Differentiation of selected components in bottom sediments of Poland’s Solina-Myczkowce complex of dam reservoirs

2015 ◽  
pp. 21-32
Keyword(s):  
Bottom Sediments ◽  
Dam Reservoirs

scholarly journals Quantity and quality of organic carbon in bottom sediments of two upland dam reservoirs in Poland

2015 ◽  
Vol 41 (1) ◽  
Author(s):  
Halina Smal ◽  
Sławomir Ligęza ◽  
Stanisław Baran ◽  
Anna Wójcikowska-Kapusta
Keyword(s):  
Organic Carbon ◽  
Bottom Sediments ◽  
Dam Reservoirs

Radiocesium wash-off, river transport and redistribution in fluvial system after the Fukushima Dai-ichi nuclear power plant accident

2020 ◽  
Author(s):  
Aleksei Konoplev ◽  
Yoshifumi Wakiyama ◽  
Toshihiro Wada ◽  
Valentin Golosov ◽  
Maxim Ivanov ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Water Samples ◽  
Sediment Cores ◽  
Speciation Analysis ◽  
Water Bodies ◽  
Fukushima Accident ◽  
River Transport ◽  
Dam Reservoirs ◽  
Extreme Flood

<p>Processes responsible for long-term changes in environmental radioactivity after the Fukushima accident are currently high on the agenda. Dynamics of particulate and dissolved radiocesium (r-Cs) has been studied on a number of water bodies, namely Abukuma River, Niida River and Maeda River, the dam reservoirs of Yokokawa (Ota River), Sakashita (Kuma River), Ogaki (Ukedo River) and Shinobu (Abukuma River) and four heavily contaminated irrigation ponds in Okuma town (Inkyozaka, Suzuuchi, Funasawa, Kashiramori). Water samples were collected for dissolved and particulate r-Cs analysis at multiple sites for these water bodies. Wash-off from slopes of contaminated catchments and river transport are key long-term pathways for radionuclide dispersal from contaminated areas after the Fukushima accident. The climate and geographical conditions for the Fukushima Prefecture of Japan are characterized by relatively high annual precipitation (1300-1800 mm/year) and steep slopes which promote higher erosion and higher particulate r-Cs wash-off. At the same time, the r-Cs distribution coefficient <em>K<sub>d</sub></em> in Fukushima rivers was found to be at least an order of magnitude higher than the corresponding values for Chernobyl-derived r-Cs and r-Cs resulting from nuclear weapon tests (NWT) in European rivers. The normalized dissolved wash-off coefficient for Fukushima river watersheds, based on the measured dissolved r-Cs activity concentrations was found to be 1-2 orders of magnitude lower than those for Chernobyl and NWT fallout. In the irrigation ponds r-Cs showed a persistent behavior and was characterized by regular seasonal variations: r-Cs concentrations tend to grow during summer and decrease during winter. Speciation analysis for Okuma ponds showed a much higher exchangeability of r-Cs in bottom sediments than catchment soils. Several methodologies to collect water samples and to separate the particulate and dissolved fractions have been used and showed comparable results for all water bodies under study. For all rivers, reservoirs, and ponds higher values of <em>K<sub>d</sub></em>(r-Cs) have been confirmed when compared with Chernobyl-derived r-Cs in European water bodies. Some observations demonstrated remobilization of r-Cs at river mouths compared to upstream sections which could be explained by the change of river water hydrochemistry from upstream to the mouth, specifically a substantial increase in the concentration of major r-Cs competing cations for selective sorption sites on the suspended matter. Some dam reservoirs and ponds were subjected to integrated suspended sediment sampling. For the dam reservoirs, the particulate r-Cs activity concentration has been found to be water depth-dependent. Sediment cores collected at eight sites along the Abukuma river floodplain in 2018 and during October-November 2019, right after Typhoon Hagibis occurred in the middle of October 2019, demonstrated substantial redistribution of r-Cs due to erosion and redeposition during heavy rainfall and extreme flood. Bottom sediments coring in the dam reservoirs allowed estimation of the average sedimentation rate in the reservoirs and the rate of r-Cs accumulation. This research was partially supported by the Japan Society for the Promotion of Science (JSPS), Grant-in-aid for Scientific Research (B) (18H03389), bilateral project No. 18-55-50002 of Russian Foundation for Basic Research (RFBR) and JSPS.</p>

scholarly journals Spatial distribution and risk assessment of heavy metals in bottom sediments of two small dam reservoirs (south-east Poland)

