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Expanding Greenland seagrass meadows contribute new sediment carbon sinks
The loss of natural carbon sinks, such as seagrass meadows, contributes to grenhouse gas emissions and, thus, global warming. Whereas seagrass meadows are declining in temperate and tropical regions, they are expected to expand into the Arctic with future warming. Using paleoreconstruction of carbon...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6145939/ https://www.ncbi.nlm.nih.gov/pubmed/30232387 http://dx.doi.org/10.1038/s41598-018-32249-w |
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author | Marbà, Núria Krause-Jensen, Dorte Masqué, Pere Duarte, Carlos M. |
author_facet | Marbà, Núria Krause-Jensen, Dorte Masqué, Pere Duarte, Carlos M. |
author_sort | Marbà, Núria |
collection | PubMed |
description | The loss of natural carbon sinks, such as seagrass meadows, contributes to grenhouse gas emissions and, thus, global warming. Whereas seagrass meadows are declining in temperate and tropical regions, they are expected to expand into the Arctic with future warming. Using paleoreconstruction of carbon burial and sources of organic carbon to shallow coastal sediments of three Greenland seagrass (Zostera marina) meadows of contrasting density and age, we test the hypothesis that Arctic seagrass meadows are expanding along with the associated sediment carbon sinks. We show that sediments accreted before 1900 were highly (13)C depleted, indicative of low inputs of seagrass carbon, whereas from 1940’s to present carbon burial rates increased greatly and sediment carbon stocks were largely enriched with seagrass material. Currently, the increase of seagrass carbon inputs to sediments of lush and dense meadows (Kapisillit and Ameralik) was 2.6 fold larger than that of sparse meadows with low biomass (Kobbefjord). Our results demonstrate an increasing important role of Arctic seagrass meadows in supporting sediment carbon sinks, likely to be enhanced with future Arctic warming. |
format | Online Article Text |
id | pubmed-6145939 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61459392018-09-24 Expanding Greenland seagrass meadows contribute new sediment carbon sinks Marbà, Núria Krause-Jensen, Dorte Masqué, Pere Duarte, Carlos M. Sci Rep Article The loss of natural carbon sinks, such as seagrass meadows, contributes to grenhouse gas emissions and, thus, global warming. Whereas seagrass meadows are declining in temperate and tropical regions, they are expected to expand into the Arctic with future warming. Using paleoreconstruction of carbon burial and sources of organic carbon to shallow coastal sediments of three Greenland seagrass (Zostera marina) meadows of contrasting density and age, we test the hypothesis that Arctic seagrass meadows are expanding along with the associated sediment carbon sinks. We show that sediments accreted before 1900 were highly (13)C depleted, indicative of low inputs of seagrass carbon, whereas from 1940’s to present carbon burial rates increased greatly and sediment carbon stocks were largely enriched with seagrass material. Currently, the increase of seagrass carbon inputs to sediments of lush and dense meadows (Kapisillit and Ameralik) was 2.6 fold larger than that of sparse meadows with low biomass (Kobbefjord). Our results demonstrate an increasing important role of Arctic seagrass meadows in supporting sediment carbon sinks, likely to be enhanced with future Arctic warming. Nature Publishing Group UK 2018-09-19 /pmc/articles/PMC6145939/ /pubmed/30232387 http://dx.doi.org/10.1038/s41598-018-32249-w Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Marbà, Núria Krause-Jensen, Dorte Masqué, Pere Duarte, Carlos M. Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title | Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title_full | Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title_fullStr | Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title_full_unstemmed | Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title_short | Expanding Greenland seagrass meadows contribute new sediment carbon sinks |
title_sort | expanding greenland seagrass meadows contribute new sediment carbon sinks |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6145939/ https://www.ncbi.nlm.nih.gov/pubmed/30232387 http://dx.doi.org/10.1038/s41598-018-32249-w |
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