scholarly journals Correction to: Degradation of the macro-drainage water quality of an urban basin in Northeastern Brazil

2020 ◽  
Author(s):  
Iana Chaiene de Araujo Vidal ◽  
Rui de Oliveira ◽  
Mônica de Amorim Coura ◽  
Andréa Carla Lima Rodrigues ◽  
Francisco das Chagas da Costa Filho ◽  
...  
Keyword(s):  
Water Quality ◽  
Drainage Water ◽  
Northeastern Brazil

Degradation of the macro-drainage water quality of an urban basin in Northeastern Brazil

2020 ◽  
Author(s):  
Iana Chaiene de Araujo Vidal ◽  
Rui de Oliveira ◽  
Mônica de Amorim Coura ◽  
Andréa Carla Lima Rodrigues ◽  
Francisco das Chagas Costa Filho ◽  
...  
Keyword(s):  
Water Quality ◽  
Drainage Water ◽  
Northeastern Brazil

scholarly journals Assessment of soil and water quality of Barapukuria coal mining site, Dinajpur, Bangladesh

2016 ◽  
Vol 27 (1) ◽  
pp. 63-73
Author(s):  
Rowshon Shad Fardushe ◽  
Md Mahbubul Hoque ◽  
Shimul Roy
Keyword(s):  
Water Quality ◽  
Agricultural Land ◽  
Drainage Water ◽  
Quality Parameters ◽  
Color Temperature ◽  
Mining Site ◽  
The Status ◽  
Land Water ◽  
Soil And Water

From the field observation it is apparent that the color of coal leached drainage water and the agricultural land water are blackish and slightly blackish respectively, which pollutes surface water and the agricultural land. The study showed the present status of the water quality through analyzing different parameters including color, temperature, pH, EC, DO, TDS, BOD, COD, Cl-, Cu, Zn and Fe as well as the status of soil quality where pH, OC, PO4 -, Cu, Cr and Zn were analyzed. All the water quality parameters (e.g. temperature, pH, EC, TDS, DO, and BOD) were within normal levels but the value of COD was higher, which affects the aquatic environment. The concentration of heavy metals in water varied with Zn > Cu > Cr and in soil the concentration varied with Cu > Cr > Zn.Bangladesh J. Sci. Res. 27(1): 63-73, June-2014

scholarly journals Challenges Regarding Water Quality of Eutrophic Reservoirs in Urban Landscapes: A Mapping Literature Review

2018 ◽  
Vol 16 (1) ◽  
pp. 40 ◽  
Author(s):  
Sofia Oliver ◽  
Jason Corburn ◽  
Helena Ribeiro
Keyword(s):  
Public Health ◽  
Water Quality ◽  
Drainage Water ◽  
Urban Landscapes ◽  
Anthropogenic Pressure ◽  
Quality Of Water ◽  
Mapping Review ◽  
Unsafe Water ◽  
Eutrophic Reservoirs

Urbanized river basins usually suffer from anthropogenic pressure, compromising the quality of water. Unsafe water is a risk to public health, especially when there are occurrences of HABs (Harmful Algae Blooms) as in the case of cyanobacteria, which cause different human health problems. In this paper, we aimed to review the scientific literature documenting what has been studied in the scope of the stratified reservoirs of urbanized basins. The mapping review method was used to categorize existing literature on urbanized watersheds and eutrophic reservoirs. Using the keywords “Eutrophic Reservoir” and “Urban” and selecting all the years of open publication on the Science web page, we obtained 69 results, 53 of them meeting the requirements established for the search. Many of the studies mention as the most important determinant for eutrophication of reservoirs and the proliferation of algae, the anthropogenic influence through the diffuse load of streets, domestic and industrial sewage, and even drainage water from agricultural areas in the basin. The results of this study reinforce that informal settlements without sanitary infrastructure are aggravating the deterioration of water quality in urban water sources and therefore posing many risks to public health.

scholarly journals Impact of filamentous cyanobacteria on the water quality of two tropical reservoirs

RBRH ◽  
2017 ◽  
Vol 22 (0) ◽  
Author(s):  
Mario Ubirajara Gonçalves Barros ◽  
Ismael Keslley Carloto Lopes ◽  
Stella Maris de Castro Carvalho ◽  
José Capelo Neto
Keyword(s):  
Water Quality ◽  
Inverse Correlation ◽  
Fish Farming ◽  
Northeastern Brazil ◽  
Filamentous Cyanobacteria ◽  
Negative Effects ◽  
Untreated Wastewater ◽  
Flushing Rates ◽  
Water Quality Deterioration

