| Registro completo |
| Provedor de dados: |
Biological Sciences
|
| País: |
Brazil
|
| Título: |
Correlation between Escherichia coli and limnological variables in water samples of the Lagoa da Maraponga, Fortaleza, Ceará State, Brazil - doi: 10.4025/actascibiolsci.v33i2.7842
Correlation between Escherichia coli and limnological variables in water samples of the Lagoa da Maraponga, Fortaleza, Ceará State, Brazil - doi: 10.4025/actascibiolsci.v33i2.7842
|
| Autores: |
Pereira, Vitor Matheus Galdino; Universidade Federal do Ceará
Gomes, Raimundo Bemvindo; Centro Federal de Educação Tecnológica do Estado do Ceará - CEFETCE
Sá, Marcelo Vinícius do Carmo e; UFC
|
| Data: |
2011-05-17
|
| Ano: |
2011
|
| Palavras-chave: |
Ecologia de ecossistemas urbanos Eutrophication
Fecal coliforms
PH
Urban lakes Limnologia Eutrophication
Fecal coliforms
PH
Urban lakes
|
| Resumo: |
The present work examined possible relationship between the Escherichia coli counts and the concentrations of free CO2, dissolved oxygen, reactive phosphorus, total ammonia, nitrite, pH, transparency and electric conductivity in water samples from the Lagoa da Maraponga (Fortaleza, Ceará State). Eight samplings were carried out every fifteen days to take samples under the water’s surface at three sampling stations. Regression analyses were performed with the variable with the greatest Pearson coefficients searching for the best fitted curve to observed data. The correlation between the water pH and E. coli was best represented by the equation ŷ = 7.63 – 2.92 * 10-4 x (r² = 0.53; P = 0.06) where x is the E. coli count (MPN 100 mL-1) and y is the water pH. We concluded that the inflow of sewage and other affluent rich in organic matter decreases the lake's alkalinity and make it susceptible to the acidification process.
The present work examined possible relationship between the Escherichia coli counts and the concentrations of free CO2, dissolved oxygen, reactive phosphorus, total ammonia, nitrite, pH, transparency and electric conductivity in water samples from the Lagoa da Maraponga (Fortaleza, Ceará State). Eight samplings were carried out every fifteen days to take samples under the water’s surface at three sampling stations. Regression analyses were performed with the variable with the greatest Pearson coefficients searching for the best fitted curve to observed data. The correlation between the water pH and E. coli was best represented by the equation ŷ = 7.63 – 2.92 * 10-4 x (r² = 0.53; P = 0.06) where x is the E. coli count (MPN 100 mL-1) and y is the water pH. We concluded that the inflow of sewage and other affluent rich in organic matter decreases the lake's alkalinity and make it susceptible to the acidification process.
|
| Idioma: |
Português
|
| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7842
10.4025/actascibiolsci.v33i2.7842
|
| Editor: |
Universidade Estadual De Maringá
|
| Formato: |
application/pdf
application/pdf
|
| Fonte: |
Acta Scientiarum. Biological Sciences; v. 33, n. 2 (2011); 145-151
Acta Scientiarum. Biological Sciences; v. 33, n. 2 (2011); 145-151
|
| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Biological Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
|
|