2015 ◽  
Vol 41 (4) ◽  
pp. 67-80 ◽  
Author(s):  
Halina Smal ◽  
Sławomir Ligęza ◽  
Anna Wójcikowska-Kapusta ◽  
Stanisław Baran ◽  
Danuta Urban ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Metal Concentration ◽  
Bottom Sediments ◽  
Contaminated Sediments ◽  
Skewed Distribution ◽  
Geochemical Background ◽  
Dam Reservoirs ◽  
Significant Difference ◽  
Dredging Operation

Abstract Sediments of two dam reservoirs in SE Poland, Zalew Zemborzycki (ZZ) and Brody Iłżeckie (BI) were studied. The sediments from both reservoirs were sampled in the transects perpendicular to the shoreline, at the river inflow and the frontal dam. The total concentration of Mn, Zn, Pb, Cd, Cu, Cr and Ni was determined by ICP-EAS method after the sample digestion in the mixture of concentrated HNO3 and HClO4 acids. The statistical analyses: value intervals, mean values, variation coefficient, the median and the skewed distribution were performed. To estimate differences between the means for transects, Tukey’s test was applied with least significant difference (LSD) determination. The maps of the metal spatial distribution were drawn and sediment quality according to the geochemical and ecotoxicological criteria evaluated. Differences between the reservoirs in terms of heavy metals concentration in bottom sediments, and regularities in their spatial distribution were found. In the ZZ sediments the concentration was at the level of geochemical background (Zn, Cr), slightly (Cd, Cu, Ni) or moderately (Pb) contaminated sediments. The metal concentration in the sediments of the BI was up to eight times higher as compared to the ZZ. Moreover, sediments from the BI reservoir showed a greater variability of metal concentration than those from ZZ, which resulted from the dredging operation performed in the part of the reservoir. Metal concentration in sediments of the dredged part was ca. 2–5 times lower than in the undredged one, which indicates that after the dredging operation, accumulation of these metals was slight. The concentrations of Zn, Pb and Cd from the undredged part of BI were at the level of contaminated sediments and exceeded the probable effects level (PEL). In the ZZ, the greatest accumulation of metals occurred in the upper part of the reservoir and at the frontal dam, and the lowest in the middle part of the reservoir. In BI, the lower outflow of water in this reservoir caused a lower metal concentration in the sediments at the frontal dam, as compared with the other sediments in the undredged part of the reservoir. The results indicate that in small and shallow reservoirs, areas of accumulation of heavy metals depend on such factors as a parent river current, reservoir depth, water waving, reservoir shape (narrowing, coves/bays), and type of water outflow.

A comparison between the water quality of the main tributaries to three submontane dam reservoirs and the sediment quality in those reservoirs

2010 ◽  
Vol 39 (3) ◽  
Author(s):  
Ewa Szarek-Gwiazda ◽  
Grażyna Mazurkiewicz-Boroń
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Water Samples ◽  
Sediment Quality ◽  
Alkaline Ph ◽  
River Waters ◽  
Dam Reservoirs

A comparison between the water quality of the main tributaries to three submontane dam reservoirs and the sediment quality in those reservoirsNutrients, pH, and organic matter were determined in water samples collected from the Raba River above Dobczyce Reservoir (meso-eutrophic), from the Dunajec River above Czorsztyn Reservoir (mesotrophic), and Rożnów Reservoir (eutrophic), and in the bottom sediments of the reservoirs. The river waters were alkaline (pH 7.2-9.2). In the Raba River and Dunajec River, the ranges of nutrients and organic matter contents were similar (without significant differences) (in mg dm

scholarly journals Heavy metal pollution of ecosystem within the middle course of the Jihlava River

