Temat: aquatic plants - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Metals in organs of bottom sediments and aquatic plants of the Ełk River and its tributaries
Autorzy:: Skorbiłowicz, E.
Skorbiłowicz, M.
Zamojska, E.
Wójtowicz, P.
Powiązania:: https://bibliotekanauki.pl/articles/184486.pdf
Data publikacji:: 2018
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: river
metals
bottom sediments
aquatic plants
Opis:: The aim of the work was to analyze the content of Ni, Pb and Cd in organs (root, stem, leaf) Typha latifolia L. and Nuphar lutea as well as bottom sediments of the Ełk River and selected tributaries. An attempt was also made to indicate the factors and processes governing the behavior of the investigated metals in the water environment of the examined rivers. The research object was the Ełk River with its three tributaries - the Gawlik River, the Binduga River and the Kuwasy Canal. Samples of bottom sediments, leaves, stems and roots of Typha latifolia L. and Nuphar lutea were collected in August of 2015. The content of metals was determined by flame atomic absorption spectrometry (F-AAS). The results of analyses of sediments and plant material indicate a lack of environmental pollution by nickel (2.58-8.50 mg-kg-1) and lead (3.82-15.99 mg-kg-1) of the Ełk River and its tributaries whereas the cadmium content ranged from 0.16-0.76 mg-kg-1. Nuphar lutea and Typha latifolia L. showed a varied capacity to accumulate nickel (1.20-10.51 mg-kg-1) and lead (0.04-14.16 mg-kg-1), occurring primarily in the roots. The smallest concentration of nickel and lead was recorded in the stems. The highest concentration of cadmium (2.56 mg-kg-1) was noted in the roots and the lowest (0.01 mg-kg) in the leaves. Factor analysis pointed to the processes of mobilizing elements from bottom sediments as a result of pH drop and their uptake by macrophyte roots and sorption processes of metal ions by macrophytes from river waters and their intensive accumulation in bottom sediments.
Źródło:: Geology, Geophysics and Environment; 2018, 44, 3; 281-293
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zinc and lead in bottom sediments and aquatic plants in river Narew
Autorzy:: Skorbiłowicz, E.
Powiązania:: https://bibliotekanauki.pl/articles/124796.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: river
bottom sediment
aquatic plants
zinc
lead
Opis:: Aquatic ecosystems are a valuable part of natural environment. The increasing level of pollution in waters transforming biocoenoses and other adverse effects of the impact of toxic substances have contributed to the development of biological monitoring. The aim of the study was to determine the changes in contents of zinc and lead in bottom sediments and roots of aquatic plants: Phragmites australis and Acorus calamus in the river Narew. There were 14 points on the river, from where samples of bottom sediments and plant material were collected. The contents of lead and zinc were determined by means of flame atomic absorption spectrophotometry using Varian device. It was proven that bottom sediments were characterized by low contents of zinc and lead except from two sampling points: in Bondary and Narew. Achieved results of analyzes of plant material showed a slight exceeding in the case of lead. Spatial distribution of zinc and lead contents in examined roots of plants coincided with their contents in bottom sediments, which was also confirmed by statistical analysis. It was proven that aquatic plants had greater tendency for accumulation of metals than bottom sediments.
Źródło:: Journal of Ecological Engineering; 2015, 16, 1; 127-134
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: An effect of regulatory works range on ecological changes in watercourse bed
Autorzy:: Bondar-Nowakowska, E.
Hachoł, J.
Powiązania:: https://bibliotekanauki.pl/articles/101542.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:: species similarity
regulation
aquatic plants
species biodiversity
river
Opis:: This paper attempts to assess an effect of the range of regulatory works in watercourse beds on the aquatic plant communities. The results of field studies carried out on sections transformed as a result of regulatory works and the non-altered sections were compared for this purpose. The field studies were conducted in growing seasons in years 2008-2014 on 11 small and medium-sized lowland watercourses in Lower Silesia. They included identification of aquatic plant species and estimation of the degree of bottom coverage with them. The assessment was based on analysis of changes in the values of five biological indicators such as: the number of aquatic plant species, Jaccard similarity coefficient, ecological status, Shannon-Wiener biodiversity index and Pielou`s evenness index. Comparative analyzes enabled to determine the qualitative and quantitative changes in the aquatic plant communities. However, they did not show any correlation between the analyzed biological indicators and the range of regulatory works in watercourse beds.
