Wyniki wyszukiwania - AGRO

1

Heavy metals in fluvial sediments of the Odra River flood plains - introductory research

100%

Ibragimow A., Glosinska G., Siepak M., Walna B.

Quaestiones Geographicae

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2010

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tom 29

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nr 1

2

Delay in the flow of plant debris on floodplains overgrown with shrub vegetation

100%

Hammerling M., Walczak N., Zawadzki P., Kaluza T.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2014

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tom 13

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nr 4

The study aims to analyze the statistical probability of the slowing down of the plant debris flow through an area rich in shrub vegetation during floods. The shrub density has a direct influence on water velocity. The study was conducted in a 2-meter section of an artificial hydraulic flume. 15 tests were made for each of the different-shaped elements. The artificial elements used were either rectangular or elliptical in shape. Tests were conducted for three different spacings of cylindrical elements imitating the shrub vegetation and for three different depths of the hydraulic flume. Analysis of the test results leads to the conclusion that an increase in the density of cylindrical elements does not always cause an increase in the flow time of plant debris. The study also shows that an increase in the water depth causes an increase in the flow time of elements imitating the thick debris, which is due to a decrease in the water flow velocity. The study also presents an analysis of the probability of plant debris being detained by the cylindrical elements imitating the shrubs. This probability was observed to be higher for rectangular than elliptical elements. It was also observed to be inversely proportional to the water depth. The obtained results indicate that the subject matter of the current study is very interesting and complex and merits further investigation.

3

Changes in land cover and management of floodplains located in towns along the Oder River in the context of flood risk assessment

100%

Glosinska E., Lechowski L.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 1

This article describes the changes in the land cover and management of floodplains in towns located on Poland’s Oder River, estimates flood risk and how it has been changing in these towns, and how these changes have affected the environment. The paper also includes an analysis of trends in floodplain management defined in local planning documents. The research was conducted for the period of 1995-2010 and included two towns: Kostrzyn on the Oder and Krosno Odrzańskie. The former lies in the lower course of the Oder and the latter in its middle section. The research indicates that flood risk has risen due to the continuous development of urbanized areas (both unbuilt and built-up) that used to be exploited as arable land. That had a negative effect on the environment, as well.

4

The impact of inundation-isolation cycles on the culturable bacterioplankton in the Danube River floodplain

100%

Palijan G., Bogut I., Vidakovic J.

Polish Journal of Ecology

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2008

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tom 56

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nr 3

391-403

The investigation was conducted in the Kopački Rit Nature Park (eastern Croatia) which is established to protect the floodplain area of the Danube River. The samples were collected monthly in four sites (channels and lakes) with increasing distance from the river. The aim of investigation was to examine trophic structure of culturable bacterioplankton in relation to inundation-isolation cycles on sampling sites with unequal degree of connection with the Danube river. A change in the ratio of copiotrophs (r-strategists) to oligotrophs (K-strategists) was expected as the different organic carbon sources emerged. The composition of variables was revealed by Principal Component Analysis of abiotic water properties (temperature, water depth, transparency, pH, electrical conductivity, dissolved oxygen, nutrient concentrations) and the chlorophyll-a concentration. Scores of significant components were used in a Multiple Regression as independent variables and the relationship between the scores and abundance of colony forming units (CFUs) was examined. Regression model was significant only for copiotrophs, and their relative dominance was noticed in couple of samples on more isolated sampling sites. In all other samples oligotrophs were a dominant group, especially during the flood pulses or drainage after it. Their elevated abundance was equally distributed in all groups revealed by Principal Component Analysis, and corresponds to the fluvial action. Also concerning the η (eta) squared and R squared values from the two-way ANOVA (sites/samplings) oligotrophs are highly influenced by the sampling period i.e. inundation-isolation cycles. They are probably driven by the allochthonous organic matter provided by floods or have allochthonous origin itself. At the same time, copiotrophs are to some extent coupled with the established water properties, i. e. bottom-up controlled and their abundance is influenced by the localisation of sampling sites in the floodplain. These results describe the development of the conditions that promote habitat specific succession of the culturable bacterioplankton. Established differences had disappeared after additional inundation-isolation cycles.

5

Towards natural flood reduction strategies: introduction to Ecoflood special feature

100%

Kotowski W., Okruszko T.

