Wyniki wyszukiwania

1

Physical water and retaining properties of hydrogenic soil of the Vistula delta

100%

Piascik H., Smolczynski S., Orzechowski M.

Polish Journal of Soil Science

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1998

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tom 31

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nr 2

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Trapetum natantis Muller et Gors 1960 in hydromeliorative facilities in Serbia

100%

Dzigurski D., Ljevnaic-Masic B., Nikolic L.

Acta Societatis Botanicorum Poloniae

|

2013

|

tom 82

|

nr 2

3

Physicochemical properties of water retained in midfield bog pools

100%

Urban D., Grzywna A.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2013

|

tom 10

4

Spatial distribution of topsoil water content along a loess hillslope transect

100%

Usowicz B., Rejman J.

Acta Agrophysica

|

2000

|

tom 35

The paper presents statistical, geostatistical and fractal analysis of variability of topsoil water pontent along a loess hillslope. Spatial dependence of topsoil water content was observed on studied sites. On a site with plants, the range of spatial dependence was smaller than on a site without plants. Fractal dimension showed that topsoil water on a site with plants was more randomized than on a site without, il.

5

Ecology of rare water plant communities in lakes of north-eastern Poland

84%

Jablonska E., Klosowski S.

Acta Societatis Botanicorum Poloniae

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2012

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tom 81

|

nr 1

Habitat studies were conducted on three rare plant communities dominated by Nuphar pumila, Nymphaea candida and Hydrilla verticillata in lakes of north-eastern Poland. The comparison of habitat properties of these three types of phytocoenoses with those of Nuphar lutea common in the area under study was also performed. It was demonstrated that the plant communities studied were ecologically distinct. The habitats of the phytocoenoses of N. pumila differed most significantly from those of the other phytocoenoses. They often inhabited softer waters poor in Mg2+, dissolved SiO2, but rich in total Fe, PO43−, NO3−, and were associated with acidic substrates containing lower levels of Ca2+ and Na+, but greater amounts of total Fe and NO3−. The differences in the habitats of H. verticillata and N. candida phytocoenoses were most pronounced in the case of four properties of water: Na+, K+, Cl−, and Mg+. Their values were lower in waters of the H. verticillata phytocoenoses. The habitats of all the three types of rare phytocoenoses differed considerably from those of N. lutea. The most significant differences were found between the N. lutea and N. pumila phytocoenoses and the smallest differences were between the patches of N. lutea and N. candida. The properties of water were more important in differentiating the habitats of the phytocoenoses studied than the substrate properties. Due to alkalization and increase in water hardness in the lakes studied the stands of N. pumila are among the most threatened. The patches of N. candida and H. verticillata, which occur in waters with a wider range of hardness and tolerating a slight increase in trophy, can still continue to persist in the lakes for a long time.

6

Factors differentiating the habitats occupied by phytocoenoses of Phragmitetum communis [Gams 1927] Schmale 1939 in lakes of Wielkopolska Region

84%

Pelechaty M., Burchardt L., Siepak J.

Polish Journal of Environmental Studies

|

2000

|

tom 09

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nr 5

409-417

In the summer seasons of the years 1996-1998 habitat studies of 60 phytocoenoses of Phragmitetum communis in 30 lakes of Wielkopolska region were carried out. The aim of the study was a comparison of two groups of phytocoenoses exposed to different effects of wind (and waves) and two other groups subjected to a different degree of anthropopressure in respect to 28 properties of water and 23 properties of substrate. Results were expected to answer the question whether the phytocoenoses of this community reveal an internal ecological variability (habitat and floristic) in the local scale as well as to determine which of the two factors has a more important differentiating effect on the phytocoenoses and their habitats.

7

A study of the Baltic water optical transparency

84%

Dera J., Sagan S.

Oceanologia

|

1990

|

tom 28

8

Application of NIR spectroscopy for the analysis of water-carbohydrate interactions in water solutions

84%

Bakier S.

Acta Agrophysica

|

2008

|

tom 11

|

nr 1[156]

9

Improvement of water-air properties of eroded soils in a loess landscape after the application of agrohydrogel

84%

Paluszek J., Zembrowski W.

