Data/hora: 07/06/2024 02:36:31

Provedor de dados: | 57
País: | Brazil
Título: | Dissolved inorganic carbon and metabolism of an eutrophic lacustrine system: variations from a 36-hours study
Autores: | PEDROSA,P.; REZENDE,C. E.
Data: | 2000-11-01
Ano: | 2000
Palavras-chave: | DIC; Carbon metabolism; Net primary productivity; Mineralization; Eutrophic lake.
Resumo: | Based on variations of pelagial dissolved inorganic carbon (DIC) concentrations this article provides estimations of net primary productivity and net mineralization -- net carbon metabolism -- in Cima Lake (Rio de Janeiro State). DIC concentrations varied from 203 to 773 µmol L-1 and %CO2(aq) (saturation) from 339 to 4,901. Net carbon metabolism per light/dark periods from the 36 hours of study ranged, respectively, from -556 to 503 mmol DIC m-2 12 h-1. Marked variations in daily net carbon metabolism of the lake were also observed. The values ranged from -25 to -194 mmol DIC m-2 day-1. The findings were discussed as indicators of dynamic biological behavior toward production or mineralization of organic matter in the system. And, the system seemed to shift from heterotrophy to autotrophy. Additionally, in the light of our results we emphasize the axial influence of both sampling strategy and treatment of scientific data for a characterization/interpretation of aquatic systems' metabolism.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400010
Editor: | Instituto Internacional de Ecologia
Relação: | 10.1590/S0034-71082000000400010
Formato: | text/html
Fonte: | Revista Brasileira de Biologia  v.60 n.4 2000
Fonte: | info:eu-repo/semantics/openAccess