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    Improving essential fish habitat designation to support sustainable ecosystem-based fisheries management

    Access Status
    Fulltext not available
    Authors
    Moore, Cordelia
    Drazen, J.
    Radford, Ben
    Kelley, C.
    Newman, Stephen
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Moore, C. and Drazen, J. and Radford, B. and Kelley, C. and Newman, S. 2016. Improving essential fish habitat designation to support sustainable ecosystem-based fisheries management. Marine Policy. 69: pp. 32-41.
    Source Title
    Marine Policy
    DOI
    10.1016/j.marpol.2016.03.021
    ISSN
    0308-597X
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/41807
    Collection
    • Curtin Research Publications
    Abstract

    A major limitation to fully integrated ecosystem based fishery management approaches is a lack of information on the spatial distribution of marine species and the environmental conditions shaping these distributions. This is particularly problematic for deep-water species that are hard to sample and are data poor. The past decade has seen the rapid development of a suite of advanced species distribution, or ecological niche, modelling approaches developed specifically to support efficient and targeted management. However, model performance can vary significantly and the appropriateness of which methods are best for a given application remains questionable. Species distribution models were developed for three commercially valuable Hawaiian deep-water eteline snappers: Etelis coruscans (Onaga), Etelis carbunculus (Ehu) and Pristipomoides filamentosus (Opakapaka). Distributional data for these species was relatively sparse. To identify the best method, model performance and distributional accuracy was assessed and compared using three approaches: Generalised Additive Models (GAM), Boosted Regression Trees (BRT) and Maximum Entropy (MaxEnt). Independent spatial validation data found MaxEnt consistently provided better model performance with ‘good’ model predictions (AUC =>0.8). Each species was influenced by a unique combination of environmental conditions, with depth, terrain (slope) and substrate (low lying unconsolidated sediments), being the three most important in shaping their distributions.Sustainable fisheries management, marine spatial planning and environmental decision support systems rely on an understanding species distribution patterns and habitat linkages. This study demonstrates that predictive species distribution modelling approaches can be used to accurately model and map sparse species distribution data across marine landscapes. The approach used herein was found to be an accurate tool to delineate species distributions and associated habitat linkages, account for species-specific differences and support sustainable ecosystem-based management.

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