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September 12, 2025Ecological ApplicationsOpen Access

Influence of vessel disturbance on Pacific harbour porpoise (Phocoena phocoena vomerina) echolocation

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Authors

KDKarina DracottCRChloe V. RobinsonLDLauren E. Dares

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Overview

Research reveals vessel activity disrupts echolocation in harbour porpoises, suggesting quieter port operations could benefit marine life.

Key Points

  • An increase in vessel numbers significantly reduces both foraging and non-foraging echolocation activity in harbour porpoises.
  • Analysis indicated that faster vessels, particularly ferries and tugs, correlate with decreased echolocation in porpoises.
  • Using passive acoustic monitoring and AIS data, researchers established the relationship between vessel activity and porpoise echolocation rates.
  • Implementing a vessel slowdown to about 5 m/s has potential to ease disturbances for harbour porpoises and other marine species.

Cite This Study

Dracott et al. (2025) studied this question.

synapsesocial.com/papers/68d44f7b31b076d99fa56c67https://doi.org/10.1002/eap.70076
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