Bacterioplankton abundance, biomass and production in a Brazilian coastal lagoon and in two German lakes
An. acad. bras. ciênc
;
73(1): 39-49, Mar. 2001. graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-281083
RESUMO
The bacterioplanktonic abundance, biomass, and production within a tropical lagoon (Cabiúnas, Brazil) and two temperate lakes (Stechlin and Dagow, Germany) were compared. Bacterial abundance and production were significantly different among the three water bodies. The lowest bacterial production ( 0.8mug C l-1 d-1) was observed in the tropical Cabiúnas Lagoon despite its higher mean temperature and dissolved organic carbon concentration. Highest bacterioplankton abundance ( 2.6 x 10(9) cells l-1) and production ( 68.5mug C l-1 d-1) were measured in eutrophic Lake Dagow. In oligotrophic Lake Stechlin, the lowest bacterial biomass ( 48.05mug C l-1) was observed because of lower bacterial biovolume ( 0.248mum³) and lower bacterial abundance. Bacterial populations in the temperate lakes show higher activity (production/biomass ratio) than in the tropical lagoon. The meaning of isotopic dilution and leucine incorporation by non-bacterial micro-organisms were evaluated in the oligotrophic temperate system. Leucine uptake by non-bacterial micro-organisms did not have significant influence on bacterial production
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Plâncton
/
Bactérias
/
Biomassa
/
Água Doce
País/Região como assunto:
América do Sul
/
Brasil
/
Europa
Idioma:
Inglês
Revista:
An. acad. bras. ciênc
Assunto da revista:
Ciência
Ano de publicação:
2001
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
Alemanha
Instituição/País de afiliação:
Institut für Gewässerökologie und Binnenfischerei/DE
/
Universidade Federal do Rio de Janeiro/BR
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