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Previous issue date: 2009-04-24 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / 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 ?gC.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 / Foram estudadas a densidade e a biomassa do bacteriopl?ncton nos per?odos seco
e chuvoso em dois pontos do A?ude Marechal Dutra. As m?dias das densidades bacterianas
totais oscilaram na ordem de 107 organismos por mL de amostra. As c?lulas em forma de
cocos foram numericamente predominantes, influenciando consideravelmente a abund?ncia
total do bacteriopl?ncton. A biomassa bacteriana total foi considerada elevada, variando de
2.431,82 a 2.739,01 ?gC.L-1 , em fun??o dos altos valores de biovolume dos filamentos. N?o
foram encontradas varia??es espaciais nem sazonais marcantes. Os altos valores de densidade
e biomassa encontrados alertam para a necessidade de um freq?ente monitoramento dos
ecossistemas aqu?ticos de regi?o semi-?rida onde a qualidade da ?gua ? afetada pela
ocorr?ncia de extensos per?odos de estiagem que influenciam a qualidade de vida de sua
popula??o
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/18209 |
| Date | 24 April 2009 |
| Creators | Petrovich, Ana Carla Iorio |
| Contributors | CPF:51274957400, http://lattes.cnpq.br/4511989641459455, Tabosa, Wyllys Abel Farkatt, CPF:39377520487, http://lattes.cnpq.br/3596040894249041, Lima, Raquel Franco de Souza, CPF:24043427204, http://lattes.cnpq.br/5181465668193577, Ara?jo, Magn?lia Fernandes Flor?ncio de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa Regional de P?s-Gradua??o em Desenvolvimento e Meio Ambiente PRODEMA, UFRN, BR, Meio Ambiente, Cultura e Desenvolvimento |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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