Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Growth of Vaccinium myrtillus L. [Ericaceae] in spruce forests damaged by air pollution

100%
Kukla J., Kuklova M.
Polish Journal of Ecology
|
2008
|
tom 56
|
nr 1
The growth parameters of the Vaccinium myrtillus shoots were studied on a vertical transect crossing localities “Muraň“ (1080–1110 m a.s.l., skeli-humic podzols, Fageta abietino-piceosa) and “Hliniky“ (950–960 m a.s.l, dystric cambisols, Abieti-Fageta inferiora) in the protected zone of the National park “Slovensky raj“ (Spiš region, East Slovakia). In the localities, both contaminated by air pollution research plots in undamaged and damaged (with lower stand density and canopy compactness) spruce ecosystems were established. The content of Al and Cr was significantly higher in cambisols, and that of Cd – in podzols. The limit values calculated for both soils have been exceeded only in case of mercury. The Al content in bilberry twigs exceeded the background values (by 44–76%) in case of the both plots situated on locality “Muraň”, and that of Ni and Pb concentrations (by 3–60%) only on damaged plot. The mean content of Ni and Pb was significantly higher in bilberry twigs growing on podzols and the mean content of Al was significantly higher in plants on undamaged plots. The mean length, weight as well as energy content of bilberry twigs were significantly higher in damaged spruce plots (on average by 33%), probably due to favourable light conditions.
2

Chromium and nickel accumulation by plants along an altitudinal gradient in western Carpathian secondary spruce stands

81%
Kuklova M., Kukla J., Gasova K.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 4
Our research was realized in segments of 80-year-old secondary spruce ecosystems selected in the buffer zone of Slovenský raj NP (western Carpathians). The vertical transect (635-1,110 m a.s.l.) consisted of three localities with six geobiocoenological plots. The Cr contents (mg kg-1) found in surface humus (0.38±0.04-2.18±0.22) and Ao horizons (0.20±0.03-3.16±0.32) of Skeli-Humic Podzols and Dystric Cambisols were nearly the same, in contrast to Ni (5.27±0.47-22.41±2.02 and 0.81±0.07-3.75±0.34 mg kg⁻¹, respectively). Ni contents in Ool and Oof horizons of surface humus with altitude as a rule decreased, while in Ooh horizon increased. For Cr a similar dependence was not observed. The Cr contents in plants (Dryopteris dilatata, Luzula luzuloides, Prenanthes purpurea, Rubus idaeus, Senecio ovatus, Solidago virgaurea, Vaccinium myrtillus) were usually lower than 0.4-0.5 mg kg⁻¹, with the exception of V. myrtillus (> 1.1 mg kg⁻¹) at 1,110 m a.s.l. On the other hand, Ni content was mostly higher as background value (1.5 mg kg-1), and in the case of S. virgaurea up above 10 mg kg⁻¹ at 650 m a.s.l. The highest mean Ni content was found in S. ovatus, and it significantly (p < 0.05) differed from those found in V. myrtillus and L. luzuloides (fertile) shoots. Stronger positive linear correlations were between Cr content in soils and shoots of D. dilatata and L. luzuloides (sterile). For Ni, it was R. idaeus. Ni transfer coefficients (TC) found for five plants (L. luzuloides – sterile, R. idaeus, D. dilatata, S. ovatus, S. virgaurea) rooted in surface horizons of Cambisols were higher than 1, thus pointing at the impact of soil contamination. Cr TC higher than 1 were found for D. dilatata (2.4) and V. myrtillus (1.1.-3.6) rooted in the surface horizons of Podzols, indicating the better bio-accumulation ability of these plants.
3

The changes of energy and carbon in top soil and above-ground part of Dryopteris filix-mas species along the succession of beech forest