Journal of Water and Land Development

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2004

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nr 08

6

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Turbulent kinetic energy of water in a compound channel

100%

Koziol A. P.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2011

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tom 43

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nr 2

7

Aquatic mollusc communities in riparian sites of different size, hydrological connectivity and succession stage

100%

Jurkiewicz-Karnkowska E.

Polish Journal of Ecology

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2008

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tom 56

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nr 1

The aim of the present study was to describe the diversity and abundance of the mollusc communities in long and diverse series of riparian water bodies (59 in total) and to compare them with previous (two years before) studies based on much shorter series of sites (21 in total). An attempt was made to check whether the previous analysis of mollusc groupings is suitable to the classification of the riparian sites of a large area. The studies were carried out in the years 2004–2006 in left-bank part of the valley between 53 and 152 km of the course of the lowland medium sized natural river (Bug River, Eastern Poland) in 59 water bodies differing as regards size (from about 0.01 to a few ha), location in the valley, hydrological regime and successional stage. The samples were collected from the bottom (with dredge) and from macrophytes. The high species richness and diversity were found within the study area despite that the natural floodplain fragments were quite small (about 10% of the whole investigated fragment of the river valley). 52 mollusc species were noted: 36 snails and 16 bivalves (over 50% more than in the preliminary series). Relatively rich malacofauna existed in larger and younger water bodies, as well as in some temporary ones, but located in the active floodplain. Species diversity of individual habitats was comparable to that reported from the earlier study (Jurkiewicz-Karnkowska 2006), i.e. H’ values amounted to 2–3 in most cases. However, there were more cases where H’ values exceeded 3, as well as H’ values were higher at larger scale, i.e. site groups and the total study area (3.5–4.5). The most common species (F≥ 50%) within the investigated area were Lymnaea stagnalis, Bithynia tentaculata, Planorbarius corneus, Anisus vortex, Radix balthica and Viviparus contectus. The most frequent species usually constituted significant components of mollusc communities of individual water bodies. The only species with percentages exceeding 10% of total mollusc abundance at the scale of the study area were P. corneus and L. stagnalis. The abundance of molluscs was of the order of several to a few hundred individuals per sample (0.5–1 m2 of bottom). Basing on the occurrence of molluscs in the investigated habitats I–V groups of water bodies were distinguished applying multivariate analysis. They differed in abundance, dominance pattern and diversity of malacocoenoses, as well as frequencies of individual species. Especially high distinctness of malacocoenoses of small temporary water bodies was found.

8

Population structure of water frogs in a floodplain of the River Danube [Szigetkoz] in Hungary

100%

Gubanyi A., Creemers R.

Zoologica Poloniae

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1994

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tom 39

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nr 3-4

9

The flood extent in the lower Biebrza basin calculated by the 1D flow model for different land use scenarios

84%

Szporak S., Miroslaw-Swiatek D., Chormanski J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2008

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tom 40

10

Hydrotechnic structures on the Pomeranian rivers - a reaction to extreme hydrologic phenomena in the 19th century (in the example of the upper Wieprza)

84%

Florek W., Jaromij J., Skwierawska M.

Geographia Polonica

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2010

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tom 83

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nr 1

11

Natural floodplain storage capacity - modelling approach

84%

Miroslaw-Swiatek D., Okruszko T., Chormanski J.

Journal of Water and Land Development

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2004

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nr 08

12

A new species of the genus Anurida Laboulbene, 1865 from river floodplains of Poland (Collembola: Neanuridae)

84%

Sterzynska M., Kaprus I., Ehrnsberger R.

Annales Zoologici

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2006

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tom 56

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nr 2

Anurida riverina sp. nov. from river floodplains of Poland is described. Notes on distribution and systematic relationship are given.

13

Contrasting elevational responses of regularly flooded marsh plants in navigable estuaries

84%

Heuner M., Schroder B., Schroder U., Kleinschmit B.

International Journal of Ecohydrology and Hydrobiology

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2019

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tom 19

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nr 1

14

Water bodies of the floodplain of the middle Pilica River as habitats of Anodonta cygnea

84%

Abraszewska A.

Folia Malacologica

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2012

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tom 20

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nr 1

15

Effects of water quantity on connectivity: the case of the upper Parana River floodplain

84%

Agostinho A. A., Bonecker C. C., Gomes L. C.