Źródło:: Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/1; 1129-1142
1732-5587
Pojawia się w:: Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ecological risk assessment in the regulated watercourses
Autorzy:: Bondar-Nowakowska, E.
Hachoł, J.
Powiązania:: https://bibliotekanauki.pl/articles/125007.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: aquatic vascular plants
ecological risk
river
regulation
Opis:: Ecological risk has not been identified well enough for the designers and contractors to take any actions for its limitation. It results from the lack of the basis formed to assess its level objectively. The aim of this study was to determine the standards useful in the evaluation of the ecological risk for aquatic plants in rivers, where it is planned to conduct regulatory works. The basis for the analysis were the results of the study performed in 2008–2014 in unmodified and transformed lowland watercourses in Lower Silesia. 41 study sections were analysed in 11 watercourses. 30 sections were located in regulated watercourses, while 11 were in unmodified streams. The research included vascular aquatic plants identification and the degree of the bottom coverage by these plants. As a result of regulatory works qualitative and quantitative changes in aquatic plants communities were observed. The analysis of these changes concerning the range and conditions of works conduction enabled assigning measures to the factors of the considered risk. It served as a basis for describing the risk register and the matrix of risk. The study demonstrated that the most important threats resulting from the river regulation from the point of view of environmental protection are complete shading of watercourse bed, and in some cases, bed widening and deepening, embankments slope of 1: 1, 1: 0, embankments protection with stone material or their concreting.
Źródło:: Journal of Ecological Engineering; 2015, 16, 5; 183-189
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Zastosowanie wskaźników biologicznych do oceny wpływu regulacji rzeki na zbiorowiska roślin wodnych
Applying the biological indicators into the effects assessment of river regulation on the aquatic plants communities
Autorzy:: Stachowiak, Marta
Pabijan, Liwia
Powiązania:: https://bibliotekanauki.pl/articles/400455.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: rzeka
rośliny wodne
wskaźniki biologiczne
regulacja rzeki
river
aquatic plants
biological indicators
river regulation
Opis:: Celem pracy jest analiza możliwości wykorzystania wskaźników biologicznych do oceny wpływu robót regulacyjnych na zbiorowiska roślin wodnych oraz ocena wpływu czasu, jaki upłynął od wykonania robót na te wskaźniki. Zbadano wpływ na skład jakościowy zbiorowisk roślin wodnych parametrów koryta rzeki i jej strefy przybrzeżnej, które zostały ukształtowane w wyniku prac regulacyjnych. Wskaźnikami biologicznymi oddziaływania regulacji koryta na rośliny wodne były: liczba gatunków, stopień pokrycia dna, wskaźnik różnorodności Schannona-Wienera, wskaźnik równocenności Pielou oraz wskaźnik niedoboru gatunkowego. Na podstawie wyników badań stwierdzono, że regulacja rzeki ma wpływ na rośliny wodne, a analizowane wskaźniki biologiczne mogą być przydatne w ocenie tego wpływu.
This study aims to examine the possibility of using biological indicators, to assess the impact of regulatory works on aquatic plant communities. In addition, it will also conduct an assessment of changes to indicators over time, following works. The analysis focused on the impact of regulatory works on the qualitative composition of aquatic plant communities, as well as parameters of the river bed and its coastal (littoral) zone. The study finds that several biological indicators can function as a measure of impact in relation to regulatory works. These indicators are the number of species, the degree of bottom coverage, the Shannon-Wiener diversity index, the Pielou equality indicator and the species shortage indicator. This study concludes that river regulation can affect aquatic flora, and that the above listed biological indicators may be useful in assessing levels of impact.
Źródło:: Inżynieria Ekologiczna; 2019, 20, 3; 12-19
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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