Monitoring of the changes in potential environmental risk of some heavy metals in water and sediments of Burullus Lake, Egypt

Melegy, Ahmed; EL-Bady, Mohamed S.M.; Metwally, H. I. M.

doi:10.1186/s42269-019-0182-y

Cited by 10 publications

(8 citation statements)

References 20 publications

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“…Heavy metals estimated levels (Fe, Zn, Pb, Cu, and As) in the water of Burullus Lake and fish farm were within the standard allowed values except for Pb, which exceeded the maximum permitted levels (WHO, 2011), as a result of contamination by industrial effluents and municipal sewage concentrations that might be blamed (Chen et al, 2010;Nafea and Zyada, 2015). Moreover, HM levels in the current study's findings (Burullus Lake and Farmed fish waters) are still within the range of prior examinations, except for Zn, Cu, and Pb, which were greater in both analyzed locations than in past studies (Younes and Nafea, 2012;Ghabour et al, 2013;El-Batrawy et al, 2018;Melegy et al, 2019). The following is the order of the metals: Fe < Zn < Pb < Cu < As < Cd as reported in other studies (Darwish, 2016;El Morshedy, 2017;El-Batrawy et al, 2018).…”

Section: Assay Of Heavy Meals In Water and Fish Tissuessupporting

confidence: 71%

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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Section: Assay Of Heavy Meals In Water and Fish Tissuessupporting

confidence: 71%

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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“…Consistent with previous findings (Melegy et al, 2019), our results showed that pH was alkaline (8.6-9 and 7.8-8.8 during winter and summer, respectively) probably because of the increased photosynthetic activity of phytoplankton in the lake or the chemical nature of water (Al-Sheikh & Fathi, 2010;Nassar & Gharib, 2014). The water of Burullus Lagoon was considered a well-oxygenated ecosystem in both seasons in this study 1mg/L in summer and winter, respectively).…”

Section: Physico-chemical Characters Of Burullus Lagoonsupporting

confidence: 91%

“…It was also related to the increase in the orthophosphate and total phosphorus contents in the central sector. The dissolved salt (PO 4 ) concentrations in the middle basin were higher than those reported for the eastern and western sectors (Younis & Nafea, 2012;Melegy et al, 2019). Higher protein and carbohydrate concentrations were accompanied by the dominance of Chlorophyceae (Boëchat & Giani, 2000).…”

Section: Phytoplankton Biochemical Contentsmentioning

confidence: 84%

“…The Nile Delta is characterized by four shallow coastal lakes: Manzala, Edku, Maryout, and Burullus. Lake Burullus, also known as Burullus Lagoon, has an economic and environmental significance because it is connected to the Mediterranean Sea through the El-Boughaz opening (Melegy et al, 2019). It is the second-largest one in the middle of the two Nile branches forming the Delta; it is also considered a vulnerable area along the delta's coastline (El-Zeiny & El-Kafrawy, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Phytoplankton Composition in Relation to Its Nutritional Value in Burullus Lagoon, Egypt

et al. 2021

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B URULLUS Lagoon, also known as Lake Burullus, is a brackish water lake in the Nile Delta in Egypt. In this study, changes in environmental conditions were assumed to affect phytoplankton species composition and their biochemical structure. The biochemical content of phytoplankton in Lake Burullus was preliminarily explored. Winter cruises were compared with summer cruises from 12 sites representing the main eastern, middle, and western lake basins in 2018. Results revealed that phytoplankton exhibited seasonal variations. In particular, it attained the lowest value in winter (72300 units/L) and the highest value in summer (88700 units/L). This observation was consistent with the high total protein content (2692.5mg/L) in summer. The first major class was Chlorophyceae (37.9%) followed by Bacillariophyceae (29.31%) and Cyanophyceae (20.7%). By comparison, Euglenophyceae and Dinophyceae were rare classes constituting 8.63% and 3.4%, respectively. The maximum total biochemical contents were found in the middle of the lake in winter (870.5, 57.6, and 6.1 mg/L of proteins, carbohydrates, and lipids, respectively), indicating the increase in the total density of phytoplankton, especially Chlorophyceae (13700 units/L), in the central basin (29200 units/L). The optimum total biochemical structure was obtained in the western basin in summer (1909.1, 55.4, and 6.5mg/L of proteins, carbohydrates, and lipids, respectively), suggesting that the phytoplankton density increased to 56000 units/L. Q index showed that the middle and western basins were in mesotrophic to eutrophic states. These findings demonstrated that excessive nutrient loads of drainage water into Burullus Lagoon significantly affected the phytoplankton biodiversity. Therefore, highly efficient management strategies must be developed and implemented in Burullus Lagoon.

