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Number of results: 18
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Abstract

The aim of the study was to determine species structure of aquatic bugs in four anthro-pogenic water reservoirs. Heteroptera structure observed in studied reservoirs was clearly differen-tiated, which refers to age of the ponds. Newly created water reservoirs become quickly colonized mainly by pioneering species Corixinae, which led to formation of taxonomic group population of density exceeding 2700 indiv. m-2. In older reservoirs there were fish, which potential predation pressure led to almost a complete decline of bugs. The reason of bugs poverty in water reservoirs colonized by fish was also probably a small habitat diversity, leading to lack of refuges from predators.
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Authors and Affiliations

Monika Tarkowska-Kukuryk
Wojciech Płaska
Jacek Rechulicz
Tomasz Mieczan
Wojciech Pęczuła
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Abstract

The aim of research carried out was to describe the zonality and structure of zoopleuston in shallow eutrophic reservoirs. Zoopleuston structure discovered in examined reservoirs was quite different than in depression reservoirs and lakes on Łęczna-Włodawa Lakeland. It was related to morphometry of reservoirs and plant richness of shallow litoral zone. Higher species richness in the water/land contact zone was found which confirms previous studies, however, sometimes zoopleuston abundance showed the opposite pattern. Most differences occurred in dominants composition as in water/land contact zone and on the depth of 0.5 m dominated mainly by small species of Heteroptera: Micronecta minutissima and Cymatia coleoptrata.
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Authors and Affiliations

Monika Tarkowska-Kukuryk
Wojciech Płaska
Jacek Rechulicz
Tomasz Mieczan
Wojciech Pęczuła
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Abstract

In result of a lew years' investigations or silting of small water reservoirs located in South Poland, intensity ofthe silting process as well as the granulometrie and chemical composition ofbottorn sediments were evaluated. The content of heavy metals i.e. copper, lead and cadmium was determined in samples collected in various parts or five small water reservoirs. The content of heavy metals was appraised according to the regulation of the Minister of Environment, according to the criteria or Polish Geological Institute, of Inspection lor Environmental Protection, of Institute of Soil Science and Plant Cultivation, and according to the Muller's method. The obtained results or determination of the examined heavy metals concentrations were compared with the values or reservoir and river sediment concentrations determined by other authors in Europe. Appraisal or sill quality, respectively to the adopted criteria, showed only an insignificant degree of pollution. Concentrations ofmicroclemcnts do not exceed the toxic concentrations for soils and environment bul may have a harmful influence on living organisms. Recording of changes or heavy metal pollution during many years' operation or small water reservoirs, considering changes occurring in the basins, requires continuation of investigations. It will enable to record changes or pollution during a longer period or operation or reservoirs, also against the background 01· changes occurring in river basins.
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Authors and Affiliations

Bogusłąw Michalec
Marek Tarnawski
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Abstract

Changes in capacity of water reservoir Cedzyna during its exploitation since 1972 till 2003 are presented in the paper. Analyses were based on cross sections of the reservoir’s basin from before its fulfillment (1967) and those measured with the echo sounder Ceeducer in 2003. Silting of reser-voir was predicted based on empirical methods. The volume of reservoir was found to decrease by 112.8 thousand m3 during 31 years of its exploitation and reservoir’s life span was assessed at 685 years. An error analysis was additionally made of calculating the surface area of a cross section at varying number of sounding sites. It was found that there was no need to note too many coordinates and depths and for the Cedzyna reservoir the distance between measurement sites up to 16 m was sufficient.

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Authors and Affiliations

Jarosław Bodulski
Jarosław Górski
ORCID: ORCID
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Abstract

Artificial small water reservoirs existing over peatbogs of Łęczyńsko-Włodawskie Lakeland have high ecological value. Planktonie rotifer communities of the reservoirs are characterized by high species diversity, presence of rare species as well as high abundance of periphytic and benthic-pcriphytic forms. Low nutrients concentrations of studied reservoirs confirmed low total rotifers density, presence of indicatory species and high ratio of algaevorous to detritivorous species. The analysis of domination structure of planktonie rotifers showed very low stability of their community and high vulnerability for changes of habitat conditions.
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Authors and Affiliations

Andrzej Demetraki-Paleolog
Monika Tarkowska-Kukuryk
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Abstract

