Population‐level consequences of seismic surveys on fishes: An interdisciplinary challenge

Hans Slabbekoorn*, John Dalen, Dick de Haan, Hendrik V. Winter, Craig Radford, Michael A. Ainslie, Kevin D. Heaney, Tobias van Kooten, Len Thomas, John Harwood

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Offshore activities elevate ambient sound levels at sea, which may affect marine
fauna. We reviewed the literature about impact of airgun acoustic exposure on fish in terms of damage, disturbance and detection and explored the nature of impact assessment at population level. We provided a conceptual framework for how to address this interdisciplinary challenge, and we listed potential tools for investigation. We focused on limitations in data currently available, and we stressed the potential benefits from cross-species comparisons. Well-replicated and controlled studies do not exist for hearing thresholds and dose–response curves for airgun acoustic exposure. We especially lack insight into behavioural changes for free-ranging fish to actual seismic surveys and on lasting effects of behavioural changes in terms of time and energy budgets, missed feeding or mating opportunities, decreased performance in predator-prey interactions, and chronic stress effects on growth, development and reproduction. We also lack insight into whether any of these effects could have population-level consequences. General “population consequences of acoustic disturbance” (PCAD) models have been developed for marine mammals, but there has been little progress so far in other taxa. The acoustic world of fishes is quite different
from human perception and imagination as fish perceive particle motion and sound pressure. Progress is therefore also required in understanding the nature and extent to which fishes extract acoustic information from their environment. We addressed the challenges and opportunities for upscaling individual impact to the population, community and ecosystem level and provided a guide to critical gaps in our knowledge
Original languageEnglish
Pages (from-to)653-685
JournalFish and Fisheries
Volume20
Issue number4
Early online date3 May 2019
DOIs
Publication statusPublished - Jul 2019

Keywords

  • airgun
  • behavioural response
  • dynamic energy bidget
  • fish hearing
  • `population consequences of acoustic disturbance
  • stress physiology

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