scholarly journals Environmental Implications of a Stabilization Pond Effluent Released in Paraná River at Ilha Solteira, Brazil: The Quality of Water and Sediment

Author(s):  
Douglas P. Pedroso ◽  
Felipe A. Santos ◽  
Alexandre O. Jorgetto ◽  
João G. T. Queluz ◽  
Bruno P. Rocha ◽  
...  
2020 ◽  
Vol 263 ◽  
pp. 114434
Author(s):  
Julieta Peluso ◽  
Carolina M. Aronzon ◽  
María del Carmen Ríos de Molina ◽  
Dante E. Rojas ◽  
Diego Cristos ◽  
...  

2014 ◽  
Vol 74 (4) ◽  
pp. 769-778 ◽  
Author(s):  
R Factori ◽  
SM Leles ◽  
GC Novakowski ◽  
CLSC Rocha ◽  
SM Thomaz

Most rivers are used as a source to supply entire cities; the quality of water is directly related to the quality of tributaries. Unfortunately men have neglected the importance of streams, which receive domestic and industrial effluents and transport nutrients and pesticides from rural areas. Given the complexity of the mixtures discharged into these water bodies, this study aimed to evaluate the quality of water and sediment of ten tributaries of Pirapó River, in Maringá, Paraná State, Brazil. To this end, the free-floating macrophyte Landoltia punctata (G. Meyer) Les & D.J.Crawford was used as test organism in microcosm, and the toxicity of water and sediment samples was evaluated by the relative growth rate, dry/fresh biomass ratio, and genotoxic effects (comet assay). Samples of water and sediment of each stream were arranged in microcosms with L. punctata. Seven days later, plants were collected for analysis. Nutrient levels were higher than the reference location, indicating eutrophication, but the results indicated a toxic effect for only three streams, and a genotoxic effect for all streams.


2020 ◽  
Author(s):  
Sina Bold ◽  
Jana Friedrich ◽  
Peter Heininger ◽  
Chris Bradley ◽  
Andrew Tyler ◽  
...  

<p><span>More than three quarters of the Earth's land surface is connected to the ocean by rivers. This natural connection between land and ocean by rivers, estuaries and deltas, as well as coastal seas, is essential for humankind in providing key ecosystem services (incl. food and water). However, the quantity and quality of water and sediment transported along the river-sea continuum is changing fundamentally with implications for the structure and functioning of associated ecosystems that are in turn affecting the continued provision of ecosystems services. </span></p><p><span>DANUBIUS-RI, the International Centre for Advanced Studies on River-Sea Systems, is a distributed research infrastructure (RI) integrating studies of rivers and their catchments, transitional waters, such as estuaries, deltas and lagoons, and their adjacent coastal seas (i.e. River-Sea Systems). DANUBIUS-RI’s vision is to achieve healthy River-Sea Systems and advance their sustainable management in order to live within the planet’s ecological limits by 2050. DANUBIUS-RI’s mission is to facilitate excellent research from the river source to the sea </span><span>by (1) providing access to </span><span>state-of-the art </span><span>facilities, methods and tools, as well as samples and data; (2) bringing together relevant expertise to advance process and system understanding and to enhance stakeholder engagement; and (3) enabling the development of integrated management and policy-making in </span><span>River-Sea Systems. DANUBIUS-RI’s mission-oriented, integrated, interdisciplinary and participatory approach seeks to change the process and system understanding of River-Sea Systems and their respective management.</span></p><p><span>DANUBIUS-RI’s</span><span> Science & Innovation Agenda </span><span>is </span><span>guiding the RI’s evolution as it progresses from preparation through implementation to operation. It describes DANUBIUS-RI’s vision, mission and approach, and provides a scientific framework for the RI’s design and highlights the research priorities for the first five years. </span><span>The framework includes interrelated key challenges in River-Sea Systems, such as global change including climate change and extreme events</span><span>, changes in hydromorphology, the </span><span>quantity and quality of water and sediment across the river-sea continuum as well as the structure and functioning of associated ecosystems</span><span>. DANUBIUS-RI’s research priorities are in line with forthcoming missions of Horizon Europe, which have been applied to River-Sea Systems (1): “Achieving healthy inland, transitional and coastal waters” including the research priorities (a) Water Quantity, (b) Sediment Balance, (c) Nutrients and Pollutants, (d) Biodiversity, (e) Ecosystem Services; and (2): “Adapting to Climate Change: Enhancing Resilience of River-Sea Systems” including the research priorities (f) Climate Change, (g) Extreme Events.</span></p><p><span>In 2016, the European Strategy Forum for Research Infrastructures (ESFRI) included DANUBIUS-RI in its roadmap highlighting the need for a research infrastructure at the freshwater-marine interface. </span><span>The Horizon 2020 project DANUBIUS-PP (Preparatory Phase) has built the scientific, legal and financial foundation to enable DANUBIUS-RI to proceed to implementation (www.danubius-pp.eu.</span></p>


