Contiguous urban rivers should not be necessarily submitted to the same management plan: the case of Tietê and Pinheiros Rivers (São Paulo-Brazil)

Abstract

<jats:p>The management of urban water resources plays an important role for developing countries. The Tietê and Pinheiros Rivers (São Paulo, Brazil) are affected by domestic and industrial effluents and by the diffuse pollution. This research aimed to quantify 134 variables in the water of Tietê and Pinheiros Rivers (approximately 7,200 and 6,600 analyses, respectively) from August 2007 to December 2008. The idea was to verify if the fact that both rivers are located in the same basin is enough to consider the application of a single management plan for both. Data showed that the rivers presented significant anthropogenic interference. The results suggested that such rivers must be subjected to individual management plans since there were exclusive occurrences (variables that were only detected in one of the rivers). Moreover, there was a statistically significant difference between rainy and dry periods for eleven variables (p*&lt;0.05, ANOVA), reinforcing the special importance of the temporal component within the monitoring program. It is expected that this study subsidize environmental recovery programs in the Tietê River, to which is recommendable to focus on prosecution of illegal wastewater releases, and in the Pinheiros River, to which special attention is suggested to the pollution derived from the pesticides load to the water body.</jats:p>

Bacterial community composition and potential pathogens along the Pinheiros River in the southeast of Brazil

“…Billings reservoir was chosen for this analysis because the water of the Pinheiros River may somehow mix with the Billings reservoir at a certain circumstance. For instance, the pumping of the Pinheiros River to the Billings reservoir is allowed by Brazilian regulations in cases of flood control, a need for emergency power generation, and other exceptional situations 13 . Linear discriminant analysis (LDA) of effect size (LEfSe) was used to identify biologically and statistically significant changes in the relative OTU relative abundance of microbial taxa 29 .…”

Adsorption of Heavy Metals in Contaminated Water Using Zeolite Derived from Agro-Wastes and Clays: A Review

“…Pinheiros River, a tributary of Tietê River, is a large urban breeding ground of mosquitoes. Insecticides are applied in the river margins to eliminate mosquitoes and other vectors, and traces of these insecticides were found on the waters of Pinheiros River (Cunha et al 2011).…”

Mudanças climáticas e saúde urbana

“…Fora alguns animais, como a capivara e a garça, que frequentam a área, a vida nesse rio concentra-se nas bactérias anaeróbicas, cujo processamento dos depósitos dos sedimentos produz o odor de gases como o H 2 S (gás sulfídrico), característico do ar que se respira nas imediações (Cunha et al, 2011). É nas margens do canal, nos lugares protegidos pelo acúmulo de resíduos flutuantes, que se concentram as larvas e pupas de Culex quinquefasciatus, agrupadas em milhares de indivíduos, na superfície contígua à lâmina d'água.…”