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

Mischa P. Turschwell, Rod M. Connolly, Jillian C. Dunic, Michael Sievers, Christina A. Buelow, Ryan M. Pearson, Vivitskaia J. D. Tulloch, Isabelle M. Côté, Richard Unsworth Orcid Logo, Catherine J. Collier, Christopher J. Brown

Proceedings of the National Academy of Sciences, Volume: 118, Issue: 45, Start page: e2110802118

Swansea University Author: Richard Unsworth Orcid Logo

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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 a...

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Published in: Proceedings of the National Academy of Sciences
ISSN: 0027-8424 1091-6490
Published: Proceedings of the National Academy of Sciences 2021
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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 (&gt;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. 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spelling 2021-12-06T17:31:18.7430741 v2 58733 2021-11-22 Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale b0f33acd13a3ab541cf2aaea27f4fc2f 0000-0003-0036-9724 Richard Unsworth Richard Unsworth true false 2021-11-22 SBI 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. [Abstract copyright: Copyright © 2021 the Author(s). Published by PNAS.] Journal Article Proceedings of the National Academy of Sciences 118 45 e2110802118 Proceedings of the National Academy of Sciences 0027-8424 1091-6490 ecosystem decline, global status, cumulative pressures, modeling 9 11 2021 2021-11-09 10.1073/pnas.2110802118 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2021-12-06T17:31:18.7430741 2021-11-22T11:10:15.3925413 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Mischa P. Turschwell 1 Rod M. Connolly 2 Jillian C. Dunic 3 Michael Sievers 4 Christina A. Buelow 5 Ryan M. Pearson 6 Vivitskaia J. D. Tulloch 7 Isabelle M. Côté 8 Richard Unsworth 0000-0003-0036-9724 9 Catherine J. Collier 10 Christopher J. Brown 11 58733__21620__70c833d7336d43d2b0dbd814ae4a6aba.pdf 58733.pdf 2021-11-22T11:12:12.8064463 Output 1658552 application/pdf Version of Record true Copyright © 2021 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
spellingShingle Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
Richard Unsworth
title_short Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
title_full Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
title_fullStr Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
title_full_unstemmed Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
title_sort Anthropogenic pressures and life history predict trajectories of seagrass meadow extent at a global scale
author_id_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f
author_id_fullname_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f_***_Richard Unsworth
author Richard Unsworth
author2 Mischa P. Turschwell
Rod M. Connolly
Jillian C. Dunic
Michael Sievers
Christina A. Buelow
Ryan M. Pearson
Vivitskaia J. D. Tulloch
Isabelle M. Côté
Richard Unsworth
Catherine J. Collier
Christopher J. Brown
format Journal article
container_title Proceedings of the National Academy of Sciences
container_volume 118
container_issue 45
container_start_page e2110802118
publishDate 2021
institution Swansea University
issn 0027-8424
1091-6490
doi_str_mv 10.1073/pnas.2110802118
publisher Proceedings of the National Academy of Sciences
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
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department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description 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. [Abstract copyright: Copyright © 2021 the Author(s). Published by PNAS.]
published_date 2021-11-09T04:15:30Z
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