Waterfall frogs shifted calls above the frequency their body size predicts — Almo Farina, Soundscape Ecology: Principles,…, 438; Biophony structure arises from four evolutionary pressure mechanisms — Almo Farina, Soundscape Ecology: Principles,…, 492; Species in a habitat partition acoustic space into distinct non-overlapping bandwidths. — Bernie Krause and Almo Farina, Using Ecoacoustic Methods to Survey the…, 39 (+6 more)

Broader Connections

• Species time-share the acoustic space to minimize signal interference #corroborates (0.95) — Almo Farina, Soundscape Ecology, 750
• Species shift calls to ultrasonic frequencies to escape constant noise masking #exemplifies (0.92) — Almo Farina, Soundscape Ecology, 1288
• Acoustic niche partitioning operates through both spatial movement and temporal scheduling #expands (0.88) — Almo Farina, Soundscape Ecology, 474