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

|

2008

|

tom 39

The research was carried out in a fi eld experiment in eroded Haplic Luvisols developed from loess at a privately owned farm in Bogucin (51°20’N, 22°23’E) at the Lublin Upland. After spring wheat had been sawn, 9 plots with an area of 9 m2 each, including 3 control plots, were marked out. AgroHydroGel was spread over in the doses of 1 gּ kg–1 and 2 gּ kg–1 recalculated to dry soil) and mixed within the 0–5 cm layer of soil. AgroHydroGel is a cross-linked hydrophilic polyacrylamide copolymer with water absorption of 300–500 gּ cm–3. Soil samples were collected in June and August 2005 at the layer of 0–5 cm. The results of this study indicate that the use of AgroHydroGel in the doses of 1 and 2 gּ kg–1 improved the majority of the water-air properties in the soil surface layer. The bulk density decreased signifi cantly hereas the maximum water capacity, saturated hydraulic conductivity, total porosity, content of macropores > 20 μm, actual air permeability and permeability at fi eld water saturation were signifi cantly higher. The polymer dose of 2 gּ kg–1 was more effective, increasing signifi cantly also fi eld water capacity in the soils studied. The applied doses of the hydrogel did not change signifi cantly actual soil moisture, retention of water useful to plants, including retention of easily available water, and content of water-stable aggregates < 0.2 μm in diameter. A more benefi cial effect of AgroHydroGel on water-air properties of the eroded soils was found in August.

10

Air, water and retaining properties of alluvial soils in a delta landscape

84%

Piascik H., Orzechowski M., Smolczynski S.

Polish Journal of Soil Science

|

1998

|

tom 31

|

nr 2

11

Changes in the chemical properties of water in a small pond in vertical profiles

84%

Szyperek U.

Journal of Elementology

|

2007

|

tom 12

|

nr 4

363-373

The study to determine thermal-oxygen changes and chemical properties of water in a flow-through pond was conducted between April 2004 and March 2005 in three vertical profiles. The study involved the determination of electrolytic conductivity and pH reaction of water as well as the content of nitrate nitrogen and ammonium nitrogen, total phosphorus and sulphates. Thermal stratification was not observed in the investigated pond with the maximum depth of 2.45 m, and oxygen content was represented by a clinograde curve. Biogenic element concentrations in the pond were determined by depth in the vertical profile, and they were subject to seasonal variation. The highest concentrations of mineral substances in water were reported in the bottom layers of the pond. Although the investigated pond is a flow-through water body, it accumulates biogenic elements.

12

The effect of land use on physical and water properties of peat-moorsh soils

84%

Chrzanowski S., Kaca E.

Journal of Water and Land Development

|

2001

|

nr 05

The studies were carried out on a drained Łokieć Peatland. They concerned physical (bulk density, ash content, porosity) and water (potential and effective useful retention, static percolation, transitory reserves) properties of peat-moorsh soils. Permeability and moisture formation in the rhizosphere of soils under meadows and forests were the other concerns of this study. Drained peat-moorsh soils were found to be best protected from degradation when utilized as meadows; forestry unfavorably affected these soils. In the latter case, changes of the peat mass structure were more profound than under meadows. An upper soil layer was loosen as demonstrated by enhanced soil porosity and a smaller bulk density. Permeability of the rhizosphere under the birch wood was much greater than under meadows. The most advanced drying and depletion of ground water reserves (water easily available to plants) was found in the peat-moorsh soil under birch wood; it was much smaller under meadow vegetation.

13

Geomorphological conditions of water-air properties in the silt soils from the edge zone of the Carpathian Foothills

84%

Klimek M., Zaleski T., Niemyska-Lukaszuk J.

Acta Agrophysica

|

2000

|

tom 35

In this paper an attempt to estimate the influence of the relief on the selected physical soil properties from the edge zone of the Carpathian Foothills has been presented.Differentiation of water-air properties related to the location on the slope was evaluated.It results from, both, the main soil forming process-lessivage, erosion and accumulative changes in the morphology of the soil profile.Soils lessives situated on tops and slopes less prone to erosion are characterised by deeper eluvial horizons - luvic with a higher total porosity and water retention in comparison to illuvial horizons - argillic. Eroded lessivé soils occur on the slopes prone to erosion with the argillic horizon outeropped to the surface which determins their properties in the whole soil profile, first of all, their porosity is low and they have a limited capacity for water retention. Gley soils occur in the valley bottoms and synclines of slopes. They arc characterised by higher total porosity and retention in the whole profile in comparison to the lessivé soils.

14

Chemical properties and similarity of habitats of Utricularia species in Lower Silesia, Poland

84%

Kosiba P.

Acta Societatis Botanicorum Poloniae

|

2004

|

tom 73

|

nr 4

The study object consisted of 28 microhabitats of five Utricularia species localized in the Province of Lower Silesia, Poland. The aim of the study was to analyse the chemical properties of water and to present the differentiation of microhabitats in respect of their chemism, i.e., whether there are differences between the microhabitats, and which of the Utricularia species show the highest tolerance to the chemical properties of water. Analysed were the contents of NO-2, NO-3, NH+4, PO-24, K+, Ca+2, Mg+2, Na+, Fe+3, SO-24, total hardness of water, organic substance, pH and trophicity of water. The differentiation of microhabitats of Utricularia intermedia and U. minor appeared to be small, but much higher in case of U. vulgaris, U. australis and U. ochroleuca. The similarity of microhabitats has been determined by cluster analysis. The tree plot showed the least similarity of U. minor and U. intermedia, which occupy an extreme position in relation to microhabitats of the remaining species. Such a grouping suggests that this species is clearly distinct because of its connection with water properties.

