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Tytuł:
Biotechnological bases of organization of industrial crayfish farm in Ukraine
Autorzy:
Marenkov, Oleh
Powiązania:
https://bibliotekanauki.pl/articles/1031670.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
aquaculture
biotechnology
crayfish
farming
ponds
Opis:
Crayfish are valuable invertebrates that are constantly in great demand in all corners of the Earth. Breeding crayfish is not only large-scale production as it can also be arranged in small volumes using pools and installations of closed water supply. Cultivation of crayfish generates profit after a certain period of time, if all biotechnological norms of cultivation are considered. Cultivation of crayfish is a rather promising production, in which it is possible to obtain from 200 to 300% of stable profits during 3–4 years old. The article gives an overview of the technology of growing crayfish, taking into account the characteristics of farming in Ukraine. The basic biotechnological stages of the establishment and operation of the economy are determined, calculations of capital expenditures for the establishment of the economy are presented and the profitability of the project for the production of freshwater crayfish is determined. Cultivation of river crayfish makes it possible to obtain environmentally friendly products that can compete on the markets of Ukraine or EU countries. Also, this way of growing crayfish allows getting stocking material for release in natural reservoirs in order to restore the populations of river crayfish.
Źródło:
World News of Natural Sciences; 2020, 28; 1-12
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Function of water in the landscape of the villages in the past and in present, on example of villages in Lower Silesia
Autorzy:
Niedźwiecka-Filipiak, I.
Serafin, L.
Powiązania:
https://bibliotekanauki.pl/articles/125240.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
surface waters
rural landscape
rivers
ponds
Opis:
Since ancient times, water was associated with colonization, being one of the main factors determining the localization of both cities and villages. Rivers, streams, water reservoirs were also the element contributing to the attractiveness of the rural landscape. Initially, the function of surface waters in the rural areas was limited to utility and connected with farm production. With time, the surface waters started being used for energy production and for industrial purposes. Proper management of surface waters also contributes to increase retention and reduce the risk of flooding. With time, streams and ponds became being used in mansion parks, which have been the endeavor enriching the composition. Today, rivers and water reservoirs in the villages no longer play such a significant utility and industrial role. Their function changed into mainly decorative and recreational. However, in many places the potential of using the areas adjoining rivers and ponds is not used by the village residents, which result in backfilling small water reservoirs in the villages and closing the visibility of flowing streams.
Źródło:
Journal of Ecological Engineering; 2015, 16, 1; 92-99
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary assessment of agriculture influence on heavy metal content in bottom sediments of small water reservoirs and in rushes
Autorzy:
Szydłowski, K.
Podlasińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/100909.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
agriculture
ecology
heavy metals
sediments
ponds
Opis:
The main purpose of the paper was to determine the influence of catchment management on the bottom sediments quality of small water reservoirs as well as to determine toxic metal content in rushes. Samples of bottom sediments were collected in winter 2013 year, form 4 sediment layers (0-5, 5-10, 10-20 and 20-30 cm) at three points along the body of water. The 48 samples were collected. Soil material was prepared according to the procedures used in soil science, the analysis was performed for the fraction with a particle diameter of less than 1 mm. Plant samples from single species aggregations were randomly cut from 5 to 10 locations of 20-50 m2 area. From these samples the average composite sample was prepared. The total content of such elements as Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn was determined by atomic absorption spectrometry (using the Thermo Scientific iCE 3000 series spectrometer) after prior digestion in the mixture (5:1) of concentrated acids HNO3 (65%) and HClO4 (60%). Total Hg content was determined by the AMA 254 analyzer. Between the small water reservoirs adjacent to the areas where organic farming is used, and the reservoirs adjacent to the areas with mineral fertilization there are statistically significant differences in the concentrations of such metals as nickel (layers: 0-5, 5-10, 10-20 and 0-30 cm), as well as cobalt, chromium and iron (in a layer 5-10 cm). It has been found that some plants accumulate higher amounts of heavy metals (average values). Based on obtained results it can be stated that rushes actively captures large amounts of elements reaching studied objects and thereby protect the surface water of the reservoirs from contamination.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 949-962
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Variability of the Planktonic Algae Biomass and Their Species Structure in the Ponds of the Park and Palace Complex in Żywiec
Autorzy:
Jachniak, Ewa
Młyniuk, Agata
Powiązania:
https://bibliotekanauki.pl/articles/123361.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
planktonic algae biomass
urban park ponds
Opis:
The aim of this research was the analysis of the species composition and planktonic algae biomass in the ponds of Habsburg Park in Żywiec. So far, the urban park ponds have been rarely studied (especially in Poland) in this respect. The analyses of the park ponds water in Żywiec were conducted during the vegetation season in 2016, in monthly intervals. The phytoplankton biomass was calculated by comparing the shape of algae to geometrical figures and based on the chlorophyll a concentrations. The chlorophyll a concentrations and values of the planktonic algae biomass remained at a low level. The species composition showed the dominance of diatoms (i.a. Achnanthes lanceolate (Brébisson ex Kützing) Grun. in Cl. & Grun., Encyonema sp. (Kützing) Krammer). The highest values of the planktonic algae biomass were observed in the summer season. The ponds in the Habsburgs Park in Żywiec have great aesthetic and recreational values and therefore more frequent monitoring is necessary.