The paper presents a small water reservoir Psurów located on the Prosna River (right tributary of the Warta River) in the Opolskie Voivodeship (southern Poland). Results of water quality analyses of the Prosna River flowing into the reservoir and the outflowing water, as well as water stored in the reservoir have been discussed. Water flows of the Prosna River above and below the Psurów reservoir were analyzed. The analyses were carried out from November 2006 to October 2008. The research showed that the small water reservoir Psurów contributed to the reduction of the following loads: phosphates (by about 21 %), nitrates (by 26%), nitrites (by 9%), ammonia (by 5%) and total suspended solids (by 17%). It was found out that there was a statistically significant relationship (p < 0.05) between the volume of water flowing out of the reservoir and the inflowing water (Pearson's correlation coefficient: r = 0.93). Based on the Yollenweider's criterion the Psurów reservoir was classified to polytrophic reservoirs.
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Authors and Affiliations

Mirosław Wiatkowski
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Abstract

The field investigations concerning water and peat bog communities on the territory of Trzebinia in 2000 revealed their little diversity caused by a small number of large water bodies and performed betterment drainages. 12 syntaxa were distinguished which represent 5 classes: Lemnetea minor is (I), Potametea (6), Utricularietea intermedio-minoris (I), Littorelletea uniflorae (I), Scheuchzerio-Caricetea nigrae (I). Among described units 3 plant associations are endangered within Upper Silesia: Myriophylletum verticillati, Hottonietum palustris, Valeriano-Caricetum flavae (montane plant association).
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Authors and Affiliations

Stanisław Cabała
Alicja Suder
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Abstract

An increase of water retention in the programmes of small retention in the country to the year 2015 is estimated at 1141 million m3. It means annual mean increase of retention capacity by c. 60 million m3. Accomplishment of relevant actions in the years 1997–2007 allowed collecting 57 million m3 in lakes, c. 56 million m3 in artificial reservoirs, 18.5 million m3 in fishponds, c. 10.5 million m3 with the channel retention and over 2 million m3 in other investments. It makes total increase of water retention by 142 million m3 which is 12.4% of target retention and the mean annual increment of c. 13 million m3. The paper presents volumes of retained water, sources and structure of financing, mean unit costs of retention increments and the increase of retention capacity in particular voivodships (acc. to new administration division) in the years 1998–2007.

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Authors and Affiliations

Zbigniew Kowalewski
ORCID: ORCID
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Abstract

The aim of the presented research was to analyse the pollution of the Kozłowa Góra Dam Reservoir

with PCBs (28, 52, 101, 118, 138, 153, 180) and heavy metals (Zn, Cu, Ni, Cd, Pb, Cr). The investigated water

and bottom sediments were sampled from two sampling points in November, 2009. The sampling points were

located in the southern part of the Kozłowa Góra Dam Reservoir. The samples of bottom sediments were taken

from the surface layer of 5 cm thickness. The extraction of PCBs from the bottom sediments was performed

according to the EPA 3550B standard. For the sequential extraction analysis of metals from the sampled bottom

sediments, the method suggested by Tessier was applied. Based on the obtained results the water and bottom

sediments from the Kozłowa Góra Dam Reservoir were polluted with polychlorinated biphenyls. The highest

concentration of the investigated PCB congeners in bottom sediments was determined in the sampling point

No. 1 (2.78 µg/kg d.m.), whereas in the sampling point No. 2 this level was over 20-fold lower which might

result from the inflow of these compounds with the waters of the Brynica river. In both sampling points the investigated bottom sediments were predominated by higher chlorinated PCBs with comparable contents of 86%

and 85%, respectively. The level of pollution in the investigated bottom sediments (calculated per dry matter)

with polychlorinated biphenyls did not exceed the level of TEL (< 0.02 mg/kg). The PEL value (3.5 mg/kg) was

exceeded in the case of cadmium in the bottom sediment from the sampling point No. 2 and also lead (91 mg/kg)

from both sampling points. The first two fractions with the mobile forms of metals are the most sensitive fractions to any changes of the environmental conditions in the benthic zone. In those fractions significant contents

of lead, cadmium, nickel and zinc were observed.

