Articles | Volume 18, issue 8
https://doi.org/10.5194/bg-18-2527-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-2527-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Apr 2021
Research article |
| 22 Apr 2021
| 22 Apr 2021
Hypersaline tidal flats as important “blue carbon” systems: a case study from three ecosystems
Dylan R. Brown
CORRESPONDING AUTHOR
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
Humberto Marotta
Ecosystems and Global Change Laboratory (LEMG-UFF), International Laboratory of Global Change (LINCGlobal), Biomass and Water Management Research Center (NAB), Universidade Federal Fluminense, Av. Edmundo March, s/n extdegree, Niterói, RJ, 24210-310, Brazil
Graduate Program in Geosciences (Environmental Geochemistry), Department of Geochemistry, Universidade Federal Fluminense, Niterói, RJ, 24020-141, Brazil
Physical Geography Laboratory (LAGEF-UFF), Department of Geography, Graduate Program in Geography, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/no., Niterói, RJ, 24210-346, Brazil
Roberta B. Peixoto
Ecosystems and Global Change Laboratory (LEMG-UFF), International Laboratory of Global Change (LINCGlobal), Biomass and Water Management Research Center (NAB), Universidade Federal Fluminense, Av. Edmundo March, s/n extdegree, Niterói, RJ, 24210-310, Brazil
Graduate Program in Geosciences (Environmental Geochemistry), Department of Geochemistry, Universidade Federal Fluminense, Niterói, RJ, 24020-141, Brazil
Alex Enrich-Prast
Ecosystems and Global Change Laboratory (LEMG-UFF), International Laboratory of Global Change (LINCGlobal), Biomass and Water Management Research Center (NAB), Universidade Federal Fluminense, Av. Edmundo March, s/n extdegree, Niterói, RJ, 24210-310, Brazil
Department of Thematic Studies – Environmental Change, Linköping University, 581 83, Linköping, Sweden
Department of Botany, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil
Glenda C. Barroso
Graduate Program in Geosciences (Environmental Geochemistry), Department of Geochemistry, Universidade Federal Fluminense, Niterói, RJ, 24020-141, Brazil
Mario L. G. Soares
Laboratory For Mangrove Studies (NEMA-UERJ), International Laboratory of Global Change (LINCGlobal) and Interdisciplinary Observatory on Climate Change (OIMC-UERJ), Department of Biological Oceanography, Faculty of Oceanography, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, sala 4019-E, Rio de Janeiro, RJ, 20550-900, Brazil
Wilson Machado
Graduate Program in Geosciences (Environmental Geochemistry), Department of Geochemistry, Universidade Federal Fluminense, Niterói, RJ, 24020-141, Brazil
Alexander Pérez
Graduate Program in Geosciences (Environmental Geochemistry), Department of Geochemistry, Universidade Federal Fluminense, Niterói, RJ, 24020-141, Brazil
Laboratorio de Biogeociencias, Laboratorios de Investigación y Desarrollo (LID), Facultad de Ciencias y Filosofía, Centro de Investigación para el Desarrollo Integral y Sostenible (CIDIS), Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, Urb. Ingeniería, Lima, Peru.
Joseph M. Smoak
School of Geosciences, University of South Florida, St. Petersburg, FL 33701, USA
Luciana M. Sanders
Southern Cross GeoScience, Southern Cross University, P.O. Box 157, Lismore, NSW, 2480, Australia
Stephen Conrad
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
James Z. Sippo
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
Southern Cross GeoScience, Southern Cross University, P.O. Box 157, Lismore, NSW, 2480, Australia
School of Environment, Science and Engineering, Southern Cross University, P.O. Box 157, Lismore, NSW, 2480, Australia
Isaac R. Santos
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
Damien T. Maher
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
Southern Cross GeoScience, Southern Cross University, P.O. Box 157, Lismore, NSW, 2480, Australia
School of Environment, Science and Engineering, Southern Cross University, P.O. Box 157, Lismore, NSW, 2480, Australia
Christian J. Sanders
National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 4321, Coffs Harbour, NSW, 2450, Australia
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 201100, P.R. China
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Latest update: 06 Dec 2025
Short summary
Hypersaline tidal flats (HTFs) are coastal ecosystems with freshwater deficits often occurring in arid or semi-arid regions near mangrove supratidal zones with no major fluvial contributions. This study shows that HTFs are important carbon and nutrient sinks which may be significant given their extensive coverage. Our findings highlight a previously unquantified carbon as well as a nutrient sink and suggest that coastal HTF ecosystems could be included in the emerging blue carbon framework.
Hypersaline tidal flats (HTFs) are coastal ecosystems with freshwater deficits often occurring...
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