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Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Nature of POC transport in a mangrove ecosystem: A carbon stable isotopic study

1990; Elsevier BV; Volume: 30; Issue: 6 Linguagem: Inglês

10.1016/0272-7714(90)90099-d

ISSN

1096-0015

Autores

Carlos Eduardo de Rezende, Luiz Drude de Lacerda, A.R.C. Ovall, C.A.R. Silva, Luiz Antônio Martinelli,

Tópico(s)

Marine and coastal ecosystems

Resumo

The isotopic composition of particulate organic carbon (POC) was studied during five tidal cycles in a mangrove creek of Sepetiba Bay, Rio de Janeiro, Brazil. The results show that a mixture of organic carbon from mangrove and marine origins is always present in the creek. Mean mangrove contribution to the POC varied from 16% to 100% and was dependent on tidal amplitude. The results suggest that oceanic carbon can be an important component of carbon balance in mangrove ecosystems. Therefore, earlier carbon balance studies from mangroves which did not include measurements of carbon isotopic composition should be interpreted with care.

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