<b>Cyanobacteria community in two tropical eutrophic reservoirs in northeastern Brazil

  • Fábio Henrique Portella Corrêa de Oliveira Companhia Pernambucana de Saneamento
  • Joanne D'Arc Bezerra da Silva Companhia Pernambucana de Saneamento
  • Anapaula Nunes Silvestre Fernandes Costa Companhia Pernambucana de Saneamento
  • Waldemir Pimentel Ramalho Companhia Pernambucana de Saneamento
  • César Henrique Pinto Moreira Universidade Federal Rural de Pernambuco
  • Tiago Luiz Santana Calazans Faculdade Frassinetti do Recife

Resumo

This study investigated the effect of seasonality on the Cyanobacteria community in two tropical eutrophic reservoirs in northeastern Brazil. Monthly samplings were conducted in the sub-surface of reservoirs. The following abiotic variables were analyzed: apparent color, turbidity, conductivity, alkalinity, calcium, magnesium, sodium, potassium, sulfate, total phosphorous, ammonia, nitrate, nitrite, chlorides, total hardness and chlorophyll-a, according to APHA (2012). Cyanobacteria density was quantified through biomass. Data were analyzed using one-way ANOVA and Redundancy Analysis (RDA). Higher mean values of Cyanobacteria biomass occurred in the dry (9.9mm3 L-1) and rainy (19.0mm3 L-1) season in Jucazinho and Carpina reservoirs, respectively, especially Planktothrix agardhii, Cylindrospermopsis raciborskii and Geiterinema amphibium, which occurred in 100% of the samples. RDA analysis revealed that the variables nitrite, ammonia, conductivity, calcium, sulfate, chlorides and alkalinity influenced most the Cyanobacteria community in both reservoirs. High trophic state index was observed throughout the year. Seasonality affected both biotic and abiotic variables.

 

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Publicado
2015-08-06
Como Citar
Oliveira, F. H. P. C. de, Silva, J. D. B. da, Costa, A. N. S. F., Ramalho, W. P., Moreira, C. H. P., & Calazans, T. L. S. (2015). <b&gt;Cyanobacteria community in two tropical eutrophic reservoirs in northeastern Brazil. Acta Scientiarum. Biological Sciences, 37(2), 169-176. https://doi.org/10.4025/actascibiolsci.v37i2.26418
Seção
Ecologia e Limnologia

 

0.6
2019CiteScore
 
 
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus