Sequential fractionation of phosphorus in sediments of El-Fayum lakes—Egypt

Abdel-Satar, Amaal M.; Sayed, Mohsen

doi:10.1007/s10661-009-1160-x

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…Marine cymothoids are almost limited occupant of shallow water, little of them being known from long depths [11] . The depth of the collected Cymothoidae from the shallower (eastern basin) Location of Qarun Lake was 7m [17] that was appoximately similar to the environments of (Cymothoidae sp. Cy150091, (BAX37137)).…”

Section: Phylogeny Analysis and Interpretationmentioning

confidence: 77%

“…All the previous annotations were used to annotate the accession number (LC138010.1) and produced the protein accession number (BAU78233.1). The depth of the shallower (eastern basin) Location of Qarun Lake, Fayoum, Egypt has a depth from 5m to 8.4m [17]. The main problem came from the Transferring the fingers of Mugil cephalus from Suez Gulf which infested by the Cymothoidae species.…”

Section: Phylogeny Analysis and Interpretationmentioning

confidence: 99%

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Genetic Monitoring and Molecular Phylogeny for Cymothoid Isopod Invasion in Egyptian Lake Qarun Fishes by Using adopted taxonomic marker (COI)

Ma¹

2019

Preprint

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Different types of aquatic ecosystem is abundant by a lot of crustaceans. There are species adapted to maximum of temperature, pressure and salinity. Isopods are a marine parasitic organism and commonly live in warmer seas. They are feeding on blood. Several species settle in the buccal cavity of fish. Parasite became a morbidity case in lake Qarun, GAFRD (General Authority for fish resources development, Fish Statistics yearbook, 2015). DNA barcoding gene (COI gene) was used to make the genetic characterization for the invasive species of Cymothoidae, Cymothoidae sp and recorded in the Genbank. Constructing a phylogeny depending on the degree of similarity between the new record (LC138010.1) and the other records of Cymothoidae species in the Genebank then the environmental conditions were compared according to the analysis of the constructed tree . Suez canal is the primary resource for the fingers of mullet which transferred to Qarun Lake (salinity, 49 ppt ). Ballast water have an environmental effect by transferring the alien species in the Suez Gulf which have a warm weather. This study suggests that the Cymothoidae is expanded invasive species came from its habitat regions to a closed lakes which have a similar condition of water environment, temperature and depth to live and to be a morbidity in Lake Quran. Ballast water is a risky way to transfer the invasive species to Suez Canal then New Suez Canal poses and lead to biodiversity risks. Using eDNA techniques to diagnose the invasive species is very important unit which must be established in general authorities of fish resources and development in Egypt and other countries which invaded by different alien species.

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Section: Phylogeny Analysis and Interpretationmentioning

confidence: 77%

Section: Phylogeny Analysis and Interpretationmentioning

confidence: 99%

Genetic Monitoring and Molecular Phylogeny for Cymothoid Isopod Invasion in Egyptian Lake Qarun Fishes by Using adopted taxonomic marker (COI)

Ma¹

2019

Preprint

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“…The biogeochemical reactions of Fe and S also affect both availability of sedimentary P to aquatic organisms and mobility of P within the sediments (Rozan et al, 2002). Previous studies have shown that the extent of P release is thought to be controlled either by the redox conditions at the sediment-water interface and/or by the formation of authigenic P minerals in supersaturated pore waters (Abdel-Satar and Sayed, 2010;Ruttenberg and Berner, 1993;Rozan et al, 2002). It is widely accepted that reductive dissolution of iron oxides is a major mechanism responsible for the release of P (Ruttenberg and Berner, 1993;Rozan et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of sulfur, iron and phosphorus in coastal polluted sediments, north China

Sun

Sheng

Yang

et al. 2016

Environmental Pollution

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a b s t r a c tThe cycling of sulfur (S), iron (Fe) and phosphorus (P) in sediments and pore water can impact the water quality of overlying water. In a heavily polluted river estuary (Yantai, China), vertical profiles of fluxes of dissolved sulfide, Fe 2þ and dissolved reactive phosphorus (DRP) in sediment pore water were investigated by the Diffusive Gradients in Thin films technique (DGT). Vertical fluxes of S, Fe, P in intertidal sediment showed the availability of DRP increased while the sulfide decreased with depth in surface sediment, indicating that sulfide accumulation could enhance P release in anoxic sediment. In sites with contrasting salinity, the relative dominance of iron and sulfate reduction was different, with iron reduction dominant over sulfate reduction in the upper sediment at an intertidal site but the reverse true in a freshwater site, with the other process dominating at depth in each case. Phosphate release was largely controlled by iron reduction.

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Heavy metals fractionation and risk assessment in surface sediments of Qarun and Wadi El-Rayan Lakes, Egypt

Abdel-Satar

Goher

2015

Environ Monit Assess

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This study establishes a baseline for trace metal speciation in Qarun and Wadi El-Rayan lakes. A five-step sequential extraction procedure was applied for the speciation of the Fe, Mn, Zn, and Cu in sediment samples collected at Qarun and Wadi El-Rayan lakes. Mn and Cu were the most mobile metals, whereas the residue fraction maintained the highest concentrations of Zn and Fe (≈ 60 %). No significant differences in metal concentrations were detected in the sediments of each lake sites, despite of the large distance between them (P > 0.05). Hazardous discharge sources are responsible for the high accumulation of metals in the nonresidual fractions. Qarun Lake showed high mobility factor for all studied metals than Wadi El-Rayan lakes; as such, all the humans, plants, animals and the general biota within the vicinity of this aquatic system are quite vulnerable to the trace metal exposure. According to geoaccumulation index (I-geo), the studied sediments were practically uncontaminated by Fe and Mn and classified as uncontaminated to moderately contaminated with Cu in Qarun and Zn in Wadi El-Rayan lakes. The low values of load pollution index (<1), confirmed the unpolluted condition of the lakes' superficial sediments.

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Sequential fractionation of phosphorus in sediments of El-Fayum lakes—Egypt

Cited by 9 publications

References 33 publications

Genetic Monitoring and Molecular Phylogeny for Cymothoid Isopod Invasion in Egyptian Lake Qarun Fishes by Using adopted taxonomic marker (COI)

Genetic Monitoring and Molecular Phylogeny for Cymothoid Isopod Invasion in Egyptian Lake Qarun Fishes by Using adopted taxonomic marker (COI)

Dynamic characteristics of sulfur, iron and phosphorus in coastal polluted sediments, north China

Heavy metals fractionation and risk assessment in surface sediments of Qarun and Wadi El-Rayan Lakes, Egypt

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