Źródło:
Journal of Ecological Engineering; 2019, 20, 7; 53-60
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of heavy metal pollution in bottom sediments of small water reservoirs with different catchement management
Autorzy:
Podlasińska, J.
Szydłowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/101221.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
agriculture
ecology
heavy metals
sediments
ponds
classification
Opis:
The main purpose of this work was to determine the degree of negative impact of heavy metals accumulated in the water sediments to aquatic organisms. Samples of sediments were collected in winter 2013, from 4 layers of sediment (0-5, 5-10, 10-20 and 20-30 cm) at three points along the water reservoir. Sediments were prepared for analysis in accordance with the procedures applied in soil science. The analysis was carried out for the fraction with a particle diameter less than 1 mm. The total content of such elements as Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn, was determined by atomic absorption spectrometry (using the Thermo Scientific iCE 3000 series spectrometer) after digestion in a mixture (5:1) of concentrated acid HNO3 (65 %) and HClO4 (60%). The total Hg content was obtained by using the AMA 254 analyzer. Only the lead content in the analyzed samples of bottom sediments exceeded the contamination value given by polish law (the Regulation of the Minister of Environment). According to the classification of PGI samples of sediments are classified mainly as medium polluted sediments (Class II), with the exception of zinc and lead concentrations (Class III). Due to the value of the indicator of sediments ecological risk (Er) for cadmium, the examined sediments from small water reservoirs no. 1 and 2 should be classified as deposits with a higher rate of environmental contamination risk. The sediments from small water reservoirs no. 3 and 4 belong to the class of a much higher index of contamination risk. On the basis of the PER indicator (a degree of potential envi ronmental risk) the sediments from small water reservoirs located within the area of organic farming can be classified as contaminated by heavy metals to a moderate degree. On the other hand, the analyzed sediments of small water reservoirs no. 3 and 4 were classified as deposits with a severe degree of heavy metal contamination. On the basis of the LAW classification one can say that the bottom sediments of examined ponds were classified into different classes depending on the analyzed chemical element.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 987-997
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality of Bottom Sediments of Midfield Ponds and Their Evaluation for the Potential Threat of the Aquatic Environment
Autorzy:
Szydłowski, K.
Brysiewicz, A.
Wesołowski, P.
Podlasińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/125468.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
midfield ponds
sediments
surface water
heavy metals
Opis:
The study aimed at the evaluation of the quality of bottom sediments and evaluation of potential threat to the aquatic environment. Cadmium, cobalt, chromium, copper, nickel, lead, zinc and mercury concentration in the separate layers of the sediments in the pond at Żelisławiec decreased with the depth of bottom sediments. On the other hand, the highest concentrations of the studied elements occurred in the deepest layer of sediments in the pond at Stare Czarnowo. The level of the potential ecological risk (PER) for the sediments of the Żelisławiec pond classifies them as sediments with low quality of the potential ecological risk, whereas the sediments from the pond at Stare Czarnowo are classified as moderate level of the potential ecological risk. In both ponds, the highest Igeo values were reported for zinc and lead.
