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Geomicrobiology of cores from Suruí Mangrove - Guanabara Bay - Brazil |
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| Authors: | Luiz Francisco Fontana João Graciano Mendonça Filho |
| Institution: | a Programa de Pós-Graduação em Geologia e Geofísica Marinha, Universidade Federal Fluminense, Av. General Milton de Tavares de Souza, s/n° - Campus da Praia Vermelha to Gragoatá, Niterói, RJ, CEP 24210-340, Brazil b Programa de Pós-Graduação em Geologia, Instituto de Geologia, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira, 274, Bloco J, sala JI20, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ, CEP 21949-900, Brazil c Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, Valonguinho, Centro - Niterói, RJ, CEP 24020-141, Brazil d Programa de Pós-Graduação em Biologia Marinha, Universidade Federal Fluminense, Caixa Postal: 100.644, Niterói, RJ, CEP 24001-970, Brazil |
| Abstract: | The aim of this work was to quantify the biopolymers associated to esterase enzymes and identify bacterial respiratory activity in four cores collected in Suruí Mangrove, Guanabara Bay - RJ. Biopolymer concentration was 1000 times lower than previously reported in the literature, indicating the need for creating and establishing eutrophication indicative rates and records compatible with tropical coastal systems. The biochemical representative relationships in the cores were equivalent to those from studies on coastal marine environments made in the Northern Hemisphere. The esterase enzymes in the sediment proved efficient in the mineralization of biopolymers, even with preferentially anaerobic metabolic physiology. Despite the lack of incipient geomicrobiological studies, the results highlighted the possible application of microbiology to a better understanding of geological processes. |
| Keywords: | Sediment Geomicrobiology Bacterial respiratory activity Biochemical composition Esterase enzymes |
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