Forensic carbon accounting: Assessing the role of seaweeds for carbon sequestration.

Autor: Hurd CL; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia., Law CS; National Institute of Water and Atmospheric Research, Wellington, 6021, New Zealand.; Department of Marine Science, University of Otago, Dunedin, 9016, New Zealand., Bach LT; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia., Britton D; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia., Hovenden M; Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania, 7001, Australia., Paine ER; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia., Raven JA; Division of Plant Sciences, University of Dundee at the James Hutton Institute, Dundee, DD2 5DA, UK.; Climate Change Cluster, University of Technology, Sydney, Ultimo, New South Wales, 2006, Australia.; School of Biological Science, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia., Tamsitt V; University of South Florida College of Marine Science, 830 1st St S, St Petersburg, Florida, 33701, USA.; Climate Change Research Centre, University of New South Wales, Sydney, New South Wales, 2052, Australia., Boyd PW; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia.
Jazyk: angličtina
Zdroj: Journal of phycology [J Phycol] 2022 Jun; Vol. 58 (3), pp. 347-363. Date of Electronic Publication: 2022 Apr 24.
DOI: 10.1111/jpy.13249
Abstrakt: Carbon sequestration is defined as the secure storage of carbon-containing molecules for >100 years, and in the context of carbon dioxide removal for climate mitigation, the origin of this CO 2 is from the atmosphere. On land, trees globally sequester substantial amounts of carbon in woody biomass, and an analogous role for seaweeds in ocean carbon sequestration has been suggested. The purposeful expansion of natural seaweed beds and aquaculture systems, including into the open ocean (ocean afforestation), has been proposed as a method of increasing carbon sequestration and use in carbon trading and offset schemes. However, to verify whether CO 2 fixed by seaweeds through photosynthesis leads to carbon sequestration is extremely complex in the marine environment compared to terrestrial systems, because of the need to jointly consider: the comparatively rapid turnover of seaweed biomass, tracing the fate of carbon via particulate and dissolved organic carbon pathways in dynamic coastal waters, and the key role of atmosphere-ocean CO 2 exchange. We propose a Forensic Carbon Accounting approach, in which a thorough analysis of carbon flows between the atmosphere and ocean, and into and out of seaweeds would be undertaken, for assessing the magnitude of CO 2 removal and robust attribution of carbon sequestration to seaweeds.
(© 2022 Phycological Society of America.)
Databáze: MEDLINE
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