2005 ◽  
Vol 33 (5) ◽  
pp. 430-448 ◽  
Author(s):  
Rudolf Pepelnik ◽  
Bernhard Karrasch ◽  
Rainer Niedergesäß ◽  
Burkhard Erbslöh ◽  
Maren Mehrens ◽  
...  

2016 ◽  
Vol 551-552 ◽  
pp. 513-521 ◽  
Author(s):  
Celia Laguna ◽  
Jhon J. López-Perea ◽  
Javier Viñuela ◽  
Máximo Florín ◽  
Jordi Feliu ◽  
...  

2021 ◽  
Vol 25 ◽  
Author(s):  
Hernán Ricardo Hadad ◽  
María Alejandra Maine ◽  
María de las Mercedes Mufarrege ◽  
Gisela Alfonsina Di Luca ◽  
Gabriela Cristina Sanchez

Objectives: The purpose of this work was to compare nutrient concentrations in water, sediment, and in plant tissues of Eichhornia crassipes and Panicum elephantipes from lotic and lentic environments of the Middle Parana River floodplain (Argentina). Materials and Methods: The study was carried out over an 18-month period. Plants, water, and sediment were collected in a lake (lentic environment) and in a river (lotic environment) from the Middle Parana River floodplain. Water and sediment were sampled in sites where P. elephantipes or E. crassipes were predominant and in sites without vegetation. Results and Discussion: The lentic and lotic environments dominated by E. crassipes showed the highest ammonium concentrations. The sediment from the lotic environment showed total phosphorus (TP) and total Kjeldahl nitrogen (TKN) concentrations significantly lower than those found in the sediment from the lentic environment. In the lentic environment, the sediment from the lake with the dominance of E. crassipes showed the highest TKN concentration, while the sediment from the lake dominated by P. elephantipes showed the highest TP concentration. For both plant species and for both environments, TKN and TP tissue concentrations were significantly higher in leaves in comparison with roots. Conclusions: Our results could be used to optimize the efficiency of treatment wetlands. Additionally, the use of locally available macrophytes as contaminant bioaccumulators in the Middle Parana River floodplain is completely feasible.


Author(s):  
Leonardo Capeleto de Andrade ◽  
Rodrigo Da Rocha Andrade ◽  
Flávio Anastácio de Oliveira Camargo

