2019_programme: ATLANTIC DEEPWATER ECOSYSTEM OBSERVATORY NETWORK (ADEON): SOUNDSCAPES OF DEEP-SEA HABITATS

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  • Session: 03. Acoustic Monitoring of Ocean Environments and Processes: Biology, Ecology, Geophysics and Man-made activities
    Organiser(s): Ratilal Purnima, Miksis-Olds Jennifer
  • Lecture: ATLANTIC DEEPWATER ECOSYSTEM OBSERVATORY NETWORK (ADEON): SOUNDSCAPES OF DEEP-SEA HABITATS [invited]
    Paper ID: 878
    Author(s): Miksis-Olds Jennifer, Wilford Dylan, Martin Bruce
    Presenter: Miksis-Olds Jennifer
    Presentation type: oral
    Abstract: A seven node Atlantic Deepwater Ecosystem Observatory Network (ADEON) for the U.S. Mid- and South Atlantic Outer Continental Shelf (OCS) was established in November 2017. Passive acoustic recordings at each location allow for long term measurement of soundscapes, marine life dynamics, and human ocean use along and across the OCS. Recordings were analysed covering a one year period from November 2017-November 2018. Spectrograms, power spectral density, spectral probability density, acoustic complexity index (ACI), and biodiversity indices were assessed. There are visible differences between the two deep-water coral habitats at different depths (790 m and 461 m) indicating that the mechanistic drivers of the soundscapes in these two regions may not be the same. Minute averages of the ACI over the 1 Hz-4 kHz bandwidth were compared over time and showed a high level of correlation between the deep-water coral habitats. The deeper coral habitat showed greater variability in acoustic complexity. Across and along shelf source comparisons were also made between locations for marine mammals, airguns, and vessels. Measurements made within this research program will serve as a baseline for pattern and trend analyses of ambient sound and the ecosystem components contributing to the OCS soundscapes. \n\nStudy concept, oversight, and funding were provided by the U.S. Department of the Interior, Bureau of Ocean Energy Management, Environmental Studies Program, Washington, DC under contract Number M16PC00003, in partnership with ONR and NOAA. Funding for ship time was provided under separate contracts by ONR, Code 32.\n
  • Corresponding author: Dr Miksis-Olds Jennifer
    Affiliation: University of New Hampshire, School of Marine Science & Ocean Engineering
    Country: United States
    e-mail:

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