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Authors and Affiliations

A. Rosińska
L. Dąbrowska
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Abstract

Artificial water reservoirs pose impact on the natural environment. Impact of the artificial Czorsztyn Lake on groundwater and land management is assessed. The study is based on long-term observations of chemistry, groundwater levels and spring discharges during reservoir construction, filling, and 25-year-long exploitation. Land management changes caused by reservoir construction were recognized using remote sensing. Reservoir construction resulted in land management change in the study area. Built-up and forest areas gained prevalence over farmland areas. Two types of groundwater dominate: HCO3–Ca and HCO3–Ca–Mg, both before reservoir filling (68% analyses) and afterwards (95% analyses), and in control analyses from September 2020 (100% analyses). Gradual decrease in the occurrence of water types with the sulphate ion exceeding 20% mvals is documented, which points to water quality improvement trends. Moreover, changes of water saturation index values with regard to aquifer-forming mineral phases during reservoir construction and early exploitation phasei ndicate hydrochemical modifications. Decrease of groundwater level was related with transformation of the Dunajec river valley during reservoir construction and, accordingly, decrease of regional drainage base level. Groundwater level increased after reservoir filling, which points to coupled impact of the reservoir and increased precipitation recharge. Construction of the Czorsztyn Lake resulted in gradual land management transformation from farmlands into tourist-recreational areas. This change and river valley flooding by surface waters did not cause significant modifications in groundwater quantity and quality. Organization of water-sewage management related with reservoir construction resulted in noticeably improved quality trends.
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Bibliography

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Authors and Affiliations

Włodzimierz Humnicki
1
ORCID: ORCID
Ewa Krogulec
1
Jerzy Małecki
1
ORCID: ORCID
Marzena Szostakiewicz-Hołownia
1
ORCID: ORCID
Anna Wojdalska
1
Daniel Zaszewski
1
ORCID: ORCID

  1. Faculty of Geology, University of Warsaw, Poland
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Abstract

This paper presents the problem of the increasing negative impact of urban heat islands (UHI) on urban residents based on land surface temperature (LST). It is assumed that water bodies in the agglomeration remain cooler than the air and surrounding urban areas. The study aimed to determine the impact of water bodies and surrounding areas covered by trees on the temperature of an urban area and to minimise the impact of UHI on the life quality of people in the temperate climate zone at day temperatures 25°C (W day) and 29°C (H day). In the adopted research methodology, 167 reservoirs, larger than 1 ha, located within 300 m of urban areas, were analysed. Satellite thermal imagery, spatial land use data (Corine Land Cover), and local land characteristics were used. The average temperature of the reservoirs was appropriately at 4.69°C on W day and 1.9°C for H day lower than in residential areas. The average temperature of areas at a distance of 30 m from the reservoirs was 2.69°C higher onWand 0.32°C higher on H than the water of the reservoirs. The area covered by trees was 0.52°C lower on W day and 0.39°C lower on H day than the residential areas located at a distance of 300 m from the reservoir. On terrestrial areas, the lowest temperature was observed in the area covered by trees within 0–30 m from reservoirs both on warm and hot days. Based on the results of this study, UHI mitigation solutions can be suggested.
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Authors and Affiliations

Edyta Sierka
1
ORCID: ORCID
Łukasz Pierzchała
2

  1. University of Silesia in Katowice, Faculty of Natural Sciences, Jagiellońska St. 28, 40-032 Katowice, Poland
  2. Central Mining Institute in Katowice, Katowice, Poland
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Abstract

The purpose of the research is to summarise quantitative characteristics and to analyse the spatial distribution of artificial water bodies as anthropogenic fragmentation elements of medium and small rivers within the Dnipropetrovsk Region, Ukraine. The paper uses current data pertaining to existing reservoirs and mineralisation of water in rivers. Comparison included quantitative characteristics, water surface area, and the volume water in ponds and reservoirs. It has been established that although the total ratio was 97% for ponds to 3% for reservoirs, whereas their water surface area 48%, and the volume of water stored only 23% of the total resources. The paper shows the inexpediency and low efficiency of using ponds as water reservoirs feeding small rivers. Increasing the number of ponds in the river basin has a negative impact on the quality of water resources, in particular, by increasing water mineralisation – total dissolved solids ( TDS). Depending on the river, the following indicator of river basin fragmentation has been determined: 6–20 reservoirs per 100 km2 of the river catchment area, and on average 18–36 ponds and reservoirs are built for every 100 km of the river in relation to the length of the hydrographic network. It has shown the regularity of growing water mineralisation due to the fragmentation of rivers by a large number of artificial reservoirs. A strong correlation between regulation and fragmentation of river basins has been established (coefficient of determination R 2 ranges from 0.72 to 0.91). It proves the possibility to estimate the degree of change (increase) of water mineralisation based on the water flow coefficient K w and the river fragmentation coefficient K s fr in the Dnipropetrovsk Region. The paper offers ways of further research for planning and implementation of a water management strategy concerning ecologically safe levels of water use in small and medium-sized river basins.
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Authors and Affiliations