The high population density in a metropolis leads to socio-environmental impacts that directly affect local water resources. This work evaluated the historical data (between 2000 and 2014) of water and sediment monitoring in the Jacuí’s Delta region and analyzed the relationship between these sites. Seven monitoring sites around the Jacuí's Delta were evaluated: the outflow of the rivers Jacuí, Caí, Sinos, and Gravataí; the channels Ilha da Pintada and Navegantes; and Lake Guaíba. Water data were evaluated for: air and water temperature; depth; pH; electrical conductivity; transparency; turbidity; dissolved oxygen; biochemical oxygen demand; phosphorus; nitrogen; total residues; and escherichia coli. Sediment were evaluated for pseudo-total concentrations of metals (Al, Fe, Ca, Mn, Ba, V, Zn, Cu, Pb, Cr, Ni, Co, Li, Be, Cd, Hg, As, and Ag). The quality of water and sediment in the Jacuí's Delta are linked with the tributaries and priority flows of the channels. The historical data of water and sediment around the Jacuí's Delta shows the influence of the tributaries with low quality in the downstream points. The pollution of the rivers Caí, Sinos, and Gravataí negatively affects the environmental quality of the channel Navegantes and Lake Guaíba (catchment points to water supply). The water in those sites presents reductions in dissolved oxygen and high values of coliforms, and the sediment shows high concentrations of metal Zn, Pb, Cr, and Hg. Despite the reduction in Pb and Hg values in the sediment over the past years, pollution from the tributary rivers still persists.


2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Bruno A. Galindo ◽  
Dhiego G. Ferreira ◽  
Caroline Apolinário-Silva ◽  
Mariana C. Terra ◽  
Nícollas G. O. Aprígio ◽  
...  

ABSTRACT Brycon nattereri is an endangered Neotropical fish reported along conserved stretches of the upper Paraná, Tocantins and São Francisco rivers. Populations of this species have been very rare in some Paraná River sub basins. This study analyzes the genetic diversity and population structure of B. nattereri in a restricted area of occurrence recently identified in upper Paraná River basin. Seven microsatellite loci and 497 bp of D-Loop mitochondrial region were examined in 92 individuals from four points along the area of occurrence. Both molecular markers indicated a single population distributed along a stretch of the river approximately 80 km long. Although some of the data suggest an ancient bottleneck, current levels of genetic diversity (H E = 0.574 and h = 0.616) were similar to those of other species of the genus Brycon. The results suggest that the population of B. nattereri has been able to maintain satisfactory levels of genetic diversity, in spite of the small area of occurrence. These data have highlighted an important conservation area and action may prove essential to improve the quality of the environment, and especially the water and riparian plant life, if the area is to be managed and conserved efficiently.


2017 ◽  
Vol 29 (2) ◽  
pp. 133-141
Author(s):  
Farzana Yasmin ◽  
Sayma Khanom ◽  
Md Sunjid Sultan Ferdous

This study was carried out in order to assess the effect of industrial effluents on the surface water and sediment around BSCIC industrial area, Narayanganj. Different parameters such as TDS, DO, pH, EC, Turbidity, BOD, COD, and heavy metals such as Pb, Zn, Cd, Mn, Cr and Ni were investigated. The results showed that, different industries inside the BSCIC area discharge effluents composed of various chemicals at considerably higher levels compared to pollution limits of inland surface water standard given by DoE. Significantly higher levels of EC (3540 ?S/cm), TDS (3862 mg/l), BOD (143.71 mg/l) and COD (396.30 mg/l) were found in the water. Also a higher level of heavy metals along with high pH was found both for the water and sediment around the BSCIC area. A significant correlation was found between the pH, EC and heavy metal concentration of the collected water samples. The above findings point out that the water around the studied area is quite polluted by the industrial activities of the BSCIC area and malicious for surrounding environment.Bangladesh J. Sci. Res. 29(2): 133-141, December-2016


2002 ◽  
Vol 3 (2) ◽  
pp. 133 ◽  
Author(s):  
E. MAHMOUDI ◽  
H. BEYREM ◽  
L. BACCAR ◽  
P. AISSA

The Bou Ghrara lagoon, a stretch of water in southeastern Tunisia, has shown an alarming reduction of its fishery resources since 1993. In order to study the response of free-living nematodes to the water and sediment quality of this area, thirteen stations have been sampled. According to this study, the heavy metal, organic carbon and hydrocarbon content of sediments are key factors negatively influencing the density, biomass and diversity of the nematofauna.


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