Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom

The spatial extent of seagrass is poorly mapped, and knowledge of historical loss is limited. Here, we collated empirical and qualitative data using systematic review methods to provide unique analysis on seagrass occurrence and loss in the United Kingdom. We document 8,493 ha of recently mapped sea...

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Main Authors: Alix E. Green, Richard K. F. Unsworth, Michael A. Chadwick, Peter J. S. Jones
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-03-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2021.629962/full
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author Alix E. Green
Richard K. F. Unsworth
Richard K. F. Unsworth
Michael A. Chadwick
Peter J. S. Jones
author_facet Alix E. Green
Richard K. F. Unsworth
Richard K. F. Unsworth
Michael A. Chadwick
Peter J. S. Jones
author_sort Alix E. Green
collection DOAJ
description The spatial extent of seagrass is poorly mapped, and knowledge of historical loss is limited. Here, we collated empirical and qualitative data using systematic review methods to provide unique analysis on seagrass occurrence and loss in the United Kingdom. We document 8,493 ha of recently mapped seagrass in the United Kingdom since 1998. This equates to an estimated 0.9 Mt of carbon, which, in the current carbon market represents about £22 million. Using simple models to estimate seagrass declines triangulated against habitat suitability models, we provide evidence of catastrophic seagrass loss; at least 44% of United Kingdom’s seagrasses have been lost since 1936, 39% since the 1980’s. However, losses over longer time spans may be as high as 92%. Based on these estimates, historical seagrass meadows could have stored 11.5 Mt of carbon and supported approximately 400 million fish. Our results demonstrate the vast scale of losses and highlight the opportunities to restore seagrass to support a range of ecosystems services.
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spelling doaj.art-1bb7fb0b75f2432dad37fc0a7375d4d62022-12-21T17:25:58ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-03-011210.3389/fpls.2021.629962629962Historical Analysis Exposes Catastrophic Seagrass Loss for the United KingdomAlix E. Green0Richard K. F. Unsworth1Richard K. F. Unsworth2Michael A. Chadwick3Peter J. S. Jones4Department of Geography, University College London (UCL), London, United KingdomSeagrass Ecosystem Research Group, Swansea University, Swansea, United KingdomProject Seagrass, Sustainable Places Research Institute, Cardiff, United KingdomDepartment of Geography, King’s College London, London, United KingdomDepartment of Geography, University College London (UCL), London, United KingdomThe spatial extent of seagrass is poorly mapped, and knowledge of historical loss is limited. Here, we collated empirical and qualitative data using systematic review methods to provide unique analysis on seagrass occurrence and loss in the United Kingdom. We document 8,493 ha of recently mapped seagrass in the United Kingdom since 1998. This equates to an estimated 0.9 Mt of carbon, which, in the current carbon market represents about £22 million. Using simple models to estimate seagrass declines triangulated against habitat suitability models, we provide evidence of catastrophic seagrass loss; at least 44% of United Kingdom’s seagrasses have been lost since 1936, 39% since the 1980’s. However, losses over longer time spans may be as high as 92%. Based on these estimates, historical seagrass meadows could have stored 11.5 Mt of carbon and supported approximately 400 million fish. Our results demonstrate the vast scale of losses and highlight the opportunities to restore seagrass to support a range of ecosystems services.https://www.frontiersin.org/articles/10.3389/fpls.2021.629962/fullblue carbonecosystem changehabitat lossintertidalhistoric changemarine
spellingShingle Alix E. Green
Richard K. F. Unsworth
Richard K. F. Unsworth
Michael A. Chadwick
Peter J. S. Jones
Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
Frontiers in Plant Science
blue carbon
ecosystem change
habitat loss
intertidal
historic change
marine
title Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
title_full Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
title_fullStr Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
title_full_unstemmed Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
title_short Historical Analysis Exposes Catastrophic Seagrass Loss for the United Kingdom
title_sort historical analysis exposes catastrophic seagrass loss for the united kingdom
topic blue carbon
ecosystem change
habitat loss
intertidal
historic change
marine
url https://www.frontiersin.org/articles/10.3389/fpls.2021.629962/full
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