Źródło:
Journal of Ecological Engineering; 2017, 18, 1; 65-71
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions of Fish Farming In Natura 2000 Areas, Based on the Example of the Catchment of Barycz
Autorzy:
Tokarczyk-Dorociak, K.
Drabiński, A.
Szewrański, S.
Mazurek, S.
Kraśniewska, W.
Powiązania:
https://bibliotekanauki.pl/articles/124748.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
carp ponds
Barycz Valley
Natura 2000
fish farming
Opis:
One of the factors that contributed to the construction of approx.77 km2 offish ponds in the catchment of Barycz starting from the 13th century, which in turn transformed the woods into a mosaic of waters, forests and arable land, were the advantageous physiographic conditions. Fish farming operations conducted in this area led to the creation of a cultural landscape characterised by unique natural values, similar to the natural landscape. Approx. 240 species of birds are observed here, of which 170 are nesting species. Due to its natural values, this area has been subject to natural reserve protection as part of the Landscape Park “Dolina Baryczy” (the Barycz Valley). It was entered in the “Living Lakes” list and it is protected under the Ramsar Convention as well as under the European nature protection network Natura 2000. The established forms of nature protection mean the introduction of a certain binding regime, pursuant to which the economic activity conducted in protected areas must take into account the prohibitions and orders introduced by documents that establish the said forms of protection. Additionally, there is a legal requirement to create a protection plan or conservation plan that constitutes a basis for the realisation of conservation-related objectives. A commercial company Stawy Milickie S.A. (public limited company) operates in the area of this largest fish pond complex in Poland. The scope of its operations includes more than just the breeding and sale of freshwater fish (6500 ha of ponds) but also environmental protection, environmental education and the development of tourism as well as stimulating the development and professional activation of local communities basing on the natural resources that exist in the catchment of Barycz.This study presents the conditions related to fish farming operations conducted in this area. Conducting an extensive management (i.e. often uneconomical from the economic point of view) is a prerequisite for maintaining the biodiversity of this naturally valuable area. The conservation plan of the nature reserve “Stawy Milickie” (Milicz Ponds) contains a series of obligations and limitations with respect to fish farming. The development strategy of the Stawy Milickie SA Company takes into account all these conditions.
Źródło:
Journal of Ecological Engineering; 2016, 17, 3; 185-192
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Age and land use as factors differentiating hydrochemistry and plant cover of astatic ponds in post-agricultural landscape
Wiek i sposób użytkowania terenu jako czynniki różnicujące hydrochemię i roślinność zbiorników astatycznych w krajobrazie porolnym
Autorzy:
Mętrak, M.
Pawlikowski, P.
Suska-Malawska, M.
Powiązania:
https://bibliotekanauki.pl/articles/293026.pdf
Data publikacji:
2014
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
astatic ponds
vegetation
water chemistry
hydrochemia
roślinność
zbiorniki astatyczne
Opis:
Small, astatic ponds are important features of post-glacial landscape, which support heterogeneity and biodiversity of agricultural areas. In the presented research we explored differences in hydrochemistry and plant cover of 20 small ponds located in Northeastern Poland, characterized by diverse age and developed in differently managed areas. According to our research, though changes in water level are under direct influence of water balance in the catchment, to which belonged the ponds, their hydrochemistry seemed to be shaped by processes at the level lower than the catchment scale. Age of the ponds appeared to be an important factor influencing density and species composition of vegetation developed on the studied ponds.
