Gerenciamento De Sedimentos Do Desassoreamento Do Rio Belém Na Área Urbana De Curitiba: Um Estudo De Caso

Heinrich, Alessandra Belotserkovets; Metzger, Jörg W.; Fischer, Klaus; Mathias, Álvaro Luiz

doi:10.1590/01000683rbcs20140091

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Still in this sense, Tsangaris et al (2014) emphasize that the urban sediment dredging is not the best solution to reduce flooding risks or water bodies maintenance. Heinrich et al (2015) point out that dredging works take large material amounts from river bed, sediment that needs an adequate disposal other than the landfill and that does not occur in inadequate places, due to the its maintenance necessity and possible associated impacts. The sediment can be understood as a compound formed by the material coming from erosive processes, solid derived from the water and sewage plants treatment, besides the mud and particulate matter generate by the industrial sector and urban environment (LEMIERE et al 2014).…”

Section: The Dredgingmentioning

confidence: 99%

River Dredging: When the Public Power Ignors the Causes, Biodiversity and Science

2019

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The river siltingis usually solved by dredging the sediment deposited in its bed, employing many techniques. In dealing with a concrete case, the objective is to expose the technical criteria lack for the execution of such intervention, the impacts to the river, aquatic biota and its real need. Here aspects of the dissociation between consecrated understandings in the engineering and their mismatch with the ecological theories are presented. This work aimed to study urban floods, elucidating their causes, to propose measures and new technologies to deal with them, through programs and urban policies. The intention is to detail the causes of urban floods, understanding the factors involved and with that, discuss how the public power should proceed in what refers to the dredging. The main objective of this work is to stimulate the incorporation of urban rivers into ecological studies and to draw public attention to this issue.

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Section: The Dredgingmentioning

confidence: 99%

River Dredging: When the Public Power Ignors the Causes, Biodiversity and Science

2019

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Assessing the pollution and ecotoxicological status of the Iguaçu River, southern Brazil: A review

de Morais,

Barreto,

de Souza

et al. 2024

Integr Envir Assess & Manag

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The degradation of water resources available for human consumption is increasing with the continuous release of chemicals into aquatic environments and their inefficient removal in wastewater treatment. Several watersheds in Brazil, such as the Iguaçu River, are impacted by multiple sources of pollution and lack information about their pollution status. The Iguaçu River Basin has great socioeconomic and environmental relevance both for the supply of water resources and its high hydroelectric potential, as well as for the high rate of endemism of its ichthyofauna. Also, it is home to large conservation units, such as the Iguaçu National Park, recognized by Unesco as a Natural Heritage of Humanity. Thus, the current review discusses the chemical pollution in the Iguaçu River Basin (IRB) approaching: i) the main sources of pollution; ii) the occurrence of inorganic and organic micropollutants; iii) the available ecotoxicological data, and iv) the socioeconomic impacts in three regions of the upper, middle, and lower IRB. Different studies reported relevant levels of emerging contaminants, persistent organic pollutants (POPs), toxic metals, and polycyclic aromatic hydrocarbons (PAHs), detected in the water and sediment samples, especially in the upper IRB region, associated with domestic and industrial effluents. Additionally, significant concentrations of pesticides and toxic metals were also detected in the lower IRB, revealing that agricultural practices are also relevant sources of chemicals for this watershed. More recently, studies indicated an association between fish pathologies and the detection of micropollutants in the water and sediments from IRB. The identification of the main sources of pollutants, associated with the distribution of hazardous chemicals in the IRB and their potential effects on the biota, as described in this review, represents an important strategy to support water management by public authorities for reducing potential risks of the local endemic biodiversity and exposed human populations.

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Gerenciamento De Sedimentos Do Desassoreamento Do Rio Belém Na Área Urbana De Curitiba: Um Estudo De Caso

Cited by 2 publications

References 13 publications

River Dredging: When the Public Power Ignors the Causes, Biodiversity and Science

River Dredging: When the Public Power Ignors the Causes, Biodiversity and Science

Assessing the pollution and ecotoxicological status of the Iguaçu River, southern Brazil: A review

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