The impact of the Danube Iron Gate Dam on heavy metal storage and sediment flux within the reservoir

Vuković, Dubravka; Vuković, Ž.; Stanković, S.

doi:10.1016/j.catena.2013.07.012

Cited by 56 publications

(25 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the upstream, sediment may adsorb more organic matter and some elements with the help of fine fraction . In the downstream of MD, which is the upstream of Dachaoshan Reservoir, the high-velocity flow cannot lead a stable hydrogeological environment to preserve most elements (Vukovic et al, 2014). Comparing with the sediments in mainstream, samples collected in tributary are influenced more lightly and affected by its own upstream where villages and farmland locate in (He et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

“…Because each area has its own environmental condition, the compositions of parent materials should be concerned in the assessment (Youssef and El-Said, 2011). Soils on the band are broken by air-slake and transport into river by rainfall (Vukovic et al, 2014). The humanity in the drainage basin is a driving force for pollution inputs and enhances the preservation of elements (Liu et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial distribution and environmental risk of major elements in surface sediments associated Manwan Dam in Lancang River, China

Zhao

Dong

Sylvie

et al. 2015

EJSS

View full text Add to dashboard Cite

Article Info Received : 13.07.2014 Accepted : 22.11.2014 Bulk elements and grain sizes in sediments collected at upstream and downstream of Manwan Dam were studied to demonstrate the spatial distribution of heavy metals in the sediments and to assess their risk. Correlation analysis showed that the spatial distribution of Cd, Zn and Mg were significantly affected by dam construction. PCA analysis demonstrate that Cd and Zn were both controlled by Ca, As, Pb, organic matter and clay. Mg was controlled by silt, Al, P and K. The risk assessment demonstrated that the pollution of Cd, As, Zn were more serious than other heavy metals. Fine-grained sediments with higher risk level were found in the section near the upstream of dam, while coarse-grained ones with lower risk level were found in the section far away from the downstream of dam. The sections in tributary were lower in risk than those in the main stream. Heavy metal concentrations in the mainstream sediments were influenced by dam construction and those in tributary were influenced by both dam construction and human activities in locality. Unusual high concentrations of Cd, As, and Zn in both sections implied that more pollution prevention measures are needed in the Manwan Dam in order to prevent increased heavy metal pollutions in the Lancang-Mekong River.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial distribution and environmental risk of major elements in surface sediments associated Manwan Dam in Lancang River, China

Zhao

Dong

Sylvie

et al. 2015

EJSS

View full text Add to dashboard Cite

show abstract

“…One of the major problems today is the presence of environmental pollutants in aquatic ecosystems, especially heavy metals. In the aquatic system, they can be deposited into sediments mainly as non-biodegradable pollutants [2][3][4]. Metal pollutants present in water can accumulate in aquatic organisms from water, sediments or through the food chain [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heavy Metals Concentration in Tissues of Three Different Fish Species Included in Human Diet from Danube River

Milanov¹,

Krstić

Marković

et al. 2016

Acta Veterinaria

View full text Add to dashboard Cite

The aim of this study was the investigation of water, sediments and fi sh tissues contamination with heavy metals. All samples were taken from the Danube River in Belgrade region, a location upstream from Batajnica. Concentrations of Cd, Hg and Pb in water samples were not detected, while concentrations of Zn, Fe, Cu and As were in the range of 0.004 -0.330 mg L -1. Iron was the most deposited metal in sediment samples in contrast to water samples where all investigated metals were detected. For the purpose of heavy metals determination in fresh fi sh tissue, fi fteen samples of three different fi sh species, silver carp (Hypophthalmichthys molitrix), common carp (Cyprinus carpio) and wels catfi sh (Silurus glanis) were collected. Concentrations of Pb, Cd, As and Hg were determined in the digestive tract, liver and muscle by absorption spectroscopy. The highest concentration of Pb was in the digestive tract in all three fi sh species, ranging from 0.036 to 1.518 μg g -1 , while Cd was mostly deposited in the liver. Concentrations of As were in the range of 0.36 -0.73 μg g -1 in Hypophthalmichthys molitrix, 0.013 -0.18 μg g -1 in Cyprinus carpio and 0.003 -0.005 μg g -1 in Silurus glanis tissues, while the content of Hg was equal in all tested tissues of carp. Concentrations of all metals were found to be present in the fi sh samples at different levels, but these values are under the maximum residual levels prescribed by the European Union (EU) and the maximum allowed concentrations (MAC) for Serbia, so the fi sh meat is acceptable for the human consumption.

