Articles | Volume 18, issue 13
Biogeosciences, 18, 4073–4090, 2021
Biogeosciences, 18, 4073–4090, 2021

Research article 07 Jul 2021

Research article | 07 Jul 2021

Atypical, high-diversity assemblages of foraminifera in a mangrove estuary in northern Brazil

Nisan Sariaslan and Martin R. Langer

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Cited articles

Alongi, D.: Mangrove forests: Resilience, protection from tsunamis, and responses to global climate change, Estuar. Coast. Shelf S., 76, 1–13,, 2008. 
Alongi, D., Wattayakorn, G., Boyle, S., Tirendi, F., Payn, C., and Dixon, P.: Influence of roots and climate on mineral and trace element storage and flux in tropical mangrove soils, Biogeochemistry, 69, 105–123,, 2004. 
Alves, F. C.: Análise morfoestrutural das bacias dos rios e Mamanguape (PB) com base em MDE-SRTM e imagem PALSAR/ALOS-1, MSc Diss., Inst. Nac. Pes. Esp., INPE, 5 151 pp., available at: (last access: 29 June 2021), 2015. 
Augustinus, P. G. E. F.: Geomorphology and Sedimentology of Mangroves: Geom. Sediment, Est., 53, 333–357, 1995. 
Barbosa, C. F., Scott D. B., Seoane J. C. S., and Turcq, B. J.: Foraminiferal zonations as base lines for Quaternary sea-level fluctuations in south-southeast Brazilian mangroves and marshes, J. Foramin Res., 35, 22–43, 2005. 
Short summary
Analyses of foraminiferal assemblages from the Mamanguape mangrove estuary (northern Brazil) revealed highly diverse, species-rich, and structurally complex biotas. The atypical fauna resembles shallow-water offshore assemblages and are interpreted to be the result of highly saline ocean waters penetrating deep into the estuary. The findings contrast with previous studies, have implications for the fossil record, and provide novel perspectives for reconstructing mangrove environments.
Final-revised paper