81%
Kuklova M., Kukla J., Simkova I.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 3
The objective of research was to verify, whether succesion of nudal beech forests affects energy, ash and Ct contents of top layers of cambisols and aboveground part of dominant herb species Dryopteris filix-mas. The forest stands, from the juvenile stemwood to the stand of primeval forest character, were located in Slovenské stredohorie Mts (Western Carpathians). It has been found out that the successional stages of beech stands significantly affected soil characteristics of the ecotope, in the case of Dryopteris filix-mas species significant difference was observed only for the energy content. Approximately 7.5% less energy was accumulated in humus subhorizons Oof of mature beech stands (110, 200 years) compared with the juvenile stemwoods. On the other hand, in Aoq horizons markedly more energy (by 35–66%) was accumulated in the soils of mature beech phytocoenoses. The influence of stand succession differentiated ash content in Aoq horizons too. Significant difference (7.6%) was found between 85 and 200-year-old beech stand. Within studied parameters only accumulation of Ct in top soil layers was not significantly affected by stand succession. The relation between energy and ash accumulation in top soil layers of studied beech stands showed significant correlations between the variables (P <0.01). Approximately 62% of energy variability in humus subhorizons Ool of the studied stands was affected by the ash content (lower was the ash content – higher was the energy content). In Aoq soil horizons this dependence was 50% (higher was the ash content – lower was the energy content).
4

The soil-to-herbs transfer of heavy metals in spruce ecosystems

81%
Kuklova M., Kukla J., Hnilicka F.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 6
5

Individual and population parameters of Carex pilosa Scop. [Cyperaceae] in four forest sites in Western Carpathians [Slovakia]

81%
Kuklova M., Kukla J., Schieber B.
Polish Journal of Ecology
|
2005
|
tom 53
|
nr 3
The sedge Carex pilosa Scop. was studied in beech forest sites situated on 470 m a.s.l. (Kremnické Vrchy Mts), 1290 m a.s.l. (Poľana Mts), 1275 m a.s.l. (Vtáčnik Mts) and 1170 m a.s.l. (Veľká Fatra Mts) in the Western Carpathians (Central Slovakia). The degree of leaf necrotisation was considerably lower in site Kremnické Vrchy Mts. The shortest mean length of shoots was observed in the Poľana Mts (27.3 cm) and the Kremnické Vrchy Mts (36.6 cm), i.e. in forest sites with lack of light in herb layer, the longest in the Veľká Fatra Mts (43.1 cm) and the Vtáčnik Mts (48.8 cm) with looser canopy of forest stands. The mean density of shoots (222> 211> 181> 26 per 1m²), aboveground weight of a one shoot (0.386> 0.345> 0.303> 0.166 g), phytomass (85.7> 72.8> 54.8> 6.2 g m⁻²) and energy storage (1669.4> 1326.5> 1052.8> 119.1 kJm⁻²) of Carex pilosa populations decreased in the following order according the sites: Vtáčnik Mts> Kremnické Vrchy Mts> Veľká Fatra Mts> Poľana Mts. Different sequence was in case of the mean energy content: Vtáčnik Mts> Poľana Mts> Veľká Fatra Mts> Kremnické Vrchy Mts. Significant differences in mean shoot length were found between Carex pilosa population growing in lowest site (Kremnické Vrchy Mts) and populations growing in highest sites (Vtáčnik Mts, Veľká Fatra Mts) with different climatic conditions. The energy content was distinctively higher in the case of the highest situated plots (19.21–19.48 kJ g⁻¹) in comparison with the lowest situated site at the Kremnické Vrchy Mts (18.22 kJ g⁻¹). The insignificant differences were found only between the Poľana Mts and Veľká Fatra Mts plots. Differences in the mean shoot weight were insignificant.
6

Bioparameters of selected herb species in High Tatra Mts. spruce ecosystems

81%
Kukla J., Kovacova M., Schieber B.
Polish Journal of Ecology
|
2003
|
tom 51
|
nr 3
Bioparameters of selected herb species were studied on five control (undamaged) and five bark beetles damaged parallel plots established in form of two vertical transects in the spruce ecosystems of Bielovodská valley (High Tatra Mts.). The most abundant life forms in the studied phytocoenoses were hemicryptophytes (65%), the least abundant geophytes (5%). According to significance of differences in the average length of shoots the sensitivity of herb species to different ecological conditions and calamitous changes of the spruce stands density is as follows: Homogyne alpina > Luzula sylvatica = Dryopteris dilatata > Oxalis acetosella. According to significance of differences in energy content the sensitivity of species was following: Luzula sylvatica > Oxalis acetosella > Dryopteris dilatata > Homogyne alpina > Vaccinium myrtillus. However, the mean values calculated for undamaged and for damaged plots were significantly different (P <0.05) only in the case of weight of Luzula sylvatica shoots.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.