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  • Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale

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    Turschwell519055-Published.pdf (1.675Mb)
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    Version of Record (VoR)
    Author(s)
    Turschwell, Mischa P
    Connolly, Rod M
    Dunic, Jillian C
    Sievers, Michael
    Buelow, Christina A
    Pearson, Ryan M
    Tulloch, Vivitskaia JD
    Côté, Isabelle M
    Unsworth, Richard KF
    Collier, Catherine J
    Brown, Christopher J
    Griffith University Author(s)
    Pearson, Ryan M.
    Sievers, Michael K.
    Turschwell, Mischa P.
    Connolly, Rod M.
    Buelow, Christina A.
    Brown, Chris J.
    Year published
    2021
    Metadata
    Show full item record
    Abstract
    Seagrass meadows are threatened by multiple pressures, jeopardizing the many benefits they provide to humanity and biodiversity, including climate regulation and food provision through fisheries production. Conservation of seagrass requires identification of the main pressures contributing to loss and the regions most at risk of ongoing loss. Here, we model trajectories of seagrass change at the global scale and show they are related to multiple anthropogenic pressures but that trajectories vary widely with seagrass life-history strategies. Rapidly declining trajectories of seagrass meadow extent (>25% loss from 2000 to 2010) ...
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    Seagrass meadows are threatened by multiple pressures, jeopardizing the many benefits they provide to humanity and biodiversity, including climate regulation and food provision through fisheries production. Conservation of seagrass requires identification of the main pressures contributing to loss and the regions most at risk of ongoing loss. Here, we model trajectories of seagrass change at the global scale and show they are related to multiple anthropogenic pressures but that trajectories vary widely with seagrass life-history strategies. Rapidly declining trajectories of seagrass meadow extent (>25% loss from 2000 to 2010) were most strongly associated with high pressures from destructive demersal fishing and poor water quality. Conversely, seagrass meadow extent was more likely to be increasing when these two pressures were low. Meadows dominated by seagrasses with persistent life-history strategies tended to have slowly changing or stable trajectories, while those with opportunistic species were more variable, with a higher probability of either rapidly declining or rapidly increasing. Global predictions of regions most at risk for decline show high-risk areas in Europe, North America, Japan, and southeast Asia, including places where comprehensive long-term monitoring data are lacking. Our results highlight where seagrass loss may be occurring unnoticed and where urgent conservation interventions are required to reverse loss and sustain their essential services.
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    Journal Title
    Proceedings of the National Academy of Sciences
    Volume
    118
    Issue
    45
    DOI
    https://doi.org/10.1073/pnas.2110802118
    Copyright Statement
    © The Author(s) 2021. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND 4.0) License, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Marine and estuarine ecology (incl. marine ichthyology)
    Ecological impacts of climate change and ecological adaptation
    Ecological applications
    Biological oceanography
    Publication URI
    http://hdl.handle.net/10072/409716
    Collection
    • Journal articles

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