Data/hora: 07/06/2024 08:06:07

Provedor de dados: | 58
País: | Brazil
Título: | Bacterioplancton in different tides of the Perequê tidal creek, Pontal do Sul, Paraná, Brazil
Autores: | Kolm,Hedda Elisabeth; Andretta,Lucimar.
Data: | 2003-06-01
Ano: | 2003
Palavras-chave: | Bacteria; Tide; Tidal creek; Perequê; Paraná State.
Resumo: | The influence of tidal phase on bacteria abundance in surface waters was studied in five stations along the Perequê tidal creek (Paraná State, Brazil), at spring and neap low and high tides in July 1999. The stations were located from the mouth (St.1) to the creek's head (St. 5). The following parameters were analyzed: salinity, temperature, pH, dissolved oxygen, total carbon dioxide, seston, particulate organic matter, pluviosity, chlorophyll "a", total heterotrophic bacteria, bacterial biomass, cultivable heterotrophic aerobic halophilic and halophobic bacteria, total coliforms and Escherichia coli. The results showed that the highest values of salinity, pH and dissolved oxygen at stations 1 to 4 were registered during the spring high tide. The amount of total heterotrophic bacteria was directly proportional to seston and chlorophyl values at stations 2 and 3 during low tide of July 28, and at station 5 during high tide of the same day. The values of cultivable heterotrophic aerobic halophilic and halophobic bacteria, total coliforms and E. coli, were directly correlated with particulate organic matter and pluviosity. The largest of these values were registered during the neap low tide of July 6. This period was characterized by high precipitation, which may have influenced the bacterial number variation. During the neap high tide and, sporadically, during the neap and spring low tide, the lowest values of total heterotrophic bacteria and bacterial biomass were registered. The results showed great influence of the tide on the bacteria at stations 1 to 4, but not at station 5.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200002
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822003000200002
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.34 n.2 2003
Fonte: | info:eu-repo/semantics/openAccess