ABSTRACT Artificial lakes play an important role in water availability in tropical semi-arid Northeastern Brazil. However, in addition to the negative effects that dams have on the water quality of rivers, other practices such as discharge of untreated wastewater, intensive crop fertilization and fish farming have been contributing to water quality deterioration. Climate change may be another driver of water quality decrease. Increases in precipitation and drought intensities as well as temperature increase may redefine the dynamics of planktonic communities and favour species more adapted to the new environment. Water samples were collected in two reservoirs selected based on the recurrence of positive results for saxitoxins, Acarape do Meio (AM) and Sitios Novos (SN). In general, diversity in SN (1.08) was higher than in the AM (0.60). Phytoplankton dynamics in these reservoirs differ from other reservoirs in the same region of Brazil, in the sense that filamentous cyanobacteria are dominant. Furthermore, lower diversity, concentration and richness of chlorophyceae and bacillariophyceae were found in both reservoirs. Increase in diversity was observed during the intense rainy season of 2011, suggesting a slight improvement of water quality. A close inverse correlation between Cylindrospermopsis sp and other cyanobacteria was found in SN (R2= –0.862) and in AM (R2= –0.997) and the data collected demonstrates that a season with intensive rainfall may lead to lower cyanobacteria concentrations probably due to water dilution and higher flushing rates.

Irrigation Water Quality of a Community Garden Complex in the State of Piauí, Northeastern Brazil

2020 ◽  
Vol 231 (3) ◽  
Author(s):  
Yeda Gabriela Alves do Espírito Santo Silva ◽  
Pedro Marcos de Almeida ◽  
Ana Paula Peron
Keyword(s):  
Water Quality ◽  
Irrigation Water ◽  
The State ◽  
Northeastern Brazil ◽  
Community Garden ◽  
Irrigation Water Quality

scholarly journals The relationship between water flow and water quality in an experimental coastal watershed microbasin in Northeastern Brazil

2020 ◽  
Vol 9 (10) ◽  
pp. e7129108944
Author(s):  
Karina Ribeiro da Silva ◽  
Weslei Almeida Santos ◽  
Joel Marques da Silva ◽  
Igor Vieira Leite ◽  
José Augusto Oliveira Junior ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Waters ◽  
Principal Component ◽  
Northeastern Brazil ◽  
P Value ◽  
Coastal Watershed ◽  
Proportional Relationship ◽  
The Relationship

Water quality is an important tool to support the planning and management of water resources. This article has as its main objective to evaluate changes in the quality of the surface waters of the Timbó stream as a function of flow in an experimental watershed located in São Cristóvão (SE), northeastern Brazil. Four sampling campaigns were carried out in 2018 to evaluate pH, dissolved oxygen, electrical conductivity, total dissolved solids, turbidity and temperature at three collection points. Data on land use and occupation and the flow of the Timbó stream were also obtained. The land use and occupation survey indicated that 51% of the total area of the microbasin is occupied by forests and that 49% is composed of pasture, undergrowth and exposed soil. The correlation analysis identified a strong correlation (p-value <0.05) between the studied parameters, with an emphasis on a direct relationship between Q and TUR (r = 0.9) and Q and O (r = 0.6) and an inversely proportional relationship between TDS and CE (r = -0.8), confirming the results of a principal component analysis, where the parameters contributing the most to the quality of the investigated water resource were CE, TDS, OD and turbidity.

scholarly journals The response of zooplankton assemblages to variations in the water quality of four man-made lakes in semi-arid northeastern Brazil

2008 ◽  
Vol 30 (6) ◽  
pp. 699-708 ◽  
Author(s):  
W. Sousa ◽  
J. L. Attayde ◽  
E. D. S. Rocha ◽  
E. M. Eskinazi-Sant'Anna
Keyword(s):  
Water Quality ◽  
Northeastern Brazil ◽  
Semi Arid

scholarly journals Assessing the Influence of Water Management and Rainfall Seasonality on Water Quality and Intestinal Parasitism in Rural Northeastern Brazil

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Alexandre Pessoa Dias ◽  
Deiviane Calegar ◽  
Filipe Anibal Carvalho-Costa ◽  
Maria de Fátima Leal Alencar ◽  
Caroline Ferraz Ignacio ◽  
...  
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Rainy Season ◽  
Dry Season ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Human Consumption ◽  
Detection Rates ◽  
Brazilian Semiarid

Introduction. The drought in the Brazilian semiarid region has affected the quality of water. This study assessed the relationships between enteric parasitoses, water management, and water quality, correlating them with pluviometric seasonality.Methods. Cross-sectional surveys were carried out in four rural communities at the beginning of the dry season (n=151), at the end of the dry season (n=184), and in the rainy season (n=199), in order to collect sociodemographic data, human fecal samples, and samples of the water used for human consumption for physicochemical and microbiological analyses. In 2015, water filters were provided to 30 households under study.Results. There was an increasing trend in detection rates of commensal protozoa and theEntamoeba histolytica/Entamoeba disparcomplex at the beginning of the rainy season, with detection rates of 6% in 2014 and 21.6% in 2016.Giardia intestinalisandAscaris lumbricoidespresented distinct temporal distributions, which peaked in 2015: 20.1% and 30%, respectively. The proportion of inhabitants drinking inadequate water was 55% at the beginning of the dry season and 28.8% at the end of the dry season, reaching 70.9% at the beginning of the rainy season. The presence of filters reduced this proportion among those who received the hollow ceramic candle filter.Conclusions. Data suggest that the strategies to increase water supply in the Brazilian semiarid region can be ameliorated in order to improve the quality of drinking water.

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