Nordic Blue Carbon Ecosystems: Status and Outlook
Vegetated coastal and marine habitats in the Nordic region include salt marshes, eelgrass meadows and, in particular, brown macroalgae (kelp forests and rockweed beds). Such habitats contribute to storage of organic carbon (Blue Carbon – BC) and support coastal protection, biodiversity and water qua...
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Online Access: | https://hdl.handle.net/11250/3004539 https://doi.org/10.3389/fmars.2022.847544 |
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ftimr:oai:imr.brage.unit.no:11250/3004539 2023-05-15T16:28:41+02:00 Nordic Blue Carbon Ecosystems: Status and Outlook Krause-Jensen, Dorte Gundersen, Hege Björk, Mats Gullström, Martin Dahl, Martin Asplund, Maria E. Boström, Christoffer Holmer, Marianne Banta, Gary T. Graversen, Anna Elizabeth Løvgren Pedersen, Morten Foldager Bekkby, Trine Frigstad, Helene Skjellum, Solrun Figenschau Thormar, Jonas Gyldenkærne, Steen Howard, Jennifer Pidgeon, Emily Ragnarsdóttir, Sunna Björk Mols-Mortensen, Agnes Hancke, Kasper 2022 application/pdf https://hdl.handle.net/11250/3004539 https://doi.org/10.3389/fmars.2022.847544 eng eng Norges forskningsråd: 160016 Frontiers in Marine Science. 2022, 9 . urn:issn:2296-7745 https://hdl.handle.net/11250/3004539 https://doi.org/10.3389/fmars.2022.847544 cristin:2030125 24 9 Frontiers in Marine Science Peer reviewed Journal article 2022 ftimr https://doi.org/10.3389/fmars.2022.847544 2022-07-13T22:40:32Z Vegetated coastal and marine habitats in the Nordic region include salt marshes, eelgrass meadows and, in particular, brown macroalgae (kelp forests and rockweed beds). Such habitats contribute to storage of organic carbon (Blue Carbon – BC) and support coastal protection, biodiversity and water quality. Protection and restoration of these habitats therefore have the potential to deliver climate change mitigation and co-benefits. Here we present the existing knowledge on Nordic BC habitats in terms of habitat area, C-stocks and sequestration rates, co-benefits, policies and management status to inspire a coherent Nordic BC roadmap. The area extent of BC habitats in the region is incompletely assessed, but available information sums up to 1,440 km2 salt marshes, 1,861 (potentially 2,735) km2 seagrass meadows, and 16,532 km2 (potentially 130,735 km2, including coarse Greenland estimates) brown macroalgae, yielding a total of 19,833 (potentially 134,910) km2. Saltmarshes and seagrass meadows have experienced major declines over the past century, while macroalgal trends are more diverse. Based on limited salt marsh data, sediment C-stocks average 3,311 g Corg m-2 (top 40-100 cm) and sequestration rates average 142 g Corg m-2 yr-1. Eelgrass C-stocks average 2,414 g Corg m-2 (top 25 cm) and initial data for sequestration rates range 5-33 g Corg m-2, quantified for one Greenland site and one short term restoration. For Nordic brown macroalgae, peer-reviewed estimates of sediment C-stock and sequestration are lacking. Overall, the review reveals substantial Nordic BC-stocks, but highlights that evidence is still insufficient to provide a robust estimate of all Nordic BC-stocks and sequestration rates. Needed are better quantification of habitat area, C-stocks and fluxes, particularly for macroalgae, as well as identification of target areas for BC management. The review also points to directives and regulations protecting Nordic marine vegetation, and local restoration initiatives with potential to increase ... Article in Journal/Newspaper Greenland Institute for Marine Research: Brage IMR Greenland Frontiers in Marine Science 9 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Vegetated coastal and marine habitats in the Nordic region include salt marshes, eelgrass meadows and, in particular, brown macroalgae (kelp forests and rockweed beds). Such habitats contribute to storage of organic carbon (Blue Carbon – BC) and support coastal protection, biodiversity and water