Data/hora: 09/06/2024 13:35:47

Provedor de dados: | 5
País: | France
Título: | Microbial hydrogen production potential in shallow oceanic nepheloid layers.
Autores: | Schwarz, J; Loeblich, L; Schropp, S.
Data: | 1984-10
Ano: | 1984
Palavras-chave: | Suspended particulate matter; Sea water; Gases; Biogeochemistry; Biogenic material; Hydrogen; Anaerobic bacteria; Nepheloid layer; Fermentation.
Resumo: | Seawater samples taken from shallow suspended particle maxima (20-57m) at or near the base of the surface mixed layer in various oceanic areas were tested for their potential to produce hydrogen (H sub(2)) gas. Results suggest that hydrogen can be bacterially produced through a fermentative process in microanaerobic niches within particulate matter. The organisms responsible for this process are ubiquitous within the temperate and tropical waters sampled. Enumeration of potential H sub(2)-producing bacteria using fluorescent antibody techniques yielded a maximum at the base of the surface mixed layer, the same depth where the greatest H sub(2) gas production potential was observed. Hydrogen-producing bacteria comprised up to 15% of the total bacterial direct count (AODC). Findings indicate that bacteria associated with shallow nepheloid layers are capable of producing gas and thus contributing to the observed supersaturated gas concentration in the marine environment.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/1984/acte-962.pdf
Editor: | Actes de colloques. Ifremer Brest [ACTES COLLOQ. IFREMER.]. 1986
Relação: | http://archimer.ifremer.fr/doc/00000/962/
Formato: | application/pdf