An integrated water quality assessment of Damietta and Rosetta branches (Nile River, Egypt) using chemical and biological indices

Sayed, Seleim M. El; Hegab, Mahmoud H.; Mola, Hesham R.A.; Ahmed, Nasr M.; Goher, Mohamed E.

doi:10.1007/s10661-020-8195-4

Cited by 48 publications

(21 citation statements)

References 28 publications

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“…In Egypt, releasing untreated wastewater into aquatic environments is a significant problem. Therefore, water quality becomes a major threat to aquatic life (El Sayed et al, 2020). The deterioration of aquatic systems has dramatic impacts on water quality, fish health, and human life (Bastami et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt

Goher

Mangood

Mousa

et al. 2021

Environ Monit Assess

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Section: Introductionmentioning

confidence: 99%

“…Alternatively, the quality and pollution indices are widely used to evaluate the quality status and contamination of water (Goher et al, 2014a;El Sayed et al, 2020;Liu & Ma, 2020) and sediments (Abd El-Aal et al, 2020;Arisekar et al, 2020;Imam et al, 2020) to determine the potential risk that may be posed to humans.…”

Section: Introductionmentioning

confidence: 99%

Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt

Goher

Mangood

Mousa

et al. 2021

Environ Monit Assess

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“…This is consistent with other observations by Soltan et al (2016). On the other hand, a depletion in DO concentrations might be owing to a higher usage rate caused by biological processes and high temperature (Radwan, 2005;Goheret al, 2015;El Sayed et al, 2020). Dissolved oxygen and pH, on the other hand, displayed a strong negative relation with the Parasites Prevalence (PP) in lake and farmed Nile Tilapia.…”

Section: Discussion Water Quality and Fish Parasites Relationshipmentioning

confidence: 99%

Fish Parasites and Heavy Metals Relationship in Wild and Cultivated Fish as Potential Health Risk Assessment in Egypt

Radwan

Abbas

Afifi

et al. 2022

Front. Environ. Sci.

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Despite wide studies of biomonitoring aquatic environment through dynamics of host–parasite interaction, bio-indicators to track the influence and accumulation of heavy metals on fish are still few. The present study sheds light on the relation between fish parasites and heavy metals as it threatens fish’s health and, as a consequence, that of humans after fish consumption. Samples of Nile tilapia (Oreochromis niloticus) were collected in Burullus Lake, a wild fish source, and from a private fish farm in Kafr El-Sheikh Governorate, in Egypt. They were exposed to various pollutants associated with anthropogenic activities to determine the levels of accumulation of Fe, Zn, and Cu, along with the top three most toxic metals (As, Cd, and Pb) in water and fish tissues of gills, intestine, liver, and muscles in both wild and farmed O. niloticus. The results showed the order of abundance: Fe < Zn < Pb < Cu < As < Cd. In waters of both farmed and wild fish, there was a significant negative relation between parasite prevalence and heavy metals, including Zn, Pb, and As. Also, there was a significant positive relation between parasite prevalence with Cu while no significant relation was found with Fe and Cd. Heavy metal content was significantly higher (p > 0.05) in non-infected than infected farmed and wild O. niloticus. In addition, a significantly decreased concentration (p > 0.05) of essential heavy metal was recorded in wild fish compared to farmed specimens, while non-essential heavy metal was significantly higher (p > 0.05) in wild compared to farmed fish. Bioaccumulation factors (BAF) of different organs of O. niloticus were ranked in ascending order: Liver > Gills > Intestine > Muscles. In general, the risk assessment showed safe human consumption of farmed and wild fish under the reported environmental conditions in this study. Moreover, the parasite's presence can be adopted as a surrogate indicator to estimate the potential impact of heavy metal pollution and accumulation.

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“…However, DSi flux was reduced to about 15 × 10 3 t yr −1 after dam construction [44,45]. More recently, DSi flux has increased to about 35 × 10 3 t yr −1 [46]. The reduction in DSi flux and the increase in N and P fluxes has led to widespread eutrophication in delta waters.…”

Section: Aswan High Dam and Related Environmental Issuesmentioning

confidence: 99%

“…Increasing N and P, and reduced DSi, has altered the N:Si:P ratio from prior-dam 12:20:1 to post-dam 14:11:1 (data sourced from [42,[44][45][46]. Therefore, N-and Si-limitation of post-dam is evident referring to the optimum of Redfield ratio (16:16:1) [51].…”

Section: Delta Geo-ecohydrological Responsesmentioning

confidence: 99%

Deltas in Arid Environments

Day

Goodman

Chen

et al. 2021

Water

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Due to increasing water use, diversion and salinization, along with subsidence and sea-level rise, deltas in arid regions are shrinking worldwide. Some of the most ecologically important arid deltas include the Colorado, Indus, Nile, and Tigris-Euphrates. The primary stressors vary globally, but these deltas are threatened by increased salinization, water storage and diversion, eutrophication, and wetland loss. In order to make these deltas sustainable over time, some water flow, including seasonal flooding, needs to be re-established. Positive impacts have been seen in the Colorado River delta after flows to the delta were increased. In addition to increasing freshwater flow, collaboration among stakeholders and active management are necessary. For the Nile River, cooperation among different nations in the Nile drainage basin is important. River flow into the Tigris-Euphrates River delta has been affected by politics and civil strife in the Middle East, but some flow has been re-allocated to the delta. Studies commissioned for the Indus River delta recommended re-establishment of some monthly water flow to maintain the river channel and to fight saltwater intrusion. However, accelerating climate impacts, socio-political conflicts, and growing populations suggest a dire future for arid deltas.

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An integrated water quality assessment of Damietta and Rosetta branches (Nile River, Egypt) using chemical and biological indices

Cited by 48 publications

References 28 publications

Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt

Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt

Fish Parasites and Heavy Metals Relationship in Wild and Cultivated Fish as Potential Health Risk Assessment in Egypt

Deltas in Arid Environments

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