2010 ◽  
Vol 58 (5) ◽  
pp. 255-262 ◽  
Author(s):  
Josef Makovský ◽  
Petr Spurný ◽  
Jan Mareš ◽  
Josef Hedbávný ◽  
Tomáš Vítek
Keyword(s):  
Heavy Metal ◽  
Muscle Tissue ◽  
Brown Trout ◽  
Bottom Sediments ◽  
Fish Muscle ◽  
Limiting Factor ◽  
Barbus Barbus ◽  
Dam Reservoirs ◽  
Significant Difference ◽  
Water Bottom

The monitoring of the contents of heavy metal pollutants: total Hg, Pb, Cd, Cr, Ni, Cu and Zn in fish muscle, water, bottom sediments and zoobenthos was realised in May and July of 2007 on two localities: Vladislav, upstream the Dalešice and Mohelno dam reservoirs (Czech Republic), and Hrubšice downstream them. Samples of fish muscle were taken from chub (Leuciscus cephalus), barbel (Barbus barbus) and brown trout (Salmo trutta m. fario). Water, bottom sediments and zoobenthos samples were taken as representative ones from both localities. The samples were analysed with the apparatus AMA 254, AA-300 and SPECTR AA-30. In water of both sites there was found above-limit (0.1 µg / l) content of mercury (0.99 µg / l Hrubšice, 2 µg / l Vladislav). The bottom sediments in Vladislav were most contaminated by Pb (120.21 mg / kg) and Cr (164.90 mg / kg) and in Hrubšice locality by Ni (90.66 mg / kg). High concentration of Pb (25.84 mg / kg) in Vladislav and of Ni (240.90 mg / kg) and Cr (140.5 mg / kg) in Hrubšice was found in zoobenthos. In the point of view contents of heavy metals in fish muscle tissue, statistically significant (p < 0.05) higher content of Hg was found in barbel and chub from Vladislav (0.155 ± 0.012 mg / kg and 0.163 ± 0.064 mg / kg) in comparison with Hrubšice (0.073 ± 0.035 mg / kg and 0.095 ± 0.082 mg / kg) as similarly as the concentration of Cd in chub (0.062 ± 0.140 mg / kg at Vladislav and 0.006 ± 0.002 mg / kg at Hrubšice), whereas the content of Ni in barbel was statistically significantly higher at Hrubšice (0.175 ± 0.042 mg / kg) compared to Vladislav (0.050 ± 0.017 mg / kg). The last significant difference was found in Pb concentrations, when fish from Hrubšice were more contaminated (concentrations 0.155 ± 0.048 mg / kg in barbel and 0.182 ± 0.110 mg / kg in chub) than the same species from Vladislav (contents 0.050 ± 0.017 mg / kg and 0.064 ± 0.005 mg / kg). In theme of consumption risk of the muscle tissue of fish by FAO/WHO, the Hg was limiting factor at both sites. In the locality Vladislav provisional tolerated weekly intake (PTWI) was 1.94 kg in barbel and 1.84 kg in chub. In the Hrubšice it reached 4.12 kg in barbel, 3.15 kg in chub and 5.51 kg in brown trout.

scholarly journals Speciation forms of phosphorus in bottom sediments of three selected anthropogenic reservoirs with different trophy degree

2017 ◽  
Vol 43 (2) ◽  
pp. 44-50 ◽  
Author(s):  
Maciej Kostecki ◽  
Krystyna Janta-Koszuta ◽  
Katarzyna Stahl ◽  
Bartosz Łozowski
Keyword(s):  
Bottom Sediments ◽  
Extraction Procedure ◽  
Chemical Extraction ◽  
Phosphorus Speciation ◽  
Phosphorus Forms ◽  
Dam Reservoirs ◽  
The Mean ◽  
Mean Concentration

