Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Polish Journal of Ecology

Powiadomienia systemowe

Sesja wygasła!
Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: beech ecosystems

Sortuj według:

Ogranicz wyniki do:

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

Kuklová M., Kukla J., Šimková I.

Polish Journal of Ecology

2014

Vol. 62, nr 3

467--478

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 filixmas 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).

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

Kuklová M., Kukla J., Schieber B.

Polish Journal of Ecology

2005

Vol. 53, nr 3

427-434

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 Polana 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 m2) and energy storage (1669.4> 1326.5> 1052.8> 119.1 kJm2) of Carex pilosa populations decreased in the following order according the sites: Vtáčnik Mts> Kremnické Vrchy Mts> Vel'ka Fatra Mts> Pol'ana Mts.Diffrent sequence was in case of the mean energy content: Vtáčnik Mts> Pol'ana 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 Pol'ana Mts and Veľká Fatra Mts plots. Differences in the mean shoot weight were insignificant.