Hennadii Hapich
1
ORCID: ORCID
Vasyly Andrieiev
2
ORCID: ORCID
Volodymyr Kovalenko
1
ORCID: ORCID
Tatiana Makarova
1
ORCID: ORCID

  1. Dnipro State Agrarian and Economic University, Faculty of Water Management Engineering and Ecology, Serhiia Yefremova St, 25, Dnipro, Dnipropetrovs’ka oblast, 49600, Ukraine
  2. Institute for Nature Management Problems and Ecology, Dnipro, Ukraine
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Abstract

The main scientific goal of this work is the presentation of the role of selected geophysical methods (Ground-Penetrating Radar GPR and Electrical Resistivity Tomography ERT) to identify water escape zones from retention reservoirs. The paper proposes a methodology of geophysical investigations for the identification of water escape zones from a retention fresh water lake (low mineralised water). The study was performed in a lake reservoir in Upper Silesia. Since a number of years the administrators of the lake have observed a decreasing water level, a phenomenon that is not related to the exploitation of the object. The analysed retention lake has a maximal depth between 6 and 10 m, depending on the season. It is located on Triassic carbonate rocks of the Muschelkalk facies. Geophysical surveys included measurements on the water surface using ground penetration radar (GPR) and electrical resistivity tomography (ERT) methods. The measurements were performed from watercrafts made of non-metal materials. The prospection reached a depth of about 1 to 5 m below the reservoir bottom. Due to large difficulties of conducting investigations in the lake, a fragment with an area of about 5,300 m 2, where service activities and sealing works were already commenced, was selected for the geophysical survey. The scope of this work was: (1) field geophysical research (Ground-Penetrating Radar GPR and Electrical Resistivity Tomography ERT with geodesic service), (2) processing of the obtained geophysical research results, (3) modelling of GPR and ERT anomalies on a fractured water reservoir bottom, and (4) interpretation of the obtained results based on the modelled geophysical anomalies. The geophysical surveys allowed for distinguishing a zone with anomalous physical parameters in the area of the analysed part of the retention lake. ERT surveys have shown that the water escape zone from the reservoir was characterised by significantly decreased electrical resistivities. Diffraction hyperboles and a zone of wave attenuation were observed on the GPR images in the lake bottom within the water escape zone indicating cracks in the bottom of the water reservoir. The proposed methodology of geophysical surveys seems effective in solving untypical issues such as measurements on the water surface.

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Authors and Affiliations

Radosław Mieszkowski
ORCID: ORCID
Emilia Wójcik
Mikołaj Kozłowski
Paweł Popielski
ORCID: ORCID
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Abstract

Currently, due to reduced water resources, there is a need to build reservoirs in Poland. Reservoirs perform important economic, natural and recreational functions in the environment, improve water balance and contribute to fl ood protection. In the construction of reservoirs, it is necessary to consider not only hydrological issues related to water quantity, but also its quality, silting, and many other factors. Therefore, the physiographic, hydrological, hydrochemical, and hydrogeological conditions of the projected reservoirs have to be taken into account to limit the potential negative eff ects of decisions to build them. In order to assess the suitability of eight projected small water retention reservoirs (to increase water resources in the Barycz River catchment in Lower Silesia and Greater Poland provinces, this article takes into account hydrological indicators (efficiency of the reservoir, operation time, dependence on the intensity of silting, and flood hazard indicator), water quality (phosphorus load and nitrogen load), hydrogeological conditions (type of geological substratum for the reservoir basin and filtration losses), and safety of the reservoir dam. To develop a theoretical model describing the regularities between the indicators, multivariate statistical techniques were used, including the Principal Component Analysis (PCA) and the Factor Analysis (FA). In order to assess the reservoirs, a synthetic indicator was developed to compare the reservoirs with each other in relation to the conditions. The Cluster Analysis (CA) was used for typological classification of homogeneous locations of projected small retention reservoirs. Own research procedure for identification of the most advantageous water reservoirs, with the use of multivariate statistical techniques, may be used as a tool supporting decision making in other facilities intended for implementation in provincial projects of small retention.
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Authors and Affiliations

Mirosław Wiatkowski
1
Barbara Wiatkowska
2
Łukasz Gruss
1
Czesława Rosik-Dulewska
3
ORCID: ORCID
Paweł Tomczyk
1
Dawid Chłopek
1

  1. Wrocław University of Environmental and Life Sciences, Institute of Environmental Engineering, Poland
  2. University of Opole, Institute of Socio-Economic Geography and Spatial Management, Poland
  3. Institute of Environmental Engineering Polish Academy of Sciences in Zabrze

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