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Nordic Blue Carbon ...
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Krause-Jensen, DAarhus University, Denmark
(author)
Nordic Blue Carbon Ecosystems: Status and Outlook
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-05-31
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Frontiers Media SA,2022
Numbers
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LIBRIS-ID:oai:gup.ub.gu.se/316688
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https://gup.ub.gu.se/publication/316688URI
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https://doi.org/10.3389/fmars.2022.847544DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-49532URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-207358URI
Supplementary language notes
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Classification
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Subject category:ref swepub-contenttype
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Subject category:for swepub-publicationtype
Notes
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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 C-sequestration but underlines that increased coordination at national and Nordic scales and across sectors is needed. We propose a Nordic BC roadmap for science and management to maximize the potential of BC habitats to mitigate climate change and support coastal protection, biodiversity and additional ecosystem functions.
Subject headings and genre
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Gundersen, HNorwegian Institute for Water Research (NIVA), Norway
(author)
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Björk, Mats,1960-Stockholms universitet,Institutionen för ekologi, miljö och botanik(Swepub:su)mabjo
(author)
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Gullström, MartinSödertörns högskola,Miljövetenskap(Swepub:sh)magx20
(author)
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Dahl, MartinSödertörns högskola,Miljövetenskap(Swepub:sh)mada21
(author)
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Asplund, Maria. E.,1970Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Kristineberg,Department of Biological and Environmental Sciences, Kristineberg,University of Gothenburg, Sweden(Swepub:gu)xasmar
(author)
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Boström, CÅbo Akademi University, Finland
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Holmer, MUniversity of Southern Denmark, Denmark
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Banta, GTUniversity of Southern Denmark, Denmark
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Løvgren Graversen, AEAarhus University, Denmark
(author)
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Foldager Pedersen, MRoskilde University, Denmark
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Bekkby, TNorwegian Institute for Water Research (NIVA), Norway
(author)
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Frigstad, HNorwegian Institute for Water Research (NIVA), Norway
(author)
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Figenschau Skjellum, SNorwegian Institute for Water Research (NIVA), Norway
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Thormar, JInstitute of Marine Research, Norway
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Gyldenkærne, SAarhus University, Denmark
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Howard, JConservation International, Arlington, USA
(author)
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Pidgeon, EConservation International, Arlington, USA
(author)
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Björk Ragnarsdóttir, SIcelandic Institute of Natural History, Iceland
(author)
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Mols-Mortensen, ATARI Faroe Seaweed, Faroe Islands; Fiskaaling, Faroe Islands
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Hancke, KNorwegian Institute for Water Research (NIVA), Norway
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Aarhus University, DenmarkNorwegian Institute for Water Research (NIVA), Norway
(creator_code:org_t)
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In:Frontiers in Marine Science: Frontiers Media SA92296-7745
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Krause-Jensen, D
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Gundersen, H
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Björk, Mats, 196 ...
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Gullström, Marti ...
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Dahl, Martin
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Asplund, Maria. ...
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Boström, C
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Holmer, M
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Banta, GT
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Løvgren Graverse ...
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Foldager Pederse ...
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Bekkby, T
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Frigstad, H
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Figenschau Skjel ...
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Thormar, J
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Gyldenkærne, S
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Howard, J
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Pidgeon, E
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Björk Ragnarsdót ...
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Mols-Mortensen, ...
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Hancke, K
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