Abstract The study presents the results of the research into different phosphorus forms in the bottom sediments of anthropogenic limnic ecosystems i.e. the reservoirs of Pławniowice, Rybnik and Goczałkowice (SP). The bottom sediments of dam reservoirs were investigated by chemical extraction procedure for phosphorus forms. The lowest value of the mean AAP form percentage in the Pławniowice bottom sediments reflected the effect of reclamation with the hypolimnetic removal that had been conducted in the reservoir since 2003. The highest percentage of the RDP form (2%) was found in the Goczałkowice bottom sediments. The order of the specific speciation forms in the bottom sediments of the examined reservoirs was: Rybnik: AAP > EP > WDP > RDP; 4,630> 3,740 > 117 > 65 > 3.5 mgP/kg Pławniowice: AAP > EP > WDP > RDP; 916 > 783 > 107 > 15 > 1.4 mgP/kg Goczałkowice: AAP > WDP > EP > RDP; 686 > 628 > 51 > 7 > 0.14 mgP/kg The mutual correlations between the phosphorus speciation forms (AAP : EP : WDP : RDP) were as follows: Rybnik: 1,323 : 1,068 : 33 : 18 : 1; Pławniowice: 654 : 559 : 76 : 11 : 1; Goczałkowice: 4,900 : 4,485 : 364 : 50 : 1. The comparison of the mean concentration values for specific phosphorus forms in the bottom sediments of the three investigated reservoirs demonstrated that the Rybnik sediments had the highest contents of phosphorus. The contents in Pławniowice and Goczałkowice were 5-7 times lower

scholarly journals Bottom Sediments from a Dam Reservoir as a Core in Embankments—Filtration and Stability: A Case Study

2021 ◽  
Vol 13 (3) ◽  
pp. 1221
Author(s):  
Karolina Koś ◽  
Andrzej Gruchot ◽  
Eugeniusz Zawisza
Keyword(s):  
Bottom Sediments ◽  
Cohesive Soil ◽  
Organic Content ◽  
Natural Soil ◽  
Earthen Structures ◽  
Dam Reservoirs ◽  
Earth Structures ◽  
Economic Use ◽  
Sealing Elements

A possibility of using bottom sediments from dam reservoirs in earth structures was considered. Sediments from the Rzeszow reservoir (Poland) were used as research material, which, according to geotechnical standards, were classified as low permeable silt with high organic content. As fine, cohesive soil with a low coefficient of permeability, the sediments can be used in sealing elements of hydraulic engineering embankments. In order to verify the suitability of the sediments, stability and filtration calculations were carried out for embankments with a sealing in the form of a core made of the sediments. It was stated that by using a core made of sediments, the volume of seepage on the downstream side during continuous or variable backwater was significantly lower in relation to an embankment without a core, and the phreatic line did not extend to the downstream slope. It is estimated that, in the case of a planned dredging in Rzeszow Reservoir, the amount of dredged sediment would exceed 1.5 million m3, and therefore, the possibility of their economic use is essential. The search for materials that could replace natural soil in earthen structures is an important issue from both the ecological and economic points of view.

Diatoms in bottom sediments of thermokarst lakes of the Pechora Delta

2019 ◽  
pp. 285-290
Author(s):  
Elvira A. Zinnatova, Larisa A. Frolova ◽  
Larisa A. Frolova
Keyword(s):  
Bottom Sediments ◽  
Environmental Conditions ◽  
Sources Of Information ◽  
Thermokarst Lakes ◽  
Thermokarst Lake ◽  
Fouling Organisms ◽  
Diatom Complexes

The Northern lakes are good objects for paleoclimatic reconstructions. One of the sources of information about changes in the ecosystems of lakes are diatoms. The study of diatom complexes revealed 133 taxa belonging to 49 genera, 24 families, 13 orders and 3 classes in the bottom sediments of the thermokarst lake of the Pechora Delta. Dominated by the Holarctic representatives of benthic and fouling organisms giving preference to the alkaline environmental conditions.

Paleoecological study of bottom sediments of the lake Goluboye (Karelian Isthmus) according to the results of diatom analysis

2019 ◽  
pp. 265-269
Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Bottom Sediments ◽  
Modern Science ◽  
Karelian Isthmus ◽  
The Baltic Sea ◽  
Diatom Analysis ◽  
North West ◽  
The North ◽  
Important Direction ◽  
The Baltic

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.

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