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Hydroacoustics
2009 Vol. 12 159-166
EN The paper describes method of determining time proceeding of the echo pulse arising as an effect of reflection of sampling pulse given with the known form from layered sea bottom. The main goal of presented model is to afford theoretical data that could be used as a point of reference for the experi[...]
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Woda-Środowisko-Obszary Wiejskie
PL Artykuł przedstawia wyniki analiz wybranych wskaźników chemicznych osadów dennych wód Raszynki, jej dopływów oraz Stawów Raszyńskich. Odczyn osadów w większości przypadków jest obojętny lub lekko kwaśny, optymalny dla rozwoju fauny i flory środowiska wodnego. Przeważają osady mineralne lub z domiesz[...]
EN The article presents results of analyses of selected chemical indicators of the bottom depo sit taken from the Raszynka River, its tributaries and several ponds located in the catchment. Reaction (pH) of the sediments was mostly neutral or slightly acidic – optimum for the growth of aquatic flora an[...]
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Oceanological and Hydrobiological Studies
EN The aim of this study was to assess the ability of bottom sediments to release or accumulate phosphorus. Ex situ experiments with the use of undisturbed sediment cores were done in 11 lakes situated in the Cybina River valley (Wielkopolska, Poland). Phosphorus release was observed both in aerobic an[...]
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Oceanological and Hydrobiological Studies
EN This study presents and discusses the result of research on the chemical composition of bottom sediments of throughflow lakes located in Drawieński National Park. Basic hydrochemical indicators of the studied sediments are discussed: total organic carbon (Corg), total nitrogen (Ntot), and the C_org/[...]
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Oceanological and Hydrobiological Studies
EN Phosphorus release from bottom sediments studied in two zones of Lake Uzarzewskie differing in depth and water oxygenation displayed seasonal and spatial variability. The experiments indicated that the lake receives considerable internal loading, especially from the deeper, anaerobic, rarely-mixed p[...]
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Oceanological and Hydrobiological Studies
EN Experimental research conducted on bottom sediments from the eutrophic Lake Rusałka (Poznań, Poland) indicated that the phosphorus release process has a significant influence on the functioning of the ecosystem. Internal loading was very intense in the deepest part of the lake, where it reached up t[...]
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Oceanological and Hydrobiological Studies
EN The aim of this study was to evaluate the total and soluble forms of Cr, Ni, Cu, and Co contents in bottom sediments of the Supraśl River and its tributaries. Studies were carried out in August 2005 and March 2006. The total contents of metals were determined, following the digestion of the sediment[...]
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Oceanological and Hydrobiological Studies
EN The purpose of the paper was to evaluate the distribution of lead, zinc and chromium contents in different grain fractions of bottom sediments in the Narew River and some of its tributaries. This study also aimed to determine which fractions are mostly responsible for bottom sediment pollution. The [...]
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Oceanological and Hydrobiological Studies
EN The aim of the studies done in a shallow preliminary reservoir (western Poland) was to determine the intensity and seasonal variability of phosphorus release from bottom sediments. Ex situ studies were done using intact sediment cores taken in succeeding seasons at 3 research stations. The highest p[...]
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Oceanological and Hydrobiological Studies
EN The effects of abiotic environmental conditions, such as water oxygen content, pH and temperature, on the release of biogenic substances (mainly orthophosphates) from bottom sediments were examined in freshly collected samples from Lake Góreckie, Wielkopolski National Park. It was observed that thei[...]
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Oceanological and Hydrobiological Studies
EN The presented study is a review of available geochemical data concerning a dredge area in the Puck Bay. It is a small, semi-closed and degraded water body on the Polish Baltic coast. In this region very deep dredging was conducted in the years 1989-95. Five dredge pits were created in the bottom of [...]
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Oceanological and Hydrobiological Studies
EN Denitrification rates in the bottom sediment of the Rzeszów Reservoir (southeastern Poland) were measured using the isotope pairing technique. At the stations studied rates were reported in the range of about 26 to 610 ?mol N2 m-2 h-1, with the figures generally highest in summer. Simple and multipl[...]
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Archiwum Ochrony Środowiska
PL Od czerwca do grudnia 1999 r. prowadzono badania nad zawartością metali ciężkich w wodzie i osadach dennych rzeki Przemszy, w celu uzyskania tła dla prowadzonych równolegle badań hydrobiologicznych. W wodzie rzeki, w górnym jej biegu średnie stężenie poszczególnych metali wynosiło: 0,05 mg Fe/dm3, 0[...]
EN From June to December 1999 investigations on determination of heavy metals in water and bottom sediments of the Przemsza River concentration were carried out. In the headwaters, the average concentration of metals was: 0.05 mg Fe/dm3, 0.028 mg Mn/dm3, 0.001 mg Cu/dm3, 0.046 mg Zn/dm3, 0.0003 mg Cd/d[...]
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Polish Journal of Ecology
EN Data obtained from April to October 1995 (196 days) were used for work out the model of energy flow through the bottom sediments of littoral zone of Dobczyce Reservoir (southern Poland) with special regard to algae, bacteria and roach, Rutilus rutilus (L.) - dominating species in ichthyofauna of thi[...]
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Studia Geotechnica et Mechanica
EN Stability analysis of a levee made of the bottom sediments from Czorsztyn-Niedzica Reservoir is presented in the paper. These sediments were classified as silty sands and, based on the authors’ own research, their geotechnical parameters were beneficial, so the possibility of using this material for[...]
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Oceanological and Hydrobiological Studies
2015 Vol. 44, No. 4 500--507
EN The experiment was established in a set of containers. Every container held a 10 cm thick layer of profundal sediments and water from a badly polluted lake. The following five preparations were tested (brand names): AQUAKALGON+, BIOGEN REMEDIANT, BIODENN K, ECOTABS 1(TABLETS), ECOTABS 2(POWDER). The[...]
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Journal of Ecological Engineering
2017 Vol. 18, nr 1 238--245
EN The paper presents a research covering the stability of phosphorus retention in the bottom sediments, resulting from application of gypsum in anoxic conditions and in slightly acidic environment (pH~5) of solutions. The present work also contains an analysis of possible effects of gypsum application[...]
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Nukleonika
EN Measurements of activity concentrations and speciation of 137Cs in bottom sediments of the Curonian Lagoon were carried out in samples collected in 1999-2003. In addition, the sorption-desorption processes of caesium in disturbed bottom sediments of fresh and sea water systems were investigated in l[...]
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Journal of Ecological Engineering
2016 Vol. 17, nr 4 295--303
EN The article presents the results of studies upon metals (Pb, Zn, Cr, Ni, Cu, Co) in bottom sediments and in various parts of the aquatic plants taken from the Bug river (Poland). The metal contents in the examined environmental elements were determined by AAS technique. The aim of this study was to [...]
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Journal of Ecological Engineering
2016 Vol. 17, nr 2 121--127
EN Research on the structure of sediments was carried out in 2015 in the river Krąpiel and its tributaries. The main objectives of this study were to classify the types of sediments with grain size analyzing according three different criteria, as well as influence of the substrate on the abundance and [...]
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