masterThesis
Usos e qualidade da água em região semi-árida do nordeste brasileiro: percepção ambiental de professores e alunos
Fecha
2009-04-24Registro en:
PETROVICH, Ana Carla Iorio. Usos e qualidade da água em região semi-árida
do nordeste brasileiro: percepção
ambiental de professores e alunos. 2009. 90 f. Dissertação (Mestrado em Meio Ambiente, Cultura e Desenvolvimento) - Universidade Federal do Rio Grande do Norte, Natal, 2009.
Autor
Petrovich, Ana Carla Iorio
Resumen
Density and biomass of bacterioplankton in parts of the Marechal Dutra
reservoir were studied in periods of dry and rainy season. The averages of the total bacterial
densities oscillated in the order of 107 organisms/ mL of sample. The cocci cells were
numerically predominant, influencing considerably the total abundance of the
bacterioplankton. The total bacterial biomass, was considered raised and varied from 2.431,82
to 2.739,01 μgC.L-1, in function of the high values of biovolume of the filaments forms, and
showed no marked spacial fluctuation. These high values of density and biomass alert for the
necessity of a frequent monitoring of aquatic ecosystems of semi-arid region, where the
quality of the water is affected by the occurrence of extensive dry periods, influencing
considerably the quality of life of its population