Water quality and potamoplankton evaluation of the Nile River in Upper Egypt

Shehata

Egypt. J. of Aquatic Biolo. and Fish.

2016

The present study aims to describe the effect of heavy metals: copper, manganese, iron and zinc on the water quality of El-Bagouria Canal at Kafr El-Zayat region, El-Gharbiah Governorate. Seasonal variations of physico-chemical parameters were studied during the period from summer, 2013 to spring, 2014. Also, to study their effects on the different organs of the commercial fish species; Nile tilapia, Oreochromis niloticus by studying some of biochemical parameters of this fish species (total protein, total lipids, total carbohydrates, ASAT and ALAT) during the study period.Results revealed that, heavy metals in the water showed seasonal variations. Also, data exhibited the highest values of heavy metals in the different organs of O. niloticus were recorded during winter in the liver and kidney and the lowest were observed in the muscles. Biochemical analysis indicated devastating effects, especially enzymes activities, in the metabolic organs. Statistical analysis using analysis of variance (ANOVA, at p<0.05) based on data represent the measured values of heavy metals in the different organs of O. niloticus during the different seasons. One way analysis proved that, there were highly significant differences between the metals and between the different seasons also between different organs. On the other hand, two ways of ANOVA provided highly significant differences between organs and metals at the same seasons. While, non-significant differences were detected at the interactions between seasons and organs at the same metals and between seasons and metals at the same organs. One way analysis for biochemical parameters in the different organs of O. niloticus during the different seasons proved that, there were highly significant differences between the parameters. Meanwhile, there were significant differences between the different seasons and between target organs. Moreover, two ways of ANOVA provided highly significant differences between organs and parameters at the same seasons. While, non-significant differences were found at the interactions between seasons and organs at the same parameters and between seasons and parameters at the same organs.

Section: Magnesiumsupporting

confidence: 88%

Section: Hydrogen Ion Concentration (Ph)supporting

confidence: 83%

Influences of some pollutants on water quality of El-Bagouria Canal at Kafr El-Zayat Region, El-Gharbia Governorate, Egypt

Shehata

Egypt. J. of Aquatic Biolo. and Fish.

2016

“…Nitrate content is stemming from River Nile inflow from the south and nitrification of ammonia which is consumed by algal uptake during growth. The decrease in nitrate depends on the consumption of these ions by phytoplankton as well as their reduction by denitrifying bacteria (El-Otify et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…11) shows lower AEI values on the northern part of the Lake. This may be due to the use of fertilizers and pesticides in the agricultural areas and may suggest the intermittent supply of contaminating materials into the water body (Park 2001;El-Otify and Iskaros 2015).…”

Section: Discussionmentioning

confidence: 99%

Environmental assessment of physical-chemical features of Lake Nasser, Egypt

Rizk

Juzsakova

Creţescu

et al. 2020

Environ Sci Pollut Res

Lake Nasser is one of the largest man-made lakes on earth. It has a vital importance to Egypt for several decades because of the safe water supply of the country. Therefore, the water quality of the Lake Nasser must be profoundly investigated, and physico-chemical parameter changes of the water of the Lake Nasser should be continuously monitored and assessed. This work describes the present state of the physico-chemical (nitrate-nitrogen, nitrite-nitrogen, orthophosphate, total phosphate content, dissolved oxygen content, chemical oxygen demand, and biological oxygen demand) water parameters of Lake Nasser in Egypt at nine measurement sites along the Lake Nasser. The algorithm was devised at the University of Pannonia, Hungary, for the evaluation of the water quality. The aquatic environmental indices determined alongside the Lake Nasser fall into the category of "good" water quality at seven sampling sites and exhibited "excellent" water quality at two sampling sites according to Egyptian Governmental Decree No. 92/2013. In light of the tremendous demand for safe and healthy water supply in Egypt and international requirements, the water quality assessment is a very important tool for providing reliable information on the water quality. The protocol for water quality assessment could significantly contribute to the provision of high-quality water supply in Egypt. In conclusion, it can be stated that the parameters under investigation in different regions of Lake Nasser fall within the permissible ranges and the water of the Lake has good quality for drinking, irrigation, and fish cultures according to Egyptian standards; however, according to European specifications, there are steps to be accomplished for future water quality improvement. Keywords Water quality assessment. Physico-chemical parameters. Aquatic environmental index. Lake Nasser. River Nile. Egypt Nomenclature AEA Aquatic environmental assessment AEI Aquatic environmental index APHA American Public Health Association BOD 5 Biochemical oxygen demand during decomposition occurring over a 5-day period Chl Chlorophyll-a content CLvi Limit value of water chemistry parameter i CMi Measured value of water chemistry parameter i COD cr Chemical oxygen demand DO Dissolved oxygen content EC Electrical conductivity GD Governmental Decree

Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)

“…Calculation method of single factor pollution index of water quality: pH and DO use a separate evaluation method, the remaining indicators using a general method [2] .…”

Section: Single Factor Evaluationmentioning

confidence: 99%

Analysis of Water Quality Based on Physical and Chemical Data in Hanjiang River Basin (China)

Wang¹,

Zhao²,

Zhao³

et al. 2017

Abstract. According to the investigation of 25 stations in Hanjiang River Basin in August 2015 and January 2016, the aquatic health index of the region was evaluated by using the evaluation method. The diversity evaluation grade was light or non-polluting in August 2015 while diversity rating for the heavy pollution in January 2016. Water quality in the summer is better than that in winter season. The greater impact of plankton water quality factor for the total nitrogen and total phosphorus. water ecology evaluation results can better reflect Eutrophication and the degree of risk of algal blooms such as aquatic in water of Hanjiang River Basin.