International Journal of Ecohydrology and Hydrobiology

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2009

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tom 09

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nr 1

The hydrological regime is the main force driving processes in river-floodplain systems. The flood pulse concept serves as a base from which to study the processes acting in such a system. However, when the flood pulse is regulated and there is a need to re-establish the hydrography at close to natural conditions, the best way to achieve this is via ecohydrology, a newly emerging paradigm. In this paper, we use principles of ecohydrology to evaluate the effect of water quantity on the limnology, biota and fishery of the upper Paraná River systems, where a UNESCO demonstration site on ecohydrology is located. In addition, we argue that dam operation can be crucial for restoring the hydrography of the Paraná River to near natural conditions. The data used were collected between 1986 and 2006 in several habitats of the floodplain. The limnology, biota (periphyton, phytoplankton, zooplankton, benthic invertebrates, fish, macrophytes and riparian vegetation) and fishery (ecosystems services) were all influenced by the alteration in the hydrography prompted by the functioning of the dams located upstream from the demonstration site area. Moreover, the observed deterioration of the water quality due to the presence of toxic cyanobacteria is another strong argument for adjusting the dam’s operation to reestablish the timing of the floods to match critical periods of the biota in order to restore ecosystem biodiversity and services.

16

Morpho-molecular characterization of the litostomatean predatory ciliate Phialina pupula (Müller, 1773) Foissner, 1983 (Haptoria, Lacrymariidae)

84%

Rajter L., Bourland W., Vdacny P.

Acta Protozoologica

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2019

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tom 58

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nr 2

17

Dragonflies (Odonata) of the left-bank Bug River valley between Wlodawa and Koden (middle-eastern Poland)

84%

Buczynski P.

Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński

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2012

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tom 19

The presented paper analyses the occurrence of dragonflies in the left-bank (Polish) part of the Bug River valley between Włodawa and Kodeń (65 km of the river course, 51°32’–51°55’ N, 23°31’–23°38’ E). In total, 40 species were recorded. The key sites for dragonflies were oxbow lakes, the Bug River and its tributaries. Species diversity was found to be relatively low due to a lack of peat lands and dystrophic waters, as well as strong astatism of small water bodies. The effects of strong water pollution in the Bug River were evident. The species composition of dragonflies was typical, but densities of Gomphidae (particularly Ophiogomphus cecilia ) suggested an adverse state of the environment. This is caused by surface runoffs of agricultural wastewater in Poland, but also by strongly polluted rivers in the territory of Ukraine. The study includes a review of earlier research conducted in the upper course Bug River valley. Considering both the old and new data, 54 dragon fly species were recorded in the Middle Bug River valley between Gołębie and Kodeń (246 km of the river course at the border of Poland with Ukraine and Belarus). It is an area of high importance for the protection of dragonflies in terms of species diversity and species assemblages.

18

Restoration of a river landscape: Biotopes as a basis for quantification of species diversity and evaluation of landscape quality

84%

Mekotova J., Sarapatka B., Sterba O., Harper D.

International Journal of Ecohydrology and Hydrobiology

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2006

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tom 06

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nr 1-4

43-51

19

A huge diversity of metopids (Ciliophora, Armophorea) in soil from the Murray River floodplain, Australia. II. Morphology and morphogenesis of Lepidometopus platycephalus nov. gen., nov. spec.

84%

Vdacny P., Foissner W.

Acta Protozoologica

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2017

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tom 56

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nr 1

20

Hydraulic model investigation of flow conditions for floodplains with coniferous and deciduous shrubs

84%

Tyminski T.

Polish Journal of Environmental Studies

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2012

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tom 21

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nr 4

This paper presents the results from a laboratory research project about water flow through and around coniferous and deciduous shrubs. These are the only two types of shrubs that were considered in this research project. The shrub obstruction consisted of natural branches fixed in the bed of the flume, transversly to the direction of the flow. Besides hydrodynamic parameters, shrub density, water swelling over them, and local drag coefficients of the shrubs was measured and calculated. The final measurement was influenced by the density of both shrub types mentioned above and the spatial orientation of their branches in specified shrub zones in the path of the flowing water. These were analyzed both quantitatively and qualitatively and the appropriate computational formulae were proposed.

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