Ecosystem carbon losses following a climate-induced mangrove mortality in Brazil.

Autor: Gomes LEO; Grupo de Ecologia Bêntica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES, 29075-910, Brazil. Electronic address: luiz.e.o.gomes@gmail.com., Sanders CJ; National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 4321, Coffs Harbour, 2450, New South Wales, Australia., Nobrega GN; Programa de Pós-Graduação em Geociências (Geoquímica), Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, RJ, Brazil., Vescovi LC; Grupo de Ecologia Bêntica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES, 29075-910, Brazil., Queiroz HM; Soil Science Department, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil., Kauffman JB; Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, 97331, USA., Ferreira TO; Soil Science Department, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil., Bernardino AF; Grupo de Ecologia Bêntica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES, 29075-910, Brazil. Electronic address: angelo.bernardino@ufes.br.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2021 Nov 01; Vol. 297, pp. 113381. Date of Electronic Publication: 2021 Jul 26.
DOI: 10.1016/j.jenvman.2021.113381
Abstrakt: Drought events may induce mangrove mortality and dieback events worldwide as a result of climate extremes. As mangroves sequester large quantities of carbon, quantifying the losses of these stocks following climate disturbances may guide wetland governance strategies globally. In Southeast Brazil, we determined the total ecosystem carbon stocks (TECS) of pristine mangroves that were up to 1851 Mg of carbon per hectare (Mg C ha -1 ), which are the highest stocks measured from South American and raising estimates of Brazil's mangrove TECS to 0.52 Pg C. A mangrove mortality event in the same estuary resulted in a 14.6 % decrease in TECS (270.5 Mg C ha -1 ) and loss of 20 % of mangrove soil carbon within less than 2-years. Carbon dioxide emissions from this impact were 992.8 Mg CO 2 e ha -1 , which are slightly lower than emissions from land use disturbances on mangroves worldwide. Our results suggest that climate effects on mangroves can become significant sources of greenhouse gases globally.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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