Badania prowadzono przez dwa lata na małych zbiornikach wodnych w krajobrazie porolnym w Mazurskim Parku Krajobrazowym. Wybrano 20 zbiorników podzielonych na trzy grupy różniące się wiekiem, stopniem odizolowania i sposobem zagospodarowania otaczających je terenów. Regularnie monitorowano właściwości chemiczne wody w zbiornikach. W celu oszacowania różnic w pokrywie roślinnej zbiorników wykonano zdjęcia fitosocjologiczne metodą Brauna-Blanqueta. Wykazano, że nowopowstałe zbiorniki istotnie statystycznie różnią się od starych poziomem wody, jej odczynem i zawartością jonów wapnia. Najwyższy poziom wody zarejestrowano w starych zbiornikach położonych w otoczeniu półnaturalnych wilgotnych łąk, największą wartość pH i największe stężenie jonów wapnia – w nowopowstałych zbiornikach. We wszystkich badanych grupach zbiorników poziom wody i wartości badanych parametrów chemicznych podlegały zmienności sezonowej. Roczna dynamika właściwości chemicznych wody nie wykazywała związku z fluktuacjami poziomu wody. Parametry chemiczne wody w starych zbiornikach położonych wśród pól uprawnych nie różniły się od notowanych w starych zbiornikach położonych na obszarze łąk półnaturalnych. Na nowopowstałych zbiornikach dominowały zbiorowiska charakterystyczne dla otwartej toni wodnej. Brzegi młodych zbiorników charakteryzowały się znacznym udziałem błotnistych, luźno pokrytych roślinnością powierzchni. Różnorodność flory młodych zbiorników, wyrażona liczbą gatunków oraz współczynnikiem Shannona- Weavera, była istotnie mniejsza niż w starych zbiornikach. Zbiorniki stare na półnaturalnych łąkach cechował duży udział gatunków charakterystycznych dla rzędu Molinietalia caeruleae W. Koch 1926 oraz dla związku Magnocaricion Koch 1926. W grupie tych zbiorników zarejestrowano największe wartości wskaźników różnorodności biologicznej. Na starych zbiornikach otoczonych polami uprawnymi dominowały pałkowiska Typha latifolia. Zaobserwowano także liczne gatunki charakterystyczne dla siedlisk przekształconych przez człowieka (gatunki ruderalne, chwasty).
Źródło:
Journal of Water and Land Development; 2014, 21; 29-37
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of small, water - filled depressions as a component of the analysis of icesheet retreat dynamics in young glacial areas
Autorzy:
Pieńkowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/294544.pdf
Data publikacji:
2008
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
kettle holes
ponds
icesheet retreat dynamics
young glacial areas
Opis:
The young glacial landscape of the nonhern Europe features numerous post-glacial structures, including drainless relief depressions which are usually filled with ater and are called ponds or kettle holes. Their prestence in Western Pomerania is associated mainly with a zonal arrangement of glacial forms related 10 the retreating icesheet front. Distribution of kettle holes was analysed in a region where their density is highly variable. The study covered mainly the Wełtyń Plateau, the Myślibórz. Lakeland, and the northern part of the Gorzów Plateau. About 11 thousand kettle holes smaller than 1.0 ha, marked on the late 19th century 1:25,000 topographic maps, were included in the analysis. The analysis of the kettle hole distribution, conducted with the aid of GIS software and spatial analysis statistics, demonstrates that the distribution of kettle hole dusters, the shape of the surrounding vegetation patches, and the kettle hole duster alingment may be important components of the retreat reconstruction. The elements mentioned, when factored in the analysis, may contribute to, i.a., understanding of the direction of the ice movement and the sequence of the icesheet front ranges.
Źródło:
Landform Analysis; 2008, 6; 41-46
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cysts of Chrysophyceae from King George Island (South Shetland Islands, Antarctica)
Autorzy:
Mrozińska, Teresa
Olech, Maria
Massalski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2052460.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
King George Island
ponds
streams
cysts of Chrysophyceae
Źródło:
Polish Polar Research; 1998, 19, 3-4; 205-210
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of the macro - and microelements in benthic sediments of selected mid-field ponds
Autorzy:
Brysiewicz, A.
Ligocka, K.
