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    Towards an acoustic-based coupled observation and modelling system for monitoring and predicting ecosystem dynamics of the open ocean

    Access Status
    Fulltext not available
    Authors
    Handegard, N.
    Buisson, L.
    Brehmer, P.
    Chalmers, S.
    De Robertis, A.
    Huse, G.
    Kloser, Rudy
    Macaulay, G.
    Maury, O.
    Ressler, P.
    Stenseth, N.
    Godø, O.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Handegard, N. and Buisson, L. and Brehmer, P. and Chalmers, S. and De Robertis, A. and Huse, G. and Kloser, R. et al. 2013. Towards an acoustic-based coupled observation and modelling system for monitoring and predicting ecosystem dynamics of the open ocean. FISH AND FISHERIES. 14 (4): pp. 605-615.
    Source Title
    FISH AND FISHERIES
    DOI
    10.1111/j.1467-2979.2012.00480.x
    ISSN
    1467-2960
    School
    Centre for Marine Science and Technology
    URI
    http://hdl.handle.net/20.500.11937/52815
    Collection
    • Curtin Research Publications
    Abstract

    Assessment of open-ocean ecosystems relies on understanding ecosystem dynamics, and development of end-to-end ecosystem models represents an approach that addresses these challenges. These models incorporate the population structure and dynamics of marine organisms at all trophic levels. Satellite remote sensing of ocean colour and direct at-sea measurements provide information on the lower trophic levels of the models, and fisheries studies provide information on top predator species. However, these models suffer from a lack of observations for the so-called mid-trophic levels, which are poorly sampled by conventional methods. This restricts further development, and we argue that acoustic observations from a range of platforms (e.g. buoys, moorings) can be linked to the ecosystem models to provide much-needed information on these trophic levels. To achieve this, the models need to be tailored to incorporate the available acoustic data, and the link from acoustic backscatter to biologically relevant variables (biomass, carbon, etc.) needs attention. Methods to progress this issue are proposed, including the development of observation models and focal areas for ground truthing. To ensure full use of the potential of acoustic techniques, we argue that a systematic and long-term strategy incorporating the following elements is required: development of metadata standards and automated data analysis, inclusion of acoustic sensors in large-scale observatory programmes, improvement of observation-model links, and efficient sampling strategies. Finally, these elements should be tied together in an observation-modelling framework, coordinated by international organizations, to improve our understanding and quantification of open-ocean ecosystem dynamics. © 2013 John Wiley & Sons Ltd.

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