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- Title
Occurrence of Toxic Cyanobacterial Blooms in Rio de la Plata Estuary, Argentina: Field Study and Data Analysis.
- Authors
Giannuzzi, L.; Carvajal, G.; Corradini, M. G.; Araujo Andrade, C.; Echenique, R.; Andrinolo, D.
- Abstract
Water samples were collected during 3 years (2004-2007) at three sampling sites in the Rio de la Plata estuary. Thirteen biological, physical, and chemical parameters were determined on the water samples. The presence of microcystin-LR in the reservoir samples, and also in domestic water samples, was confirmed and quantified. Microcystin-LR concentration ranged between 0.02 and 8.6 μg.L-1. Principal components analysis was used to identify the factors promoting cyanobacteria growth. The proliferation of cyanobacteria was accompanied by the presence of high total and fecal coliforms bacteria (>1500 MNP/100 mL), temperature ⩾25°C, and total phosphorus content ⩾1.24 mg.L-1. The observed fluctuating patterns of Microcystis aeruginosa, total coliforms, and Microcystin-LR were also described by probabilistic models based on the log-normal and extreme value distributions. The sampling sites were compared in terms of the distribution parameters and the probability of observing high concentrations for Microcystis aeruginosa, total coliforms, and microcystin-LR concentration.
- Subjects
RIO de la Plata Watershed; ARGENTINA; CYANOBACTERIAL blooms; WATER analysis; DATA analysis; MICROCYSTINS; PRINCIPAL components analysis; TEMPERATURE effect; BACTERIAL cells
- Publication
Journal of Toxicology, 2012, p1
- ISSN
1687-8191
- Publication type
Article
- DOI
10.1155/2012/373618