scholarly journals Spatio-Temporal Assessment of the Water Quality of the Hammam Boughrara Dam (North-West Algeria)

2021 ◽  
Vol 22 (11) ◽  
pp. 92-103
Author(s):  
Belkheir Djelita ◽  
Lotfi Benadda
Keyword(s):  
Water Quality ◽  
North West ◽  
Spatio Temporal ◽  
Temporal Assessment ◽  
West Algeria

scholarly journals Seasonal Variations in the Hydrogeochemistry and the Domestic-Agro-Industrial Water Quality of the Granite-Gneiss Fractured Rock Aquiferous formations in Wum, North West Region, Cameroon

2019 ◽  
Vol 7 (1) ◽  
pp. 1-16
Author(s):  
Akoachere RA ◽  
Keyword(s):  
Water Quality ◽  
Seasonal Variations ◽  
Fractured Rock ◽  
Granite Gneiss ◽  
Total Hardness ◽  
Study Objective ◽  
North West ◽  
West Region ◽  
Northwest Region

Wum the capital of Men chum Division is an important agricultural area in the Northwest Region in Cameroon vital for the food security of the country. The study objective was to determine and evaluate the seasonal variations during four hydrogeological seasons; dry (March), drywet (June), wet (September) and wetdry (December) in the groundwater chemistry, groundwater rock interactions and domestic-agro-industrial groundwater quality using hydrogeochemical tools; physicochemical parameters, ionic ratios, gibbs diagrams, piper diagrams, durov diagrams, Total Hardness HT, Water Quality Index WQI, Sodium Adsorption Ratio SAR

scholarly journals Spatio-Temporal Assessment of Zooplankton Fauna of Uta Ewa Estuary, Akwa Ibom State, Nigeria.

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 151
Author(s):  
Udeme Effiong Jonah ◽  
Emeka Donald Anyanwu ◽  
Diane Akudo Avoaja
Keyword(s):  
Water Quality ◽  
Water Temperature ◽  
Anthropogenic Activities ◽  
Water System ◽  
Zooplankton Community ◽  
Dominant Group ◽  
Significant Difference ◽  
Spatio Temporal ◽  
Taxonomic Groups ◽  
Temporal Assessment

Estuaries are influenced by the mixture of river water with seawater; creating unique ecosystems with several physical and chemical processes affecting the water quality. Spatial and temporal assessment of the composition, abundance, and distribution of zooplankton fauna of Uta Ewa Estuarine water system was carried out between May 2019 and February 2020 to assess the effects of anthropogenic activities on the zooplankton assemblage. Water and Zooplankton samples were collected from three (3) stations using standard procedures. Some parameters like water temperature, dissolved oxygen, hydrogen-ion, electrical conductivity, and turbidity were determined in-situ. The ranges of the physico-chemical parameters were: water temperature (24.9-25.3oC), EC (62.3-70.9mS/m), pH (6.5-6.7), turbidity (12.0-28.0NTU), DO (3.8-4.7mg/L), BOD (2.3-3.2mg/L), phosphate (3.2-5.2mg/L), and nitrate (3.0-6.3mg/L). ANOVA showed a significant difference (p<0.05) in the spatial and temporal means values of some parameters. A total of 1,067 individuals from 30 zooplankton taxa and 4 taxonomic groups were recorded. Rotifers (33.4%) were the dominant group, followed by protozoa (32.9%), copepods (20.9%) and cladocerans (13.8%). Station 1 had the highest abundance (388 individuals), station 2 (303 individuals) and station 3(375 individuals). The higher number of individuals (193) was recorded in August 2019. The biodiversity indices pointed to slightly polluted to stable environment. This study showed that the water quality and zooplankton community was influenced by anthropogenic activities both spatially and temporally but season also played a major role in the temporal variation. In conclusion, the water quality was deteriorating due to anthropogenic activities, which in turn affected the structure of zooplankton community. Keywords: Abundance, Assessment, Zooplankton, Physicochemical, Estuary

scholarly journals Assessment of spatial and temporal variation of water quality in mid hills of North West Himalyas- a Water Quality Index approach