quality. Protection and restoration of these habitats therefore have the potential to deliver climate change mitigation and co-benefits. Here we present the existing knowledge on Nordic BC habitats in terms of habitat area, C-stocks and sequestration rates, co-benefits, policies and management status to inspire a coherent Nordic BC roadmap. The area extent of BC habitats in the region is incompletely assessed, but available information sums up to 1,440 km2 salt marshes, 1,861 (potentially 2,735) km2 seagrass meadows, and 16,532 km2 (potentially 130,735 km2, including coarse Greenland estimates) brown macroalgae, yielding a total of 19,833 (potentially 134,910) km2. Saltmarshes and seagrass meadows have experienced major declines over the past century, while macroalgal trends are more diverse. Based on limited salt marsh data, sediment C-stocks average 3,311 g Corg m-2 (top 40-100 cm) and sequestration rates average 142 g Corg m-2 yr-1. Eelgrass C-stocks average 2,414 g Corg m-2 (top 25 cm) and initial data for sequestration rates range 5-33 g Corg m-2, quantified for one Greenland site and one short term restoration. For Nordic brown macroalgae, peer-reviewed estimates of sediment C-stock and sequestration are lacking. Overall, the review reveals substantial Nordic BC-stocks, but highlights that evidence is still insufficient to provide a robust estimate of all Nordic BC-stocks and sequestration rates. Needed are better quantification of habitat area, C-stocks and fluxes, particularly for macroalgae, as well as identification of target areas for BC management. The review also points to directives and regulations protecting Nordic marine vegetation, and local restoration initiatives with potential to increase ... |
format |
Article in Journal/Newspaper |
author |
Krause-Jensen, Dorte Gundersen, Hege Björk, Mats Gullström, Martin Dahl, Martin Asplund, Maria E. Boström, Christoffer Holmer, Marianne Banta, Gary T. Graversen, Anna Elizabeth Løvgren Pedersen, Morten Foldager Bekkby, Trine Frigstad, Helene Skjellum, Solrun Figenschau Thormar, Jonas Gyldenkærne, Steen Howard, Jennifer Pidgeon, Emily Ragnarsdóttir, Sunna Björk Mols-Mortensen, Agnes Hancke, Kasper |
spellingShingle |
Krause-Jensen, Dorte Gundersen, Hege Björk, Mats Gullström, Martin Dahl, Martin Asplund, Maria E. Boström, Christoffer Holmer, Marianne Banta, Gary T. Graversen, Anna Elizabeth Løvgren Pedersen, Morten Foldager Bekkby, Trine Frigstad, Helene Skjellum, Solrun Figenschau Thormar, Jonas Gyldenkærne, Steen Howard, Jennifer Pidgeon, Emily Ragnarsdóttir, Sunna Björk Mols-Mortensen, Agnes Hancke, Kasper Nordic Blue Carbon Ecosystems: Status and Outlook |
author_facet |
Krause-Jensen, Dorte Gundersen, Hege Björk, Mats Gullström, Martin Dahl, Martin Asplund, Maria E. Boström, Christoffer Holmer, Marianne Banta, Gary T. Graversen, Anna Elizabeth Løvgren Pedersen, Morten Foldager Bekkby, Trine Frigstad, Helene Skjellum, Solrun Figenschau Thormar, Jonas Gyldenkærne, Steen Howard, Jennifer Pidgeon, Emily Ragnarsdóttir, Sunna Björk Mols-Mortensen, Agnes Hancke, Kasper |
author_sort |
Krause-Jensen, Dorte |
title |
Nordic Blue Carbon Ecosystems: Status and Outlook |
title_short |
Nordic Blue Carbon Ecosystems: Status and Outlook |
title_full |
Nordic Blue Carbon Ecosystems: Status and Outlook |
title_fullStr |
Nordic Blue Carbon Ecosystems: Status and Outlook |
title_full_unstemmed |
Nordic Blue Carbon Ecosystems: Status and Outlook |
title_sort |
nordic blue carbon ecosystems: status and outlook |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3004539 https://doi.org/10.3389/fmars.2022.847544 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
24 9 Frontiers in Marine Science |
op_relation |
Norges forskningsråd: 160016 Frontiers in Marine Science. 2022, 9 . urn:issn:2296-7745 https://hdl.handle.net/11250/3004539 https://doi.org/10.3389/fmars.2022.847544 cristin:2030125 |
op_doi |
https://doi.org/10.3389/fmars.2022.847544 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1766018352259530752 |