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1

Wkład Bogumiła Pawłowskiego (1898-1971) w rozwój fitosocjologii

100%
Dzwonko Z.
Fragmenta Floristica et Geobotanica Polonica
|
2012
|
tom 19
|
nr 1
2

Znaczenie małych wysp siedliskowych dla ochrony bogactwa gatunkowego we współczesnym krajobrazie

100%
Dzwonko Z.
Roczniki Bieszczadzkie
|
2019
|
tom 27
3

Znaczenie starych lasów dla ochrony różnorodności biotycznej – potrzeba ich badań i inwentaryzacji

100%
Dzwonko Z.
Roczniki Bieszczadzkie
|
2017
|
tom 25
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Rośliny runa wskaźnikami pochodzenia i przemian lasów

100%
Dzwonko Z.
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
|
2015
|
tom 17
|
nr 1[42]
5

Migration of vascular plant species to a recent wood adjoining ancient woodland

100%
Dzwonko Z.
Acta Societatis Botanicorum Poloniae
|
2001
|
tom 70
|
nr 1
6

Impact of weather on vegetation dynamics in a limestone grassland

63%
Dzwonko Z., Loster S.
Acta Societatis Botanicorum Poloniae
|
2010
|
tom 79
|
nr Suppl.1
7

Wplyw dominujacych gatunkow drzew i antropogenicznych zaburzen na wtorna sukcesje i zroznicowanie roslinnosci w podmiejskim krajobrazie Krakowa

63%
Dzwonko Z., Loster S.
Ochrona Przyrody
|
1996
|
tom 53
3-17
8

Changes in species composition of an abandoned limestone grassland in relation to climatic conditions

63%
Dzwonko Z., Loster S.
Polish Journal of Ecology
|
2011
|
tom 59
|
nr 4
After abandonment many species-rich limestone grasslands have been overgrown by tall grasses and forbs, and often by shrubs and trees. As a result, communities with many regionally rare and endangered species are vanishing. We examined to what extend changes in the cover of sociological species groups and plant functional types in an unmanaged grassland depend on fluctuations in climatic conditions. Vegetation data from permanent plots in an abandoned grassland in southern Poland collected over 12 years were used. Relations between weather variables, time, and the cover of species groups were analysed using multiple linear regression and canonical correspondence analysis (CCA). The climatic data included mean temperatures and precipitation sums for each month from January to December (for the current year from January to July), and for 2, 3 and 4 consecutive months, with time lags of 0, 1, 2 and 3 years. It was found that both inter-annual fluctuation of climatic conditions and successional processes considerably influenced species composition of the study grassland. The fluctuations in precipitation and temperature explained from 0.8% to 27.1% of the variation in the cover of various sociological groups. The greatest effect on the cover dynamics of all species and majority of sociological groups had precipitation in spring and early summer in the current year. Most of species groups were affected also by temperature in spring and/or summer in the previous years, but its effect as lower than precipitation. The obtained results suggest that climatic conditions have also a significant impact on the rate of changes in abandoned limestone grasslands. Higher precipitation in spring and summer favour growth and spread of tall meadow grasses and forbs, accelerating changes from less compact communities dominated by smaller xerothermic species to more compact vegetation with a closed structure. In consequence the role of xerothermic calcareous species decreases and many of them may locally extinct within decades.
9

Zroznicowanie roslinnosci i wtorna sukcesja w murawowo-lesnym rezerwacie Skolczanka kolo Krakowa

63%
Dzwonko Z., Loster S.
Ochrona Przyrody
|
1992
|
tom 50
|
nr 1
33-64
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Impact of weather on dynamics of plant functional groups in an abandoned limestone grassland

63%
Dzwonko Z., Loster S.
Acta Societatis Botanicorum Poloniae
|
2011
|
tom 80
|
nr 4
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.
11

Ochrona polnaturalnych muraw nawapiennych we wspolczesnym krajobrazie: dynamika roslinnosci po wycieciu drzew

63%
Dzwonko Z., Loster S.
Ochrona Przyrody
|
1998
|
tom 55
3-23
12

Testing of Ellenberg and Zarzycki indicator values as predictors of soil and light conditions in woodlands

63%
Dzwonko Z., Loster S.
Fragmenta Floristica et Geobotanica
|
2000
|
tom 45
|
nr 1-2
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Changes in plant species composition in abandoned and restored limestone grasslands - the effects of tree and shrub cutting

63%
Dzwonko Z., Loster S.
Acta Societatis Botanicorum Poloniae
|
2008
|
tom 77
|
nr 1
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.
14

Jan Kornas [26 IV 1923 - 8 VIII 1994]

63%
Dzwonko Z.
Wiadomości Ekologiczne
|
1995
|
tom 41
|
nr 1
33-35
15
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

W poszukiwaniu wzorców naturalnych zbiorowisk leśnych - Dyskusja plenarna konferencji Naukowej "Lasy wobec zmieniającej się presji człowieka"

27%
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.
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
|
2015
|
tom 17
|
nr 1[42]
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