Powiązania:
https://bibliotekanauki.pl/articles/101069.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
benthic sediments
mid-field ponds
macroelements
microelements
chemical composition
Opis:
The agricultural landscape of Western Pomerania is characterised by frequent occurrence of small, post-glacial water ponds commonly called mid-field ponds. They serve numerous important functions, both with regard to agriculture and ecology. Due to their specific location in the agricultural landscape, they are exposed to permanent and strong anthropic pressure, which often translates into pollution of surface water and benthic sediments with macro-and microelements. This study attempts to assess and determine the level of macro – and microelements in benthic sediments, depending on the type of agricultural production, on the example of selected mid-field ponds. The assessed benthic sediments of both ponds were characterised by varied macro - and microelement levels, depending on the collection site and the depth of their deposition. Based on the performed chemical analyses it was found that both observation points in the pond Żelisławiec were characterised by the highest concentrations occurring in the top layer (0-5 cm), which is related to the fact that there are areas of agriculture in the pond basin with the use of mineral and organic fertilisation and occurrence of higher water erosion. And the other assessed mid-field pond (Stare Czarnowo) showed the highest concentration of microelements in the middle layer, 5-15 cm. Statistical analyses revealed that statistically significant differences were observed only for potassium levels, depending on the type of agricultural production in the basin of both assessed ponds. This may result from various types of agricultural crops (Brassica napus L. var. napus and ×Triticosecale Wittm. ex A.Camus) and intense fertilization of arable land in Stare Czarnowo. Statistically significant differences in particular layers of sediment confirm that depending on the type of agricultural activity, mid-field ponds are supplied with various mineral matter at different times, resulting in its accumulation in benthic sediments.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2018, IV/1; 939-950
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Supplying Fish Ponds with Biologically Treated Wastewater on the Quality of Pond Water
Wpływ zasilania stawów hodowlanych biologicznie oczyszczonymi ściekami na jakość wody w stawach
Autorzy:
Tucholski, S.
Sidoruk, M.
Powiązania:
https://bibliotekanauki.pl/articles/388911.pdf
Data publikacji:
2013
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
fish ponds
wastewater
water quality
stawy hodowlane
ścieki
jakość wody
Opis:
Studies on the impact of the effect of supplying fish ponds with biologically treated wastewater on the quality of pond water was carried out in three experimental ponds on the premises of the Wastewater Treatment Plant in Olsztynek in the production season of 2008. The experimental ponds had a surface area in the range of 0.94 ha to 1.04 ha, with a maximum depth of 1.5 m in the summer. Raw wastewater fed to the treatment plant comprised household sewage as well as wastewater from a fruit and vegetable processing plant. Following preliminary treatment, waste was purified biologically in sequencing batch reactors (SBR). The results of physical and chemical analyses indicate that water in ponds fertilized with biologically treated wastewater was superior in quality in comparison with ponds where conventional breeding methods are applied. In the studied ponds, average ammonia nitrogen concentrations were 4- to 18-fold lower than the lowest average values for ponds supplied with water, fertilized and unfertilized, where fish were fed grain or pelleted feed.
Badania dotyczące wpływu zasilania stawów hodowlanych biologicznie oczyszczonymi ściekami na jakość wody w stawach przeprowadzono w sezonie hodowlanym 2008 w trzech stawach doświadczalnych o powierzchni od 0,94 ha do 1,04 i maksymalnej głębokości w okresie letnim 1,5 m, położonych na terenie Oczyszczalni Ścieków w Olsztynku. Ścieki surowe dopływające do oczyszczalni stanowiły mieszaninę ścieków bytowo-gospodarczych i z przetwórstwa owoców i warzyw. Po oczyszczaniu wstępnym oczyszczano je biologicznie w sekwencyjnych reaktorach (SBR). Wyniki badań składu fizykochemicznego wody w stawach doświadczalnych użyźnianych biologicznie oczyszczonymi ściekami wskazują, iż charakteryzowały się one lepszą jakością aniżeli wody w stawach o konwencjonalnych warunkach chowu ryb. średnie stężenie azotu amonowego w wodzie stawów doświadczalnych było od 4 do 18 razy niższe w porównaniu do najniższych średnich wartości w stawach zasilanych wodą, nawożonych lub nienawożonych, w których ryby żywiono paszą zbożową lub mieszanką granulowaną.