15

Biodiversity in three lobelian lakes in relation to the catchment area influence

84%

Kraska M., Piotrowicz R., Klimaszyk P., Kuczynska-Kippen N., Szelag-Wasielewska E.

Acta Agrophysica

|

2006

|

tom 07

|

nr 2[133]

16

Synecological studies on littoral vegetation in Northern Poland

84%

Klosowski S.

Acta Hydrobiologica

|

1999

|

tom 41

|

nr Suppl.6

17

Spring fen Scheuchzerio-Caricetea nigrae in the Polish Western Carpathians - vegetation diversity in relation to soil and feeding waters

67%

Koczur A., Nicia P.

Acta Societatis Botanicorum Poloniae

|

2013

|

tom 82

|

nr 2

18

Zależność właściwości hydraulicznych gleby bielicowej od zawartości węgla organicznego

67%

Bryk M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2009

|

tom 542

|

nr 2

Scharakteryzowano przewodnictwo wodne wszystkich poziomów genetycznych leśnej gleby bielicowej właściwej wytworzonej z piasku. Odpowiednie próbki glebowe pobrano ze środka każdego poziomu genetycznego. Określono całkowitą zawartość węgla organicznego, wyznaczono krzywą desorpcji wody i przewodnictwo wodne gleby w strefie nasyconej. Na podstawie teorii van Genuchtena-Mualema modelowano krzywą retencji wodnej i przewodnictwo wodne gleby w pełnym zakresie wilgotności i potencjału wody glebowej. Stwierdzono, że estymowana przez model van Genuchtena krzywa retencji wodnej bardzo dobrze opisywała przebieg rzeczywistej zależności potencjału wody glebowej i zawartości wody. Umożliwiło to prawidłową ocenę przewodnictwa wodnego omawianej gleby na bazie modelu Mualema. Przewodnictwo wodne w strefie nasycenia poziomu organicznego było znacznie wyższe niż dla poziomów mineralnych. Jednocześnie poziom organiczny charakteryzował się najniższymi wartościami przewodnictwa wodnego w strefie nienasycenia. Przewodnictwo wodne, zarówno w strefie nasyconej, jak i nienasyconej, mineralnych poziomów genetycznych wzrastało wraz ze spadkiem całkowitej zawartości węgla organicznego.

19

Porownanie charakterystyk porow glebowych uzyskanych na podstawie pomiarow izoterm desorpcji pary wodnej oraz porozymetrii rteciowej

67%

Jozefaciuk G.

Acta Agrophysica

|

2001

|

tom 53

93-100

20

Investigations on intensification of carp fingerling production. 5. Physical and chemical properties of water

67%

Kolasa-Jamińska B.

Acta Hydrobiologica

|

1987

|

tom 29

|

nr 3

Ograniczanie wyników

Physical water and retaining properties of hydrogenic soil of the Vistula delta

Trapetum natantis Muller et Gors 1960 in hydromeliorative facilities in Serbia

Physicochemical properties of water retained in midfield bog pools

Spatial distribution of topsoil water content along a loess hillslope transect

Ecology of rare water plant communities in lakes of north-eastern Poland

Factors differentiating the habitats occupied by phytocoenoses of Phragmitetum communis [Gams 1927] Schmale 1939 in lakes of Wielkopolska Region

A study of the Baltic water optical transparency

Application of NIR spectroscopy for the analysis of water-carbohydrate interactions in water solutions

Improvement of water-air properties of eroded soils in a loess landscape after the application of agrohydrogel

Air, water and retaining properties of alluvial soils in a delta landscape

Changes in the chemical properties of water in a small pond in vertical profiles

The effect of land use on physical and water properties of peat-moorsh soils

Geomorphological conditions of water-air properties in the silt soils from the edge zone of the Carpathian Foothills

Chemical properties and similarity of habitats of Utricularia species in Lower Silesia, Poland

Biodiversity in three lobelian lakes in relation to the catchment area influence

Synecological studies on littoral vegetation in Northern Poland

Spring fen Scheuchzerio-Caricetea nigrae in the Polish Western Carpathians - vegetation diversity in relation to soil and feeding waters

Zależność właściwości hydraulicznych gleby bielicowej od zawartości węgla organicznego

Porownanie charakterystyk porow glebowych uzyskanych na podstawie pomiarow izoterm desorpcji pary wodnej oraz porozymetrii rteciowej

Investigations on intensification of carp fingerling production. 5. Physical and chemical properties of water