show abstract

“…Moreover, other findings can provide support for this phenomenon. For example, Li et al (2013b) reported that there may be more organic carbon in the lacustrine area of a reservoir where fishes and other aquatic organisms are concentrated; Arndt et al (2013) stated that the sediment in the lacustrine area of a reservoir adsorbed more organic matter with the help of the fine fraction; and Vukovic et al (2014) stressed that the high flow in the riverine area of a reservoir led to an unstable depositing circumstance that could not preserve the organic carbon in sediments, in contrast to the lacustrine area of a reservoir. Both TOCs and TNs correlate significantly with the mean grain size, sand and aggregate degree according to the correlation analysis (Table 2), which demonstrated that the preservation of organic matter was influenced by the sediment texture.…”

Section: Organic Carbon and Total Nitrogen In The Sedimentmentioning

confidence: 99%

Spatial and seasonal dynamics of organic carbon in physically fractioned sediments associated with dam construction in the middle Lancang-Mekong River

et al. 2015

View full text Add to dashboard Cite

Purpose Dam construction alters hydrological conditions, impacting the sedimentary environment in the reservoir and modifying the regional flow of carbon. This study examined the spatial and seasonal dynamics of organic carbon in sizefractioned sediments to identify the role of physical protection (e.g. burial, aggregation) for preserving carbon and the potential impact of a dam on the mineralization of sedimentary organic carbon in the dammed Lancang-Mekong River. Materials and methods Sediment samples were collected from the Manwan Reservoir, China, in the rainy and dry seasons using a gravitational bottom sampler. One sample was collected from the centre of the river and two samples were collected on the river edges, 5 m away from each bank. Sediments were divided into three size classes of waterstable aggregates by wet sieving, including macroaggregates, microaggregates and silts. The total organic carbon (TOC), labile organic carbon (LOC), total nitrogen (TN) and stable carbon isotope (δ 13 C) were measured to analyse the dynamic features of organic carbon in the sediments. Results and discussion The preservation of organic carbon in the sediments collected from the main stream decreased with an increase in distance from the Manwan dam, while it remained consistently high in the tributaries. The majority of the sediments collected during the rainy season preserved more TOC and TN than the samples collected during the dry season. Because of the increase in the proportion of sands in macroaggregates and microaggregates, the TOC contents decreased. In contrast, silts and clays were not affected and performed well in protecting organic carbon. The sediments in the lacustrine area and forepart of the transition area, with lower δ 13 C and higher C/N values, suggested a mixture of aquatic and agro-ecosystem inputs and led to high proportions of LOC in TOC. Conclusions Dam construction reinforced the carbon sink and role of physical protection in the Manwan reservoir by enhancing fine fraction deposition and organic carbon inputs, especially during the rainy season. The sediments dominated by silts and clays absorbed and preserved more organic carbon than the samples dominated by sands. The majority of the organic carbon buried in the lacustrine area, the forepart of the transition area and the tributaries was protected by microaggregates, silts and clays. With the development of fisheries and agriculture, increasing amounts of labile organic carbon buried in sediments may lead to an increase in the potential for carbon mineralization.

show abstract

The impact of the Danube Iron Gate Dam on heavy metal storage and sediment flux within the reservoir

Cited by 56 publications

References 27 publications

Spatial distribution and environmental risk of major elements in surface sediments associated Manwan Dam in Lancang River, China

Spatial distribution and environmental risk of major elements in surface sediments associated Manwan Dam in Lancang River, China

Analysis of Heavy Metals Concentration in Tissues of Three Different Fish Species Included in Human Diet from Danube River

Spatial and seasonal dynamics of organic carbon in physically fractioned sediments associated with dam construction in the middle Lancang-Mekong River

Contact Info

Product

Resources

About