The blue carbon of southern southwest Atlantic salt marshes and their biotic and abiotic drivers.

Autor: Martinetto P; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina. pmartin@mdp.edu.ar., Alberti J; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina., Becherucci ME; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina., Cebrian J; Northern Gulf Institute, Mississippi State University, NOAA NCEI, 1021 Balch Blvd, Stennis Space Center, MS, 39529, USA.; 'Vesta, PBC', 584 Castro St, #2054, San Francisco, CA, 94114-2512, USA., Iribarne O; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina., Marbà N; Global Change Research Group, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avançats, Miquel Marquès 21, 07190, Esporles, Illes Balears, Spain., Montemayor D; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina., Sparks E; Coastal Research and Extension Center, Mississippi State University, 1815 Popp's Ferry Rd., Biloxi, MS, 39532, USA.; Mississippi-Alabama Sea Grant Consortium, 703 East Beach Drive, Ocean Springs, MS, 39564, USA., Ward R; School of Geography, Queen Mary University of London, Mile End Rd, Bethnal Green, London, E1 4NS, United Kingdom.; Institute of Agriculture and Environmental Sciences, Estonia University of Life Sciences, Kreutzwaldi 5, EE-51014, Tartu, Estonia.; Colégio de Estudos Avançados, Universidade Federal do Ceará, Campus do Pici, CEP 60455-760, Fortaleza, CE, Brasil.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Dec 22; Vol. 14 (1), pp. 8500. Date of Electronic Publication: 2023 Dec 22.
DOI: 10.1038/s41467-023-44196-w
Abstrakt: Coastal vegetated ecosystems are acknowledged for their capacity to sequester organic carbon (OC), known as blue C. Yet, blue C global accounting is incomplete, with major gaps in southern hemisphere data. It also shows a large variability suggesting that the interaction between environmental and biological drivers is important at the local scale. In southwest Atlantic salt marshes, to account for the space occupied by crab burrows, it is key to avoid overestimates. Here we found that southern southwest Atlantic salt marshes store on average 42.43 (SE = 27.56) Mg OC·ha -1 (40.74 (SE = 2.7) in belowground) and bury in average 47.62 g OC·m -2 ·yr -1 (ranging from 7.38 to 204.21). Accretion rates, granulometry, plant species and burrowing crabs were identified as the main factors in determining belowground OC stocks. These data lead to an updated global estimation for stocks in salt marshes of 185.89 Mg OC·ha -1 (n = 743; SE = 4.92) and a C burial rate of 199.61 g OC·m -2 ·yr -1 (n = 193; SE = 16.04), which are lower than previous estimates.
(© 2023. The Author(s).)
Databáze: MEDLINE
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