AN ANALYSIS OF SEASONALITY OF SURFACE FLOWS OF ENERGY AND CARBON IN A ECOSYSTEM OF NATIVE FIELDS INSERTED IN PAMPA BIOMA

Ciência E Natura

Endereço:
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ISSN: 2179-460X
Editor Chefe: Marcelo Barcellos da Rosa
Início Publicação: 30/11/1979
Periodicidade: Quadrimestral

AN ANALYSIS OF SEASONALITY OF SURFACE FLOWS OF ENERGY AND CARBON IN A ECOSYSTEM OF NATIVE FIELDS INSERTED IN PAMPA BIOMA

Ano: 2018 | Volume: 40 | Número: Especial
Autores: Ricardo Acosta, Debora Regina Roberti, Gisele Cristina Dotto Rubert, Marcelo Bortoluzzi Diaz, Iván Cely, Osvaldo Moraes
Autor Correspondente: Ricardo Acosta | [email protected]

Palavras-chave: flow of energy, co2 flow, pampa biome

Resumos Cadastrados

Resumo Inglês:

In this work, the turbulent covariance technique was used to estimate the surface fluxes of carbon (CO 2 ) and energy, latent (LE) and sensitive (H), over a native field ecosystem (pasture). The results show that the ecosystem in question presents a predominant seasonality in its ecological nctioning, especially regarding the observations of the flow of LE and CO 2 , with carbon assimilation and evapotranspiration with maximum values ​​during the summer. During the winter season, observations point to a lower metabolic state of the ecosystem, with almost zero carbon assimilation (even a carbon source signal inversion) and the evapotranspiration rate falling to 60% of its value in the state of higher metabolic activity