A comparison of hydrogen sulfide, hydrogen and methane production and consumption in different aquatic ecosystems

Zaiss, Ulrich

doi:10.1080/05384680.1996.11904067

Cited by 2 publications

(3 citation statements)

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“…Marinho et al (2012) also investigated the CH 4 production rate in mangroves, and their results were similar to what we found in some coastal lagoons. Zaiss (1996) found 87 nmol g -1 day -1 in a freshwater lagoon. However, the greatest PMP rate of a freshwater lagoon (Cabiúnas) in our study was only 3.36 nmol g -1 day -1 .…”

Section: 22differences Between the Limnetic And Littoral Region (mentioning

confidence: 94%

“…Studies of the dynamics of CH 4 production and concentration in the sediments of aquatic coastal environments have become more important as the concentration of this greenhouse gas has increased in the atmosphere throughout the years (Zaiss, 1996;Furtado et al, 2002;Fonseca et al, 2004). In general, the wetlands are considered the main natural source of the atmospheric CH 4 (Wuebbles and Hayhoe, 2002) that currently contributes approximately 20% to the global warming effect (Neue et al, 1997).…”

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confidence: 99%

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Magnitude and variability of methane production and concentration in tropical coastal lagoons sediments

et al. 2013

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Aim: Coastal wetlands are potential zones for methane (CH 4 ) production. The present study aims to evaluate the spatial variation of CH 4 production and concentration in ten tropical coastal lagoons, the influence of aquatic macrophytes on the sediment CH 4 concentration and how the magnitude of these potential CH 4 production rates compare to those in other ecosystems. Methods: Sediments were sampled in ten coastal lagoons, with one site in the limnetic region and another site in aquatic macrophyte stands when they were present in the littoral region. We measured the CH 4 production as a potential rate, and CH 4 concentration was directly measured from sediment samples. Results: The highest potential CH 4 production (PMP) rates were found in alkaline and hypersaline lagoons. However, Cabiúnas, which is a freshwater lagoon densely colonized by aquatic macrophytes, also exhibited a high PMP rate. We also observed that the sediment CH 4 concentration in the littoral region was higher than in the limnetic region in all of the investigated lagoons except Paulista, which presented the opposite pattern. The PMP rates observed in the studied lagoons were low compared to other aquatic ecosystems. Conclusion: Our results suggest that the sediments of saline lagoons are important CH 4 production sites, and in general, aquatic macrophytes have a positive influence on methanogenesis, which was evident based on the CH 4 concentrations present in the sediments of these lagoons. Further studies should focus on the processes underlying the CH 4 patterns observed in the tropical coastal lagoons, especially concerning the coupling between CH 4 production and concentration.Resumo: Objetivo: Áreas alagadas costeiras são zonas potenciais para produção de metano (CH 4 ). O presente estudo tem como objetivo avaliar a variação espacial da produção e concentração de CH 4 em dez lagoas costeiras tropicais, a influência de macrófitas aquáticas na concentração de CH 4 no sedimento e como a magnitude dessas taxas de produção potencial de CH 4 é em comparação com outros ecossistemas. Métodos: Os sedimentos foram amostrados em dez lagoas costeiras, com um ponto na região limnética e outro ponto nos bancos de macrófita aquática, quando estas estavam presentes na região litorânea. Nós medimos a produção de CH 4 como uma taxa potencial e a concentração de CH 4 foi diretamente medida das amostras de sedimento. Resultados: As maiores taxas de produção potencial de CH 4 (PPM) foram encontradas em lagoas alcalinas e hipersalinas. Contudo, Cabiúnas, que é uma lagoa de água doce densamente colonizada por macrófitas aquáticas também exibiu alta taxa de PPM. Nós também observamos que a concentração de CH 4 do sedimento na região litorânea foi mais alta que na região limnética em todas as lagoas investigadas, exceto Paulista, que apresentou o padrão oposto. As taxas de produção de CH 4 observadas nessas lagoas estudadas foram baixas comparadas com outros ecossistemas aquáticos. Conclusão: Nossos resultados sugerem que os sedimentos de lagoas salinas são...

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Section: 22differences Between the Limnetic And Littoral Region (mentioning

confidence: 94%

mentioning

confidence: 99%

Magnitude and variability of methane production and concentration in tropical coastal lagoons sediments

et al. 2013

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“…Even in the lagoons with typical freshwater conditions as Cabiúnas and Comprida lagoons, which were characterized by high organic matter content in the sediments (Table 4). Zaiss (1996) found a high methanogenic activity for water bodies as streams, rivers and lakes that presented high organic matter, excepting salt marsh sediments. Only in the Imboacica lagoon high values of conductivity and salinity ( Table 1) were observed.…”

Section: Discussionmentioning

confidence: 99%

Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil)

Furtado

Casper

Esteves

2002

Braz. arch. biol. technol.

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A comparison of hydrogen sulfide, hydrogen and methane production and consumption in different aquatic ecosystems

Cited by 2 publications

References 25 publications

Magnitude and variability of methane production and concentration in tropical coastal lagoons sediments

Magnitude and variability of methane production and concentration in tropical coastal lagoons sediments

Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil)

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