Autor: Dzwonko, Z. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Rośliny runa wskaźnikami pochodzenia i przemian lasów
Herb layer plants as indicators of woodlands origin and changes
Autorzy:: Dzwonko, Z.
Tematy:: lasy
runo lesne
bogactwo gatunkowe
rosliny wskaznikowe
ochrona przyrody
lasy puszczanskie
przemiany; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Powiązania:: https://bibliotekanauki.pl/articles/880865.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Changes in plant species composition in abandoned and restored limestone grasslands - the effects of tree and shrub cutting
Autorzy:: Dzwonko, Z
Loster, S.
Tematy:: cutting
Polska
grassland
secondary succession
restoration
species diversity
species composition
tree
composition change
plant species
shrub
time series
botany
permanent plot; Pokaż więcej
Wydawca:: Polskie Towarzystwo Botaniczne
Powiązania:: https://bibliotekanauki.pl/articles/57086.pdf Link otwiera się w nowym oknie
Opis:: Abandoned semi-natural limestone grasslands are often overgrown by shrubs and trees. Little is know if and to what extant xerothermic limestone grasslands can be restored by tree cutting. This was tested in a 12-year experiment after the clearing of a 35-year-old secondary pine wood developed on unmanaged grassland in the close proximity of not overgrown old grassland. After 12 years, there were no significant differences in the number of field layer species on the plots in the old and restored grasslands. But over this period the number of meadow species increased in all sites, while the number of xerothermic calcareous species increased significantly only in the old grassland plots. The developing shrub layer negatively influenced the number of nitrophilous and ruderal species in grasslands restored in the former close and open woods, and the number of all species, including the number of non-tufted perennials and perennials with vegetative spread, in the former open wood. The number of meadow species increased in years with higher precipitation in late spring and early summer. The obtained results suggest that in overgrowing grasslands shrubs and trees should be cut every few years, before their covers increase to about 30%. However, this treatment alone will not stop the changes to communities with dominance of tall and vegetatively spreading grasses and forbs. Cutting trees and shrubs in sites where most grassland species have already vanished, without additional managements supporting their dispersal, seedling recruitment and development, is not sufficient to restore limestone grasslands rich in xerothermic species.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Impact of weather on dynamics of plant functional groups in an abandoned limestone grassland
Autorzy:: Dzwonko, Z.
Loster, S.
Tematy:: weather impact
climate condition
plant-weather relation
dynamics
plant functional group
abandoned grassland
limestone grassland
permanent plot
secondary succession
Polska; Pokaż więcej
Wydawca:: Polskie Towarzystwo Botaniczne
Powiązania:: https://bibliotekanauki.pl/articles/58030.pdf Link otwiera się w nowym oknie
Opis:: We examined to what extend the rate and direction of changes in unmanaged grassland depend on fluctuations in climatic conditions. Vegetation data from permanent plots in a semi-natural grassland in southern Poland collected over 12 years were used. Relations between weather variables, time, and the cover of 41 more frequent species and 14 plant functional groups were analysed. The greatest effect on the dynamics of species and functional groups had precipitation in spring and/or early summer, particularly in the current year. The majority of plant groups were significantly affected also by the temperature in spring and early summer in one of the three previous years. During 12 years, the cover of annuals and biennials, short plants, and plants with small leaves decreased, while the cover of taller plants, plants with larger leaves, and with vegetative spread increased. The analyses suggest that these successional changes were not directly associated with climatic conditions but were affected by them indirectly through interspecific competition. The fluctuations in climatic conditions, chiefly precipitation, had a significant effect on both the composition and the rate of changes in abandoned grassland. The increase in the cover of tall perennial species with broad leaves hindered succession towards woodland despite of the presence of woods in the closed vicinity. It can be expected that during drier periods colonisation of grassland by later successional species could be easier.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: W poszukiwaniu wzorców naturalnych zbiorowisk leśnych - Dyskusja plenarna konferencji Naukowej "Lasy wobec zmieniającej się presji człowieka"
Searching for models of natural forest communities - Plenary discussion of scientific conference "Forests facing changing anthropopresure"
Autorzy:: Ciurzycki, W.
Danielewicz, W.
Dzwonko, Z.
Holeksa, J.
Liziniewicz, J.
Marciszewska, K.
Matuszkiewicz, J.M.
Medrzycki, P.
Obidzinski, A.
Pawlikowski, P.
Piroznikow, E.
Senetra, A.
Zaluski, T.
Tematy:: lesnictwo
lasy
antropopresja
konferencje
Rogow konferencja
dyskusja plenarna; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Powiązania:: https://bibliotekanauki.pl/articles/881877.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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