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“…In order to place the Marchica Lagoon in a regional context of trace-element pollution status, a comparison was made with other Mediterranean lagoons (Table 6). The comparison showed that the maximal concentrations of Pb, Zn, and Cu recorded in the Marchica Lagoon were higher than those in Bizerte Lagoon, as reported by Barhoumi et al (2016) [83]; Berre Lagoon, as reported by Arienzo et al (2013) [84]; Izmit Bay, as reported by Tan et al (2020) [85]; Prokopos Lagoon, as reported by Katsaros et al (2017) [86]; Málaga Bay, as reported by Castillo et al (2013) [13]; Santa Gilla Lagoon, as reported by Atzori et al (2018) [87]; Burullus Lake, as reported by Melegy et al (2019) [88]; and Gialova Lagoon, as reported by Kanellopoulos et al (2020) [89].…”

Section: Discussionmentioning

confidence: 65%

Seasonal and Spatial Patterns of Ecotoxicological Indices of Trace Elements in Superficial Sediments of the Marchica Lagoon Following Restoration Actions during the Last Decade

Oujidi

Bouch²,

Tahri

et al. 2021

Diversity

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Marchica Lagoon, a Ramsar site on the Mediterranean coast of Morocco, is experiencing the impacts of watershed pollution, which includes pollutants from the domestic, agricultural, industrial, and mining sectors. Restoration actions were undertaken around this lagoon during the last decade in order to protect its ecological value and to develop tourist activity. To conserve the biodiversity in the lagoon, it is important to assess the environmental state of this ecosystem. This study aims to evaluate the ecotoxicological state of sediments through the post restoration characterization of the trace elements Pb, Cu, Zn, Cr, Co, and Ba, as well as their correlation to the major elements, grain size, and total organic carbon, sampled during two campaigns (the wet and dry seasons of 2018) across a sampling network of thirteen stations. Multivariate analysis and ecotoxicological risk assessment of the trace elements using the sediment quality guidelines and five pollution indices (geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF), pollution-load index (PLI), and mean effect range median quotient (m-ERM-Q)) revealed contamination of the lagoon by Pb, Zn, and Cu, and minimal pollution by Cr, Co, and Ba. The distribution of the biological-risk index reveals that four zones of the lagoon may present a high probability of toxicity, thus constituting potential risk areas for aquatic organisms: during the wet season, the area in the northwestern sandbar border, the southwest eutrophication zone, and the mouth of the stream valley conveying industrial discharges; and during dry season, the northwestern eutrophication zone. Despite the restoration actions achieved around the lagoon, the lead, zinc, and copper concentrations increased, and their variation was significant between group stations. The biodiversity conservation of Marchica Lagoon requires continuous monitoring and assessment, as well as the implementation of an integrated management plan with restoration actions, not only around the lagoon, but also at its watershed level.

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Monitoring of the changes in potential environmental risk of some heavy metals in water and sediments of Burullus Lake, Egypt

Cited by 10 publications

References 20 publications

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

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

Phytoplankton Composition in Relation to Its Nutritional Value in Burullus Lagoon, Egypt

Seasonal and Spatial Patterns of Ecotoxicological Indices of Trace Elements in Superficial Sediments of the Marchica Lagoon Following Restoration Actions during the Last Decade

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