Produção Nacional
Revisado por pares
Spatial Variation of Bacteria in Surface Waters of Paranaguá and Antonina Bays, Paraná, Brazil
2002; Instituto de Tecnologia do Paraná (Tecpar); Volume: 45; Issue: 1 Linguagem: Inglês
10.1590/s1516-89132002000100005
ISSN1678-4324
AutoresHedda Elisabeth Kolm, Maria Fernanda Schoenenberger, Mariana da Rocha Piemonte, Patrícia Savio de Araújo-Souza, Guilherme Schnell e Scühli, Mariele B. Mucciatto, Roseli Mazzuco,
Tópico(s)Microbial Community Ecology and Physiology
ResumoSpatial variability in the concentration of total bacteria, saprophytes and coliforms abundance was investigated in surface waters of Paranaguá and Antonina Bays. Six points along a profile from the entrance of Paranaguá Bay to the innermost part of Antonina Bay, were sampled on February 26, 1997. Temperature, salinity, dissolved oxygen, pH, particulate organic carbon, water transparency and seston were also measured. Determination of total bacterial abundance and biomass were made with the epifluorescent method. Saprophytic bacteria counts were conducted with ZoBell 2216E culture medium with fresh and 32‰ water and the coliform MPN was enumerated with the chromogenic substrate method. Principal component analysis of biotic and abiotic data showed a gradient from the innermost bay to the baymouth bar with an increase in total and halophobic aerobic cultivated bacteria concentration at Antonina Bay. Greatest values of halophilic aerobic cultivated bacteria were found at the bay’s middle part. The greatest fecal coliform number was observed near Paranaguá City. We concluded that regarding bacterial spatial distribution the outer region of the estuary was highly influenced by the adjacent ocean and that the inner part had typical estuarine characteristics.
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