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Influence of climatic conditions on cyanobacteria blooms in a tropical water supply river (Rio das Velhas, Brazil)

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conference contribution
posted on 2018-02-12, 15:09 authored by Eduardo von Sperling, Fernando A. Jardim
The paper presents a discussion about the striking influence of climatic conditions on the onset of cyanobacteria blooms in a warm water river in Brazil. An unusual drought period has been observed in the second half of 2007 in Rio das Velhas, Brazil, which led to an unexpected bloom of bluegreen algae (cyanobacteria). Cyanobacteria blooms constitute a special concern in Brazil, since the first human deaths caused worldwide by cyanotoxins have been reported in this country. The Brazilian legal framework restricts the water abstraction under such conditions and imposes a special monitoring programme to be carried out by water supply companies. The results of water quality analysis point out the conjunction of two factors as the main cause of the mentioned cyanobacteria blooms: nutrients input from treated and untreated sewage as well from diffuse sources and the extended dry period in 2007.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Water, Engineering and Development Centre (WEDC)

Published in

WEDC Conference

Citation

VON SPERLING, E. and JARDIM, F.A., 2009. Influence of climatic conditions on cyanobacteria blooms in a tropical water supply river (Rio das Velhas, Brazil). IN: Shaw, R.J. (ed). Water, sanitation and hygiene - Sustainable development and multisectoral approaches: Proceedings of the 34th WEDC International Conference, Addis Ababa, Ethiopia, 18-22 May 2009, 5p.p.

Publisher

© WEDC, Loughborough University

Version

  • VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

This is a conference paper.

Other identifier

WEDC_ID:12708

Language

  • en

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    WEDC 34th International Conference

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