Źródło:
Ecological Chemistry and Engineering. A; 2013, 20, 3; 391-399
1898-6188
2084-4530
Pojawia się w:
Ecological Chemistry and Engineering. A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Metal Accumulation in Sediment and Removal Efficiency in the Stabilization Ponds with the Hydrocotyle ranunculoides Filter
Autorzy:
Custodio, María
Orellana-Mendoza, Edith
Peñaloza, Richard
De la Cruz-Solano, Heidi
Bulege-Gutiérrez, Wilfredo
Quispe-Mendoza, Rebeca
Powiązania:
https://bibliotekanauki.pl/articles/124031.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
stabilization ponds
Hydrocotyle ranunculoides
sediment quality
removal efficiency
Opis:
The heavy metal accumulation in the sediment and removal efficiency in stabilization ponds with Hydrocotyle ranunculoides filter were evaluated. Sediment and water were sampled in June, July and August 2018. The sediment sampling for each lagoon was conducted at three sites forming a composite sample. The water samples were collected in the tributary and effluent pipelines to determine the heavy metal concentration and removal efficiency by Hydrocotyle ranunculoides. The determination of heavy metals was performed with the method of atomic flame absorption spectrophotometry. The mean concentration of heavy metals in the sediment, in a descending order, was: Fe > Zn > Pb > Cu > Cd. The concentrations of these metals ranged from 998.0 to 1365.02, from 488.01 to 600.30, from 88.23 to 95.01, from 1.47 to 1.53 and from 0.01 to 0.13 mg/Kg, respectively. In the four stabilization ponds, the pollution factor values for Cd, Cu and Fe qualified as low pollution factor. While for Zn and Pb, they qualified as moderate pollution factors. The heavy metal removal rates from the water varied by metal.
Źródło:
Journal of Ecological Engineering; 2020, 21, 5; 72-79
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Restoration of ponds in the municipal park in Zduńska Wola, Poland
Autorzy:
Widelska, Ewelina
Walczak, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/292845.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
park ponds
park revalorization
water quality monitoring
water system renaturalization
Opis:
The historic municipal park located in Zduńska Wola is covered in the central and northern part by conservator protection through an entry in the register of monuments and on the basis of an entry in the local spatial development plan. In terms of nature, the area has significant values due to old trees and the water system, which consists of two ponds fed by the Pichna River. As part of the preparatory work for the revalorization of the park, several studies and analyses were carried out, including assessment of the sanitary state of waters of Pichna River that supplies reservoirs. Degree of the river pollution made it impossible to restore the water system, the most important element of the park, while further supplying the ponds with river water. In order to ensure a satisfactory degree of purity and transparency of water in ponds, a decision was made to apply complex and modern technological solutions enabling the renovation of the water system. Project documentation was developed in 2015. After two years, they began to implement the project. Banks of both ponds were formed more gently, and the basins were deepened. Selection of vegetation around the reservoir and in the reservoir itself was based on the principle of biocenotic assumptions. The designed system is equipped with a circulation pump, skimmers, bottom drains, mechanical-mineral filter, swamp filter. This was to ensure adequate purification of water in ponds, based on natural processes, stimulated by the use of new, pro-ecological technologies.
Źródło:
Journal of Water and Land Development; 2020, 44; 151-157
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water level trends in the ponds of Siemianice Experimental Forest Farm
Autorzy:
Stasik, Rafał
Kęsicka, Barbara
Korytowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1844421.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
forest ponds
long-term monitoring
Mann–Kendall test
multiyear trend
water level
Opis:
The results of a long-term water level monitoring in three forest ponds are presented in the paper. The ponds are located in the Wielisławice and Laski forest districts in South Wielkopolska, Poland. Two of the analysed ponds are natural ones supplied by precipitation and the third now is disused artificial fishpond of throughflow water management. Systematic water level measurements, as well as measurement of basic meteorological conditions – precipitation and air temperature – were carried out in the 2000–2016 hydrological period. The basic statistics as well as the trends in long-time changes in water levels, were determined using the nonparametric Mann–Kendall test were calculated. The results obtained were statistically inconclusive, but they indicated downward trends in water levels in the natural ponds and upward trends in water levels in the artificial pond. Although a statistically significant downward trend was observed in only one natural pond, it may suggest some negative changes occurring in the catchment of ponds in general.
Źródło:
Journal of Water and Land Development; 2020, 47; 169-175
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

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