Conclusão

Este estudo demonstrou que:

- O movimento das marés não influenciou o fluxo de CO2 e CH4 no solo nas duas

topografias e nas duas estações. Portanto, é possível comparar o influxo dos dois gases estudados quando amostrados em diferentes momentos do dia.

- A topografia é uma variação ambiental importante para o fluxo de gás nos manguezais. O CH4 atmosférico foi consumido e a produção de CO2 foi menor durante o

período seco nas altas topografias. Assim, o fluxo dos dois gases nas duas topografias deve ser analisado para tornar o estudo mais preciso.

- C e N orgânicos totais foram fundamentais para o fluxo de CO2, mas não

influenciaram o fluxo de CH4.

- Um maior fluxo de CO2 foi registrado no período seco e o CH4 não mostrou diferenças

- Não foi encontrada correlação entre os fatores microclimáticos e o fluxo de gás nas duas estações.

Agradecimentos

Ao Programa de alianças para Educação e a Capacitação da Organização dos Estados Americanos e o Grupo Coimbra de Universidades Brasileiras (PAEC-OEA-GCUB). À Universidade Federal do Pará, Programa de Pós-Graduação em Ciências Ambientais (UFPA-PPGCA). Museu Paraense Emílio Goeldi (MPEG) pela oportunidade de viabilizar este trabalho. Ao técnico em laboratório Paulo Sarmento, ao motorista Lucivaldo da Silva e a MSc. Maridalva Ribeiro pela colaboração nos trabalhos de campo.

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