Read the following transcript excerpt from an audio interview between a science correspondent and Dr. Sofia Navarro, a marine eco-acoustician studying marine habitat recovery:
Correspondent: 'When conservationists broadcast recordings of healthy coral reefs into degraded marine zones, juvenile fish recruitment increases significantly within weeks. Does this mean acoustic enrichment alone can fully restore degraded reefs?'
Dr. Navarro: 'Acoustic cues certainly guide larval settlement, as young organisms interpret sound diversity as an indicator of shelter and foraging density. However, if the underlying substrate lacks structural complexity or is covered in toxic macroalgae, those settling larvae experience high post-settlement mortality. Furthermore, when nearby commercial vessel traffic produces low-frequency noise, the artificial acoustic cues are masked entirely, rendering the sound broadcasts ineffective regardless of speaker volume.'
Based on the interview, match each speaker observation to its logical implication.
- Juvenile fish actively navigate toward areas broadcasting healthy reef soundscapes.Young marine organisms rely on biological acoustic cues as environmental proxies for habitat quality and food availability.
- Larvae settling in structurally degraded zones suffer elevated post-settlement mortality.Acoustic interventions produce sustainable population recovery only when integrated with physical habitat restoration.
- Low-frequency commercial shipping noise drowns out artificial audio broadcasts.Maritime traffic regulations and noise zoning are essential prerequisites for bioacoustic conservation tools to succeed.
- Acoustic enrichment attracts marine organisms without altering substrate conditions or macroalgae coverage.Acoustic playback risks functioning as an ecological trap if implemented without adequate environmental carrying capacity.