The offshore ecosystem is increasingly important for the American lobster (Homarus americanus, Nephropidae) as a refuge from warming nearshore waters, yet the suitability of this habitat is potentially threatened by escalating noise from wind farm development. The types of sounds produced—intense acoustic impulses during construction and nearly continuous operational noise—occur at the same acoustic frequencies used by H. americanus. To address key knowledge gaps of how lobsters respond to anthropogenic noise, two methodological advances were developed. The first was collaborative research enabling offshore wind farm soundscape measurements directly in lobster habitat. This was achieved through a partnership with the lobster fishing industry to deploy acoustic recorders in lobster traps, thus collecting passive acoustic data at the depth of benthic species with data retrievable on a timescale allowing relatively quick insights for stakeholders. The second was advancing a lobster-borne, bio-logging tag for use in experiments addressing stress responses to anthropogenic noise. Accelerometer and heart rate sensors monitor behavioral and heart rate changes, allowing an assessment of how noise may be perceived as a stressor. These new tools and applications highlight how our understanding of noise impacts on invertebrates can be enriched through fishing industry partnerships and bio-logging tag technology.

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Assessing the Impacts of Wind Farm-Associated Noise Pollution on Physiological Stress in the American Lobster (Homarus americanus)

  • Andria K. Salas,
  • Michael Long,
  • Julien Bonnel,
  • N. David Bethoney,
  • T. Aran Mooney

摘要

The offshore ecosystem is increasingly important for the American lobster (Homarus americanus, Nephropidae) as a refuge from warming nearshore waters, yet the suitability of this habitat is potentially threatened by escalating noise from wind farm development. The types of sounds produced—intense acoustic impulses during construction and nearly continuous operational noise—occur at the same acoustic frequencies used by H. americanus. To address key knowledge gaps of how lobsters respond to anthropogenic noise, two methodological advances were developed. The first was collaborative research enabling offshore wind farm soundscape measurements directly in lobster habitat. This was achieved through a partnership with the lobster fishing industry to deploy acoustic recorders in lobster traps, thus collecting passive acoustic data at the depth of benthic species with data retrievable on a timescale allowing relatively quick insights for stakeholders. The second was advancing a lobster-borne, bio-logging tag for use in experiments addressing stress responses to anthropogenic noise. Accelerometer and heart rate sensors monitor behavioral and heart rate changes, allowing an assessment of how noise may be perceived as a stressor. These new tools and applications highlight how our understanding of noise impacts on invertebrates can be enriched through fishing industry partnerships and bio-logging tag technology.