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The global distribution of seagrass meadows

Len J McKenzie Orcid Logo, Lina M Nordlund Orcid Logo, Benjamin L Jones Orcid Logo, Leanne C Cullen-Unsworth Orcid Logo, Chris Roelfsema Orcid Logo, Richard Unsworth Orcid Logo

Environmental Research Letters, Volume: 15, Issue: 7, Start page: 074041

Swansea University Author: Richard Unsworth Orcid Logo

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DOI (Published version): 10.1088/1748-9326/ab7d06

Abstract

Seagrass meadows globally are under pressure with worldwide loss and degradation, but there is a growing recognition of the global importance of seagrass ecosystem services, particularly as a major carbon sink and as fisheries habitat. Estimates of global seagrass spatial distribution differ greatly...

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Published in: Environmental Research Letters
ISSN: 1748-9326
Published: IOP Publishing 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55015
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spelling 2023-03-13T10:03:32.3019280 v2 55015 2020-08-18 The global distribution of seagrass meadows b0f33acd13a3ab541cf2aaea27f4fc2f 0000-0003-0036-9724 Richard Unsworth Richard Unsworth true false 2020-08-18 SBI Seagrass meadows globally are under pressure with worldwide loss and degradation, but there is a growing recognition of the global importance of seagrass ecosystem services, particularly as a major carbon sink and as fisheries habitat. Estimates of global seagrass spatial distribution differ greatly throughout the published literature, ranging from 177 000 to 600 000 km2 with models suggesting potential distribution an order of magnitude higher. The requirements of the Paris Climate Agreement by outlining National Determined Contributions (NDC's) to reduce emissions is placing an increased global focus on the spatial extent, loss and restoration of seagrass meadows. Now more than ever there is a need to provide a more accurate and consistent measure of the global spatial distribution of seagrass. There is also a need to be able to assess the global spread of other seagrass ecosystem services and in their extension, the values of these services. In this study, by rationalising and updating a range of existing datasets of seagrass distribution around the globe, we have estimated with Moderate to High confidence the global seagrass area to date as 160 387 km2, but possibly 266 562 km2 with lower confidence. We break this global estimate down to a national level with a detailed analysis of the current state of mapped distribution and estimates of seagrass area per country. Accurate estimates, however, are challenged by large areas remaining unmapped and inconsistent measures being used. Through the examination of current global maps, we are able to propose a pathway forward for improving mapping of this important resource. More accurate measure of global #seagrass distribution, critical for assessing current state and trends Journal Article Environmental Research Letters 15 7 074041 IOP Publishing 1748-9326 Mapping, species distribution, eelgrass, sea grass, global extent, spatial distribution 1 7 2020 2020-07-01 10.1088/1748-9326/ab7d06 http://dx.doi.org/10.1088/1748-9326/ab7d06 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2023-03-13T10:03:32.3019280 2020-08-18T16:45:42.5015316 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Len J McKenzie 0000-0003-1294-3770 1 Lina M Nordlund 0000-0002-4450-2331 2 Benjamin L Jones 0000-0002-6058-9692 3 Leanne C Cullen-Unsworth 0000-0002-9134-7266 4 Chris Roelfsema 0000-0003-0182-1356 5 Richard Unsworth 0000-0003-0036-9724 6
title The global distribution of seagrass meadows
spellingShingle The global distribution of seagrass meadows
Richard Unsworth
title_short The global distribution of seagrass meadows
title_full The global distribution of seagrass meadows
title_fullStr The global distribution of seagrass meadows
title_full_unstemmed The global distribution of seagrass meadows
title_sort The global distribution of seagrass meadows
author_id_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f
author_id_fullname_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f_***_Richard Unsworth
author Richard Unsworth
author2 Len J McKenzie
Lina M Nordlund
Benjamin L Jones
Leanne C Cullen-Unsworth
Chris Roelfsema
Richard Unsworth
format Journal article
container_title Environmental Research Letters
container_volume 15
container_issue 7
container_start_page 074041
publishDate 2020
institution Swansea University
issn 1748-9326
doi_str_mv 10.1088/1748-9326/ab7d06
publisher IOP Publishing
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
url http://dx.doi.org/10.1088/1748-9326/ab7d06
document_store_str 0
active_str 0
description Seagrass meadows globally are under pressure with worldwide loss and degradation, but there is a growing recognition of the global importance of seagrass ecosystem services, particularly as a major carbon sink and as fisheries habitat. Estimates of global seagrass spatial distribution differ greatly throughout the published literature, ranging from 177 000 to 600 000 km2 with models suggesting potential distribution an order of magnitude higher. The requirements of the Paris Climate Agreement by outlining National Determined Contributions (NDC's) to reduce emissions is placing an increased global focus on the spatial extent, loss and restoration of seagrass meadows. Now more than ever there is a need to provide a more accurate and consistent measure of the global spatial distribution of seagrass. There is also a need to be able to assess the global spread of other seagrass ecosystem services and in their extension, the values of these services. In this study, by rationalising and updating a range of existing datasets of seagrass distribution around the globe, we have estimated with Moderate to High confidence the global seagrass area to date as 160 387 km2, but possibly 266 562 km2 with lower confidence. We break this global estimate down to a national level with a detailed analysis of the current state of mapped distribution and estimates of seagrass area per country. Accurate estimates, however, are challenged by large areas remaining unmapped and inconsistent measures being used. Through the examination of current global maps, we are able to propose a pathway forward for improving mapping of this important resource. More accurate measure of global #seagrass distribution, critical for assessing current state and trends
published_date 2020-07-01T04:08:56Z
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score 11.037166

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