2019 ◽  
Vol 14 (1) ◽  
pp. 37-48
Author(s):  
Ajay Kumar Singh ◽  
Satish Kumar Bhardwaj
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Quality Index ◽  
Quality Index ◽  
Disease Burden ◽  
Water Sources ◽  
Spatial And Temporal Variation ◽  
North West ◽  
High Disease Burden

Today, the quality of drinking water across the globe has become an environmental concern because of its degradation due to urbanization, industrialization, transportation etc. Solan, a rapidly developing district and an industrial hub, in the recent past has faced water borne diarrhoeal disease outbreaks. Therefore, the study was undertaken to assess the water quality of disease burden regions during monsoon and post monsoon seasons. pH of the water sources was in the range of 6.92- 7.43 and was well within normal limits. Electrical conductivity of water ranged from 151.40- 414.65 µS/cm. The water sources of high disease burden regions exhibited higher EC than the prescribed ICMR standards. DO (range 7.43- 8.56 mg/l) was normal in all disease burden regions. BOD (range 12.25- 23.25 mg/l) was higher than the BIS limits in all regions. The COD, TDS and turbidity (range 75.75- 157.50 mg/l, 2.24- 81.01 mg/l and 1.85- 5.05 NTU respectively) were within BIS limits. The concentrations (mg/l) of Ca, Pb, Hg, Zn and Cr was found in the ranges of 37.2- 122.9, 0.17- 0.51, 0.00- 0.03, 0.74- 8.99 and 0.04- 0.10, respectively. The high disease burden regions exhibited relatively higher contents of Ca, Hg and Cr as compared to lower one and the BIS limits. However, contents of Pb and Zn were above BIS limits in all the regions. The concentration (mg/l) of Mg, NO3-, Cl- and As was in the ranges of 14.25- 30.61, 5.10- 9.88, 16.42- 74.96 , 0.001- 0.014 respectively, which were below prescribed standards. Cd was detected (0.001 mg/l) in Solan region only, however it was within BIS limits. Water Quality Index (WQI) computed by using nine parameters varied from 78.58- 219.78 (very poor to unsafe drinking water class). Interestingly, water sources of all the high disease burden regions were unsafe for drinking (WQI: 102.02- 167.04). Water quality deteriorated more in the monsoons. The study therefore warrants remedial actions of water resource protection and conservation for provision of potable water.

scholarly journals Quantitative spatio-temporal assessment of pollutants in atmospheric air in the combustion of the fuel of road transport

2019 ◽  
Vol 95 (11) ◽  
pp. 1021-1024 ◽  
Author(s):  
Yu. A. Rakhmanin ◽  
Aleksandr V. Levanchuk
Keyword(s):  
Emission Inventory ◽  
Ambient Air ◽  
Road Transport ◽  
Epidemiological Surveillance ◽  
Metal Compounds ◽  
Exhaust Gases ◽  
Polycyclic Aromatic ◽  
Spatio Temporal ◽  
Temporal Assessment

In the paper there are presented results of the study of the number of compounds of metals and polycyclic aromatic hydrocarbons (PAH) emitted into the environment with exhaust gases of road transport. In the composition of the exhaust gases 11000 tons of heavy metal compounds and 49.8 tons of highly toxic of PAHs in the soil were established to annually be emitted into the ambient air of St. Petersburg. There was justified the application of the method of the emission inventory of pollutants into the atmosphere from the combustion of the fuel of vehicles. There was established the quantity of PAH and metals emitted to the environment in dependence on the intensity of the traffic flow. The implementation of results of the study will allow to improve the quality of the sanitary and epidemiological surveillance in the territories of the cities with the developed road transport industry.

Characterisation of the cork growth and quality of cork oak woodlands, North-West Algeria

2019 ◽  
Vol 76 (3) ◽  
pp. 507-522
Author(s):  
Ahmed Chorana ◽  
Belkheir Dehane ◽  
Ramón Santiago Beltrán
Keyword(s):  
Cork Oak ◽  
Oak Woodlands ◽  
North West ◽  
Cork Growth ◽  
West Algeria
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